Difference between revisions of "RFC1156"

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(Created page with " Network Working Group K. McCloghrieRequest For Comments: 1156 Hughes LAN SystemsObsoletes: [[RFC1066|RFC 1...")
 
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−
Network Working Group                                    K. McCloghrieRequest For Comments:  1156                          Hughes LAN SystemsObsoletes:  [[RFC1066|RFC 1066]]                                           M. Rose                                   Performance Systems International                                                           May 1990
+
Network Working Group                                    K. McCloghrie
 +
Request For Comments:  1156                          Hughes LAN Systems
 +
Obsoletes:  RFC 1066                                            M. Rose
 +
                                      Performance Systems International
 +
                                                              May 1990
  
−
        Management Information Base for Network Management                    of TCP/IP-based internets
 
−
                        Table of Contents
 
−
1. Status of this Memo ...................................  12. IAB Policy Statement ..................................  23. Introduction ..........................................  24. Objects ...............................................  64.1 Object Groups ........................................  64.2 Format of Definitions ................................  75. Object Definitions ....................................  85.1 The System Group .....................................  95.2 The Interfaces Group .................................  115.2.1 The Interfaces Table ...............................  115.3 The Address Translation Group ........................  235.4 The IP Group .........................................  265.4.1 The IP Address Table ...............................  345.4.2 The IP Routing Table ...............................  365.5 The ICMP Group .......................................  435.6 The TCP Group ........................................  535.7 The UDP Group ........................................  625.8 The EGP Group ........................................  645.8.1 The EGP Neighbor Table .............................  656. Definitions ...........................................  687. Acknowledgements ......................................  898. References ............................................  909. Security Considerations................................  9110. Authors' Addresses....................................  91
 
−
== Status of this Memo ==
 
  
−
This RFC is a re-release of [[RFC1066|RFC 1066]], with a changed "Status of this
+
          Management Information Base for Network Management
−
Memo", "IAB Policy Statement", and "Introduction" sections plus a few
+
                      of TCP/IP-based internets
−
minor typographical corrections.  The technical content of the
 
−
document is unchanged from [[RFC1066|RFC 1066]].
 
  
−
This memo provides the initial version of the Management Information
+
                          Table of Contents
−
Base (MIB) for use with network management protocols in TCP/IP-based
 
−
internets in the short-term.  In particular, together with its
 
−
companion memos which describe the structure of management
 
  
 +
  1. Status of this Memo ...................................  1
 +
  2. IAB Policy Statement ..................................  2
 +
  3. Introduction ..........................................  2
 +
  4. Objects ...............................................  6
 +
  4.1 Object Groups ........................................  6
 +
  4.2 Format of Definitions ................................  7
 +
  5. Object Definitions ....................................  8
 +
  5.1 The System Group .....................................  9
 +
  5.2 The Interfaces Group .................................  11
 +
  5.2.1 The Interfaces Table ...............................  11
 +
  5.3 The Address Translation Group ........................  23
 +
  5.4 The IP Group .........................................  26
 +
  5.4.1 The IP Address Table ...............................  34
 +
  5.4.2 The IP Routing Table ...............................  36
 +
  5.5 The ICMP Group .......................................  43
 +
  5.6 The TCP Group ........................................  53
 +
  5.7 The UDP Group ........................................  62
 +
  5.8 The EGP Group ........................................  64
 +
  5.8.1 The EGP Neighbor Table .............................  65
 +
  6. Definitions ...........................................  68
 +
  7. Acknowledgements ......................................  89
 +
  8. References ............................................  90
 +
  9. Security Considerations................................  91
 +
  10. Authors' Addresses....................................  91
  
 +
1.  Status of this Memo
  
 +
  This RFC is a re-release of RFC 1066, with a changed "Status of this
 +
  Memo", "IAB Policy Statement", and "Introduction" sections plus a few
 +
  minor typographical corrections.  The technical content of the
 +
  document is unchanged from RFC 1066.
  
 +
  This memo provides the initial version of the Management Information
 +
  Base (MIB) for use with network management protocols in TCP/IP-based
 +
  internets in the short-term.  In particular, together with its
 +
  companion memos which describe the structure of management
  
−
information along with the initial network management protocol, these
 
−
documents provide a simple, workable architecture and system for
 
−
managing TCP/IP-based internets and in particular the Internet.
 
  
−
This memo specifies a Standard Protocol for the Internet community.
 
−
TCP/IP implementations in the Internet which are network manageable
 
−
are expected to adopt and implement this specification.
 
  
−
The Internet Activities Board recommends that all IP and TCP
+
McCloghrie & Rose                                             
−
implementations be network manageable.  This implies implementation
 
−
of the Internet MIB (RFC-1156) and at least one of the two
 
−
recommended management protocols SNMP (RFC-1157) or CMOT (RFC-1095).
 
−
It should be noted that, at this time, SNMP is a full Internet
 
−
standard and CMOT is a draft standard.  See also the Host and Gateway
 
−
Requirements RFCs for more specific information on the applicability
 
−
of this standard.
 
  
−
Please refer to the latest edition of the "IAB Official Protocol
+
RFC 1156                          MIB                          May 1990
−
Standards" RFC for current information on the state and status of
 
−
standard Internet protocols.
 
  
−
Distribution of this memo is unlimited.
 
  
−
== IAB Policy Statement ==
+
  information along with the initial network management protocol, these
 +
  documents provide a simple, workable architecture and system for
 +
  managing TCP/IP-based internets and in particular the Internet.
  
−
This MIB specification is the first edition of an evolving document
+
  This memo specifies a Standard Protocol for the Internet community.
−
defining variables needed for monitoring and control of various
+
  TCP/IP implementations in the Internet which are network manageable
−
components of the Internet.  Not all groups of defined variables are
+
  are expected to adopt and implement this specification.
−
mandatory for all Internet components.
 
  
−
For example, the EGP group is mandatory for gateways using EGP but
+
  The Internet Activities Board recommends that all IP and TCP
−
not for hosts which should not be running EGP.  Similarly, the TCP
+
  implementations be network manageable.  This implies implementation
−
group is mandatory for hosts running TCP but not for gateways which
+
  of the Internet MIB (RFC-1156) and at least one of the two
−
aren't running it.  What IS mandatory, however, is that all variables
+
  recommended management protocols SNMP (RFC-1157) or CMOT (RFC-1095).
−
of a group be supported if any element of the group is supported.
+
  It should be noted that, at this time, SNMP is a full Internet
 +
  standard and CMOT is a draft standard.  See also the Host and Gateway
 +
  Requirements RFCs for more specific information on the applicability
 +
  of this standard.
  
−
It is expected that additional MIB groups and variables will be
+
  Please refer to the latest edition of the "IAB Official Protocol
−
defined over time to accommodate the monitoring and control needs of
+
  Standards" RFC for current information on the state and status of
−
new or changing components of the Internet.  The responsible working
+
  standard Internet protocols.
−
group(s) will continue to refine this specification.
 
  
−
== Introduction ==
+
  Distribution of this memo is unlimited.
  
−
As reported in [[RFC1052|RFC 1052]], IAB Recommendations for the Development of
+
2.  IAB Policy Statement
−
Internet Network Management Standards [1], the Internet Activities
 
−
Board has directed the Internet Engineering Task Force (IETF) to
 
−
create two new working groups in the area of network management.  One
 
−
group was charged with the further specification and definition of
 
  
 +
  This MIB specification is the first edition of an evolving document
 +
  defining variables needed for monitoring and control of various
 +
  components of the Internet.  Not all groups of defined variables are
 +
  mandatory for all Internet components.
  
 +
  For example, the EGP group is mandatory for gateways using EGP but
 +
  not for hosts which should not be running EGP.  Similarly, the TCP
 +
  group is mandatory for hosts running TCP but not for gateways which
 +
  aren't running it.  What IS mandatory, however, is that all variables
 +
  of a group be supported if any element of the group is supported.
  
 +
  It is expected that additional MIB groups and variables will be
 +
  defined over time to accommodate the monitoring and control needs of
 +
  new or changing components of the Internet.  The responsible working
 +
  group(s) will continue to refine this specification.
  
 +
3.  Introduction
  
−
elements to be included in the Management Information Base.  The
+
  As reported in RFC 1052, IAB Recommendations for the Development of
−
other was charged with defining the modifications to the Simple
+
  Internet Network Management Standards [1], the Internet Activities
−
Network Management Protocol (SNMP) to accommodate the short-term
+
  Board has directed the Internet Engineering Task Force (IETF) to
−
needs of the network vendor and operator communities.  In the long-
+
  create two new working groups in the area of network management.  One
−
term, the use of the OSI network management framework was to be
+
  group was charged with the further specification and definition of
−
examined using the ISO CMIS/CMIP [2,3] framework as a basis.  Two
 
−
documents were produced to define the management information:  RFC
 
−
1065, which defined the Structure of Management Information (SMI)
 
−
[4], and [[RFC1066|RFC 1066]], which defined the Management Information Base
 
−
(MIB) [5].  Both of these documents were designed so as to be
 
−
compatible with both the SNMP and the OSI network management
 
−
framework.
 
  
−
This strategy was quite successful in the short-term: Internet-based
 
−
network management technology was fielded, by both the research and
 
−
commercial communities, within a few months.  As a result of this,
 
−
portions of the Internet community became network manageable in a
 
−
timely fashion.
 
  
−
As reported in [[RFC1109|RFC 1109]], Report of the Second Ad Hoc Network
 
−
Management Review Group [6], the requirements of the SNMP and the OSI
 
−
network management frameworks were more different than anticipated.
 
−
As such, the requirement for compatibility between the SMI/MIB and
 
−
both frameworks was suspended.
 
  
−
The IAB has designated the SNMP, SMI, and the initial Internet MIB to
+
McCloghrie & Rose                                             
−
be full "Standard Protocols" with "Recommended" status.  By this
 
−
action, the IAB recommends that all IP and TCP implementations be
 
−
network manageable and that the implementations that are network
 
−
manageable are expected to adopt and implement the SMI, MIB, and
 
−
SNMP.
 
  
−
As such, the current network management framework for TCP/IP- based
+
RFC 1156                          MIB                           May 1990
−
internets consists of:  Structure and Identification of Management
 
−
Information for TCP/IP-based Internets, which describes how managed
 
−
objects contained in the MIB are defined as set forth in [[RFC1155|RFC 1155]]
 
−
[7]; Management Information Base for Network Management of TCP/IP-
 
−
based Internets, which describes the managed objects contained in the
 
−
MIB as set forth in this memo; and, the Simple Network Management
 
−
Protocol, which defines the protocol used to manage these objects, as
 
−
set forth in [[RFC1157|RFC 1157]] [8].
 
  
−
The IAB also urged the working groups to be "extremely sensitive to
 
−
the need to keep SNMP simple," and recommends that the MIB working
 
−
group take as its starting inputs the MIB definitions found in the
 
−
High-Level Entity Management Systems (HEMS) [[RFC1024|RFC 1024]] [9], the initial
 
−
SNMP specification [10], and the CMIS/CMIP memos [11,12].
 
  
 +
  elements to be included in the Management Information Base.  The
 +
  other was charged with defining the modifications to the Simple
 +
  Network Management Protocol (SNMP) to accommodate the short-term
 +
  needs of the network vendor and operator communities.  In the long-
 +
  term, the use of the OSI network management framework was to be
 +
  examined using the ISO CMIS/CMIP [2,3] framework as a basis.  Two
 +
  documents were produced to define the management information:  RFC
 +
  1065, which defined the Structure of Management Information (SMI)
 +
  [4], and RFC 1066, which defined the Management Information Base
 +
  (MIB) [5].  Both of these documents were designed so as to be
 +
  compatible with both the SNMP and the OSI network management
 +
  framework.
  
 +
  This strategy was quite successful in the short-term: Internet-based
 +
  network management technology was fielded, by both the research and
 +
  commercial communities, within a few months.  As a result of this,
 +
  portions of the Internet community became network manageable in a
 +
  timely fashion.
  
 +
  As reported in RFC 1109, Report of the Second Ad Hoc Network
 +
  Management Review Group [6], the requirements of the SNMP and the OSI
 +
  network management frameworks were more different than anticipated.
 +
  As such, the requirement for compatibility between the SMI/MIB and
 +
  both frameworks was suspended.
  
 +
  The IAB has designated the SNMP, SMI, and the initial Internet MIB to
 +
  be full "Standard Protocols" with "Recommended" status.  By this
 +
  action, the IAB recommends that all IP and TCP implementations be
 +
  network manageable and that the implementations that are network
 +
  manageable are expected to adopt and implement the SMI, MIB, and
 +
  SNMP.
  
 +
  As such, the current network management framework for TCP/IP- based
 +
  internets consists of:  Structure and Identification of Management
 +
  Information for TCP/IP-based Internets, which describes how managed
 +
  objects contained in the MIB are defined as set forth in RFC 1155
 +
  [7]; Management Information Base for Network Management of TCP/IP-
 +
  based Internets, which describes the managed objects contained in the
 +
  MIB as set forth in this memo; and, the Simple Network Management
 +
  Protocol, which defines the protocol used to manage these objects, as
 +
  set forth in RFC 1157 [8].
  
−
Thus, the list of managed objects defined here, has been derived by
+
  The IAB also urged the working groups to be "extremely sensitive to
−
taking only those elements which are considered essential.  Since
+
  the need to keep SNMP simple," and recommends that the MIB working
−
such elements are essential, there is no need to allow the
+
  group take as its starting inputs the MIB definitions found in the
−
implementation of individual objects, to be optional.  Rather, all
+
  High-Level Entity Management Systems (HEMS) RFC 1024 [9], the initial
−
compliant implementations will contain all applicable (see below)
+
  SNMP specification [10], and the CMIS/CMIP memos [11,12].
−
objects defined in this memo.
 
  
−
This approach of taking only the essential objects is NOT
 
−
restrictive, since the SMI defined in the companion memo provides
 
−
three extensibility mechanisms:  one, the addition of new standard
 
−
objects through the definitions of new versions of the MIB; two, the
 
−
addition of widely-available but non-standard objects through the
 
−
multilateral subtree; and three, the addition of private objects
 
−
through the enterprises subtree. Such additional objects can not only
 
−
be used for vendor-specific elements, but also for experimentation as
 
−
required to further the knowledge of which other objects are
 
−
essential.
 
  
−
The primary criterion for being considered essential was for an
 
−
object to be contained in all of the above referenced MIB
 
−
definitions.  A few other objects have been included, but only if the
 
−
MIB working group believed they are truly essential.  The detailed
 
−
list of criteria against which potential inclusions in this (initial)
 
−
MIB were considered, was:
 
  
−
  1) An object needed to be essential for either fault or
 
−
      configuration management.
 
  
−
  2) Only weak control objects were permitted (by weak, it
+
McCloghrie & Rose                                             
−
      is meant that tampering with them can do only limited
 
−
      damage).  This criterion reflects the fact that the
 
−
      current management protocols are not sufficiently secure
 
−
      to do more powerful control operations.
 
  
−
  3) Evidence of current use and utility was required.
+
RFC 1156                          MIB                          May 1990
  
−
  4) An attempt was made to limit the number of objects to
 
−
      about 100 to make it easier for vendors to fully
 
−
      instrument their software.
 
  
−
   5) To avoid redundant variables, it was required that no
+
   Thus, the list of managed objects defined here, has been derived by
−
      object be included that can be derived from others in the
+
  taking only those elements which are considered essential.  Since
−
      MIB.
+
  such elements are essential, there is no need to allow the
 +
  implementation of individual objects, to be optional.  Rather, all
 +
  compliant implementations will contain all applicable (see below)
 +
  objects defined in this memo.
  
−
   6) Implementation specific objects (e.g., for BSD UNIX)
+
   This approach of taking only the essential objects is NOT
−
      were excluded.
+
  restrictive, since the SMI defined in the companion memo provides
 +
  three extensibility mechanisms:  one, the addition of new standard
 +
  objects through the definitions of new versions of the MIB; two, the
 +
  addition of widely-available but non-standard objects through the
 +
  multilateral subtree; and three, the addition of private objects
 +
  through the enterprises subtree. Such additional objects can not only
 +
  be used for vendor-specific elements, but also for experimentation as
 +
  required to further the knowledge of which other objects are
 +
  essential.
  
−
   7) It was agreed to avoid heavily instrumenting critical
+
   The primary criterion for being considered essential was for an
 +
  object to be contained in all of the above referenced MIB
 +
  definitions.  A few other objects have been included, but only if the
 +
  MIB working group believed they are truly essential.  The detailed
 +
  list of criteria against which potential inclusions in this (initial)
 +
  MIB were considered, was:
  
 +
      1) An object needed to be essential for either fault or
 +
        configuration management.
  
 +
      2) Only weak control objects were permitted (by weak, it
 +
        is meant that tampering with them can do only limited
 +
        damage).  This criterion reflects the fact that the
 +
        current management protocols are not sufficiently secure
 +
        to do more powerful control operations.
  
 +
      3) Evidence of current use and utility was required.
  
 +
      4) An attempt was made to limit the number of objects to
 +
        about 100 to make it easier for vendors to fully
 +
        instrument their software.
  
−
       sections of code.  The general guideline was one counter
+
       5) To avoid redundant variables, it was required that no
−
      per critical section per layer.
+
        object be included that can be derived from others in the
 +
        MIB.
  
 +
      6) Implementation specific objects (e.g., for BSD UNIX)
 +
        were excluded.
  
 +
      7) It was agreed to avoid heavily instrumenting critical
  
  
  
 +
McCloghrie & Rose                                             
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
        sections of code.  The general guideline was one counter
 +
        per critical section per layer.
  
  
Line 238: Line 274:
  
  
−
== Objects ==
 
  
−
Managed objects are accessed via a virtual information store, termed
 
−
the Management Information Base or MIB.  Objects in the MIB are
 
−
defined using Abstract Syntax Notation One (ASN.1) [13].
 
  
−
The mechanisms used for describing these objects are specified in the
 
−
companion memo.  In particular, each object has a name, a syntax, and
 
−
an encoding.  The name is an object identifier, an administratively
 
−
assigned name, which specifies an object type.  The object type
 
−
together with an object instance serves to uniquely identify a
 
−
specific instantiation of the object.  For human convenience, we
 
−
often use a textual string, termed the OBJECT DESCRIPTOR, to also
 
−
refer to the object type.
 
  
−
The syntax of an object type defines the abstract data structure
 
−
corresponding to that object type.  The ASN.1 language is used for
 
−
this purpose.  However, the companion memo purposely restricts the
 
−
ASN.1 constructs which may be used.  These restrictions are
 
−
explicitly made for simplicity.
 
  
−
The encoding of an object type is simply how that object type is
 
−
represented using the object type's syntax.  Implicitly tied to the
 
−
notion of an object type's syntax and encoding is how the object type
 
−
is represented when being transmitted on the network.  This memo
 
−
specifies the use of the basic encoding rules of ASN.1 [14].
 
  
−
=== Object Groups ===
 
  
−
Since this list of managed objects contains only the essential
+
McCloghrie & Rose                                             
−
elements, there is no need to allow individual objects to be
 
−
optional.  Rather, the objects are arranged into the following
 
−
groups:
 
  
−
              - System
+
RFC 1156                          MIB                          May 1990
−
              - Interfaces
 
−
              - Address Translation
 
−
              - IP
 
−
              - ICMP
 
−
              - TCP
 
−
              - UDP
 
−
              - EGP
 
  
−
There are two reasons for defining these groups:  one, to provide a
 
−
means of assigning object identifiers; two, to provide a method for
 
−
implementations of managed agents to know which objects they must
 
−
implement.  This method is as follows: if the semantics of a group is
 
−
applicable to an implementation, then it must implement all objects
 
  
 +
4.  Objects
  
 +
  Managed objects are accessed via a virtual information store, termed
 +
  the Management Information Base or MIB.  Objects in the MIB are
 +
  defined using Abstract Syntax Notation One (ASN.1) [13].
  
 +
  The mechanisms used for describing these objects are specified in the
 +
  companion memo.  In particular, each object has a name, a syntax, and
 +
  an encoding.  The name is an object identifier, an administratively
 +
  assigned name, which specifies an object type.  The object type
 +
  together with an object instance serves to uniquely identify a
 +
  specific instantiation of the object.  For human convenience, we
 +
  often use a textual string, termed the OBJECT DESCRIPTOR, to also
 +
  refer to the object type.
  
 +
  The syntax of an object type defines the abstract data structure
 +
  corresponding to that object type.  The ASN.1 language is used for
 +
  this purpose.  However, the companion memo purposely restricts the
 +
  ASN.1 constructs which may be used.  These restrictions are
 +
  explicitly made for simplicity.
  
−
in that group.  For example, an implementation must implement the EGP
+
  The encoding of an object type is simply how that object type is
−
group if and only if it implements the EGP protocol.
+
  represented using the object type's syntax.  Implicitly tied to the
 +
  notion of an object type's syntax and encoding is how the object type
 +
  is represented when being transmitted on the network.  This memo
 +
  specifies the use of the basic encoding rules of ASN.1 [14].
  
−
=== Format of Definitions ===
+
4.1.  Object Groups
  
−
The next section contains the specification of all object types
+
  Since this list of managed objects contains only the essential
−
contained in the MIB. Following the conventions of the companion
+
  elements, there is no need to allow individual objects to be
−
memo, the object types are defined using the following fields:
+
  optional. Rather, the objects are arranged into the following
 +
  groups:
  
−
      OBJECT:
+
                  - System
−
      -------
+
                  - Interfaces
−
            A textual name, termed the OBJECT DESCRIPTOR, for the
+
                  - Address Translation
−
            object type, along with its corresponding OBJECT
+
                  - IP
−
            IDENTIFIER.
+
                  - ICMP
 +
                  - TCP
 +
                  - UDP
 +
                  - EGP
  
−
      Syntax:
+
  There are two reasons for defining these groups: one, to provide a
−
            The abstract syntax for the object type, presented using
+
  means of assigning object identifiers; two, to provide a method for
−
            ASN.1.  This must resolve to an instance of the ASN.1
+
  implementations of managed agents to know which objects they must
−
            type ObjectSyntax defined in the SMI.
+
  implement.  This method is as follows: if the semantics of a group is
 +
  applicable to an implementation, then it must implement all objects
  
−
      Definition:
 
−
            A textual description of the semantics of the object
 
−
            type.  Implementations should ensure that their
 
−
            interpretation of the object type fulfills this
 
−
            definition since this MIB is intended for use in multi-
 
−
            vendor environments.  As such it is vital that object
 
−
            types have consistent meaning across all machines.
 
  
−
      Access:
 
−
            One of read-only, read-write, write-only, or
 
−
            not-accessible.
 
  
−
      Status:
+
McCloghrie & Rose                                             
−
          One of mandatory, optional, or obsolete.
 
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
  in that group.  For example, an implementation must implement the EGP
 +
  group if and only if it implements the EGP protocol.
  
 +
4.2.  Format of Definitions
  
 +
  The next section contains the specification of all object types
 +
  contained in the MIB. Following the conventions of the companion
 +
  memo, the object types are defined using the following fields:
  
 +
          OBJECT:
 +
          -------
 +
              A textual name, termed the OBJECT DESCRIPTOR, for the
 +
              object type, along with its corresponding OBJECT
 +
              IDENTIFIER.
  
 +
          Syntax:
 +
              The abstract syntax for the object type, presented using
 +
              ASN.1.  This must resolve to an instance of the ASN.1
 +
              type ObjectSyntax defined in the SMI.
  
 +
          Definition:
 +
              A textual description of the semantics of the object
 +
              type.  Implementations should ensure that their
 +
              interpretation of the object type fulfills this
 +
              definition since this MIB is intended for use in multi-
 +
              vendor environments.  As such it is vital that object
 +
              types have consistent meaning across all machines.
  
 +
          Access:
 +
              One of read-only, read-write, write-only, or
 +
              not-accessible.
  
 +
          Status:
 +
              One of mandatory, optional, or obsolete.
  
  
Line 344: Line 384:
  
  
−
== Object Definitions ==
 
  
−
            RFC1156-MIB
 
  
−
            DEFINITIONS ::= BEGIN
 
  
−
            IMPORTS
 
−
                    mgmt, OBJECT-TYPE, NetworkAddress, IpAddress,
 
−
                    Counter, Gauge, TimeTicks
 
−
                        FROM RFC1155-SMI;
 
  
−
            mib        OBJECT IDENTIFIER ::= { mgmt 1 }
 
  
−
            system    OBJECT IDENTIFIER ::= { mib 1 }
 
−
            interfaces OBJECT IDENTIFIER ::= { mib 2 }
 
−
            at        OBJECT IDENTIFIER ::= { mib 3 }
 
−
            ip        OBJECT IDENTIFIER ::= { mib 4 }
 
−
            icmp      OBJECT IDENTIFIER ::= { mib 5 }
 
−
            tcp        OBJECT IDENTIFIER ::= { mib 6 }
 
−
            udp        OBJECT IDENTIFIER ::= { mib 7 }
 
−
            egp        OBJECT IDENTIFIER ::= { mib 8 }
 
  
−
            END
 
  
  
 +
McCloghrie & Rose                                             
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
5.  Object Definitions
  
 +
              RFC1156-MIB
  
 +
              DEFINITIONS ::= BEGIN
  
 +
              IMPORTS
 +
                      mgmt, OBJECT-TYPE, NetworkAddress, IpAddress,
 +
                      Counter, Gauge, TimeTicks
 +
                          FROM RFC1155-SMI;
  
 +
              mib        OBJECT IDENTIFIER ::= { mgmt 1 }
  
 +
              system    OBJECT IDENTIFIER ::= { mib 1 }
 +
              interfaces OBJECT IDENTIFIER ::= { mib 2 }
 +
              at        OBJECT IDENTIFIER ::= { mib 3 }
 +
              ip        OBJECT IDENTIFIER ::= { mib 4 }
 +
              icmp      OBJECT IDENTIFIER ::= { mib 5 }
 +
              tcp        OBJECT IDENTIFIER ::= { mib 6 }
 +
              udp        OBJECT IDENTIFIER ::= { mib 7 }
 +
              egp        OBJECT IDENTIFIER ::= { mib 8 }
  
 +
              END
  
  
Line 397: Line 439:
  
  
−
=== The System Group ===
 
  
−
      Implementation of the System group is mandatory for all
 
−
      systems.
 
  
−
      OBJECT:
 
−
      -------
 
−
            sysDescr { system 1 }
 
  
−
      Syntax:
 
−
            OCTET STRING
 
  
−
      Definition:
 
−
            A textual description of the entity.  This value should
 
−
            include the full name and version identification of the
 
−
            system's hardware type, software operating-system, and
 
−
            networking software.  It is mandatory that this only
 
−
            contain printable ASCII characters.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
 
−
            mandatory.
 
  
  
−
      OBJECT:
 
−
      -------
 
−
            sysObjectID { system 2 }
 
  
−
      Syntax:
+
McCloghrie & Rose                                             
−
            OBJECT IDENTIFIER
 
  
−
      Definition:
+
RFC 1156                          MIB                          May 1990
−
            The vendor's authoritative identification of the network
 
−
            management subsystem contained in the entity.  This value
 
−
            is allocated within the SMI enterprises subtree
 
−
            (1.3.6.1.4.1) and provides an easy and unambiguous means
 
−
            for determining "what kind of box" is being managed.  For
 
−
            example, if vendor "Flintstones, Inc." was assigned the
 
−
            subtree 1.3.6.1.4.1.42, it could assign the identifier
 
−
            1.3.6.1.4.1.42.1.1 to its "Fred Router".
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
+
5.1.  The System Group
−
            mandatory.
 
  
 +
          Implementation of the System group is mandatory for all
 +
          systems.
  
 +
          OBJECT:
 +
          -------
 +
              sysDescr { system 1 }
  
 +
          Syntax:
 +
              OCTET STRING
  
 +
          Definition:
 +
              A textual description of the entity.  This value should
 +
              include the full name and version identification of the
 +
              system's hardware type, software operating-system, and
 +
              networking software.  It is mandatory that this only
 +
              contain printable ASCII characters.
  
−
      OBJECT:
+
          Access:
−
      -------
+
              read-only.
−
            sysUpTime { system 3 }
 
  
−
      Syntax:
+
          Status:
−
            TimeTicks
+
              mandatory.
  
−
      Definition:
 
−
            The time (in hundredths of a second) since the network
 
−
            management portion of the system was last re-initialized.
 
  
−
      Access:
+
          OBJECT:
−
            read-only.
+
          -------
 +
              sysObjectID { system 2 }
  
−
      Status:
+
          Syntax:
−
            mandatory.
+
              OBJECT IDENTIFIER
  
 +
          Definition:
 +
              The vendor's authoritative identification of the network
 +
              management subsystem contained in the entity.  This value
 +
              is allocated within the SMI enterprises subtree
 +
              (1.3.6.1.4.1) and provides an easy and unambiguous means
 +
              for determining "what kind of box" is being managed.  For
 +
              example, if vendor "Flintstones, Inc." was assigned the
 +
              subtree 1.3.6.1.4.1.42, it could assign the identifier
 +
              1.3.6.1.4.1.42.1.1 to its "Fred Router".
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
  
 +
McCloghrie & Rose                                             
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
          OBJECT:
 +
          -------
 +
              sysUpTime { system 3 }
  
 +
          Syntax:
 +
              TimeTicks
  
 +
          Definition:
 +
              The time (in hundredths of a second) since the network
 +
              management portion of the system was last re-initialized.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
Line 503: Line 549:
  
  
−
=== The Interfaces Group ===
 
  
−
      Implementation of the Interfaces group is mandatory for all
 
−
      systems.
 
  
−
      OBJECT:
 
−
      -------
 
−
            ifNumber { interfaces 1 }
 
  
−
      Syntax:
 
−
            INTEGER
 
  
−
      Definition:
 
−
            The number of network interfaces (regardless of their
 
−
            current state) on which this system can send/receive IP
 
−
            datagrams.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
 
−
            mandatory.
 
  
−
==== The Interfaces Table ====
 
  
−
      OBJECT:
 
−
      -------
 
−
            ifTable { interfaces 2 }
 
  
−
      Syntax:
 
−
            SEQUENCE OF IfEntry
 
  
−
      Definition:
 
−
            A list of interface entries.  The number of entries is
 
−
            given by the value of ifNumber.
 
  
−
      Access:
+
McCloghrie & Rose                                           
−
            read-write.
 
  
−
      Status:
+
RFC 1156                          MIB                          May 1990
−
            mandatory.
 
  
−
      OBJECT:
 
−
      -------
 
−
            ifEntry { ifTable 1 }
 
  
−
      Syntax:
+
5.2.  The Interfaces Group
−
            IfEntry ::= SEQUENCE {
 
  
 +
          Implementation of the Interfaces group is mandatory for all
 +
          systems.
  
 +
          OBJECT:
 +
          -------
 +
              ifNumber { interfaces 1 }
  
 +
          Syntax:
 +
              INTEGER
  
 +
          Definition:
 +
              The number of network interfaces (regardless of their
 +
              current state) on which this system can send/receive IP
 +
              datagrams.
  
−
                ifIndex
+
          Access:
−
                    INTEGER,
+
              read-only.
−
                ifDescr
 
−
                    OCTET STRING,
 
−
                ifType
 
−
                    INTEGER,
 
−
                ifMtu
 
−
                    INTEGER,
 
−
                ifSpeed
 
−
                    Gauge,
 
−
                ifPhysAddress
 
−
                    OCTET STRING,
 
−
                ifAdminStatus
 
−
                    INTEGER,
 
−
                ifOperStatus
 
−
                    INTEGER,
 
−
                ifLastChange
 
−
                    TimeTicks,
 
−
                ifInOctets
 
−
                    Counter,
 
−
                ifInUcastPkts
 
−
                    Counter,
 
−
                ifInNUcastPkts
 
−
                    Counter,
 
−
                ifInDiscards
 
−
                    Counter,
 
−
                ifInErrors
 
−
                    Counter,
 
−
                ifInUnknownProtos
 
−
                    Counter,
 
−
                ifOutOctets
 
−
                    Counter,
 
−
                ifOutUcastPkts
 
−
                    Counter,
 
−
                ifOutNUcastPkts
 
−
                    Counter,
 
−
                ifOutDiscards
 
−
                    Counter,
 
−
                ifOutErrors
 
−
                    Counter,
 
−
                ifOutQLen
 
−
                    Gauge
 
−
            }
 
  
−
      Definition:
+
          Status:
−
            An interface entry containing objects at the subnetwork
+
              mandatory.
−
            layer and below for a particular interface.
 
  
 +
5.2.1.  The Interfaces Table
  
 +
          OBJECT:
 +
          -------
 +
              ifTable { interfaces 2 }
  
 +
          Syntax:
 +
              SEQUENCE OF IfEntry
  
 +
          Definition:
 +
              A list of interface entries.  The number of entries is
 +
              given by the value of ifNumber.
  
 +
          Access:
 +
              read-write.
  
−
      Access:
+
          Status:
−
            read-write.
+
              mandatory.
  
−
      Status:
+
          OBJECT:
−
            mandatory.
+
          -------
 +
              ifEntry { ifTable 1 }
  
 +
          Syntax:
 +
              IfEntry ::= SEQUENCE {
  
−
      We now consider the individual components of each interface
 
−
      entry:
 
  
  
−
      OBJECT:
+
McCloghrie & Rose                                           
−
      -------
 
−
            ifIndex { ifEntry 1 }
 
  
−
      Syntax:
+
RFC 1156                          MIB                          May 1990
−
            INTEGER
 
  
−
      Definition:
 
−
            A unique value for each interface.  Its value ranges
 
−
            between 1 and the value of ifNumber.  The value for each
 
−
            interface must remain constant at least from one re-
 
−
            initialization of the entity's network management system
 
−
            to the next re-initialization.
 
  
−
      Access:
+
                    ifIndex
−
            read-only.
+
                        INTEGER,
 +
                    ifDescr
 +
                        OCTET STRING,
 +
                    ifType
 +
                        INTEGER,
 +
                    ifMtu
 +
                        INTEGER,
 +
                    ifSpeed
 +
                        Gauge,
 +
                    ifPhysAddress
 +
                        OCTET STRING,
 +
                    ifAdminStatus
 +
                        INTEGER,
 +
                    ifOperStatus
 +
                        INTEGER,
 +
                    ifLastChange
 +
                        TimeTicks,
 +
                    ifInOctets
 +
                        Counter,
 +
                    ifInUcastPkts
 +
                        Counter,
 +
                    ifInNUcastPkts
 +
                        Counter,
 +
                    ifInDiscards
 +
                        Counter,
 +
                    ifInErrors
 +
                        Counter,
 +
                    ifInUnknownProtos
 +
                        Counter,
 +
                    ifOutOctets
 +
                        Counter,
 +
                    ifOutUcastPkts
 +
                        Counter,
 +
                    ifOutNUcastPkts
 +
                        Counter,
 +
                    ifOutDiscards
 +
                        Counter,
 +
                    ifOutErrors
 +
                        Counter,
 +
                    ifOutQLen
 +
                        Gauge
 +
              }
  
−
      Status:
+
          Definition:
−
            mandatory.
+
              An interface entry containing objects at the subnetwork
 +
              layer and below for a particular interface.
  
  
−
      OBJECT:
 
−
      -------
 
−
            ifDescr { ifEntry 2 }
 
  
−
      Syntax:
 
−
            OCTET STRING
 
  
−
      Definition:
+
McCloghrie & Rose                                           
−
            A text string containing information about the interface.
 
−
            This string should include the name of the manufacturer,
 
−
            the product name and the version of the hardware
 
−
            interface.  The string is intended for presentation to a
 
−
            human; it must not contain anything but printable ASCII
 
−
            characters.
 
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
          Access:
 +
              read-write.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          We now consider the individual components of each interface
 +
          entry:
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
+
          OBJECT:
−
            mandatory.
+
          -------
 +
              ifIndex { ifEntry 1 }
  
 +
          Syntax:
 +
              INTEGER
  
−
      OBJECT:
+
          Definition:
−
      -------
+
              A unique value for each interface.  Its value ranges
−
            ifType { ifEntry 3 }
+
              between 1 and the value of ifNumber.  The value for each
 +
              interface must remain constant at least from one re-
 +
              initialization of the entity's network management system
 +
              to the next re-initialization.
  
−
      Syntax:
+
          Access:
−
            INTEGER {
+
              read-only.
−
                other(1),          -- none of the following
 
−
                regular1822(2),
 
−
                hdh1822(3),
 
−
                ddn-x25(4),
 
−
                rfc877-x25(5),
 
−
                ethernet-csmacd(6),
 
−
                iso88023-csmacd(7),
 
−
                iso88024-tokenBus(8),
 
−
                iso88025-tokenRing(9),
 
−
                iso88026-man(10),
 
−
                starLan(11),
 
−
                proteon-10MBit(12),
 
−
                proteon-80MBit(13),
 
−
                hyperchannel(14),
 
−
                fddi(15),
 
−
                lapb(16),
 
−
                sdlc(17),
 
−
                t1-carrier(18),
 
−
                cept(19),          -- european equivalent of T-1
 
−
                basicIsdn(20),
 
−
                primaryIsdn(21),
 
−
                                    -- proprietary serial
 
−
                propPointToPointSerial(22)
 
−
            }
 
  
−
      Definition:
+
          Status:
−
            The type of interface, distinguished according to the
+
              mandatory.
−
            physical/link/network protocol(s) immediately "below" IP
 
−
            in the protocol stack.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
+
          OBJECT:
−
            mandatory.
+
          -------
 +
              ifDescr { ifEntry 2 }
  
 +
          Syntax:
 +
              OCTET STRING
  
 +
          Definition:
 +
              A text string containing information about the interface.
 +
              This string should include the name of the manufacturer,
 +
              the product name and the version of the hardware
 +
              interface.  The string is intended for presentation to a
 +
              human; it must not contain anything but printable ASCII
 +
              characters.
  
  
  
−
      OBJECT:
 
−
      -------
 
−
            ifMtu { ifEntry 4 }
 
  
−
      Syntax:
 
−
            INTEGER
 
  
−
      Definition:
+
McCloghrie & Rose                                           
−
            The size of the largest IP datagram which can be
 
−
            sent/received on the interface, specified in octets.
 
  
−
      Access:
+
RFC 1156                          MIB                          May 1990
−
            read-only.
 
  
−
      Status:
 
−
            mandatory.
 
  
 +
          Access:
 +
              read-only.
  
−
      OBJECT:
+
          Status:
−
      -------
+
              mandatory.
−
            ifSpeed { ifEntry 5 }
 
  
−
      Syntax:
 
−
            Gauge
 
  
−
      Definition:
+
          OBJECT:
−
            An estimate of the interface's current bandwidth in bits
+
          -------
−
            per second.  For interfaces which do not vary in
+
              ifType { ifEntry 3 }
−
            bandwidth or for those where no accurate estimation can
 
−
            be made, this object should contain the nominal
 
−
            bandwidth.
 
  
−
      Access:
+
          Syntax:
−
            read-only.
+
              INTEGER {
 +
                    other(1),          -- none of the following
 +
                    regular1822(2),
 +
                    hdh1822(3),
 +
                    ddn-x25(4),
 +
                    rfc877-x25(5),
 +
                    ethernet-csmacd(6),
 +
                    iso88023-csmacd(7),
 +
                    iso88024-tokenBus(8),
 +
                    iso88025-tokenRing(9),
 +
                    iso88026-man(10),
 +
                    starLan(11),
 +
                    proteon-10MBit(12),
 +
                    proteon-80MBit(13),
 +
                    hyperchannel(14),
 +
                    fddi(15),
 +
                    lapb(16),
 +
                    sdlc(17),
 +
                    t1-carrier(18),
 +
                    cept(19),          -- european equivalent of T-1
 +
                    basicIsdn(20),
 +
                    primaryIsdn(21),
 +
                                        -- proprietary serial
 +
                    propPointToPointSerial(22)
 +
              }
  
−
      Status:
+
          Definition:
−
            mandatory.
+
              The type of interface, distinguished according to the
 +
              physical/link/network protocol(s) immediately "below" IP
 +
              in the protocol stack.
  
 +
          Access:
 +
              read-only.
  
−
      OBJECT:
+
          Status:
−
      -------
+
              mandatory.
−
            ifPhysAddress { ifEntry 6 }
 
  
−
      Syntax:
 
−
            OCTET STRING
 
  
−
      Definition:
 
−
            The interface's address at the protocol layer immediately
 
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
          OBJECT:
 +
          -------
 +
              ifMtu { ifEntry 4 }
  
−
            "below" IP in the protocol stack.  For interfaces which
+
          Syntax:
−
            do not have such an address (e.g., a serial line), this
+
              INTEGER
−
            object should contain an octet string of zero length.
 
  
−
      Access:
+
          Definition:
−
            read-only.
+
              The size of the largest IP datagram which can be
 +
              sent/received on the interface, specified in octets.
  
−
      Status:
+
          Access:
−
            mandatory.
+
              read-only.
  
 +
          Status:
 +
              mandatory.
  
−
      OBJECT:
 
−
      -------
 
−
            ifAdminStatus { ifEntry 7 }
 
  
−
      Syntax:
+
          OBJECT:
−
            INTEGER {
+
          -------
−
                up(1),      -- ready to pass packets
+
               ifSpeed { ifEntry 5 }
−
                down(2),
 
−
                testing(3)  -- in some test mode
 
−
               }
 
  
−
        Definition:
+
          Syntax:
−
            The desired state of the interface.  The testing(3) state
+
              Gauge
−
            indicates that no operational packets can be passed.
 
  
−
        Access:
+
          Definition:
−
            read-write.
+
              An estimate of the interface's current bandwidth in bits
 +
              per second.  For interfaces which do not vary in
 +
              bandwidth or for those where no accurate estimation can
 +
              be made, this object should contain the nominal
 +
              bandwidth.
  
−
        Status:
+
          Access:
−
            mandatory.
+
              read-only.
  
 +
          Status:
 +
              mandatory.
  
−
      OBJECT:
 
−
      -------
 
−
            ifOperStatus { ifEntry 8 }
 
  
−
      Syntax:
+
          OBJECT:
−
            INTEGER {
+
          -------
−
                up(1),      -- ready to pass packets
+
              ifPhysAddress { ifEntry 6 }
−
                down(2),
 
−
                testing(3)  -- in some test mode
 
−
            }
 
  
−
      Definition:
+
          Syntax:
−
            The current operational state of the interface.  The
+
              OCTET STRING
−
            testing(3) state indicates that no operational packets
 
−
            can be passed.
 
  
 +
          Definition:
 +
              The interface's address at the protocol layer immediately
  
  
  
 +
McCloghrie & Rose                                           
  
−
      Access:
+
RFC 1156                          MIB                          May 1990
−
            read-only.
 
  
−
      Status:
 
−
            mandatory.
 
  
 +
              "below" IP in the protocol stack.  For interfaces which
 +
              do not have such an address (e.g., a serial line), this
 +
              object should contain an octet string of zero length.
  
−
      OBJECT:
+
          Access:
−
      -------
+
              read-only.
−
            ifLastChange { ifEntry 9 }
 
  
−
      Syntax:
+
          Status:
−
            TimeTicks
+
              mandatory.
  
−
      Definition:
 
−
            The value of sysUpTime at the time the interface entered
 
−
            its current operational state.  If the current state was
 
−
            entered prior to the last re-initialization of the local
 
−
            network management subsystem, then this object contains a
 
−
            zero value.
 
  
−
      Access:
+
          OBJECT:
−
            read-only.
+
          -------
 +
              ifAdminStatus { ifEntry 7 }
  
−
      Status:
+
          Syntax:
−
            mandatory.
+
              INTEGER {
 +
                    up(1),      -- ready to pass packets
 +
                    down(2),
 +
                    testing(3)  -- in some test mode
 +
                  }
  
 +
          Definition:
 +
              The desired state of the interface.  The testing(3) state
 +
              indicates that no operational packets can be passed.
  
−
      OBJECT:
+
          Access:
−
      -------
+
              read-write.
−
            ifInOctets { ifEntry 10 }
 
  
−
      Syntax:
+
          Status:
−
            Counter
+
              mandatory.
  
−
      Definition:
 
−
            The total number of octets received on the interface,
 
−
            including framing characters.
 
  
−
      Access:
+
          OBJECT:
−
            read-only.
+
          -------
 +
              ifOperStatus { ifEntry 8 }
  
−
      Status:
+
          Syntax:
−
            mandatory.
+
              INTEGER {
 +
                    up(1),      -- ready to pass packets
 +
                    down(2),
 +
                    testing(3)  -- in some test mode
 +
              }
  
 +
          Definition:
 +
              The current operational state of the interface.  The
 +
              testing(3) state indicates that no operational packets
 +
              can be passed.
  
  
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
−
      OBJECT:
 
−
      -------
 
−
            ifInUcastPkts  { ifEntry 11 }
 
  
−
      Syntax:
+
          OBJECT:
−
            Counter
+
          -------
 +
              ifLastChange { ifEntry 9 }
  
−
      Definition:
+
          Syntax:
−
            The number of (subnet) unicast packets delivered to a
+
              TimeTicks
−
            higher-layer protocol.
 
  
−
      Access:
+
          Definition:
−
            read-only.
+
              The value of sysUpTime at the time the interface entered
 +
              its current operational state.  If the current state was
 +
              entered prior to the last re-initialization of the local
 +
              network management subsystem, then this object contains a
 +
              zero value.
  
−
      Status:
+
          Access:
−
            mandatory.
+
              read-only.
  
 +
          Status:
 +
              mandatory.
  
−
      OBJECT:
 
−
      -------
 
−
            ifInNUcastPkts { ifEntry 12 }
 
  
−
      Syntax:
+
          OBJECT:
−
            Counter
+
          -------
 +
              ifInOctets { ifEntry 10 }
  
−
      Definition:
+
          Syntax:
−
            The number of non-unicast (i.e., subnet broadcast or
+
              Counter
−
            subnet multicast) packets delivered to a higher-layer
 
−
            protocol.
 
  
−
      Access:
+
          Definition:
−
            read-only.
+
              The total number of octets received on the interface,
 +
              including framing characters.
  
−
      Status:
+
          Access:
−
            mandatory.
+
              read-only.
  
 +
          Status:
 +
              mandatory.
  
−
      OBJECT:
 
−
      -------
 
−
            ifInDiscards { ifEntry 13 }
 
  
−
      Syntax:
 
−
            Counter
 
  
−
      Definition:
 
−
            The number of inbound packets which were chosen to be
 
−
            discarded even though no errors had been detected to
 
−
            prevent their being deliverable to a higher-layer
 
  
  
  
  
 +
McCloghrie & Rose                                           
  
−
            protocol.  One possible reason for discarding such a
+
RFC 1156                          MIB                          May 1990
−
            packet could be to free up buffer space.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
+
          OBJECT:
−
            mandatory.
+
          -------
 +
              ifInUcastPkts  { ifEntry 11 }
  
 +
          Syntax:
 +
              Counter
  
−
      OBJECT:
+
          Definition:
−
      -------
+
              The number of (subnet) unicast packets delivered to a
−
            ifInErrors { ifEntry 14 }
+
              higher-layer protocol.
  
−
      Syntax:
+
          Access:
−
            Counter
+
              read-only.
  
−
      Definition:
+
          Status:
−
            The number of inbound packets that contained errors
+
              mandatory.
−
            preventing them from being deliverable to a higher-layer
 
−
            protocol.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
+
          OBJECT:
−
            mandatory.
+
          -------
 +
              ifInNUcastPkts { ifEntry 12 }
  
 +
          Syntax:
 +
              Counter
  
−
      OBJECT:
+
          Definition:
−
      -------
+
              The number of non-unicast (i.e., subnet broadcast or
−
            ifInUnknownProtos { ifEntry 15 }
+
              subnet multicast) packets delivered to a higher-layer
 +
              protocol.
  
−
      Syntax:
+
          Access:
−
            Counter
+
              read-only.
  
−
      Definition:
+
          Status:
−
            The number of packets received via the interface which
+
              mandatory.
−
            were discarded because of an unknown or unsupported
 
−
            protocol.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
+
          OBJECT:
−
          mandatory.
+
          -------
 +
              ifInDiscards { ifEntry 13 }
  
 +
          Syntax:
 +
              Counter
  
 +
          Definition:
 +
              The number of inbound packets which were chosen to be
 +
              discarded even though no errors had been detected to
 +
              prevent their being deliverable to a higher-layer
  
  
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
−
      OBJECT:
 
−
      -------
 
−
            ifOutOctets { ifEntry 16 }
 
  
−
      Syntax:
+
              protocol.  One possible reason for discarding such a
−
            Counter
+
              packet could be to free up buffer space.
  
−
      Definition:
+
          Access:
−
            The total number of octets transmitted out of the
+
              read-only.
−
            interface, including framing characters.
 
  
−
      Access:
+
          Status:
−
            read-only.
+
              mandatory.
  
−
      Status:
 
−
            mandatory.
 
  
 +
          OBJECT:
 +
          -------
 +
              ifInErrors { ifEntry 14 }
  
−
      OBJECT:
+
          Syntax:
−
      -------
+
              Counter
−
            ifOutUcastPkts { ifEntry 17 }
 
  
−
        Syntax:
+
          Definition:
−
            Counter
+
              The number of inbound packets that contained errors
 +
              preventing them from being deliverable to a higher-layer
 +
              protocol.
  
−
      Definition:
+
          Access:
−
            The total number of packets that higher-level protocols
+
              read-only.
−
            requested be transmitted to a subnet-unicast address,
 
−
            including those that were discarded or not sent.
 
  
−
      Access:
+
          Status:
−
            read-only.
+
              mandatory.
  
−
      Status:
 
−
            mandatory.
 
  
 +
          OBJECT:
 +
          -------
 +
              ifInUnknownProtos { ifEntry 15 }
  
−
      OBJECT:
+
          Syntax:
−
      -------
+
              Counter
−
          ifOutNUcastPkts { ifEntry 18 }
 
  
−
      Syntax:
+
          Definition:
−
            Counter
+
              The number of packets received via the interface which
 +
              were discarded because of an unknown or unsupported
 +
              protocol.
  
−
      Definition:
+
          Access:
−
            The total number of packets that higher-level protocols
+
              read-only.
−
            requested be transmitted to a non-unicast (i.e., a subnet
 
−
            broadcast or subnet multicast) address, including those
 
  
 +
          Status:
 +
              mandatory.
  
  
  
  
−
            that were discarded or not sent.
 
  
−
      Access:
+
McCloghrie & Rose                                           
−
            read-only.
 
  
−
      Status:
+
RFC 1156                          MIB                          May 1990
−
            mandatory.
 
  
  
−
      OBJECT:
+
          OBJECT:
−
      -------
+
          -------
−
            ifOutDiscards { ifEntry 19 }
+
              ifOutOctets { ifEntry 16 }
  
−
      Syntax:
+
          Syntax:
−
            Counter
+
              Counter
  
−
      Definition:
+
          Definition:
−
            The number of outbound packets which were chosen to be
+
              The total number of octets transmitted out of the
−
            discarded even though no errors had been detected to
+
              interface, including framing characters.
−
            prevent their being transmitted.  One possible reason for
 
−
            discarding such a packet could be to free up buffer
 
−
            space.
 
  
−
      Access:
+
          Access:
−
            read-only.
+
              read-only.
  
−
      Status:
+
          Status:
−
            mandatory.
+
              mandatory.
  
  
−
      OBJECT:
+
          OBJECT:
−
      -------
+
          -------
−
            ifOutErrors { ifEntry 20 }
+
              ifOutUcastPkts { ifEntry 17 }
  
−
      Syntax:
+
          Syntax:
−
            Counter
+
              Counter
  
−
      Definition:
+
          Definition:
−
            The number of outbound packets that could not be
+
              The total number of packets that higher-level protocols
−
            transmitted because of errors.
+
              requested be transmitted to a subnet-unicast address,
 +
              including those that were discarded or not sent.
  
−
      Access:
+
          Access:
−
            read-only.
+
              read-only.
  
−
      Status:
+
          Status:
−
            mandatory.
+
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              ifOutNUcastPkts { ifEntry 18 }
  
 +
          Syntax:
 +
              Counter
  
 +
          Definition:
 +
              The total number of packets that higher-level protocols
 +
              requested be transmitted to a non-unicast (i.e., a subnet
 +
              broadcast or subnet multicast) address, including those
  
  
  
−
      OBJECT:
+
McCloghrie & Rose                                           
−
      -------
 
−
            ifOutQLen { ifEntry 21 }
 
  
−
      Syntax:
+
RFC 1156                          MIB                          May 1990
−
            Gauge
 
  
−
      Definition:
 
−
            The length of the output packet queue (in packets).
 
  
−
      Access:
+
              that were discarded or not sent.
−
            read-only.
 
  
−
      Status:
+
          Access:
−
            mandatory.
+
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              ifOutDiscards { ifEntry 19 }
  
 +
          Syntax:
 +
              Counter
  
 +
          Definition:
 +
              The number of outbound packets which were chosen to be
 +
              discarded even though no errors had been detected to
 +
              prevent their being transmitted.  One possible reason for
 +
              discarding such a packet could be to free up buffer
 +
              space.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              ifOutErrors { ifEntry 20 }
  
 +
          Syntax:
 +
              Counter
  
 +
          Definition:
 +
              The number of outbound packets that could not be
 +
              transmitted because of errors.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
Line 1,119: Line 1,176:
  
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
          OBJECT:
 +
          -------
 +
              ifOutQLen { ifEntry 21 }
  
 +
          Syntax:
 +
              Gauge
  
 +
          Definition:
 +
              The length of the output packet queue (in packets).
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
Line 1,139: Line 1,209:
  
  
−
=== The Address Translation Group ===
 
  
−
Implementation of the Address Translation group is mandatory
 
−
for all systems.
 
  
−
The Address Translation group contains one table which is the
 
−
union across all interfaces of the translation tables for
 
−
converting a NetworkAddress (e.g., an IP address) into a
 
−
subnetwork-specific address.  For lack of a better term, this
 
−
document refers to such a subnetwork-specific address as a
 
−
"physical" address.
 
  
−
Examples of such translation tables are:  for broadcast media
 
−
where ARP is in use, the translation table is equivalent to
 
−
the ARP cache; or, on an X.25 network where non-algorithmic
 
−
translation to X.121 addresses is required, the translation
 
−
table contains the NetworkAddress to X.121 address
 
−
equivalences.
 
  
−
      OBJECT:
 
−
      -------
 
−
            atTable { at 1 }
 
  
−
      Syntax:
 
−
            SEQUENCE OF AtEntry
 
  
−
      Definition:
 
−
            The Address Translation tables contain the NetworkAddress
 
−
            to "physical" address equivalences.  Some interfaces do
 
−
            not use translation tables for determining address
 
−
            equivalences (e.g., DDN-X.25 has an algorithmic method);
 
−
            if all interfaces are of this type, then the Address
 
−
            Translation table is empty, i.e., has zero entries.
 
  
−
      Access:
 
−
            read-write.
 
  
−
      Status:
 
−
            mandatory.
 
  
  
−
      OBJECT:
 
−
      -------
 
−
            atEntry { atTable 1 }
 
  
−
      Syntax:
 
−
            AtEntry ::= SEQUENCE {
 
−
                atIfIndex
 
  
  
Line 1,192: Line 1,225:
  
  
−
                    INTEGER,
 
−
                atPhysAddress
 
−
                    OCTET STRING,
 
−
                atNetAddress
 
−
                    NetworkAddress
 
−
            }
 
  
−
      Definition:
 
−
            Each entry contains one NetworkAddress to "physical"
 
−
            address equivalence.
 
  
−
      Access:
 
−
            read-write.
 
  
−
      Status:
 
−
            mandatory.
 
  
−
      We now consider the individual components of each Address
 
−
      Translation table entry:
 
  
  
−
      OBJECT:
 
−
      -------
 
−
            atIfIndex { atEntry 1 }
 
  
−
      Syntax:
+
McCloghrie & Rose                                           
−
            INTEGER
 
  
−
      Definition:
+
RFC 1156                          MIB                          May 1990
−
            The interface on which this entry's equivalence is
 
−
            effective.  The interface identified by a particular
 
−
            value of this index is the same interface as identified
 
−
            by the same value of ifIndex.
 
  
−
      Access:
 
−
            read-write.
 
  
−
      Status:
+
5.3.  The Address Translation Group
−
            mandatory.
 
  
 +
  Implementation of the Address Translation group is mandatory
 +
  for all systems.
  
−
      OBJECT:
+
  The Address Translation group contains one table which is the
−
      -------
+
  union across all interfaces of the translation tables for
−
            atPhysAddress { atEntry 2 }
+
  converting a NetworkAddress (e.g., an IP address) into a
 +
  subnetwork-specific address.  For lack of a better term, this
 +
  document refers to such a subnetwork-specific address as a
 +
  "physical" address.
  
−
      Syntax:
+
  Examples of such translation tables are: for broadcast media
−
            OCTET STRING
+
  where ARP is in use, the translation table is equivalent to
 +
  the ARP cache; or, on an X.25 network where non-algorithmic
 +
  translation to X.121 addresses is required, the translation
 +
  table contains the NetworkAddress to X.121 address
 +
  equivalences.
  
 +
          OBJECT:
 +
          -------
 +
              atTable { at 1 }
  
 +
          Syntax:
 +
              SEQUENCE OF AtEntry
  
 +
          Definition:
 +
              The Address Translation tables contain the NetworkAddress
 +
              to "physical" address equivalences.  Some interfaces do
 +
              not use translation tables for determining address
 +
              equivalences (e.g., DDN-X.25 has an algorithmic method);
 +
              if all interfaces are of this type, then the Address
 +
              Translation table is empty, i.e., has zero entries.
  
 +
          Access:
 +
              read-write.
  
 +
          Status:
 +
              mandatory.
  
−
      Definition:
 
−
            The media-dependent "physical" address.
 
  
−
      Access:
+
          OBJECT:
−
            read-write.
+
          -------
 +
              atEntry { atTable 1 }
  
−
      Status:
+
          Syntax:
−
            mandatory.
+
              AtEntry ::= SEQUENCE {
 +
                    atIfIndex
  
  
−
      OBJECT:
 
−
      -------
 
−
            atNetAddress { atEntry 3 }
 
  
−
      Syntax:
+
McCloghrie & Rose                                           
−
            NetworkAddress
 
  
−
      Definition:
+
RFC 1156                          MIB                          May 1990
−
            The NetworkAddress (e.g., the IP address) corresponding to
 
−
            the media-dependent "physical" address.
 
  
−
      Access:
 
−
            read-write.
 
  
−
      Status:
+
                        INTEGER,
−
            mandatory.
+
                    atPhysAddress
 +
                        OCTET STRING,
 +
                    atNetAddress
 +
                        NetworkAddress
 +
              }
  
 +
          Definition:
 +
              Each entry contains one NetworkAddress to "physical"
 +
              address equivalence.
  
 +
          Access:
 +
              read-write.
  
 +
          Status:
 +
              mandatory.
  
 +
          We now consider the individual components of each Address
 +
          Translation table entry:
  
  
 +
          OBJECT:
 +
          -------
 +
              atIfIndex { atEntry 1 }
  
 +
          Syntax:
 +
              INTEGER
  
 +
          Definition:
 +
              The interface on which this entry's equivalence is
 +
              effective.  The interface identified by a particular
 +
              value of this index is the same interface as identified
 +
                by the same value of ifIndex.
  
 +
          Access:
 +
              read-write.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              atPhysAddress { atEntry 2 }
  
 +
          Syntax:
 +
              OCTET STRING
  
  
  
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
          Definition:
 +
              The media-dependent "physical" address.
  
 +
          Access:
 +
              read-write.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              atNetAddress { atEntry 3 }
  
 +
          Syntax:
 +
              NetworkAddress
  
 +
          Definition:
 +
              The NetworkAddress (e.g., the IP address) corresponding to
 +
              the media-dependent "physical" address.
  
−
=== The IP Group ===
+
          Access:
 +
              read-write.
  
−
Implementation of the IP group is mandatory for all systems.
+
          Status:
 +
              mandatory.
  
  
−
      OBJECT:
 
−
      -------
 
−
            ipForwarding { ip 1 }
 
  
−
      Syntax:
 
−
            INTEGER {
 
−
                gateway(1),  -- entity forwards datagrams
 
−
                host(2)      -- entity does NOT forward datagrams
 
−
            }
 
  
−
      Definition:
 
−
            The indication of whether this entity is acting as an IP
 
−
            gateway in respect to the forwarding of datagrams
 
−
            received by, but not addressed to, this entity.  IP
 
−
            gateways forward datagrams; Hosts do not (except those
 
−
            Source-Routed via the host).
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
 
−
            mandatory.
 
  
  
−
      OBJECT:
 
−
      -------
 
−
            ipDefaultTTL { ip 2 }
 
  
−
      Syntax:
 
−
            INTEGER
 
  
−
      Definition:
 
−
            The default value inserted into the Time-To-Live field of
 
−
            the IP header of datagrams originated at this entity,
 
−
            whenever a TTL value is not supplied by the transport
 
−
            layer protocol.
 
  
−
      Access:
 
−
            read-write.
 
  
−
      Status:
 
−
            mandatory.
 
  
  
Line 1,351: Line 1,393:
  
  
−
      OBJECT:
 
−
      -------
 
−
            ipInReceives { ip 3 }
 
  
−
      Syntax:
 
−
            Counter
 
  
−
      Definition:
 
−
            The total number of input datagrams received from
 
−
            interfaces, including those received in error.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
 
−
            mandatory.
 
  
  
−
      OBJECT:
 
−
      -------
 
−
            ipInHdrErrors { ip 4 }
 
  
−
      Syntax:
+
McCloghrie & Rose                                           
−
            Counter
 
  
−
      Definition:
+
RFC 1156                          MIB                          May 1990
−
            The number of input datagrams discarded due to errors in
 
−
            their IP headers, including bad checksums, version number
 
−
            mismatch, other format errors, time-to-live exceeded,
 
−
            errors discovered in processing their IP options, etc.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
+
5.4.  The IP Group
−
            mandatory.
 
  
 +
  Implementation of the IP group is mandatory for all systems.
  
−
      OBJECT:
 
−
      -------
 
−
            ipInAddrErrors { ip 5 }
 
  
−
      Syntax:
+
          OBJECT:
−
            Counter
+
          -------
 +
              ipForwarding { ip 1 }
  
−
      Definition:
+
          Syntax:
−
            The number of input datagrams discarded because the IP
+
              INTEGER {
−
            address in their IP header's destination field was not a
+
                    gateway(1),  -- entity forwards datagrams
 +
                    host(2)      -- entity does NOT forward datagrams
 +
              }
  
 +
          Definition:
 +
              The indication of whether this entity is acting as an IP
 +
              gateway in respect to the forwarding of datagrams
 +
              received by, but not addressed to, this entity.  IP
 +
              gateways forward datagrams; Hosts do not (except those
 +
              Source-Routed via the host).
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
−
            valid address to be received at this entity.  This count
+
          OBJECT:
−
            includes invalid addresses (e.g., 0.0.0.0) and addresses
+
          -------
−
            of unsupported Classes (e.g., Class E).  For entities
+
              ipDefaultTTL { ip 2 }
−
            which are not IP Gateways and therefore do not forward
 
−
            datagrams, this counter includes datagrams discarded
 
−
            because the destination address was not a local address.
 
  
−
      Access:
+
          Syntax:
−
            read-only.
+
              INTEGER
  
−
      Status:
+
          Definition:
−
            mandatory.
+
              The default value inserted into the Time-To-Live field of
 +
              the IP header of datagrams originated at this entity,
 +
              whenever a TTL value is not supplied by the transport
 +
              layer protocol.
  
 +
          Access:
 +
              read-write.
  
−
      OBJECT:
+
          Status:
−
      -------
+
              mandatory.
−
            ipForwDatagrams { ip 6 }
 
  
−
      Syntax:
 
−
            Counter
 
  
−
      Definition:
 
−
            The number of input datagrams for which this entity was
 
−
            not their final IP destination, as a result of which an
 
−
            attempt was made to find a route to forward them to that
 
−
            final destination.  In entities which do not act as IP
 
−
            Gateways, this counter will include only those packets
 
−
            which were Source-Routed via this entity, and the
 
−
            Source-Route option processing was successful.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
+
McCloghrie & Rose                                           
−
            mandatory.
 
  
 +
RFC 1156                          MIB                          May 1990
  
−
      OBJECT:
 
−
      -------
 
−
            ipInUnknownProtos { ip 7 }
 
  
−
      Syntax:
+
          OBJECT:
−
            Counter
+
          -------
 +
              ipInReceives { ip 3 }
  
−
      Definition:
+
          Syntax:
−
            The number of locally-addressed datagrams received
+
              Counter
−
            successfully but discarded because of an unknown or
 
−
            unsupported protocol.
 
  
 +
          Definition:
 +
              The total number of input datagrams received from
 +
              interfaces, including those received in error.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
−
        Access:
+
          OBJECT:
−
            read-only.
+
          -------
 +
              ipInHdrErrors { ip 4 }
  
−
      Status:
+
          Syntax:
−
            mandatory.
+
              Counter
  
 +
          Definition:
 +
              The number of input datagrams discarded due to errors in
 +
              their IP headers, including bad checksums, version number
 +
              mismatch, other format errors, time-to-live exceeded,
 +
              errors discovered in processing their IP options, etc.
  
−
      OBJECT:
+
          Access:
−
      -------
+
              read-only.
−
            ipInDiscards { ip 8 }
 
  
−
      Syntax:
+
          Status:
−
            Counter
+
              mandatory.
  
−
      Definition:
 
−
            The number of input IP datagrams for which no problems
 
−
            were encountered to prevent their continued processing,
 
−
            but which were discarded (e.g. for lack of buffer space).
 
−
            Note that this counter does not include any datagrams
 
−
            discarded while awaiting re-assembly.
 
  
−
      Access:
+
          OBJECT:
−
            read-only.
+
          -------
 +
              ipInAddrErrors { ip 5 }
  
−
      Status:
+
          Syntax:
−
            mandatory.
+
              Counter
  
 +
          Definition:
 +
              The number of input datagrams discarded because the IP
 +
              address in their IP header's destination field was not a
  
−
      OBJECT:
 
−
      -------
 
−
            ipInDelivers { ip 9 }
 
  
−
      Syntax:
 
−
            Counter
 
  
−
      Definition:
+
McCloghrie & Rose                                           
−
            The total number of input datagrams successfully
 
−
            delivered to IP user-protocols (including ICMP).
 
  
−
      Access:
+
RFC 1156                          MIB                          May 1990
−
            read-only.
 
  
−
      Status:
 
−
            mandatory.
 
  
−
      OBJECT:
+
              valid address to be received at this entity.  This count
−
      -------
+
              includes invalid addresses (e.g., 0.0.0.0) and addresses
−
            ipOutRequests { ip 10 }
+
              of unsupported Classes (e.g., Class E).  For entities
 +
              which are not IP Gateways and therefore do not forward
 +
              datagrams, this counter includes datagrams discarded
 +
              because the destination address was not a local address.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              ipForwDatagrams { ip 6 }
  
−
      Syntax:
+
          Syntax:
−
            Counter
+
              Counter
  
−
      Definition:
+
          Definition:
−
            The total number of IP datagrams which local IP user-
+
              The number of input datagrams for which this entity was
−
            protocols (including ICMP) supplied to IP in requests for
+
              not their final IP destination, as a result of which an
−
            transmission.  Note that this counter does not include
+
              attempt was made to find a route to forward them to that
−
            any datagrams counted in ipForwDatagrams.
+
              final destination.  In entities which do not act as IP
 +
              Gateways, this counter will include only those packets
 +
              which were Source-Routed via this entity, and the
 +
              Source-Route option processing was successful.
  
−
      Access:
+
          Access:
−
            read-only.
+
              read-only.
  
−
      Status:
+
          Status:
−
            mandatory.
+
              mandatory.
  
  
−
      OBJECT:
+
          OBJECT:
−
      -------
+
          -------
−
            ipOutDiscards { ip 11 }
+
              ipInUnknownProtos { ip 7 }
  
−
      Syntax:
+
          Syntax:
−
            Counter
+
              Counter
  
−
      Definition:
+
          Definition:
−
            The number of output IP datagrams for which no problem
+
              The number of locally-addressed datagrams received
−
            was encountered to prevent their transmission to their
+
              successfully but discarded because of an unknown or
−
            destination, but which were discarded (e.g., for lack of
+
              unsupported protocol.
−
            buffer space).  Note that this counter would include
 
−
            datagrams counted in ipForwDatagrams if any such packets
 
−
            met this (discretionary) discard criterion.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
 
−
            mandatory.
 
  
 +
McCloghrie & Rose                                           
  
−
      OBJECT:
+
RFC 1156                          MIB                          May 1990
−
      -------
 
−
            ipOutNoRoutes { ip 12 }
 
  
−
      Syntax:
 
−
            Counter
 
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              ipInDiscards { ip 8 }
  
 +
          Syntax:
 +
              Counter
  
 +
          Definition:
 +
              The number of input IP datagrams for which no problems
 +
              were encountered to prevent their continued processing,
 +
              but which were discarded (e.g. for lack of buffer space).
 +
              Note that this counter does not include any datagrams
 +
              discarded while awaiting re-assembly.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
−
      Definition:
 
−
            The number of IP datagrams discarded because no route
 
−
            could be found to transmit them to their destination.
 
−
            Note that this counter includes any packets counted in
 
−
            ipForwDatagrams which meet this "no-route" criterion.
 
  
−
      Access:
+
          OBJECT:
−
            read-only.
+
          -------
 +
              ipInDelivers { ip 9 }
  
−
      Status:
+
          Syntax:
−
            mandatory.
+
              Counter
  
 +
          Definition:
 +
              The total number of input datagrams successfully
 +
              delivered to IP user-protocols (including ICMP).
  
−
      OBJECT:
+
          Access:
−
      -------
+
              read-only.
−
            ipReasmTimeout { ip 13 }
 
  
−
      Syntax:
+
          Status:
−
            INTEGER
+
              mandatory.
  
−
      Definition:
+
          OBJECT:
−
            The maximum number of seconds which received fragments
+
          -------
−
            are held while they are awaiting reassembly at this
+
              ipOutRequests { ip 10 }
−
            entity.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
 
−
            mandatory.
 
  
 +
McCloghrie & Rose                                           
  
−
      OBJECT:
+
RFC 1156                          MIB                          May 1990
−
      -------
 
−
            ipReasmReqds { ip 14 }
 
  
−
      Syntax:
 
−
            Counter
 
  
−
      Definition:
+
          Syntax:
−
            The number of IP fragments received which needed to be
+
              Counter
−
            reassembled at this entity.
 
  
−
      Access:
+
          Definition:
−
            read-only.
+
              The total number of IP datagrams which local IP user-
 +
              protocols (including ICMP) supplied to IP in requests for
 +
              transmission.  Note that this counter does not include
 +
              any datagrams counted in ipForwDatagrams.
  
−
      Status:
+
          Access:
−
            mandatory.
+
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              ipOutDiscards { ip 11 }
  
 +
          Syntax:
 +
              Counter
  
−
      OBJECT:
+
          Definition:
−
      -------
+
              The number of output IP datagrams for which no problem
−
            ipReasmOKs { ip 15 }
+
              was encountered to prevent their transmission to their
 +
              destination, but which were discarded (e.g., for lack of
 +
              buffer space).  Note that this counter would include
 +
              datagrams counted in ipForwDatagrams if any such packets
 +
              met this (discretionary) discard criterion.
  
−
      Syntax:
+
          Access:
−
            Counter
+
              read-only.
  
−
      Definition:
+
          Status:
−
            The number of IP datagrams successfully re-assembled.
+
              mandatory.
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
+
          OBJECT:
−
            mandatory.
+
          -------
 +
              ipOutNoRoutes { ip 12 }
  
 +
          Syntax:
 +
              Counter
  
−
      OBJECT:
 
−
      -------
 
−
            ipReasmFails { ip 16 }
 
  
−
      Syntax:
 
−
            Counter
 
  
−
      Definition:
 
−
            The number of failures detected by the IP re-assembly
 
−
            algorithm (for whatever reason:  timed out, errors, etc).
 
  
−
            Note that this is not necessarily a count of discarded IP
 
−
            fragments since some algorithms (notably [[RFC815|RFC 815]]'s) can
 
−
            lose track of the number of fragments by combining them
 
−
            as they are received.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
 
−
            mandatory.
 
  
 +
McCloghrie & Rose                                           
  
−
      OBJECT:
+
RFC 1156                          MIB                          May 1990
−
      -------
 
−
            ipFragOKs { ip 17 }
 
  
−
      Syntax:
 
−
          Counter
 
  
 +
          Definition:
 +
              The number of IP datagrams discarded because no route
 +
              could be found to transmit them to their destination.
 +
              Note that this counter includes any packets counted in
 +
              ipForwDatagrams which meet this "no-route" criterion.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              ipReasmTimeout { ip 13 }
  
 +
          Syntax:
 +
              INTEGER
  
−
      Definition:
+
          Definition:
−
            The number of IP datagrams that have been successfully
+
              The maximum number of seconds which received fragments
−
            fragmented at this entity.
+
              are held while they are awaiting reassembly at this
 +
              entity.
  
−
      Access:
+
          Access:
−
            read-only.
+
              read-only.
  
−
      Status:
+
          Status:
−
            mandatory.
+
              mandatory.
  
  
−
      OBJECT:
+
          OBJECT:
−
      -------
+
          -------
−
            ipFragFails { ip 18 }
+
              ipReasmReqds { ip 14 }
  
−
      Syntax:
+
          Syntax:
−
            Counter
+
              Counter
  
−
      Definition:
+
          Definition:
−
            The number of IP datagrams that have been discarded
+
              The number of IP fragments received which needed to be
−
            because they needed to be fragmented at this entity but
+
              reassembled at this entity.
−
            could not be, e.g., because their "Don't Fragment" flag
 
−
            was set.
 
  
−
      Access:
+
          Access:
−
            read-only.
+
              read-only.
  
−
      Status:
+
          Status:
−
            mandatory.
+
              mandatory.
  
  
−
      OBJECT:
 
−
      -------
 
−
            ipFragCreates { ip 19 }
 
  
−
      Syntax:
+
McCloghrie & Rose                                           
−
            Counter
 
  
−
      Definition:
+
RFC 1156                          MIB                          May 1990
−
            The number of IP datagram fragments that have been
 
−
            generated as a result of fragmentation at this entity.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
+
          OBJECT:
−
            mandatory.
+
          -------
 +
              ipReasmOKs { ip 15 }
  
 +
          Syntax:
 +
              Counter
  
 +
          Definition:
 +
              The number of IP datagrams successfully re-assembled.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
−
==== The IP Address Table ====
+
          OBJECT:
 +
          -------
 +
              ipReasmFails { ip 16 }
  
−
The Ip Address table contains this entity's IP addressing
+
          Syntax:
−
information.
+
              Counter
  
 +
          Definition:
 +
              The number of failures detected by the IP re-assembly
 +
              algorithm (for whatever reason:  timed out, errors, etc).
  
−
      OBJECT:
+
              Note that this is not necessarily a count of discarded IP
−
      -------
+
              fragments since some algorithms (notably RFC 815's) can
−
            ipAddrTable { ip 20 }
+
              lose track of the number of fragments by combining them
 +
              as they are received.
  
−
      Syntax:
+
          Access:
−
            SEQUENCE OF IpAddrEntry
+
              read-only.
  
−
      Definition:
+
          Status:
−
            The table of addressing information relevant to this
+
              mandatory.
−
            entity's IP addresses.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
+
          OBJECT:
−
            mandatory.
+
          -------
 +
              ipFragOKs { ip 17 }
  
 +
          Syntax:
 +
              Counter
  
−
      OBJECT:
 
−
      -------
 
−
            ipAddrEntry { ipAddrTable 1 }
 
  
−
      Syntax:
 
−
            IpAddrEntry ::= SEQUENCE {
 
−
                ipAdEntAddr
 
−
                    IpAddress,
 
−
                ipAdEntIfIndex
 
−
                    INTEGER,
 
−
                ipAdEntNetMask
 
−
                    IpAddress,
 
−
                ipAdEntBcastAddr
 
−
                    INTEGER
 
−
            }
 
  
−
      Definition:
 
−
            The addressing information for one of this entity's IP
 
−
            addresses.
 
  
−
      Access:
 
−
            read-only.
 
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
          Definition:
 +
              The number of IP datagrams that have been successfully
 +
              fragmented at this entity.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
−
      Status:
 
−
            mandatory.
 
  
 +
          OBJECT:
 +
          -------
 +
              ipFragFails { ip 18 }
  
−
      OBJECT:
+
          Syntax:
−
      -------
+
              Counter
−
            ipAdEntAddr  { ipAddrEntry 1 }
 
  
−
      Syntax:
+
          Definition:
−
            IpAddress
+
              The number of IP datagrams that have been discarded
 +
              because they needed to be fragmented at this entity but
 +
              could not be, e.g., because their "Don't Fragment" flag
 +
              was set.
  
−
      Definition:
+
          Access:
−
            The IP address to which this entry's addressing
+
              read-only.
−
            information pertains.
 
  
−
      Access:
+
          Status:
−
            read-only.
+
              mandatory.
  
−
      Status:
 
−
            mandatory.
 
  
 +
          OBJECT:
 +
          -------
 +
              ipFragCreates { ip 19 }
  
−
      OBJECT:
+
          Syntax:
−
      -------
+
              Counter
−
            ipAdEntIfIndex  { ipAddrEntry 2 }
 
  
−
      Syntax:
+
          Definition:
−
            INTEGER
+
              The number of IP datagram fragments that have been
 +
              generated as a result of fragmentation at this entity.
  
−
      Definition:
+
          Access:
−
            The index value which uniquely identifies the interface
+
              read-only.
−
            to which this entry is applicable.  The interface
 
−
            identified by a particular value of this index is the
 
−
            same interface as identified by the same value of
 
−
            ifIndex.
 
  
−
      Access:
+
          Status:
−
            read-only.
+
              mandatory.
  
−
      Status:
 
−
            mandatory.
 
  
  
−
      OBJECT:
 
−
      -------
 
−
            ipAdEntNetMask  { ipAddrEntry 3 }
 
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
5.4.1.  The IP Address Table
  
 +
  The Ip Address table contains this entity's IP addressing
 +
  information.
  
  
−
      Syntax:
+
          OBJECT:
−
            IpAddress
+
          -------
 +
              ipAddrTable { ip 20 }
  
−
      Definition:
+
          Syntax:
−
            The subnet mask associated with the IP address of this
+
              SEQUENCE OF IpAddrEntry
−
            entry.  The value of the mask is an IP address with all
 
−
            the network bits set to 1 and all the hosts bits set to
 
−
            0.
 
  
−
      Access:
+
          Definition:
−
            read-only.
+
              The table of addressing information relevant to this
 +
              entity's IP addresses.
  
−
      Status:
+
          Access:
−
            mandatory.
+
              read-only.
  
 +
          Status:
 +
              mandatory.
  
−
      OBJECT:
 
−
      -------
 
−
            ipAdEntBcastAddr { ipAddrEntry 4 }
 
  
−
      Syntax:
+
          OBJECT:
−
            INTEGER
+
          -------
 +
              ipAddrEntry { ipAddrTable 1 }
  
−
      Definition:
+
          Syntax:
−
            The value of the least-significant bit in the IP
+
              IpAddrEntry ::= SEQUENCE {
−
            broadcast address used for sending datagrams on the
+
                    ipAdEntAddr
−
            (logical) interface associated with the IP address of
+
                        IpAddress,
−
            this entry.  For example, when the Internet standard
+
                    ipAdEntIfIndex
−
            all-ones broadcast address is used, the value will be 1.
+
                        INTEGER,
 +
                    ipAdEntNetMask
 +
                        IpAddress,
 +
                    ipAdEntBcastAddr
 +
                        INTEGER
 +
              }
  
−
      Access:
+
          Definition:
−
            read-only.
+
              The addressing information for one of this entity's IP
 +
              addresses.
  
−
      Status:
+
          Access:
−
            mandatory.
+
              read-only.
  
−
==== The IP Routing Table ====
 
  
−
The IP Routing Table contains an entry for each route
 
−
presently known to this entity.  Note that the action to be
 
−
taken in response to a request to read a non-existent entry,
 
−
is specific to the network management protocol being used.
 
  
  
−
      OBJECT:
 
−
      -------
 
−
            ipRoutingTable { ip 21 }
 
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
          Status:
 +
              mandatory.
  
  
−
      Syntax:
+
          OBJECT:
−
            SEQUENCE OF IpRouteEntry
+
          -------
 +
              ipAdEntAddr  { ipAddrEntry 1 }
  
−
      Definition:
+
          Syntax:
−
            This entity's IP Routing table.
+
              IpAddress
  
−
      Access:
+
          Definition:
−
            read-write.
+
              The IP address to which this entry's addressing
 +
              information pertains.
  
−
      Status:
+
          Access:
−
            mandatory.
+
              read-only.
  
 +
          Status:
 +
              mandatory.
  
−
      OBJECT:
 
−
      -------
 
−
            ipRouteEntry { ipRoutingTable 1 }
 
  
−
      Syntax:
+
          OBJECT:
−
            IpRouteEntry ::= SEQUENCE {
+
          -------
−
                ipRouteDest
+
              ipAdEntIfIndex  { ipAddrEntry 2 }
−
                    IpAddress,
 
−
                ipRouteIfIndex
 
−
                    INTEGER,
 
−
                ipRouteMetric1
 
−
                    INTEGER,
 
−
                ipRouteMetric2
 
−
                    INTEGER,
 
−
                ipRouteMetric3
 
−
                    INTEGER,
 
−
                ipRouteMetric4
 
−
                    INTEGER,
 
−
                ipRouteNextHop
 
−
                    IpAddress,
 
−
                ipRouteType
 
−
                    INTEGER,
 
−
                ipRouteProto
 
−
                    INTEGER,
 
−
                ipRouteAge
 
−
                    INTEGER
 
−
            }
 
  
−
      Definition:
+
          Syntax:
−
            A route to a particular destination.
+
              INTEGER
  
−
      Access:
+
          Definition:
−
            read-write.
+
              The index value which uniquely identifies the interface
 +
              to which this entry is applicable.  The interface
 +
              identified by a particular value of this index is the
 +
                same interface as identified by the same value of
 +
                ifIndex.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              ipAdEntNetMask  { ipAddrEntry 3 }
  
  
  
−
      Status:
 
−
            mandatory.
 
  
−
      We now consider the individual components of each route in the
 
−
      IP Routing Table:
 
  
 +
McCloghrie & Rose                                           
  
−
      OBJECT:
+
RFC 1156                          MIB                          May 1990
−
      -------
 
−
            ipRouteDest { ipRouteEntry 1 }
 
  
−
      Syntax:
 
−
            IpAddress
 
  
−
      Definition:
+
          Syntax:
−
            The destination IP address of this route.  An entry with
+
              IpAddress
−
            a value of 0.0.0.0 is considered a default route.
 
−
            Multiple such default routes can appear in the table, but
 
−
            access to such multiple entries is dependent on the
 
−
            table-access mechanisms defined by the network management
 
−
            protocol in use.
 
  
−
      Access:
+
          Definition:
−
            read-write.
+
              The subnet mask associated with the IP address of this
 +
              entry.  The value of the mask is an IP address with all
 +
              the network bits set to 1 and all the hosts bits set to
 +
              0.
  
−
      Status:
+
          Access:
−
            mandatory.
+
              read-only.
  
 +
          Status:
 +
              mandatory.
  
−
      OBJECT:
 
−
      -------
 
−
            ipRouteIfIndex  { ipRouteEntry 2 }
 
  
−
      Syntax:
+
          OBJECT:
−
            INTEGER
+
          -------
 +
              ipAdEntBcastAddr { ipAddrEntry 4 }
  
−
      Definition:
+
          Syntax:
−
            The index value which uniquely identifies the local
+
              INTEGER
−
            interface through which the next hop of this route should
 
−
            be reached.  The interface identified by a particular
 
−
            value of this index is the same interface as identified
 
−
            by the same value of ifIndex.
 
  
−
      Access:
+
          Definition:
−
            read-write.
+
              The value of the least-significant bit in the IP
 +
              broadcast address used for sending datagrams on the
 +
              (logical) interface associated with the IP address of
 +
              this entry.  For example, when the Internet standard
 +
              all-ones broadcast address is used, the value will be 1.
  
−
      Status:
+
          Access:
−
            mandatory.
+
              read-only.
  
 +
          Status:
 +
              mandatory.
  
 +
5.4.2.  The IP Routing Table
  
 +
  The IP Routing Table contains an entry for each route
 +
  presently known to this entity.  Note that the action to be
 +
  taken in response to a request to read a non-existent entry,
 +
  is specific to the network management protocol being used.
  
  
−
      OBJECT:
+
          OBJECT:
−
      -------
+
          -------
−
            ipRouteMetric1 { ipRouteEntry 3 }
+
              ipRoutingTable { ip 21 }
  
−
      Syntax:
 
−
            INTEGER
 
  
−
      Definition:
 
−
            The primary routing metric for this route.  The semantics
 
−
            of this metric are determined by the routing-protocol
 
−
            specified in the route's ipRouteProto value.  If this
 
−
            metric is not used, its value should be set to -1.
 
  
−
      Access:
 
−
            read-write.
 
  
−
      Status:
+
McCloghrie & Rose                                           
−
            mandatory.
 
  
 +
RFC 1156                          MIB                          May 1990
  
−
      OBJECT:
 
−
      -------
 
−
            ipRouteMetric2 { ipRouteEntry 4 }
 
  
−
      Syntax:
+
          Syntax:
−
            INTEGER
+
              SEQUENCE OF IpRouteEntry
  
−
      Definition:
+
          Definition:
−
            An alternate routing metric for this route.  The
+
              This entity's IP Routing table.
−
            semantics of this metric are determined by the routing-
 
−
            protocol specified in the route's ipRouteProto value.  If
 
−
            this metric is not used, its value should be set to -1.
 
  
−
      Access:
+
          Access:
−
            read-write.
+
              read-write.
  
−
      Status:
+
          Status:
−
            mandatory.
+
              mandatory.
  
  
−
      OBJECT:
+
          OBJECT:
−
      -------
+
          -------
−
            ipRouteMetric3 { ipRouteEntry 5 }
+
              ipRouteEntry { ipRoutingTable 1 }
  
−
      Syntax:
+
          Syntax:
−
            INTEGER
+
              IpRouteEntry ::= SEQUENCE {
 +
                    ipRouteDest
 +
                        IpAddress,
 +
                    ipRouteIfIndex
 +
                        INTEGER,
 +
                    ipRouteMetric1
 +
                        INTEGER,
 +
                    ipRouteMetric2
 +
                        INTEGER,
 +
                    ipRouteMetric3
 +
                        INTEGER,
 +
                    ipRouteMetric4
 +
                        INTEGER,
 +
                    ipRouteNextHop
 +
                        IpAddress,
 +
                    ipRouteType
 +
                        INTEGER,
 +
                    ipRouteProto
 +
                        INTEGER,
 +
                    ipRouteAge
 +
                        INTEGER
 +
              }
  
 +
          Definition:
 +
              A route to a particular destination.
  
 +
          Access:
 +
              read-write.
  
  
Line 2,040: Line 2,072:
  
  
−
      Definition:
+
McCloghrie & Rose                                           
−
            An alternate routing metric for this route.  The
 
−
            semantics of this metric are determined by the routing-
 
−
            protocol specified in the route's ipRouteProto value.  If
 
−
            this metric is not used, its value should be set to -1.
 
  
−
        Access:
+
RFC 1156                          MIB                          May 1990
−
            read-write.
 
  
−
        Status:
 
−
            mandatory.
 
  
 +
          Status:
 +
              mandatory.
  
−
      OBJECT:
+
          We now consider the individual components of each route in the
−
      -------
+
          IP Routing Table:
−
            ipRouteMetric4 { ipRouteEntry 6 }
 
  
−
      Syntax:
 
−
            INTEGER
 
  
−
      Definition:
+
          OBJECT:
−
            An alternate routing metric for this route.  The
+
          -------
−
            semantics of this metric are determined by the routing-
+
              ipRouteDest { ipRouteEntry 1 }
−
            protocol specified in the route's ipRouteProto value.  If
 
−
            this metric is not used, its value should be set to -1.
 
  
−
      Access:
+
          Syntax:
−
            read-write.
+
              IpAddress
  
−
      Status:
+
          Definition:
−
            mandatory.
+
              The destination IP address of this route.  An entry with
 +
              a value of 0.0.0.0 is considered a default route.
 +
              Multiple such default routes can appear in the table, but
 +
              access to such multiple entries is dependent on the
 +
              table-access mechanisms defined by the network management
 +
              protocol in use.
  
 +
          Access:
 +
              read-write.
  
−
      OBJECT:
+
          Status:
−
      -------
+
              mandatory.
−
            ipRouteNextHop { ipRouteEntry 7 }
 
  
−
      Syntax:
 
−
            IpAddress
 
  
−
      Definition:
+
          OBJECT:
−
            The IP address of the next hop of this route.
+
          -------
 +
              ipRouteIfIndex  { ipRouteEntry 2 }
  
−
      Access:
+
          Syntax:
−
            read-write.
+
              INTEGER
  
−
      Status:
+
          Definition:
−
            mandatory.
+
              The index value which uniquely identifies the local
 +
              interface through which the next hop of this route should
 +
              be reached.  The interface identified by a particular
 +
              value of this index is the same interface as identified
 +
              by the same value of ifIndex.
  
 +
          Access:
 +
              read-write.
  
 +
          Status:
 +
              mandatory.
  
  
  
−
      OBJECT:
+
McCloghrie & Rose                                           
−
      -------
 
−
            ipRouteType { ipRouteEntry 8 }
 
  
−
      Syntax:
+
RFC 1156                          MIB                          May 1990
−
            INTEGER {
 
−
                other(1),        -- none of the following
 
  
−
                invalid(2),      -- an invalidated route
 
  
−
                                  -- route to directly
+
          OBJECT:
−
                direct(3),      -- connected (sub-)network
+
          -------
 +
              ipRouteMetric1 { ipRouteEntry 3 }
  
−
                                  -- route to a non-local
+
          Syntax:
−
                remote(4),      -- host/network/sub-network
+
              INTEGER
−
            }
 
  
−
      Definition:
+
          Definition:
−
            The type of route.
+
              The primary routing metric for this route.  The semantics
 +
              of this metric are determined by the routing-protocol
 +
              specified in the route's ipRouteProto value.  If this
 +
              metric is not used, its value should be set to -1.
  
−
      Access:
+
          Access:
−
            read-write.
+
              read-write.
  
−
      Status:
+
          Status:
−
            mandatory.
+
              mandatory.
  
  
−
      OBJECT:
+
          OBJECT:
−
      -------
+
          -------
−
            ipRouteProto { ipRouteEntry 9 }
+
              ipRouteMetric2 { ipRouteEntry 4 }
  
−
      Syntax:
+
          Syntax:
−
            INTEGER {
+
              INTEGER
−
                other(1),      -- none of the following
 
  
−
                                -- non-protocol information,
+
          Definition:
−
                                -- e.g., manually configured
+
              An alternate routing metric for this route.  The
−
                local(2),       -- entries
+
              semantics of this metric are determined by the routing-
 +
              protocol specified in the route's ipRouteProto value. If
 +
              this metric is not used, its value should be set to -1.
  
−
                                -- set via a network management
+
          Access:
−
                netmgmt(3),    -- protocol
+
              read-write.
  
−
                                -- obtained via ICMP,
+
          Status:
−
                icmp(4),        -- e.g., Redirect
+
              mandatory.
  
−
                                -- the remaining values are
 
−
                                -- all gateway routing protocols
 
−
                egp(5),
 
  
 +
          OBJECT:
 +
          -------
 +
              ipRouteMetric3 { ipRouteEntry 5 }
  
 +
          Syntax:
 +
              INTEGER
  
  
  
−
                ggp(6),
 
−
                hello(7),
 
−
                rip(8),
 
−
                is-is(9),
 
−
                es-is(10),
 
−
                ciscoIgrp(11),
 
−
                bbnSpfIgp(12),
 
−
                oigp(13)
 
−
            }
 
  
−
      Definition:
 
−
            The routing mechanism via which this route was learned.
 
−
            Inclusion of values for gateway routing protocols is not
 
−
            intended to imply that hosts should support those
 
−
            protocols.
 
  
−
      Access:
+
McCloghrie & Rose                                           
−
            read-only.
 
  
−
      Status:
+
RFC 1156                          MIB                          May 1990
−
            mandatory.
 
  
  
−
      OBJECT:
+
          Definition:
−
      -------
+
              An alternate routing metric for this route.  The
−
            ipRouteAge { ipRouteEntry 10 }
+
              semantics of this metric are determined by the routing-
 +
              protocol specified in the route's ipRouteProto value.  If
 +
              this metric is not used, its value should be set to -1.
  
−
      Syntax:
+
          Access:
−
            INTEGER
+
              read-write.
  
−
      Definition:
+
          Status:
−
            The number of seconds since this route was last updated
+
              mandatory.
−
            or otherwise determined to be correct.  Note that no
 
−
            semantics of "too old" can be implied except through
 
−
            knowledge of the routing protocol by which the route was
 
−
            learned.
 
  
−
      Access:
 
−
            read-write.
 
  
−
      Status:
+
          OBJECT:
−
            mandatory.
+
          -------
 +
              ipRouteMetric4 { ipRouteEntry 6 }
  
 +
          Syntax:
 +
              INTEGER
  
 +
          Definition:
 +
              An alternate routing metric for this route.  The
 +
              semantics of this metric are determined by the routing-
 +
              protocol specified in the route's ipRouteProto value.  If
 +
              this metric is not used, its value should be set to -1.
  
 +
          Access:
 +
              read-write.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              ipRouteNextHop { ipRouteEntry 7 }
  
 +
          Syntax:
 +
              IpAddress
  
 +
          Definition:
 +
              The IP address of the next hop of this route.
  
 +
          Access:
 +
              read-write.
  
 +
          Status:
 +
              mandatory.
  
−
=== The ICMP Group ===
 
  
−
Implementation of the ICMP group is mandatory for all systems.
 
  
−
The ICMP group contains the ICMP input and output statistics.
+
McCloghrie & Rose                                           
  
−
Note that individual counters for ICMP message (sub-)codes have been
+
RFC 1156                          MIB                           May 1990
−
omitted from this (version of the) MIB for simplicity.
 
  
  
−
      OBJECT:
+
          OBJECT:
−
      -------
+
          -------
−
            icmpInMsgs { icmp 1 }
+
              ipRouteType { ipRouteEntry 8 }
  
−
      Syntax:
+
          Syntax:
−
            Counter
+
              INTEGER {
 +
                    other(1),        -- none of the following
  
−
      Definition:
+
                    invalid(2),      -- an invalidated route
−
            The total number of ICMP messages which the entity
 
−
            received.  Note that this counter includes all those
 
−
            counted by icmpInErrors.
 
  
−
      Access:
+
                                    -- route to directly
−
            read-only.
+
                    direct(3),      -- connected (sub-)network
  
−
      Status:
+
                                    -- route to a non-local
−
            mandatory.
+
                    remote(4),      -- host/network/sub-network
 +
              }
  
 +
          Definition:
 +
              The type of route.
  
−
      OBJECT:
+
          Access:
−
      -------
+
              read-write.
−
            icmpInErrors { icmp 2 }
 
  
−
      Syntax:
+
          Status:
−
            Counter
+
              mandatory.
  
−
      Definition:
 
−
            The number of ICMP messages which the entity received but
 
−
            determined as having errors (bad ICMP checksums, bad
 
−
            length, etc.).
 
  
−
      Access:
+
          OBJECT:
−
            read-only.
+
          -------
 +
              ipRouteProto { ipRouteEntry 9 }
  
−
      Status:
+
          Syntax:
−
            mandatory.
+
              INTEGER {
 +
                    other(1),      -- none of the following
  
 +
                                    -- non-protocol information,
 +
                                    -- e.g., manually configured
 +
                    local(2),      -- entries
  
 +
                                    -- set via a network management
 +
                    netmgmt(3),    -- protocol
  
 +
                                    -- obtained via ICMP,
 +
                    icmp(4),        -- e.g., Redirect
  
 +
                                    -- the remaining values are
 +
                                    -- all gateway routing protocols
 +
                    egp(5),
  
  
  
−
      OBJECT:
+
McCloghrie & Rose                                           
−
      -------
 
−
          icmpInDestUnreachs { icmp 3 }
 
  
−
      Syntax:
+
RFC 1156                          MIB                          May 1990
−
          Counter
 
  
−
      Definition:
 
−
            The number of ICMP Destination Unreachable messages
 
−
            received.
 
  
−
      Access:
+
                    ggp(6),
−
            read-only.
+
                    hello(7),
 +
                    rip(8),
 +
                    is-is(9),
 +
                    es-is(10),
 +
                    ciscoIgrp(11),
 +
                    bbnSpfIgp(12),
 +
                    oigp(13)
 +
              }
  
−
      Status:
+
          Definition:
−
            mandatory.
+
              The routing mechanism via which this route was learned.
 +
              Inclusion of values for gateway routing protocols is not
 +
              intended to imply that hosts should support those
 +
              protocols.
  
 +
          Access:
 +
              read-only.
  
−
      OBJECT:
+
          Status:
−
      -------
+
              mandatory.
−
            icmpInTimeExcds { icmp 4 }
 
  
−
      Syntax:
 
−
            Counter
 
  
−
      Definition:
+
          OBJECT:
−
            The number of ICMP Time Exceeded messages received.
+
          -------
 +
              ipRouteAge { ipRouteEntry 10 }
  
−
      Access:
+
          Syntax:
−
            read-only.
+
              INTEGER
  
−
      Status:
+
          Definition:
−
            mandatory.
+
              The number of seconds since this route was last updated
 +
              or otherwise determined to be correct.  Note that no
 +
              semantics of "too old" can be implied except through
 +
              knowledge of the routing protocol by which the route was
 +
              learned.
  
 +
          Access:
 +
              read-write.
  
−
      OBJECT:
+
          Status:
−
      -------
+
              mandatory.
−
            icmpInParmProbs { icmp 5 }
 
  
−
      Syntax:
 
−
            Counter
 
  
−
      Definition:
 
−
            The number of ICMP Parameter Problem messages received.
 
  
−
      Access:
 
−
            read-only.
 
  
  
Line 2,305: Line 2,352:
  
  
−
      Status:
+
McCloghrie & Rose                                           
−
            mandatory.
 
  
 +
RFC 1156                          MIB                          May 1990
  
−
      OBJECT:
 
−
      -------
 
−
            icmpInSrcQuenchs { icmp 6 }
 
  
−
      Syntax:
+
5.5.  The ICMP Group
−
            Counter
 
  
−
      Definition:
+
  Implementation of the ICMP group is mandatory for all systems.
−
            The number of ICMP Source Quench messages received.
 
  
−
      Access:
+
  The ICMP group contains the ICMP input and output statistics.
−
            read-only.
 
  
−
      Status:
+
  Note that individual counters for ICMP message (sub-)codes have been
−
            mandatory.
+
  omitted from this (version of the) MIB for simplicity.
  
  
−
      OBJECT:
+
          OBJECT:
−
      -------
+
          -------
−
            icmpInRedirects { icmp 7 }
+
              icmpInMsgs { icmp 1 }
  
−
      Syntax:
+
          Syntax:
−
            Counter
+
              Counter
  
−
      Definition:
+
          Definition:
−
            The number of ICMP Redirect messages received.
+
              The total number of ICMP messages which the entity
 +
              received.  Note that this counter includes all those
 +
              counted by icmpInErrors.
  
−
      Access:
+
          Access:
−
            read-only.
+
              read-only.
  
−
      Status:
+
          Status:
−
            mandatory.
+
              mandatory.
  
  
−
      OBJECT:
+
          OBJECT:
−
      -------
+
          -------
−
            icmpInEchos { icmp 8 }
+
              icmpInErrors { icmp 2 }
  
−
      Syntax:
+
          Syntax:
−
            Counter
+
              Counter
  
−
      Definition:
+
          Definition:
−
            The number of ICMP Echo (request) messages received.
+
              The number of ICMP messages which the entity received but
 +
              determined as having errors (bad ICMP checksums, bad
 +
              length, etc.).
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
  
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
+
McCloghrie & Rose                                           
−
            mandatory.
 
  
 +
RFC 1156                          MIB                          May 1990
  
−
      OBJECT:
 
−
      -------
 
−
            icmpInEchoReps { icmp 9 }
 
  
−
      Syntax:
+
          OBJECT:
−
            Counter
+
          -------
 +
              icmpInDestUnreachs { icmp 3 }
  
−
      Definition:
+
          Syntax:
−
            The number of ICMP Echo Reply messages received.
+
              Counter
  
−
      Access:
+
          Definition:
−
            read-only.
+
              The number of ICMP Destination Unreachable messages
 +
              received.
  
−
      Status:
+
          Access:
−
            mandatory.
+
              read-only.
  
 +
          Status:
 +
              mandatory.
  
−
      OBJECT:
 
−
      -------
 
−
            icmpInTimestamps { icmp 10 }
 
  
−
      Syntax:
+
          OBJECT:
−
            Counter
+
          -------
 +
              icmpInTimeExcds { icmp 4 }
  
−
      Definition:
+
          Syntax:
−
            The number of ICMP Timestamp (request) messages received.
+
              Counter
  
−
      Access:
+
          Definition:
−
            read-only.
+
              The number of ICMP Time Exceeded messages received.
  
−
      Status:
+
          Access:
−
            mandatory.
+
              read-only.
  
 +
          Status:
 +
              mandatory.
  
−
      OBJECT:
 
−
      -------
 
−
            icmpInTimestampReps { icmp 11 }
 
  
−
      Syntax:
+
          OBJECT:
−
            Counter
+
          -------
 +
              icmpInParmProbs { icmp 5 }
  
 +
          Syntax:
 +
              Counter
  
 +
          Definition:
 +
              The number of ICMP Parameter Problem messages received.
  
 +
          Access:
 +
              read-only.
  
  
  
−
      Definition:
 
−
            The number of ICMP Timestamp Reply messages received.
 
  
−
      Access:
+
McCloghrie & Rose                                           
−
            read-only.
 
  
−
      Status:
+
RFC 1156                          MIB                          May 1990
−
            mandatory.
 
  
  
−
      OBJECT:
+
          Status:
−
      -------
+
              mandatory.
−
            icmpInAddrMasks { icmp 12 }
 
  
−
      Syntax:
 
−
            Counter
 
  
−
      Definition:
+
          OBJECT:
−
            The number of ICMP Address Mask Request messages
+
          -------
−
            received.
+
              icmpInSrcQuenchs { icmp 6 }
  
−
      Access:
+
          Syntax:
−
            read-only.
+
              Counter
  
−
      Status:
+
          Definition:
−
            mandatory.
+
              The number of ICMP Source Quench messages received.
  
 +
          Access:
 +
              read-only.
  
−
      OBJECT:
+
          Status:
−
      -------
+
              mandatory.
−
            icmpInAddrMaskReps { icmp 13 }
 
  
−
      Syntax:
 
−
            Counter
 
  
−
      Definition:
+
          OBJECT:
−
            The number of ICMP Address Mask Reply messages received.
+
          -------
 +
              icmpInRedirects { icmp 7 }
  
−
      Access:
+
          Syntax:
−
            read-only.
+
              Counter
  
−
      Status:
+
          Definition:
−
            mandatory.
+
              The number of ICMP Redirect messages received.
  
 +
          Access:
 +
              read-only.
  
−
      OBJECT:
+
          Status:
−
      -------
+
              mandatory.
−
            icmpOutMsgs { icmp 14 }
 
  
  
 +
          OBJECT:
 +
          -------
 +
              icmpInEchos { icmp 8 }
  
 +
          Syntax:
 +
              Counter
  
 +
          Definition:
 +
              The number of ICMP Echo (request) messages received.
  
−
      Syntax:
 
−
            Counter
 
  
−
      Definition:
 
−
            The total number of ICMP messages which this entity
 
−
            attempted to send.  Note that this counter includes all
 
−
            those counted by icmpOutErrors.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
+
McCloghrie & Rose                                           
−
            mandatory.
 
  
 +
RFC 1156                          MIB                          May 1990
  
−
      OBJECT:
 
−
      -------
 
−
            icmpOutErrors { icmp 15 }
 
  
−
      Syntax:
+
          Access:
−
            Counter
+
              read-only.
  
−
      Definition:
+
          Status:
−
            The number of ICMP messages which this entity did not
+
              mandatory.
−
            send due to problems discovered within ICMP such as a
 
−
            lack of buffers.  This value should not include errors
 
−
            discovered outside the ICMP layer such as the inability
 
−
            of IP to route the resultant datagram.  In some
 
−
            implementations there may be no types of error which
 
−
            contribute to this counter's value.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
+
          OBJECT:
−
            mandatory.
+
          -------
 +
              icmpInEchoReps { icmp 9 }
  
 +
          Syntax:
 +
              Counter
  
−
      OBJECT:
+
          Definition:
−
      -------
+
              The number of ICMP Echo Reply messages received.
−
            icmpOutDestUnreachs { icmp 16 }
 
  
−
      Syntax:
+
          Access:
−
            Counter
+
              read-only.
  
−
      Definition:
+
          Status:
−
            The number of ICMP Destination Unreachable messages sent.
+
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              icmpInTimestamps { icmp 10 }
  
 +
          Syntax:
 +
              Counter
  
 +
          Definition:
 +
              The number of ICMP Timestamp (request) messages received.
  
 +
          Access:
 +
              read-only.
  
−
      Access:
+
          Status:
−
            read-only.
+
              mandatory.
  
−
      Status:
 
−
            mandatory.
 
  
 +
          OBJECT:
 +
          -------
 +
              icmpInTimestampReps { icmp 11 }
  
−
      OBJECT:
+
          Syntax:
−
      -------
+
              Counter
−
            icmpOutTimeExcds { icmp 17 }
 
  
−
      Syntax:
 
−
            Counter
 
  
−
      Definition:
 
−
            The number of ICMP Time Exceeded messages sent.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
+
McCloghrie & Rose                                           
−
            mandatory.
 
  
 +
RFC 1156                          MIB                          May 1990
  
−
      OBJECT:
 
−
      -------
 
−
            icmpOutParmProbs { icmp 18 }
 
  
−
      Syntax:
+
          Definition:
−
            Counter
+
              The number of ICMP Timestamp Reply messages received.
  
−
      Definition:
+
          Access:
−
            The number of ICMP Parameter Problem messages sent.
+
              read-only.
  
−
      Access:
+
          Status:
−
            read-only.
+
              mandatory.
  
−
      Status:
 
−
            mandatory.
 
  
 +
          OBJECT:
 +
          -------
 +
              icmpInAddrMasks { icmp 12 }
  
−
      OBJECT:
+
          Syntax:
−
      -------
+
              Counter
−
            icmpOutSrcQuenchs { icmp 19 }
 
  
−
      Syntax:
+
          Definition:
−
            Counter
+
              The number of ICMP Address Mask Request messages
 +
              received.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              icmpInAddrMaskReps { icmp 13 }
  
 +
          Syntax:
 +
              Counter
  
−
      Definition:
+
          Definition:
−
            The number of ICMP Source Quench messages sent.
+
              The number of ICMP Address Mask Reply messages received.
  
−
      Access:
+
          Access:
−
            read-only.
+
              read-only.
  
−
      Status:
+
          Status:
−
            mandatory.
+
              mandatory.
  
  
−
      OBJECT:
+
          OBJECT:
−
      -------
+
          -------
−
            icmpOutRedirects { icmp 20 }
+
              icmpOutMsgs { icmp 14 }
  
−
      Syntax:
 
−
            Counter
 
  
−
      Definition:
 
−
            The number of ICMP Redirect messages sent.
 
  
−
      Access:
+
McCloghrie & Rose                                           
−
            read-only.
 
  
−
      Status:
+
RFC 1156                          MIB                          May 1990
−
            mandatory.
 
  
  
−
      OBJECT:
+
          Syntax:
−
      -------
+
              Counter
−
            icmpOutEchos { icmp 21 }
 
  
−
      Syntax:
+
          Definition:
−
            Counter
+
              The total number of ICMP messages which this entity
 +
              attempted to send.  Note that this counter includes all
 +
              those counted by icmpOutErrors.
  
−
      Definition:
+
          Access:
−
            The number of ICMP Echo (request) messages sent.
+
              read-only.
  
−
      Access:
+
          Status:
−
            read-only.
+
              mandatory.
  
−
      Status:
 
−
            mandatory.
 
  
 +
          OBJECT:
 +
          -------
 +
              icmpOutErrors { icmp 15 }
  
−
      OBJECT:
+
          Syntax:
−
      -------
+
              Counter
−
            icmpOutEchoReps { icmp 22 }
 
  
 +
          Definition:
 +
              The number of ICMP messages which this entity did not
 +
              send due to problems discovered within ICMP such as a
 +
              lack of buffers.  This value should not include errors
 +
              discovered outside the ICMP layer such as the inability
 +
              of IP to route the resultant datagram.  In some
 +
              implementations there may be no types of error which
 +
              contribute to this counter's value.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              icmpOutDestUnreachs { icmp 16 }
  
−
      Syntax:
+
          Syntax:
−
            Counter
+
              Counter
  
−
      Definition:
+
          Definition:
−
            The number of ICMP Echo Reply messages sent.
+
              The number of ICMP Destination Unreachable messages sent.
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
 
−
            mandatory.
 
  
  
−
      OBJECT:
+
McCloghrie & Rose                                           
−
      -------
 
−
            icmpOutTimestamps { icmp 23 }
 
  
−
      Syntax:
+
RFC 1156                          MIB                          May 1990
−
            Counter
 
  
−
      Definition:
 
−
            The number of ICMP Timestamp (request) messages sent.
 
  
−
      Access:
+
          Access:
−
            read-only.
+
              read-only.
  
−
      Status:
+
          Status:
−
            mandatory.
+
              mandatory.
  
  
−
      OBJECT:
+
          OBJECT:
−
      -------
+
          -------
−
            icmpOutTimestampReps { icmp 24 }
+
              icmpOutTimeExcds { icmp 17 }
  
−
      Syntax:
+
          Syntax:
−
            Counter
+
              Counter
  
−
      Definition:
+
          Definition:
−
            The number of ICMP Timestamp Reply messages sent.
+
              The number of ICMP Time Exceeded messages sent.
  
−
      Access:
+
          Access:
−
            read-only.
+
              read-only.
  
−
      Status:
+
          Status:
−
            mandatory.
+
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              icmpOutParmProbs { icmp 18 }
  
 +
          Syntax:
 +
              Counter
  
 +
          Definition:
 +
              The number of ICMP Parameter Problem messages sent.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
−
      OBJECT:
+
          OBJECT:
−
      -------
+
          -------
−
            icmpOutAddrMasks { icmp 25 }
+
              icmpOutSrcQuenchs { icmp 19 }
  
−
      Syntax:
+
          Syntax:
−
            Counter
+
              Counter
  
−
      Definition:
 
−
            The number of ICMP Address Mask Request messages sent.
 
  
−
      Access:
 
−
            read-only.
 
  
−
      Status:
 
−
            mandatory.
 
  
 +
McCloghrie & Rose                                           
  
−
      OBJECT:
+
RFC 1156                          MIB                          May 1990
−
      -------
 
−
            icmpOutAddrMaskReps { icmp 26 }
 
−
 
 
−
      Syntax:
 
−
            Counter
 
−
 
 
−
      Definition:
 
−
            The number of ICMP Address Mask Reply messages sent.
 
−
 
 
−
      Access:
 
−
            read-only.
 
−
 
 
−
      Status:
 
−
            mandatory.
 
  
  
 +
          Definition:
 +
              The number of ICMP Source Quench messages sent.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              icmpOutRedirects { icmp 20 }
  
 +
          Syntax:
 +
              Counter
  
 +
          Definition:
 +
              The number of ICMP Redirect messages sent.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              icmpOutEchos { icmp 21 }
  
 +
          Syntax:
 +
              Counter
  
 +
          Definition:
 +
              The number of ICMP Echo (request) messages sent.
  
 +
          Access:
 +
              read-only.
  
 +
          Status:
 +
              mandatory.
  
  
 +
          OBJECT:
 +
          -------
 +
              icmpOutEchoReps { icmp 22 }
  
  
  
−
=== The TCP Group ===
 
  
−
Implementation of the TCP group is mandatory for all systems
+
McCloghrie & Rose                                           
−
that implement the TCP protocol.
 
  
−
Note that instances of object types that represent information
+
RFC 1156                          MIB                          May 1990
−
about a particular TCP connection are transient; they persist
 
−
only as long as the connection in question.
 
  
−
          OBJECT:
 
−
          -------
 
−
              tcpRtoAlgorithm { tcp 1 }
 
  
 
           Syntax:
 
           Syntax:
−
               INTEGER {
+
               Counter
−
                    other(1),    -- none of the following
 
−
                    constant(2), -- a constant rto
 
−
                    rsre(3),    -- MIL-STD-1778, Appendix B
 
−
                    vanj(4)      -- Van Jacobson's algorithm [15]
 
−
              }
 
  
 
           Definition:
 
           Definition:
−
               The algorithm used to determine the timeout value used
+
               The number of ICMP Echo Reply messages sent.
−
              for retransmitting unacknowledged octets.
 
  
 
           Access:
 
           Access:
Line 2,763: Line 2,820:
 
           OBJECT:
 
           OBJECT:
 
           -------
 
           -------
−
               tcpRtoMin { tcp 2 }
+
               icmpOutTimestamps { icmp 23 }
  
 
           Syntax:
 
           Syntax:
−
               INTEGER
+
               Counter
  
 
           Definition:
 
           Definition:
−
               The minimum value permitted by a TCP implementation
+
               The number of ICMP Timestamp (request) messages sent.
−
              for the retransmission timeout, measured in
 
−
              milliseconds.  More refined semantics for objects
 
−
              of this type depend upon the algorithm used to
 
−
              determine the retransmission timeout.  In particular,
 
−
              when the timeout algorithm is rsre(3), an object
 
−
              of this type has the semantics of the LBOUND
 
−
              quantity described in [[RFC793|RFC 793]].
 
−
 
 
−
 
 
−
 
 
−
 
 
  
 
           Access:
 
           Access:
Line 2,791: Line 2,837:
 
           OBJECT:
 
           OBJECT:
 
           -------
 
           -------
−
               tcpRtoMax { tcp 3 }
+
               icmpOutTimestampReps { icmp 24 }
  
 
           Syntax:
 
           Syntax:
−
               INTEGER
+
               Counter
  
 
           Definition:
 
           Definition:
−
               The maximum value permitted by a TCP implementation
+
               The number of ICMP Timestamp Reply messages sent.
−
              for the retransmission timeout, measured
 
−
              in milliseconds.  More refined semantics for objects
 
−
              of this type depend upon the algorithm used to
 
−
              determine the retransmission timeout.  In particular,
 
−
              when the timeout algorithm is rsre(3), an object of
 
−
              this type has the semantics of the UBOUND quantity
 
−
              described in [[RFC793|RFC 793]].
 
  
 
           Access:
 
           Access:
Line 2,813: Line 2,852:
  
  
−
          OBJECT:
 
−
          -------
 
−
              tcpMaxConn { tcp 4 }
 
  
−
          Syntax:
 
−
              INTEGER
 
−
 
−
          Definition:
 
−
              The limit on the total number of TCP connections the
 
−
              entity can support.  In entities where the maximum
 
−
              number of connections is dynamic, this object should
 
−
              contain the value "-1".
 
−
 
−
          Access:
 
−
              read-only.
 
  
  
  
 +
McCloghrie & Rose                                           
  
−
 
+
RFC 1156                          MIB                          May 1990
−
 
 
−
 
 
−
          Status:
 
−
              mandatory.
 
  
  
 
           OBJECT:
 
           OBJECT:
 
           -------
 
           -------
−
               tcpActiveOpens { tcp 5 }
+
               icmpOutAddrMasks { icmp 25 }
  
 
           Syntax:
 
           Syntax:
Line 2,847: Line 2,869:
  
 
           Definition:
 
           Definition:
−
               The number of times TCP connections have made a direct
+
               The number of ICMP Address Mask Request messages sent.
−
              transition to the SYN-SENT state from the CLOSED
 
−
              state.
 
  
 
           Access:
 
           Access:
Line 2,860: Line 2,880:
 
           OBJECT:
 
           OBJECT:
 
           -------
 
           -------
−
               tcpPassiveOpens { tcp 6 }
+
               icmpOutAddrMaskReps { icmp 26 }
  
 
           Syntax:
 
           Syntax:
Line 2,866: Line 2,886:
  
 
           Definition:
 
           Definition:
−
               The number of times TCP connections have made a direct
+
               The number of ICMP Address Mask Reply messages sent.
−
              transition to the SYN-RCVD state from the LISTEN
 
−
              state.
 
  
 
           Access:
 
           Access:
Line 2,877: Line 2,895:
  
  
−
          OBJECT:
 
−
          -------
 
−
              tcpAttemptFails { tcp 7 }
 
  
−
          Syntax:
 
−
              Counter
 
  
  
Line 2,888: Line 2,901:
  
  
−
          Definition:
 
−
              The number of times TCP connections have made a direct
 
−
              transition to the CLOSED state from either the
 
−
              SYN-SENT state or the SYN-RCVD state, plus the number
 
−
              of times TCP connections have made a direct transition
 
−
              to the LISTEN state from the SYN-RCVD state.
 
  
−
          Access:
 
−
              read-only.
 
  
−
          Status:
 
−
              mandatory.
 
  
  
−
          OBJECT:
 
−
          -------
 
−
              tcpEstabResets { tcp 8 }
 
  
−
          Syntax:
 
−
              Counter
 
  
−
          Definition:
 
−
              The number of times TCP connections have made a direct
 
−
              transition to the CLOSED state from either the
 
−
              ESTABLISHED state or the CLOSE-WAIT state.
 
  
−
          Access:
 
−
              read-only.
 
  
−
          Status:
 
−
              mandatory.
 
  
  
−
          OBJECT:
 
−
          -------
 
−
              tcpCurrEstab { tcp 9 }
 
  
−
          Syntax:
+
McCloghrie & Rose                                           
−
              Gauge
+
 
 +
RFC 1156                          MIB                          May 1990
  
−
          Definition:
 
−
              The number of TCP connections for which the current
 
−
              state is either ESTABLISHED or CLOSE-WAIT.
 
  
−
          Access:
+
5.6.  The TCP Group
−
              read-only.
 
  
 +
  Implementation of the TCP group is mandatory for all systems
 +
  that implement the TCP protocol.
  
 +
  Note that instances of object types that represent information
 +
  about a particular TCP connection are transient; they persist
 +
  only as long as the connection in question.
  
 +
            OBJECT:
 +
            -------
 +
                  tcpRtoAlgorithm { tcp 1 }
  
 +
            Syntax:
 +
                  INTEGER {
 +
                      other(1),    -- none of the following
 +
                      constant(2), -- a constant rto
 +
                      rsre(3),    -- MIL-STD-1778, Appendix B
 +
                      vanj(4)      -- Van Jacobson's algorithm [15]
 +
                  }
  
 +
            Definition:
 +
                  The algorithm used to determine the timeout value used
 +
                  for retransmitting unacknowledged octets.
  
 +
            Access:
 +
                  read-only.
  
−
          Status:
+
            Status:
−
              mandatory.
+
                  mandatory.
  
  
−
          OBJECT:
+
            OBJECT:
−
          -------
+
            -------
−
              tcpInSegs { tcp 10 }
+
                  tcpRtoMin { tcp 2 }
  
−
          Syntax:
+
            Syntax:
−
              Counter
+
                  INTEGER
  
−
          Definition:
+
            Definition:
−
              The total number of segments received, including those
+
                  The minimum value permitted by a TCP implementation
−
              received in error.  This count includes segments
+
                  for the retransmission timeout, measured in
−
              received on currently established connections.
+
                  milliseconds.  More refined semantics for objects
 +
                  of this type depend upon the algorithm used to
 +
                  determine the retransmission timeout.  In particular,
 +
                  when the timeout algorithm is rsre(3), an object
 +
                  of this type has the semantics of the LBOUND
 +
                  quantity described in RFC 793.
  
−
          Access:
 
−
              read-only.
 
  
−
          Status:
 
−
              mandatory.
 
  
 +
McCloghrie & Rose                                           
  
−
          OBJECT:
+
RFC 1156                          MIB                          May 1990
−
          -------
 
−
              tcpOutSegs { tcp 11 }
 
  
−
          Syntax:
 
−
              Counter
 
  
−
          Definition:
+
            Access:
−
              The total number of segments sent, including those on
+
                  read-only.
−
              current connections but excluding those containing
+
 
−
              only retransmitted octets.
+
            Status:
 +
                  mandatory.
  
−
          Access:
 
−
              read-only.
 
  
−
          Status:
+
            OBJECT:
−
              mandatory.
+
            -------
 +
                  tcpRtoMax { tcp 3 }
  
 +
            Syntax:
 +
                  INTEGER
  
−
          OBJECT:
+
            Definition:
−
          -------
+
                  The maximum value permitted by a TCP implementation
−
              tcpRetransSegs { tcp 12 }
+
                  for the retransmission timeout, measured
 +
                  in milliseconds.  More refined semantics for objects
 +
                  of this type depend upon the algorithm used to
 +
                  determine the retransmission timeout.  In particular,
 +
                  when the timeout algorithm is rsre(3), an object of
 +
                  this type has the semantics of the UBOUND quantity
 +
                  described in RFC 793.
  
−
          Syntax:
+
            Access:
−
              Counter
+
                  read-only.
  
 +
            Status:
 +
                  mandatory.
  
  
 +
            OBJECT:
 +
            -------
 +
                  tcpMaxConn { tcp 4 }
  
 +
            Syntax:
 +
                  INTEGER
  
−
          Definition:
+
            Definition:
−
              The total number of segments retransmitted - that is,
+
                  The limit on the total number of TCP connections the
−
              the number of TCP segments transmitted containing one
+
                  entity can support.  In entities where the maximum
−
              or more previously transmitted octets.
+
                  number of connections is dynamic, this object should
 +
                  contain the value "-1".
  
−
          Access:
+
            Access:
−
              read-only.
+
                  read-only.
  
−
          Status:
 
−
              mandatory.
 
  
  
−
          OBJECT:
 
−
          -------
 
−
              tcpConnTable { tcp 13 }
 
  
−
          Syntax:
 
−
              SEQUENCE OF TcpConnEntry
 
  
−
          Definition:
+
McCloghrie & Rose                                           
−
              A table containing TCP connection-specific
 
−
              information.
 
  
−
          Access:
+
RFC 1156                          MIB                          May 1990
−
              read-only.
 
  
−
          Status:
 
−
              mandatory.
 
  
 +
            Status:
 +
                  mandatory.
  
−
          OBJECT:
 
−
          -------
 
−
              tcpConnEntry { tcpConnTable 1 }
 
  
−
          Syntax:
+
            OBJECT:
−
              TcpConnEntry ::= SEQUENCE {
+
            -------
−
                    tcpConnState
+
                  tcpActiveOpens { tcp 5 }
−
                        INTEGER,
 
−
                    tcpConnLocalAddress
 
−
                        IpAddress,
 
−
                    tcpConnLocalPort
 
−
                        INTEGER (0..65535),
 
−
                    tcpConnRemAddress
 
−
                        IpAddress,
 
−
                    tcpConnRemPort
 
−
                        INTEGER (0..65535)
 
−
              }
 
  
 +
            Syntax:
 +
                  Counter
  
 +
            Definition:
 +
                  The number of times TCP connections have made a direct
 +
                  transition to the SYN-SENT state from the CLOSED
 +
                  state.
  
 +
            Access:
 +
                  read-only.
  
 +
            Status:
 +
                  mandatory.
  
  
−
          Definition:
+
            OBJECT:
−
              Information about a particular current TCP connection.
+
            -------
−
              An object of this type is transient, in that it ceases
+
                  tcpPassiveOpens { tcp 6 }
−
              to exist when (or soon after) the connection makes the
 
−
              transition to the CLOSED state.
 
  
−
          Access:
+
            Syntax:
−
              read-only.
+
                  Counter
  
−
          Status:
+
            Definition:
−
              mandatory.
+
                  The number of times TCP connections have made a direct
 +
                  transition to the SYN-RCVD state from the LISTEN
 +
                  state.
  
 +
            Access:
 +
                  read-only.
  
−
          OBJECT:
+
            Status:
−
          -------
+
                  mandatory.
−
              tcpConnState { tcpConnEntry 1 }
 
  
−
          Syntax:
 
−
              INTEGER {
 
−
                    closed(1),
 
−
                    listen(2),
 
−
                    synSent(3),
 
−
                    synReceived(4),
 
−
                    established(5),
 
−
                    finWait1(6),
 
−
                    finWait2(7),
 
−
                    closeWait(8),
 
−
                    lastAck(9),
 
−
                    closing(10),
 
−
                    timeWait(11)
 
−
              }
 
  
−
          Definition:
+
            OBJECT:
−
              The state of this TCP connection.
+
            -------
 +
                  tcpAttemptFails { tcp 7 }
  
−
          Access:
+
            Syntax:
−
              read-only.
+
                  Counter
  
−
          Status:
 
−
              mandatory.
 
  
  
−
          OBJECT:
+
McCloghrie & Rose                                           
−
          -------
 
−
              tcpConnLocalAddress { tcpConnEntry 2 }
 
  
−
          Syntax:
+
RFC 1156                          MIB                          May 1990
−
              IpAddress
 
  
  
 +
            Definition:
 +
                  The number of times TCP connections have made a direct
 +
                  transition to the CLOSED state from either the
 +
                  SYN-SENT state or the SYN-RCVD state, plus the number
 +
                  of times TCP connections have made a direct transition
 +
                  to the LISTEN state from the SYN-RCVD state.
  
 +
            Access:
 +
                  read-only.
  
 +
            Status:
 +
                  mandatory.
  
−
          Definition:
 
−
              The local IP address for this TCP connection.
 
  
−
          Access:
+
            OBJECT:
−
              read-only.
+
            -------
 +
                  tcpEstabResets { tcp 8 }
  
−
          Status:
+
            Syntax:
−
              mandatory.
+
                  Counter
  
 +
            Definition:
 +
                  The number of times TCP connections have made a direct
 +
                  transition to the CLOSED state from either the
 +
                  ESTABLISHED state or the CLOSE-WAIT state.
  
−
          OBJECT:
+
            Access:
−
          -------
+
                  read-only.
−
              tcpConnLocalPort { tcpConnEntry 3 }
 
  
−
          Syntax:
+
            Status:
−
              INTEGER (0..65535)
+
                  mandatory.
  
−
          Definition:
 
−
              The local port number for this TCP connection.
 
  
−
          Access:
+
            OBJECT:
−
              read-only.
+
            -------
 +
                  tcpCurrEstab { tcp 9 }
  
−
          Status:
+
            Syntax:
−
              mandatory.
+
                  Gauge
  
 +
            Definition:
 +
                  The number of TCP connections for which the current
 +
                  state is either ESTABLISHED or CLOSE-WAIT.
  
−
          OBJECT:
+
            Access:
−
          -------
+
                  read-only.
−
              tcpConnRemAddress { tcpConnEntry 4 }
 
  
−
          Syntax:
 
−
              IpAddress
 
  
−
          Definition:
 
−
              The remote IP address for this TCP connection.
 
  
−
          Access:
 
−
              read-only.
 
  
−
          Status:
 
−
              mandatory.
 
  
 +
McCloghrie & Rose                                           
  
−
          OBJECT:
+
RFC 1156                          MIB                          May 1990
−
          -------
 
−
              tcpConnRemPort { tcpConnEntry 5 }
 
  
  
 +
            Status:
 +
                  mandatory.
  
  
 +
            OBJECT:
 +
            -------
 +
                  tcpInSegs { tcp 10 }
  
 +
            Syntax:
 +
                  Counter
  
−
          Syntax:
+
            Definition:
−
              INTEGER (0..65535)
+
                  The total number of segments received, including those
 +
                  received in error. This count includes segments
 +
                  received on currently established connections.
  
−
          Definition:
+
            Access:
−
              The remote port number for this TCP connection.
+
                  read-only.
  
−
          Access:
+
            Status:
−
              read-only.
+
                  mandatory.
  
−
          Status:
 
−
              mandatory.
 
  
 +
            OBJECT:
 +
            -------
 +
                  tcpOutSegs { tcp 11 }
  
 +
            Syntax:
 +
                  Counter
  
 +
            Definition:
 +
                  The total number of segments sent, including those on
 +
                  current connections but excluding those containing
 +
                  only retransmitted octets.
  
 +
            Access:
 +
                  read-only.
  
 +
            Status:
 +
                  mandatory.
  
  
 +
            OBJECT:
 +
            -------
 +
                  tcpRetransSegs { tcp 12 }
  
 +
            Syntax:
 +
                  Counter
  
  
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
            Definition:
 +
                  The total number of segments retransmitted - that is,
 +
                  the number of TCP segments transmitted containing one
 +
                  or more previously transmitted octets.
  
 +
            Access:
 +
                  read-only.
  
 +
            Status:
 +
                  mandatory.
  
  
 +
            OBJECT:
 +
            -------
 +
                  tcpConnTable { tcp 13 }
  
 +
            Syntax:
 +
                  SEQUENCE OF TcpConnEntry
  
 +
            Definition:
 +
                  A table containing TCP connection-specific
 +
                  information.
  
 +
            Access:
 +
                  read-only.
  
 +
            Status:
 +
                  mandatory.
  
  
 +
            OBJECT:
 +
            -------
 +
                  tcpConnEntry { tcpConnTable 1 }
  
 +
            Syntax:
 +
                  TcpConnEntry ::= SEQUENCE {
 +
                      tcpConnState
 +
                          INTEGER,
 +
                      tcpConnLocalAddress
 +
                          IpAddress,
 +
                      tcpConnLocalPort
 +
                          INTEGER (0..65535),
 +
                      tcpConnRemAddress
 +
                          IpAddress,
 +
                      tcpConnRemPort
 +
                          INTEGER (0..65535)
 +
                  }
  
  
  
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
            Definition:
 +
                  Information about a particular current TCP connection.
 +
                  An object of this type is transient, in that it ceases
 +
                  to exist when (or soon after) the connection makes the
 +
                  transition to the CLOSED state.
  
 +
            Access:
 +
                  read-only.
  
 +
            Status:
 +
                  mandatory.
  
  
 +
            OBJECT:
 +
            -------
 +
                  tcpConnState { tcpConnEntry 1 }
  
 +
            Syntax:
 +
                  INTEGER {
 +
                      closed(1),
 +
                      listen(2),
 +
                      synSent(3),
 +
                      synReceived(4),
 +
                      established(5),
 +
                      finWait1(6),
 +
                      finWait2(7),
 +
                      closeWait(8),
 +
                      lastAck(9),
 +
                      closing(10),
 +
                      timeWait(11)
 +
                  }
  
 +
            Definition:
 +
                  The state of this TCP connection.
  
 +
            Access:
 +
                  read-only.
  
 +
            Status:
 +
                  mandatory.
  
  
−
=== The UDP Group ===
+
            OBJECT:
 +
            -------
 +
                  tcpConnLocalAddress { tcpConnEntry 2 }
  
−
Implementation of the UDP group is mandatory for all systems
+
            Syntax:
−
which implement the UDP protocol.
+
                  IpAddress
  
−
          OBJECT:
 
−
          -------
 
−
              udpInDatagrams { udp 1 }
 
  
−
          Syntax:
 
−
              Counter
 
  
−
          Definition:
+
McCloghrie & Rose                                           
−
              The total number of UDP datagrams delivered to UDP
 
−
              users.
 
  
−
          Access:
+
RFC 1156                          MIB                          May 1990
−
              read-only.
 
  
−
          Status:
 
−
              mandatory.
 
  
 +
            Definition:
 +
                  The local IP address for this TCP connection.
  
−
          OBJECT:
+
            Access:
−
          -------
+
                  read-only.
−
              udpNoPorts { udp 2 }
 
  
−
          Syntax:
+
            Status:
−
              Counter
+
                  mandatory.
  
−
          Definition:
 
−
              The total number of received UDP datagrams for which
 
−
              there was no application at the destination port.
 
  
−
          Access:
+
            OBJECT:
−
              read-only.
+
            -------
 +
                  tcpConnLocalPort { tcpConnEntry 3 }
  
−
          Status:
+
            Syntax:
−
              mandatory.
+
                  INTEGER (0..65535)
  
 +
            Definition:
 +
                  The local port number for this TCP connection.
  
−
          OBJECT:
+
            Access:
−
          -------
+
                  read-only.
−
              udpInErrors { udp 3 }
 
  
−
          Syntax:
+
            Status:
−
              Counter
+
                  mandatory.
  
  
 +
            OBJECT:
 +
            -------
 +
                  tcpConnRemAddress { tcpConnEntry 4 }
  
 +
            Syntax:
 +
                  IpAddress
  
 +
            Definition:
 +
                  The remote IP address for this TCP connection.
  
 +
            Access:
 +
                  read-only.
  
−
          Definition:
+
            Status:
−
              The number of received UDP datagrams that could not be
+
                  mandatory.
−
              delivered for reasons other than the lack of an
 
−
              application at the destination port.
 
  
−
          Access:
 
−
              read-only.
 
  
−
          Status:
+
            OBJECT:
−
              mandatory.
+
            -------
 +
                  tcpConnRemPort { tcpConnEntry 5 }
  
  
−
          OBJECT:
 
−
          -------
 
−
              udpOutDatagrams { udp 4 }
 
  
−
          Syntax:
 
−
              Counter
 
  
−
          Definition:
+
McCloghrie & Rose                                           
−
              The total number of UDP datagrams sent from this
 
−
              entity.
 
  
−
          Access:
+
RFC 1156                          MIB                          May 1990
−
              read-only.
 
  
−
          Status:
 
−
              mandatory.
 
  
 +
            Syntax:
 +
                  INTEGER (0..65535)
  
 +
            Definition:
 +
                  The remote port number for this TCP connection.
  
 +
            Access:
 +
                  read-only.
  
 +
            Status:
 +
                  mandatory.
  
  
Line 3,312: Line 3,397:
  
  
−
=== The EGP Group ===
 
  
−
Implementation of the EGP group is mandatory for all systems
 
−
which implement the EGP protocol.
 
  
−
          OBJECT:
 
−
          -------
 
−
              egpInMsgs { egp 1 }
 
  
−
          Syntax:
 
−
              Counter
 
  
−
          Definition:
 
−
              The number of EGP messages received without error.
 
  
−
          Access:
 
−
              read-only.
 
  
−
          Status:
 
−
              mandatory.
 
  
  
−
          OBJECT:
 
−
          -------
 
−
              egpInErrors { egp 2 }
 
  
−
          Syntax:
 
−
              Counter
 
  
−
          Definition:
 
−
              The number of EGP messages received that proved to be
 
−
              in error.
 
  
−
          Access:
 
−
              read-only.
 
  
−
          Status:
 
−
              mandatory.
 
  
  
−
          OBJECT:
 
−
          -------
 
−
              egpOutMsgs { egp 3 }
 
  
−
          Syntax:
 
−
              Counter
 
  
  
  
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
−
          Definition:
+
5.7.  The UDP Group
−
              The total number of locally generated EGP messages.
 
  
−
          Access:
+
  Implementation of the UDP group is mandatory for all systems
−
              read-only.
+
  which implement the UDP protocol.
  
−
          Status:
+
            OBJECT:
−
              mandatory.
+
            -------
 +
                  udpInDatagrams { udp 1 }
  
 +
            Syntax:
 +
                  Counter
  
−
          OBJECT:
+
            Definition:
−
          -------
+
                  The total number of UDP datagrams delivered to UDP
−
              egpOutErrors { egp 4 }
+
                  users.
  
−
          Syntax:
+
            Access:
−
              Counter
+
                  read-only.
  
−
          Definition:
+
            Status:
−
              The number of locally generated EGP messages not sent
+
                  mandatory.
−
              due to resource limitations within an EGP entity.
 
  
−
          Access:
 
−
              read-only.
 
  
−
          Status:
+
            OBJECT:
−
              mandatory.
+
            -------
 +
                  udpNoPorts { udp 2 }
  
−
==== The EGP Neighbor Table ====
+
            Syntax:
 +
                  Counter
  
−
The Egp Neighbor table contains information about this entity's EGP
+
            Definition:
−
neighbors.
+
                  The total number of received UDP datagrams for which
 +
                  there was no application at the destination port.
  
 +
            Access:
 +
                  read-only.
  
−
          OBJECT:
+
            Status:
−
          -------
+
                  mandatory.
−
              egpNeighTable { egp 5 }
 
  
−
          Syntax:
 
−
              SEQUENCE OF EgpNeighEntry
 
  
−
          Definition:
+
            OBJECT:
−
              The EGP neighbor table.
+
            -------
 +
                  udpInErrors { udp 3 }
  
−
          Access:
+
            Syntax:
−
              read-only.
+
                  Counter
  
−
          Status:
 
−
              mandatory.
 
  
  
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
−
          OBJECT:
 
−
          -------
 
−
              egpNeighEntry { egpNeighTable 1 }
 
  
−
          Syntax:
+
            Definition:
−
              EgpNeighEntry ::= SEQUENCE {
+
                  The number of received UDP datagrams that could not be
−
                    egpNeighState
+
                  delivered for reasons other than the lack of an
−
                        INTEGER,
+
                  application at the destination port.
−
                    egpNeighAddr
 
−
                        IpAddress
 
−
              }
 
  
−
          Definition:
+
            Access:
−
              Information about this entity's relationship with a
+
                  read-only.
−
              particular EGP neighbor.
 
  
−
          Access:
+
            Status:
−
              read-only.
+
                  mandatory.
  
−
          Status:
 
−
              mandatory.
 
  
 +
            OBJECT:
 +
            -------
 +
                  udpOutDatagrams { udp 4 }
  
−
          We now consider the individual components of each EGP
+
            Syntax:
−
          neighbor entry:
+
                  Counter
  
 +
            Definition:
 +
                  The total number of UDP datagrams sent from this
 +
                  entity.
  
−
          OBJECT:
+
            Access:
−
          -------
+
                  read-only.
−
              egpNeighState { egpNeighEntry 1 }
 
  
−
          Syntax:
+
            Status:
−
              INTEGER {
+
                  mandatory.
−
                    idle(1),
 
−
                    acquisition(2),
 
−
                    down(3),
 
−
                    up(4),
 
−
                    cease(5)
 
−
              }
 
  
−
          Definition:
 
−
              The EGP state of the local system with respect to this
 
−
              entry's EGP neighbor.  Each EGP state is represented
 
−
              by a value that is one greater than the numerical
 
−
              value associated with said state in [[RFC904|RFC 904]].
 
  
−
          Access:
 
−
              read-only.
 
  
  
Line 3,471: Line 3,512:
  
  
−
          Status:
 
−
              mandatory.
 
  
  
−
          OBJECT:
 
−
          -------
 
−
              egpNeighAddr { egpNeighEntry 2 }
 
  
−
          Syntax:
 
−
              IpAddress
 
  
−
          Definition:
 
−
              The IP address of this entry's EGP neighbor.
 
  
−
          Access:
 
−
              read-only.
 
  
−
          Status:
 
−
              mandatory.
 
  
  
Line 3,500: Line 3,528:
  
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
5.8.  The EGP Group
  
 +
  Implementation of the EGP group is mandatory for all systems
 +
  which implement the EGP protocol.
  
 +
            OBJECT:
 +
            -------
 +
                  egpInMsgs { egp 1 }
  
 +
            Syntax:
 +
                  Counter
  
 +
            Definition:
 +
                  The number of EGP messages received without error.
  
 +
            Access:
 +
                  read-only.
  
 +
            Status:
 +
                  mandatory.
  
  
 +
            OBJECT:
 +
            -------
 +
                  egpInErrors { egp 2 }
  
 +
            Syntax:
 +
                  Counter
  
 +
            Definition:
 +
                  The number of EGP messages received that proved to be
 +
                  in error.
  
 +
            Access:
 +
                  read-only.
  
 +
            Status:
 +
                  mandatory.
  
  
 +
            OBJECT:
 +
            -------
 +
                  egpOutMsgs { egp 3 }
  
 +
            Syntax:
 +
                  Counter
  
  
Line 3,523: Line 3,584:
  
  
 +
McCloghrie & Rose                                           
  
−
== Definitions ==
+
RFC 1156                          MIB                          May 1990
  
−
            RFC1156-MIB
 
  
−
             DEFINITIONS ::= BEGIN
+
             Definition:
 +
                  The total number of locally generated EGP messages.
  
−
             IMPORTS
+
             Access:
−
                    mgmt, OBJECT-TYPE, NetworkAddress, IpAddress,
+
                  read-only.
−
                    Counter, Gauge, TimeTicks
 
−
                        FROM RFC1155-SMI;
 
  
−
              mib        OBJECT IDENTIFIER ::= { mgmt 1 }
+
            Status:
 +
                  mandatory.
  
−
              system    OBJECT IDENTIFIER ::= { mib 1 }
 
−
              interfaces OBJECT IDENTIFIER ::= { mib 2 }
 
−
              at        OBJECT IDENTIFIER ::= { mib 3 }
 
−
              ip        OBJECT IDENTIFIER ::= { mib 4 }
 
−
              icmp      OBJECT IDENTIFIER ::= { mib 5 }
 
−
              tcp        OBJECT IDENTIFIER ::= { mib 6 }
 
−
              udp        OBJECT IDENTIFIER ::= { mib 7 }
 
−
              egp        OBJECT IDENTIFIER ::= { mib 8 }
 
  
−
              -- object types
+
            OBJECT:
 +
            -------
 +
                  egpOutErrors { egp 4 }
  
−
              -- the System group
+
            Syntax:
 +
                  Counter
  
−
              sysDescr OBJECT-TYPE
+
            Definition:
−
                      SYNTAX  OCTET STRING
+
                  The number of locally generated EGP messages not sent
−
                      ACCESS  read-only
+
                  due to resource limitations within an EGP entity.
−
                      STATUS  mandatory
 
−
                      ::= { system 1 }
 
  
−
              sysObjectID OBJECT-TYPE
+
            Access:
−
                      SYNTAX  OBJECT IDENTIFIER
+
                  read-only.
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { system 2 }
 
  
−
              sysUpTime OBJECT-TYPE
+
            Status:
−
                      SYNTAX  TimeTicks
+
                  mandatory.
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { system 3 }
 
  
−
              -- the Interfaces group
+
5.8.1.  The EGP Neighbor Table
  
−
              ifNumber OBJECT-TYPE
+
  The Egp Neighbor table contains information about this entity's EGP
−
                      SYNTAX  INTEGER
+
  neighbors.
  
  
 +
            OBJECT:
 +
            -------
 +
                  egpNeighTable { egp 5 }
  
 +
            Syntax:
 +
                  SEQUENCE OF EgpNeighEntry
  
 +
            Definition:
 +
                  The EGP neighbor table.
  
−
                      ACCESS  read-only
+
            Access:
−
                      STATUS  mandatory
+
                  read-only.
−
                      ::= { interfaces 1 }
 
  
−
              -- the Interfaces table
+
            Status:
 +
                  mandatory.
  
−
              ifTable OBJECT-TYPE
 
−
                      SYNTAX  SEQUENCE OF IfEntry
 
−
                      ACCESS  read-write
 
−
                      STATUS  mandatory
 
−
                      ::= { interfaces 2 }
 
  
−
              ifEntry OBJECT-TYPE
 
−
                      SYNTAX  IfEntry
 
−
                      ACCESS  read-write
 
−
                      STATUS  mandatory
 
−
                      ::= { ifTable 1 }
 
  
−
              IfEntry ::= SEQUENCE {
+
McCloghrie & Rose                                           
−
                  ifIndex
+
 
−
                      INTEGER,
+
RFC 1156                          MIB                          May 1990
−
                  ifDescr
+
 
−
                      OCTET STRING,
+
 
−
                  ifType
+
            OBJECT:
−
                      INTEGER,
+
            -------
−
                  ifMtu
+
                  egpNeighEntry { egpNeighTable 1 }
−
                       INTEGER,
+
 
−
                  ifSpeed
+
            Syntax:
−
                       Gauge,
+
                  EgpNeighEntry ::= SEQUENCE {
−
                  ifPhysAddress
+
                      egpNeighState
−
                       OCTET STRING,
+
                          INTEGER,
−
                  ifAdminStatus
+
                      egpNeighAddr
−
                       INTEGER,
+
                          IpAddress
−
                  ifOperStatus
+
                  }
−
                      INTEGER,
+
 
−
                  ifLastChange
+
            Definition:
−
                      TimeTicks,
+
                  Information about this entity's relationship with a
−
                  ifInOctets
+
                  particular EGP neighbor.
−
                      Counter,
+
 
−
                  ifInUcastPkts
+
            Access:
−
                      Counter,
+
                  read-only.
−
                  ifInNUcastPkts
+
 
−
                      Counter,
+
            Status:
−
                  ifInDiscards
+
                  mandatory.
−
                      Counter,
+
 
−
                  ifInErrors
+
 
−
                      Counter,
+
            We now consider the individual components of each EGP
−
                  ifInUnknownProtos
+
            neighbor entry:
 +
 
 +
 
 +
            OBJECT:
 +
            -------
 +
                  egpNeighState { egpNeighEntry 1 }
 +
 
 +
            Syntax:
 +
                  INTEGER {
 +
                       idle(1),
 +
                       acquisition(2),
 +
                       down(3),
 +
                       up(4),
 +
                      cease(5)
 +
                  }
 +
 
 +
            Definition:
 +
                  The EGP state of the local system with respect to this
 +
                  entry's EGP neighbor.  Each EGP state is represented
 +
                  by a value that is one greater than the numerical
 +
                  value associated with said state in RFC 904.
 +
 
 +
            Access:
 +
                  read-only.
 +
 
 +
 
 +
 
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
            Status:
 +
                  mandatory.
  
  
−
                      Counter,
+
            OBJECT:
−
                  ifOutOctets
+
            -------
−
                      Counter,
+
                  egpNeighAddr { egpNeighEntry 2 }
−
                  ifOutUcastPkts
 
−
                      Counter,
 
−
                  ifOutNUcastPkts
 
−
                      Counter,
 
−
                  ifOutDiscards
 
−
                      Counter,
 
−
                  ifOutErrors
 
−
                      Counter,
 
−
                  ifOutQLen
 
−
                      Gauge
 
−
              }
 
  
−
              ifIndex OBJECT-TYPE
+
            Syntax:
−
                      SYNTAX  INTEGER
+
                  IpAddress
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 1 }
 
  
−
              ifDescr OBJECT-TYPE
+
            Definition:
−
                      SYNTAX  OCTET STRING
+
                  The IP address of this entry's EGP neighbor.
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 2 }
 
  
−
              ifType OBJECT-TYPE
+
            Access:
−
                      SYNTAX  INTEGER {
+
                  read-only.
−
                              other(1),    -- none of the following
 
−
                              regular1822(2),
 
−
                              hdh1822(3),
 
−
                              ddn-x25(4),
 
−
                              rfc877-x25(5),
 
−
                              ethernet-csmacd(6),
 
−
                              iso88023-csmacd(7),
 
−
                              iso88024-tokenBus(8),
 
−
                              iso88025-tokenRing(9),
 
−
                              iso88026-man(10),
 
−
                              starLan(11),
 
−
                              proteon-10MBit(12),
 
−
                              proteon-80MBit(13),
 
−
                              hyperchannel(14),
 
−
                              fddi(15),
 
−
                              lapb(16),
 
−
                              sdlc(17),
 
−
                              t1-carrier(18),
 
−
                              cept(19),
 
  
 +
            Status:
 +
                  mandatory.
  
  
  
  
−
                              basicIsdn(20),
 
−
                              primaryIsdn(21),
 
−
                                                -- proprietary serial
 
−
                              propPointToPointSerial(22)
 
−
                          }
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 3 }
 
  
−
              ifMtu OBJECT-TYPE
 
−
                      SYNTAX  INTEGER
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 4 }
 
  
−
              ifSpeed OBJECT-TYPE
 
−
                      SYNTAX  Gauge
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 5 }
 
  
−
              ifPhysAddress OBJECT-TYPE
 
−
                      SYNTAX  OCTET STRING
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 6 }
 
  
−
              ifAdminStatus OBJECT-TYPE
 
−
                      SYNTAX  INTEGER {
 
−
                              up(1),        -- ready to pass packets
 
−
                              down(2),
 
−
                              testing(3)    -- in some test mode
 
−
                              }
 
−
                      ACCESS  read-write
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 7 }
 
  
−
              ifOperStatus OBJECT-TYPE
 
−
                      SYNTAX  INTEGER {
 
−
                              up(1),        -- ready to pass packets
 
−
                              down(2),
 
−
                              testing(3)    -- in some test mode
 
−
                              }
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 8 }
 
  
−
              ifLastChange OBJECT-TYPE
 
  
  
Line 3,736: Line 3,735:
  
  
−
                      SYNTAX  TimeTicks
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 9 }
 
  
−
              ifInOctets OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 10 }
 
  
−
              ifInUcastPkts OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::=  { ifEntry 11 }
 
  
−
              ifInNUcastPkts OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 12 }
 
  
−
              ifInDiscards OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 13 }
 
  
−
              ifInErrors OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 14 }
 
  
−
              ifInUnknownProtos OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 15 }
 
  
−
              ifOutOctets OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 16 }
 
  
−
              ifOutUcastPkts OBJECT-TYPE
 
  
  
Line 3,789: Line 3,748:
  
  
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 17 }
 
  
−
              ifOutNUcastPkts OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 18 }
 
  
−
              ifOutDiscards OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 19 }
 
  
−
              ifOutErrors OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 20 }
 
  
−
              ifOutQLen OBJECT-TYPE
+
McCloghrie & Rose                                           
−
                      SYNTAX  Gauge
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ifEntry 21 }
 
  
−
              -- the Address Translation group
+
RFC 1156                          MIB                          May 1990
  
−
              atTable OBJECT-TYPE
 
−
                      SYNTAX  SEQUENCE OF AtEntry
 
−
                      ACCESS  read-write
 
−
                      STATUS  mandatory
 
−
                      ::= { at 1 }
 
  
−
              atEntry OBJECT-TYPE
+
6. Definitions
−
                      SYNTAX AtEntry
 
−
                      ACCESS  read-write
 
−
                      STATUS  mandatory
 
−
                      ::= { atTable 1 }
 
  
−
              AtEntry ::= SEQUENCE {
+
                RFC1156-MIB
−
                  atIfIndex
 
−
                      INTEGER,
 
−
                  atPhysAddress
 
−
                      OCTET STRING,
 
  
 +
                DEFINITIONS ::= BEGIN
  
 +
                IMPORTS
 +
                        mgmt, OBJECT-TYPE, NetworkAddress, IpAddress,
 +
                        Counter, Gauge, TimeTicks
 +
                            FROM RFC1155-SMI;
  
 +
                  mib        OBJECT IDENTIFIER ::= { mgmt 1 }
  
 +
                  system    OBJECT IDENTIFIER ::= { mib 1 }
 +
                  interfaces OBJECT IDENTIFIER ::= { mib 2 }
 +
                  at        OBJECT IDENTIFIER ::= { mib 3 }
 +
                  ip        OBJECT IDENTIFIER ::= { mib 4 }
 +
                  icmp      OBJECT IDENTIFIER ::= { mib 5 }
 +
                  tcp        OBJECT IDENTIFIER ::= { mib 6 }
 +
                  udp        OBJECT IDENTIFIER ::= { mib 7 }
 +
                  egp        OBJECT IDENTIFIER ::= { mib 8 }
  
−
                  atNetAddress
+
                  -- object types
−
                      NetworkAddress
 
−
              }
 
  
−
              atIfIndex OBJECT-TYPE
+
                  -- the System group
−
                      SYNTAX  INTEGER
 
−
                      ACCESS  read-write
 
−
                      STATUS  mandatory
 
−
                      ::= { atEntry 1 }
 
  
−
              atPhysAddress OBJECT-TYPE
+
                  sysDescr OBJECT-TYPE
−
                      SYNTAX  OCTET STRING
+
                          SYNTAX  OCTET STRING
−
                      ACCESS  read-write
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { atEntry 2 }
+
                          ::= { system 1 }
  
−
              atNetAddress OBJECT-TYPE
+
                  sysObjectID OBJECT-TYPE
−
                      SYNTAX  NetworkAddress
+
                          SYNTAX  OBJECT IDENTIFIER
−
                      ACCESS  read-write
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { atEntry 3 }
+
                          ::= { system 2 }
  
−
              -- the IP group
+
                  sysUpTime OBJECT-TYPE
 +
                          SYNTAX  TimeTicks
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { system 3 }
  
−
              ipForwarding OBJECT-TYPE
+
                  -- the Interfaces group
−
                      SYNTAX  INTEGER {
 
−
                    gateway(1), -- entity forwards datagrams
 
−
                    host(2)    -- entity does NOT forward datagrams
 
−
                              }
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ip 1 }
 
  
−
              ipDefaultTTL OBJECT-TYPE
+
                  ifNumber OBJECT-TYPE
−
                      SYNTAX  INTEGER
+
                          SYNTAX  INTEGER
−
                      ACCESS  read-write
 
−
                      STATUS  mandatory
 
−
                      ::= { ip 2 }
 
  
−
              ipInReceives OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ip 3 }
 
  
−
              ipInHdrErrors OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { interfaces 1 }
  
−
                      STATUS  mandatory
+
                  -- the Interfaces table
−
                      ::= { ip 4 }
 
  
−
              ipInAddrErrors OBJECT-TYPE
+
                  ifTable OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  SEQUENCE OF IfEntry
−
                      ACCESS  read-only
+
                          ACCESS  read-write
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { ip 5 }
+
                          ::= { interfaces 2 }
  
−
              ipForwDatagrams OBJECT-TYPE
+
                  ifEntry OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  IfEntry
−
                      ACCESS  read-only
+
                          ACCESS  read-write
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { ip 6 }
+
                          ::= { ifTable 1 }
  
−
              ipInUnknownProtos OBJECT-TYPE
+
                  IfEntry ::= SEQUENCE {
−
                      SYNTAX  Counter
+
                      ifIndex
−
                      ACCESS  read-only
+
                          INTEGER,
−
                      STATUS  mandatory
+
                      ifDescr
−
                      ::= { ip 7 }
+
                          OCTET STRING,
 +
                      ifType
 +
                          INTEGER,
 +
                      ifMtu
 +
                          INTEGER,
 +
                      ifSpeed
 +
                          Gauge,
 +
                      ifPhysAddress
 +
                          OCTET STRING,
 +
                      ifAdminStatus
 +
                          INTEGER,
 +
                      ifOperStatus
 +
                          INTEGER,
 +
                      ifLastChange
 +
                          TimeTicks,
 +
                      ifInOctets
 +
                          Counter,
 +
                      ifInUcastPkts
 +
                          Counter,
 +
                      ifInNUcastPkts
 +
                          Counter,
 +
                      ifInDiscards
 +
                          Counter,
 +
                      ifInErrors
 +
                          Counter,
 +
                      ifInUnknownProtos
  
−
              ipInDiscards OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ip 8 }
 
  
−
              ipInDelivers OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ip 9 }
 
  
−
              ipOutRequests OBJECT-TYPE
+
McCloghrie & Rose                                           
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ip 10 }
 
  
−
              ipOutDiscards OBJECT-TYPE
+
RFC 1156                          MIB                          May 1990
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ip 11 }
 
  
−
              ipOutNoRoutes OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
  
 +
                          Counter,
 +
                      ifOutOctets
 +
                          Counter,
 +
                      ifOutUcastPkts
 +
                          Counter,
 +
                      ifOutNUcastPkts
 +
                          Counter,
 +
                      ifOutDiscards
 +
                          Counter,
 +
                      ifOutErrors
 +
                          Counter,
 +
                      ifOutQLen
 +
                          Gauge
 +
                  }
  
 +
                  ifIndex OBJECT-TYPE
 +
                          SYNTAX  INTEGER
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ifEntry 1 }
  
 +
                  ifDescr OBJECT-TYPE
 +
                          SYNTAX  OCTET STRING
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ifEntry 2 }
  
 +
                  ifType OBJECT-TYPE
 +
                          SYNTAX  INTEGER {
 +
                                  other(1),    -- none of the following
 +
                                  regular1822(2),
 +
                                  hdh1822(3),
 +
                                  ddn-x25(4),
 +
                                  rfc877-x25(5),
 +
                                  ethernet-csmacd(6),
 +
                                  iso88023-csmacd(7),
 +
                                  iso88024-tokenBus(8),
 +
                                  iso88025-tokenRing(9),
 +
                                  iso88026-man(10),
 +
                                  starLan(11),
 +
                                  proteon-10MBit(12),
 +
                                  proteon-80MBit(13),
 +
                                  hyperchannel(14),
 +
                                  fddi(15),
 +
                                  lapb(16),
 +
                                  sdlc(17),
 +
                                  t1-carrier(18),
 +
                                  cept(19),
  
−
                      STATUS  mandatory
 
−
                      ::= { ip 12 }
 
  
−
              ipReasmTimeout OBJECT-TYPE
 
−
                      SYNTAX  INTEGER
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ip 13 }
 
  
−
              ipReasmReqds OBJECT-TYPE
+
McCloghrie & Rose                                           
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ip 14 }
 
  
−
              ipReasmOKs OBJECT-TYPE
+
RFC 1156                          MIB                          May 1990
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ip 15 }
 
  
−
              ipReasmFails OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ip 16 }
 
  
−
              ipFragOKs OBJECT-TYPE
+
                                  basicIsdn(20),
−
                      SYNTAX  Counter
+
                                  primaryIsdn(21),
−
                      ACCESS  read-only
+
                                                  -- proprietary serial
−
                      STATUS  mandatory
+
                                  propPointToPointSerial(22)
−
                      ::= { ip 17 }
+
                              }
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ifEntry 3 }
  
−
              ipFragFails OBJECT-TYPE
+
                  ifMtu OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  INTEGER
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { ip 18 }
+
                          ::= { ifEntry 4 }
  
−
              ipFragCreates OBJECT-TYPE
+
                  ifSpeed OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  Gauge
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { ip 19 }
+
                          ::= { ifEntry 5 }
  
−
              -- the IP Interface table
+
                  ifPhysAddress OBJECT-TYPE
 +
                          SYNTAX  OCTET STRING
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ifEntry 6 }
  
−
              ipAddrTable OBJECT-TYPE
+
                  ifAdminStatus OBJECT-TYPE
 +
                          SYNTAX  INTEGER {
 +
                                  up(1),        -- ready to pass packets
 +
                                  down(2),
 +
                                  testing(3)    -- in some test mode
 +
                                  }
 +
                          ACCESS  read-write
 +
                          STATUS  mandatory
 +
                          ::= { ifEntry 7 }
  
 +
                  ifOperStatus OBJECT-TYPE
 +
                          SYNTAX  INTEGER {
 +
                                  up(1),        -- ready to pass packets
 +
                                  down(2),
 +
                                  testing(3)    -- in some test mode
 +
                                  }
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ifEntry 8 }
  
 +
                  ifLastChange OBJECT-TYPE
  
  
  
−
                      SYNTAX  SEQUENCE OF IpAddrEntry
+
McCloghrie & Rose                                           
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ip 20 }
 
  
−
              ipAddrEntry OBJECT-TYPE
+
RFC 1156                          MIB                          May 1990
−
                      SYNTAX  IpAddrEntry
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ipAddrTable 1 }
 
  
−
              IpAddrEntry ::= SEQUENCE {
 
−
                  ipAdEntAddr
 
−
                      IpAddress,
 
−
                  ipAdEntIfIndex
 
−
                      INTEGER,
 
−
                  ipAdEntNetMask
 
−
                      IpAddress,
 
−
                  ipAdEntBcastAddr
 
−
                      INTEGER
 
−
              }
 
  
−
              ipAdEntAddr OBJECT-TYPE
+
                          SYNTAX  TimeTicks
−
                      SYNTAX  IpAddress
+
                          ACCESS  read-only
−
                      ACCESS  read-only
+
                          STATUS  mandatory
−
                      STATUS  mandatory
+
                          ::= { ifEntry 9 }
−
                      ::= { ipAddrEntry 1 }
 
  
−
              ipAdEntIfIndex OBJECT-TYPE
+
                  ifInOctets OBJECT-TYPE
−
                      SYNTAX  INTEGER
+
                          SYNTAX  Counter
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { ipAddrEntry 2 }
+
                          ::= { ifEntry 10 }
  
−
              ipAdEntNetMask OBJECT-TYPE
+
                  ifInUcastPkts OBJECT-TYPE
−
                      SYNTAX  IpAddress
+
                          SYNTAX  Counter
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::=  { ipAddrEntry 3 }
+
                          ::=  { ifEntry 11 }
  
−
              ipAdEntBcastAddr OBJECT-TYPE
+
                  ifInNUcastPkts OBJECT-TYPE
−
                      SYNTAX  INTEGER
+
                          SYNTAX  Counter
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { ipAddrEntry 4 }
+
                          ::= { ifEntry 12 }
  
 +
                  ifInDiscards OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ifEntry 13 }
  
 +
                  ifInErrors OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ifEntry 14 }
  
 +
                  ifInUnknownProtos OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ifEntry 15 }
  
 +
                  ifOutOctets OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ifEntry 16 }
  
 +
                  ifOutUcastPkts OBJECT-TYPE
  
  
  
−
              -- the IP Routing table
+
McCloghrie & Rose                                           
  
−
              ipRoutingTable OBJECT-TYPE
+
RFC 1156                          MIB                          May 1990
−
                      SYNTAX  SEQUENCE OF IpRouteEntry
 
−
                      ACCESS  read-write
 
−
                      STATUS  mandatory
 
−
                      ::= { ip 21 }
 
  
−
              ipRouteEntry OBJECT-TYPE
 
−
                      SYNTAX  IpRouteEntry
 
−
                      ACCESS  read-write
 
−
                      STATUS  mandatory
 
−
                      ::= { ipRoutingTable 1 }
 
  
−
              IpRouteEntry ::= SEQUENCE {
+
                          SYNTAX  Counter
−
                  ipRouteDest
+
                          ACCESS  read-only
−
                      IpAddress,
+
                          STATUS  mandatory
−
                  ipRouteIfIndex
+
                          ::= { ifEntry 17 }
−
                      INTEGER,
 
−
                  ipRouteMetric1
 
−
                      INTEGER,
 
−
                  ipRouteMetric2
 
−
                      INTEGER,
 
−
                  ipRouteMetric3
 
−
                      INTEGER,
 
−
                  ipRouteMetric4
 
−
                      INTEGER,
 
−
                  ipRouteNextHop
 
−
                      IpAddress,
 
−
                  ipRouteType
 
−
                      INTEGER,
 
−
                  ipRouteProto
 
−
                      INTEGER,
 
−
                  ipRouteAge
 
−
                      INTEGER
 
−
              }
 
  
−
              ipRouteDest OBJECT-TYPE
+
                  ifOutNUcastPkts OBJECT-TYPE
−
                      SYNTAX  IpAddress
+
                          SYNTAX  Counter
−
                      ACCESS  read-write
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { ipRouteEntry 1 }
+
                          ::= { ifEntry 18 }
  
−
              ipRouteIfIndex  OBJECT-TYPE
+
                  ifOutDiscards OBJECT-TYPE
−
                      SYNTAX  INTEGER
+
                          SYNTAX  Counter
−
                      ACCESS  read-write
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { ipRouteEntry 2 }
+
                          ::= { ifEntry 19 }
  
 +
                  ifOutErrors OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ifEntry 20 }
  
 +
                  ifOutQLen OBJECT-TYPE
 +
                          SYNTAX  Gauge
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ifEntry 21 }
  
 +
                  -- the Address Translation group
  
 +
                  atTable OBJECT-TYPE
 +
                          SYNTAX  SEQUENCE OF AtEntry
 +
                          ACCESS  read-write
 +
                          STATUS  mandatory
 +
                          ::= { at 1 }
  
−
              ipRouteMetric1 OBJECT-TYPE
+
                  atEntry OBJECT-TYPE
−
                      SYNTAX  INTEGER
+
                          SYNTAX  AtEntry
−
                      ACCESS  read-write
+
                          ACCESS  read-write
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { ipRouteEntry 3 }
+
                          ::= { atTable 1 }
  
−
              ipRouteMetric2 OBJECT-TYPE
+
                  AtEntry ::= SEQUENCE {
−
                      SYNTAX  INTEGER
+
                      atIfIndex
−
                      ACCESS  read-write
+
                          INTEGER,
−
                      STATUS  mandatory
+
                      atPhysAddress
−
                      ::= { ipRouteEntry 4 }
+
                          OCTET STRING,
  
−
              ipRouteMetric3 OBJECT-TYPE
 
−
                      SYNTAX  INTEGER
 
−
                      ACCESS  read-write
 
−
                      STATUS  mandatory
 
−
                      ::= { ipRouteEntry 5 }
 
  
−
              ipRouteMetric4 OBJECT-TYPE
 
−
                      SYNTAX  INTEGER
 
−
                      ACCESS  read-write
 
−
                      STATUS  mandatory
 
−
                      ::= { ipRouteEntry 6 }
 
  
−
              ipRouteNextHop OBJECT-TYPE
+
McCloghrie & Rose                                           
−
                      SYNTAX  IpAddress
 
−
                      ACCESS  read-write
 
−
                      STATUS  mandatory
 
−
                      ::= { ipRouteEntry 7 }
 
  
−
              ipRouteType OBJECT-TYPE
+
RFC 1156                         MIB                          May 1990
−
                      SYNTAX  INTEGER {
 
−
                         other(1),      -- none of the following
 
  
−
                        invalid(2),    -- an invalidated route
 
  
−
                                        -- route to directly
+
                      atNetAddress
−
                        direct(3),    -- connected (sub-)network
+
                          NetworkAddress
 +
                  }
  
−
                                        -- route to a non-local
+
                  atIfIndex OBJECT-TYPE
−
                        remote(4),    -- host/network/sub-network
+
                          SYNTAX  INTEGER
−
                          }
+
                          ACCESS  read-write
−
                      ACCESS  read-write
+
                          STATUS  mandatory
−
                      STATUS  mandatory
+
                          ::= { atEntry 1 }
−
                      ::= { ipRouteEntry 8 }
 
  
−
              ipRouteProto OBJECT-TYPE
+
                  atPhysAddress OBJECT-TYPE
−
                      SYNTAX  INTEGER {
+
                          SYNTAX  OCTET STRING
 +
                          ACCESS  read-write
 +
                          STATUS  mandatory
 +
                          ::= { atEntry 2 }
  
 +
                  atNetAddress OBJECT-TYPE
 +
                          SYNTAX  NetworkAddress
 +
                          ACCESS  read-write
 +
                          STATUS  mandatory
 +
                          ::= { atEntry 3 }
  
 +
                  -- the IP group
  
 +
                  ipForwarding OBJECT-TYPE
 +
                          SYNTAX  INTEGER {
 +
                        gateway(1), -- entity forwards datagrams
 +
                        host(2)    -- entity does NOT forward datagrams
 +
                                  }
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ip 1 }
  
 +
                  ipDefaultTTL OBJECT-TYPE
 +
                          SYNTAX  INTEGER
 +
                          ACCESS  read-write
 +
                          STATUS  mandatory
 +
                          ::= { ip 2 }
  
−
                        other(1),    -- none of the following
+
                  ipInReceives OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ip 3 }
  
−
                                      -- non-protocol information
+
                  ipInHdrErrors OBJECT-TYPE
−
                                      --  e.g., manually
+
                          SYNTAX  Counter
−
                        local(2),    --   configured entries
+
                          ACCESS  read-only
  
−
                                      -- set via a network
 
−
                        netmgmt(3),  --  management protocol
 
  
−
                                      -- obtained via ICMP,
 
−
                        icmp(4),      --  e.g., Redirect
 
  
−
                                      -- the following are
+
McCloghrie & Rose                                           
−
                                      -- gateway routing protocols
 
−
                        egp(5),
 
−
                        ggp(6),
 
−
                        hello(7),
 
−
                        rip(8),
 
−
                        is-is(9),
 
−
                        es-is(10),
 
−
                        ciscoIgrp(11),
 
−
                        bbnSpfIgp(12),
 
−
                        oigp(13)
 
−
                          }
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { ipRouteEntry 9 }
 
  
−
              ipRouteAge OBJECT-TYPE
+
RFC 1156                          MIB                          May 1990
−
                      SYNTAX  INTEGER
 
−
                      ACCESS  read-write
 
−
                      STATUS  mandatory
 
−
                      ::= { ipRouteEntry 10 }
 
  
−
              -- the ICMP group
 
  
−
              icmpInMsgs OBJECT-TYPE
+
                          STATUS  mandatory
−
                      SYNTAX  Counter
+
                          ::= { ip 4 }
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 1 }
 
  
−
              icmpInErrors OBJECT-TYPE
+
                  ipInAddrErrors OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  Counter
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { icmp 2 }
+
                          ::= { ip 5 }
  
 +
                  ipForwDatagrams OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ip 6 }
  
 +
                  ipInUnknownProtos OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ip 7 }
  
 +
                  ipInDiscards OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ip 8 }
  
 +
                  ipInDelivers OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ip 9 }
  
 +
                  ipOutRequests OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ip 10 }
  
−
              icmpInDestUnreachs OBJECT-TYPE
+
                  ipOutDiscards OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  Counter
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { icmp 3 }
+
                          ::= { ip 11 }
  
−
              icmpInTimeExcds OBJECT-TYPE
+
                  ipOutNoRoutes OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  Counter
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
 
−
                      ::= { icmp 4 }
 
  
−
              icmpInParmProbs OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 5 }
 
  
−
              icmpInSrcQuenchs OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 6 }
 
  
−
              icmpInRedirects OBJECT-TYPE
+
McCloghrie & Rose                                           
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 7 }
 
  
−
              icmpInEchos OBJECT-TYPE
+
RFC 1156                          MIB                          May 1990
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 8 }
 
  
−
              icmpInEchoReps OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 9 }
 
  
−
              icmpInTimestamps OBJECT-TYPE
+
                          STATUS  mandatory
−
                      SYNTAX  Counter
+
                          ::= { ip 12 }
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 10 }
 
  
 +
                  ipReasmTimeout OBJECT-TYPE
 +
                          SYNTAX  INTEGER
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ip 13 }
  
 +
                  ipReasmReqds OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ip 14 }
  
 +
                  ipReasmOKs OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ip 15 }
  
 +
                  ipReasmFails OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ip 16 }
  
 +
                  ipFragOKs OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ip 17 }
  
−
              icmpInTimestampReps OBJECT-TYPE
+
                  ipFragFails OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  Counter
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { icmp 11 }
+
                          ::= { ip 18 }
  
−
              icmpInAddrMasks OBJECT-TYPE
+
                  ipFragCreates OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  Counter
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { icmp 12 }
+
                          ::= { ip 19 }
  
−
              icmpInAddrMaskReps OBJECT-TYPE
+
                  -- the IP Interface table
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 13 }
 
  
−
              icmpOutMsgs OBJECT-TYPE
+
                  ipAddrTable OBJECT-TYPE
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 14 }
 
  
−
              icmpOutErrors OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 15 }
 
  
−
              icmpOutDestUnreachs OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 16 }
 
  
−
              icmpOutTimeExcds OBJECT-TYPE
+
McCloghrie & Rose                                           
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 17 }
 
  
−
              icmpOutParmProbs OBJECT-TYPE
+
RFC 1156                          MIB                          May 1990
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 18 }
 
  
  
 +
                          SYNTAX  SEQUENCE OF IpAddrEntry
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ip 20 }
  
 +
                  ipAddrEntry OBJECT-TYPE
 +
                          SYNTAX  IpAddrEntry
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ipAddrTable 1 }
  
 +
                  IpAddrEntry ::= SEQUENCE {
 +
                      ipAdEntAddr
 +
                          IpAddress,
 +
                      ipAdEntIfIndex
 +
                          INTEGER,
 +
                      ipAdEntNetMask
 +
                          IpAddress,
 +
                      ipAdEntBcastAddr
 +
                          INTEGER
 +
                  }
  
 +
                  ipAdEntAddr OBJECT-TYPE
 +
                          SYNTAX  IpAddress
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::=  { ipAddrEntry 1 }
  
−
              icmpOutSrcQuenchs OBJECT-TYPE
+
                  ipAdEntIfIndex OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  INTEGER
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { icmp 19 }
+
                          ::= { ipAddrEntry 2 }
  
−
              icmpOutRedirects OBJECT-TYPE
+
                  ipAdEntNetMask OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  IpAddress
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { icmp 20 }
+
                          ::= { ipAddrEntry 3 }
  
−
              icmpOutEchos OBJECT-TYPE
+
                  ipAdEntBcastAddr OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  INTEGER
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { icmp 21 }
+
                          ::= { ipAddrEntry 4 }
  
−
              icmpOutEchoReps OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 22 }
 
  
−
              icmpOutTimestamps OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 23 }
 
  
−
              icmpOutTimestampReps OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 24 }
 
  
−
              icmpOutAddrMasks OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 25 }
 
  
−
              icmpOutAddrMaskReps OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { icmp 26 }
 
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
                  -- the IP Routing table
  
 +
                  ipRoutingTable OBJECT-TYPE
 +
                          SYNTAX  SEQUENCE OF IpRouteEntry
 +
                          ACCESS  read-write
 +
                          STATUS  mandatory
 +
                          ::= { ip 21 }
  
−
              -- the TCP group
+
                  ipRouteEntry OBJECT-TYPE
 +
                          SYNTAX  IpRouteEntry
 +
                          ACCESS  read-write
 +
                          STATUS  mandatory
 +
                          ::= { ipRoutingTable 1 }
  
−
              tcpRtoAlgorithm OBJECT-TYPE
+
                  IpRouteEntry ::= SEQUENCE {
−
                      SYNTAX  INTEGER {
+
                      ipRouteDest
−
                      other(1),   -- none of the following
+
                          IpAddress,
−
                      constant(2), -- a constant rto
+
                      ipRouteIfIndex
−
                      rsre(3),     -- MIL-STD-1778, Appendix B
+
                          INTEGER,
−
                      vanj(4)      -- Van Jacobson's algorithm [15]
+
                      ipRouteMetric1
−
                              }
+
                          INTEGER,
−
                      ACCESS  read-only
+
                      ipRouteMetric2
−
                      STATUS  mandatory
+
                          INTEGER,
−
                      ::= { tcp 1 }
+
                      ipRouteMetric3
 +
                          INTEGER,
 +
                      ipRouteMetric4
 +
                          INTEGER,
 +
                      ipRouteNextHop
 +
                          IpAddress,
 +
                      ipRouteType
 +
                          INTEGER,
 +
                      ipRouteProto
 +
                          INTEGER,
 +
                      ipRouteAge
 +
                          INTEGER
 +
                  }
  
−
              tcpRtoMin OBJECT-TYPE
+
                  ipRouteDest OBJECT-TYPE
−
                      SYNTAX  INTEGER
+
                          SYNTAX  IpAddress
−
                      ACCESS  read-only
+
                          ACCESS  read-write
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { tcp 2 }
+
                          ::= { ipRouteEntry 1 }
  
−
              tcpRtoMax OBJECT-TYPE
+
                  ipRouteIfIndex  OBJECT-TYPE
−
                      SYNTAX  INTEGER
+
                          SYNTAX  INTEGER
−
                      ACCESS  read-only
+
                          ACCESS  read-write
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { tcp 3 }
+
                          ::= { ipRouteEntry 2 }
  
−
              tcpMaxConn OBJECT-TYPE
 
−
                      SYNTAX  INTEGER
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { tcp 4 }
 
  
−
              tcpActiveOpens OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { tcp 5 }
 
  
−
              tcpPassiveOpens OBJECT-TYPE
+
McCloghrie & Rose                                           
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { tcp 6 }
 
  
−
              tcpAttemptFails OBJECT-TYPE
+
RFC 1156                          MIB                          May 1990
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { tcp 7 }
 
  
  
 +
                  ipRouteMetric1 OBJECT-TYPE
 +
                          SYNTAX  INTEGER
 +
                          ACCESS  read-write
 +
                          STATUS  mandatory
 +
                          ::= { ipRouteEntry 3 }
  
 +
                  ipRouteMetric2 OBJECT-TYPE
 +
                          SYNTAX  INTEGER
 +
                          ACCESS  read-write
 +
                          STATUS  mandatory
 +
                          ::= { ipRouteEntry 4 }
  
 +
                  ipRouteMetric3 OBJECT-TYPE
 +
                          SYNTAX  INTEGER
 +
                          ACCESS  read-write
 +
                          STATUS  mandatory
 +
                          ::= { ipRouteEntry 5 }
  
−
              tcpEstabResets OBJECT-TYPE
+
                  ipRouteMetric4 OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  INTEGER
−
                      ACCESS  read-only
+
                          ACCESS  read-write
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { tcp 8 }
+
                          ::= { ipRouteEntry 6 }
  
−
              tcpCurrEstab OBJECT-TYPE
+
                  ipRouteNextHop OBJECT-TYPE
−
                      SYNTAX  Gauge
+
                          SYNTAX  IpAddress
−
                      ACCESS  read-only
+
                          ACCESS  read-write
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { tcp 9 }
+
                          ::= { ipRouteEntry 7 }
  
−
              tcpInSegs OBJECT-TYPE
+
                  ipRouteType OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  INTEGER {
−
                      ACCESS  read-only
+
                            other(1),      -- none of the following
−
                      STATUS  mandatory
 
−
                      ::= { tcp 10 }
 
  
−
              tcpOutSegs OBJECT-TYPE
+
                            invalid(2),    -- an invalidated route
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { tcp 11 }
 
  
−
              tcpRetransSegs OBJECT-TYPE
+
                                          -- route to directly
−
                      SYNTAX  Counter
+
                            direct(3),    -- connected (sub-)network
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { tcp 12 }
 
  
−
              -- the TCP connections table
+
                                          -- route to a non-local
 +
                            remote(4),    -- host/network/sub-network
 +
                              }
 +
                          ACCESS  read-write
 +
                          STATUS  mandatory
 +
                          ::= { ipRouteEntry 8 }
  
−
              tcpConnTable OBJECT-TYPE
+
                  ipRouteProto OBJECT-TYPE
−
                      SYNTAX  SEQUENCE OF TcpConnEntry
+
                          SYNTAX  INTEGER {
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { tcp 13 }
 
  
−
              tcpConnEntry OBJECT-TYPE
 
−
                      SYNTAX  TcpConnEntry
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { tcpConnTable 1 }
 
  
−
              TcpConnEntry ::= SEQUENCE {
 
−
                  tcpConnState
 
−
                      INTEGER,
 
−
                  tcpConnLocalAddress
 
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
                            other(1),    -- none of the following
  
−
                      IpAddress,
+
                                          -- non-protocol information
−
                  tcpConnLocalPort
+
                                          --  e.g., manually
−
                      INTEGER (0..65535),
+
                            local(2),    --  configured entries
−
                  tcpConnRemAddress
 
−
                      IpAddress,
 
−
                  tcpConnRemPort
 
−
                      INTEGER (0..65535)
 
−
              }
 
  
−
              tcpConnState OBJECT-TYPE
+
                                          -- set via a network
−
                      SYNTAX  INTEGER {
+
                            netmgmt(3),   --   management protocol
−
                                  closed(1),
 
−
                                  listen(2),
 
−
                                  synSent(3),
 
−
                                  synReceived(4),
 
−
                                  established(5),
 
−
                                  finWait1(6),
 
−
                                  finWait2(7),
 
−
                                  closeWait(8),
 
−
                                  lastAck(9),
 
−
                                  closing(10),
 
−
                                  timeWait(11)
 
−
                              }
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { tcpConnEntry 1 }
 
  
−
              tcpConnLocalAddress OBJECT-TYPE
+
                                          -- obtained via ICMP,
−
                      SYNTAX  IpAddress
+
                            icmp(4),      --   e.g., Redirect
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { tcpConnEntry 2 }
 
  
−
              tcpConnLocalPort OBJECT-TYPE
+
                                          -- the following are
−
                      SYNTAX  INTEGER (0..65535)
+
                                          -- gateway routing protocols
−
                      ACCESS  read-only
+
                            egp(5),
−
                      STATUS  mandatory
+
                            ggp(6),
−
                      ::= { tcpConnEntry 3 }
+
                            hello(7),
 +
                            rip(8),
 +
                            is-is(9),
 +
                            es-is(10),
 +
                            ciscoIgrp(11),
 +
                            bbnSpfIgp(12),
 +
                            oigp(13)
 +
                              }
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { ipRouteEntry 9 }
  
−
              tcpConnRemAddress OBJECT-TYPE
+
                  ipRouteAge OBJECT-TYPE
−
                      SYNTAX  IpAddress
+
                          SYNTAX  INTEGER
−
                      ACCESS  read-only
+
                          ACCESS  read-write
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { tcpConnEntry 4 }
+
                          ::= { ipRouteEntry 10 }
  
−
              tcpConnRemPort OBJECT-TYPE
+
                  -- the ICMP group
−
                      SYNTAX  INTEGER (0..65535)
 
−
                      ACCESS  read-only
 
  
 +
                  icmpInMsgs OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 1 }
  
 +
                  icmpInErrors OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 2 }
  
  
  
−
                      STATUS  mandatory
 
−
                      ::= { tcpConnEntry 5 }
 
  
−
              -- the UDP group
+
McCloghrie & Rose                                           
  
−
              udpInDatagrams OBJECT-TYPE
+
RFC 1156                          MIB                          May 1990
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { udp 1 }
 
  
−
              udpNoPorts OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { udp 2 }
 
  
−
              udpInErrors OBJECT-TYPE
+
                  icmpInDestUnreachs OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  Counter
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { udp 3 }
+
                          ::= { icmp 3 }
  
−
              udpOutDatagrams OBJECT-TYPE
+
                  icmpInTimeExcds OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  Counter
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { udp 4 }
+
                          ::= { icmp 4 }
  
−
              -- the EGP group
+
                  icmpInParmProbs OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 5 }
  
−
              egpInMsgs OBJECT-TYPE
+
                  icmpInSrcQuenchs OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  Counter
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { egp 1 }
+
                          ::= { icmp 6 }
  
−
              egpInErrors OBJECT-TYPE
+
                  icmpInRedirects OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  Counter
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { egp 2 }
+
                          ::= { icmp 7 }
  
−
              egpOutMsgs OBJECT-TYPE
+
                  icmpInEchos OBJECT-TYPE
−
                      SYNTAX  Counter
+
                          SYNTAX  Counter
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { egp 3 }
+
                          ::= { icmp 8 }
  
 +
                  icmpInEchoReps OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 9 }
  
 +
                  icmpInTimestamps OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 10 }
  
  
  
−
              egpOutErrors OBJECT-TYPE
 
−
                      SYNTAX  Counter
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { egp 4 }
 
  
−
              -- the EGP Neighbor table
+
McCloghrie & Rose                                           
  
−
              egpNeighTable OBJECT-TYPE
+
RFC 1156                          MIB                          May 1990
−
                      SYNTAX  SEQUENCE OF EgpNeighEntry
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { egp 5 }
 
  
−
              egpNeighEntry OBJECT-TYPE
 
−
                      SYNTAX  EgpNeighEntry
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { egpNeighTable 1 }
 
  
−
              EgpNeighEntry ::= SEQUENCE {
+
                  icmpInTimestampReps OBJECT-TYPE
−
                  egpNeighState
+
                          SYNTAX  Counter
−
                      INTEGER,
+
                          ACCESS  read-only
−
                  egpNeighAddr
+
                          STATUS  mandatory
−
                      IpAddress
+
                          ::= { icmp 11 }
−
              }
 
  
−
              egpNeighState OBJECT-TYPE
+
                  icmpInAddrMasks OBJECT-TYPE
−
                      SYNTAX  INTEGER {
+
                          SYNTAX  Counter
−
                                  idle(1),
+
                          ACCESS  read-only
−
                                  acquisition(2),
+
                          STATUS  mandatory
−
                                  down(3),
+
                          ::= { icmp 12 }
−
                                  up(4),
 
−
                                  cease(5)
 
−
                              }
 
−
                      ACCESS  read-only
 
−
                      STATUS  mandatory
 
−
                      ::= { egpNeighEntry 1 }
 
  
−
              egpNeighAddr OBJECT-TYPE
+
                  icmpInAddrMaskReps OBJECT-TYPE
−
                      SYNTAX  IpAddress
+
                          SYNTAX  Counter
−
                      ACCESS  read-only
+
                          ACCESS  read-only
−
                      STATUS  mandatory
+
                          STATUS  mandatory
−
                      ::= { egpNeighEntry 2 }
+
                          ::= { icmp 13 }
  
−
              END
+
                  icmpOutMsgs OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 14 }
  
 +
                  icmpOutErrors OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 15 }
  
 +
                  icmpOutDestUnreachs OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 16 }
  
 +
                  icmpOutTimeExcds OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 17 }
  
 +
                  icmpOutParmProbs OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 18 }
  
  
  
−
== Acknowledgements ==
 
  
−
The initial draft of this memo was heavily influenced by the the HEMS
+
McCloghrie & Rose                                           
−
[9] and SNMP [10] MIBs.
 
  
−
Its final form is the result of the suggestions, the dicussions, and
+
RFC 1156                          MIB                           May 1990
−
the compromises reached by the members of the IETF MIB working group:
 
  
−
      Karl Auerbach, Epilogue Technology
 
−
      K. Ramesh Babu, Excelan
 
−
      Lawrence Besaw, Hewlett-Packard
 
−
      Jeffrey D. Case, University of Tennessee at Knoxville
 
−
      James R. Davin, Proteon
 
−
      Mark S. Fedor, NYSERNet
 
−
      Robb Foster, BBN
 
−
      Phill Gross, The MITRE Corporation
 
−
      Bent Torp Jensen, Convergent Technology
 
−
      Lee Labarre, The MITRE Corporation
 
−
      Dan Lynch, Advanced Computing Environments
 
−
      Keith McCloghrie, The Wollongong Group
 
−
      Dave Mackie, 3Com/Bridge
 
−
      Craig Partridge, BBN (chair)
 
−
      Jim Robertson, 3Com/Bridge
 
−
      Marshall T. Rose, The Wollongong Group
 
−
      Greg Satz, cisco
 
−
      Martin Lee Schoffstall, Rensselaer Polytechnic Institute
 
−
      Lou Steinberg, IBM
 
−
      Dean Throop, Data General
 
−
      Unni Warrier, Unisys
 
  
 +
                  icmpOutSrcQuenchs OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 19 }
  
 +
                  icmpOutRedirects OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 20 }
  
 +
                  icmpOutEchos OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 21 }
  
 +
                  icmpOutEchoReps OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 22 }
  
 +
                  icmpOutTimestamps OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 23 }
  
 +
                  icmpOutTimestampReps OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 24 }
  
 +
                  icmpOutAddrMasks OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 25 }
  
 +
                  icmpOutAddrMaskReps OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { icmp 26 }
  
  
  
  
 +
McCloghrie & Rose                                           
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
                  -- the TCP group
  
 +
                  tcpRtoAlgorithm OBJECT-TYPE
 +
                          SYNTAX  INTEGER {
 +
                          other(1),    -- none of the following
 +
                          constant(2), -- a constant rto
 +
                          rsre(3),    -- MIL-STD-1778, Appendix B
 +
                          vanj(4)      -- Van Jacobson's algorithm [15]
 +
                                  }
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcp 1 }
  
 +
                  tcpRtoMin OBJECT-TYPE
 +
                          SYNTAX  INTEGER
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcp 2 }
  
 +
                  tcpRtoMax OBJECT-TYPE
 +
                          SYNTAX  INTEGER
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcp 3 }
  
 +
                  tcpMaxConn OBJECT-TYPE
 +
                          SYNTAX  INTEGER
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcp 4 }
  
 +
                  tcpActiveOpens OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcp 5 }
  
 +
                  tcpPassiveOpens OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcp 6 }
  
 +
                  tcpAttemptFails OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcp 7 }
  
  
−
== References ==
 
  
−
[1]  Cerf, V., "IAB Recommendations for the Development of Internet    Network Management Standards", [[RFC1052|RFC 1052]], IAB, April 1988.
+
McCloghrie & Rose                                            
−
[2]  Information processing systems - Open Systems Interconnection,    "Management Information Services Definition", International    Organization for Standardization, Draft Proposal 9595/2,    December 1987.
 
−
[3]  Information processing systems - Open Systems Interconnection,    "Management Information Protocol Specification", International    Organization for Standardization, Draft Proposal 9596/2,    December 1987.
 
−
[4]  Rose M., and K. McCloghrie, "Structure and Identification of    Management Information for TCP/IP-based internets", [[RFC1065|RFC 1065]],    TWG, August 1988.
 
−
[5]  Partridge C., and G. Trewitt, "The High-Level Entity Management    System (HEMS)", RFCs 1021-1024, BBN and Stanford, October 1987.
 
−
[6]  Cerf, V., "Report of the Second Ad Hoc Network Management Review    Group", [[RFC1109|RFC 1109]], IAB, August 1989.
 
−
[7]  Rose, M., and K. McCloghrie, "Structure and Identification of    Management Information for TCP/IP-based Internets", [[RFC1155|RFC 1155]],    Performance Systems International and Hughes LAN Systems, May    1990.
 
−
[8]  Case, J., M. Fedor, M. Schoffstall, and J. Davin, The Simple    Network Management Protocol", [[RFC1157|RFC 1157]], University of Tennessee    at Knoxville, Performance Systems International, Performance    Systems International, and the MIT Laboratory for Computer    Science, May 1990.
 
−
[9]  Partridge C., and G. Trewitt, "HEMS Variable Definitions", RFC    1024, BBN and Stanford, October 1987.
 
−
  [10]  Case, J., M. Fedor, M. Schoffstall, and J. Davin, "A Simple    Network Management Protocol", [[RFC1067|RFC 1067]], University of Tennessee    At Knoxville, NYSERNet, Rensselaer Polytechnic, Proteon, August    1988.
 
−
  [11]  LaBarre, L., "Structure and Identification of Management    Information for the Internet", Internet Engineering Task Force    working note, Network Information Center, SRI International,    Menlo Park, California, April 1988.
 
  
 +
RFC 1156                          MIB                          May 1990
  
  
 +
                  tcpEstabResets OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcp 8 }
 +
 +
                  tcpCurrEstab OBJECT-TYPE
 +
                          SYNTAX  Gauge
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcp 9 }
 +
 +
                  tcpInSegs OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcp 10 }
 +
 +
                  tcpOutSegs OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcp 11 }
 +
 +
                  tcpRetransSegs OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcp 12 }
 +
 +
                  -- the TCP connections table
 +
 +
                  tcpConnTable OBJECT-TYPE
 +
                          SYNTAX  SEQUENCE OF TcpConnEntry
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcp 13 }
 +
 +
                  tcpConnEntry OBJECT-TYPE
 +
                          SYNTAX  TcpConnEntry
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcpConnTable 1 }
 +
 +
                  TcpConnEntry ::= SEQUENCE {
 +
                      tcpConnState
 +
                          INTEGER,
 +
                      tcpConnLocalAddress
 +
 +
 +
 +
McCloghrie & Rose                                           
 +
 +
RFC 1156                          MIB                          May 1990
 +
 +
 +
                          IpAddress,
 +
                      tcpConnLocalPort
 +
                          INTEGER (0..65535),
 +
                      tcpConnRemAddress
 +
                          IpAddress,
 +
                      tcpConnRemPort
 +
                          INTEGER (0..65535)
 +
                  }
 +
 +
                  tcpConnState OBJECT-TYPE
 +
                          SYNTAX  INTEGER {
 +
                                      closed(1),
 +
                                      listen(2),
 +
                                      synSent(3),
 +
                                      synReceived(4),
 +
                                      established(5),
 +
                                      finWait1(6),
 +
                                      finWait2(7),
 +
                                      closeWait(8),
 +
                                      lastAck(9),
 +
                                      closing(10),
 +
                                      timeWait(11)
 +
                                  }
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcpConnEntry 1 }
 +
 +
                  tcpConnLocalAddress OBJECT-TYPE
 +
                          SYNTAX  IpAddress
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcpConnEntry 2 }
 +
 +
                  tcpConnLocalPort OBJECT-TYPE
 +
                          SYNTAX  INTEGER (0..65535)
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcpConnEntry 3 }
 +
 +
                  tcpConnRemAddress OBJECT-TYPE
 +
                          SYNTAX  IpAddress
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { tcpConnEntry 4 }
 +
 +
                  tcpConnRemPort OBJECT-TYPE
 +
                          SYNTAX  INTEGER (0..65535)
 +
                          ACCESS  read-only
 +
 +
 +
 +
McCloghrie & Rose                                           
 +
 +
RFC 1156                          MIB                          May 1990
 +
 +
 +
                          STATUS  mandatory
 +
                          ::= { tcpConnEntry 5 }
 +
 +
                  -- the UDP group
 +
 +
                  udpInDatagrams OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { udp 1 }
 +
 +
                  udpNoPorts OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { udp 2 }
 +
 +
                  udpInErrors OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { udp 3 }
 +
 +
                  udpOutDatagrams OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { udp 4 }
 +
 +
                  -- the EGP group
 +
 +
                  egpInMsgs OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { egp 1 }
 +
 +
                  egpInErrors OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { egp 2 }
 +
 +
                  egpOutMsgs OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { egp 3 }
 +
 +
 +
 +
McCloghrie & Rose                                           
 +
 +
RFC 1156                          MIB                          May 1990
 +
 +
 +
                  egpOutErrors OBJECT-TYPE
 +
                          SYNTAX  Counter
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { egp 4 }
 +
 +
                  -- the EGP Neighbor table
 +
 +
                  egpNeighTable OBJECT-TYPE
 +
                          SYNTAX  SEQUENCE OF EgpNeighEntry
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { egp 5 }
 +
 +
                  egpNeighEntry OBJECT-TYPE
 +
                          SYNTAX  EgpNeighEntry
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { egpNeighTable 1 }
 +
 +
                  EgpNeighEntry ::= SEQUENCE {
 +
                      egpNeighState
 +
                          INTEGER,
 +
                      egpNeighAddr
 +
                          IpAddress
 +
                  }
 +
 +
                  egpNeighState OBJECT-TYPE
 +
                          SYNTAX  INTEGER {
 +
                                      idle(1),
 +
                                      acquisition(2),
 +
                                      down(3),
 +
                                      up(4),
 +
                                      cease(5)
 +
                                  }
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { egpNeighEntry 1 }
 +
 +
                  egpNeighAddr OBJECT-TYPE
 +
                          SYNTAX  IpAddress
 +
                          ACCESS  read-only
 +
                          STATUS  mandatory
 +
                          ::= { egpNeighEntry 2 }
 +
 +
                  END
 +
 +
 +
 +
 +
 +
McCloghrie & Rose                                           
 +
 +
RFC 1156                          MIB                          May 1990
 +
 +
 +
7.  Acknowledgements
 +
 +
  The initial draft of this memo was heavily influenced by the the HEMS
 +
  [9] and SNMP [10] MIBs.
 +
 +
  Its final form is the result of the suggestions, the dicussions, and
 +
  the compromises reached by the members of the IETF MIB working group:
 +
 +
        Karl Auerbach, Epilogue Technology
 +
        K. Ramesh Babu, Excelan
 +
        Lawrence Besaw, Hewlett-Packard
 +
        Jeffrey D. Case, University of Tennessee at Knoxville
 +
        James R. Davin, Proteon
 +
        Mark S. Fedor, NYSERNet
 +
        Robb Foster, BBN
 +
        Phill Gross, The MITRE Corporation
 +
        Bent Torp Jensen, Convergent Technology
 +
        Lee Labarre, The MITRE Corporation
 +
        Dan Lynch, Advanced Computing Environments
 +
        Keith McCloghrie, The Wollongong Group
 +
        Dave Mackie, 3Com/Bridge
 +
        Craig Partridge, BBN (chair)
 +
        Jim Robertson, 3Com/Bridge
 +
        Marshall T. Rose, The Wollongong Group
 +
        Greg Satz, cisco
 +
        Martin Lee Schoffstall, Rensselaer Polytechnic Institute
 +
        Lou Steinberg, IBM
 +
        Dean Throop, Data General
 +
        Unni Warrier, Unisys
 +
 +
 +
 +
 +
 +
 +
 +
 +
 +
 +
 +
 +
 +
 +
 +
 +
 +
 +
 +
 +
 +
 +
McCloghrie & Rose                                           
 +
 +
RFC 1156                          MIB                          May 1990
 +
 +
 +
8.  References
 +
 +
  [1]  Cerf, V., "IAB Recommendations for the Development of Internet
 +
        Network Management Standards", RFC 1052, IAB, April 1988.
 +
 +
  [2]  Information processing systems - Open Systems Interconnection,
 +
        "Management Information Services Definition", International
 +
        Organization for Standardization, Draft Proposal 9595/2,
 +
        December 1987.
 +
 +
  [3]  Information processing systems - Open Systems Interconnection,
 +
        "Management Information Protocol Specification", International
 +
        Organization for Standardization, Draft Proposal 9596/2,
 +
        December 1987.
 +
 +
  [4]  Rose M., and K. McCloghrie, "Structure and Identification of
 +
        Management Information for TCP/IP-based internets", RFC 1065,
 +
        TWG, August 1988.
 +
 +
  [5]  Partridge C., and G. Trewitt, "The High-Level Entity Management
 +
        System (HEMS)", RFCs 1021-1024, BBN and Stanford, October 1987.
 +
 +
  [6]  Cerf, V., "Report of the Second Ad Hoc Network Management Review
 +
        Group", RFC 1109, IAB, August 1989.
 +
 +
  [7]  Rose, M., and K. McCloghrie, "Structure and Identification of
 +
        Management Information for TCP/IP-based Internets", RFC 1155,
 +
        Performance Systems International and Hughes LAN Systems, May
 +
        1990.
 +
 +
  [8]  Case, J., M. Fedor, M. Schoffstall, and J. Davin, The Simple
 +
        Network Management Protocol", RFC 1157, University of Tennessee
 +
        at Knoxville, Performance Systems International, Performance
 +
        Systems International, and the MIT Laboratory for Computer
 +
        Science, May 1990.
 +
 +
  [9]  Partridge C., and G. Trewitt, "HEMS Variable Definitions", RFC
 +
        1024, BBN and Stanford, October 1987.
 +
 +
  [10]  Case, J., M. Fedor, M. Schoffstall, and J. Davin, "A Simple
 +
        Network Management Protocol", RFC 1067, University of Tennessee
 +
        At Knoxville, NYSERNet, Rensselaer Polytechnic, Proteon, August
 +
        1988.
 +
 +
  [11]  LaBarre, L., "Structure and Identification of Management
 +
        Information for the Internet", Internet Engineering Task Force
 +
        working note, Network Information Center, SRI International,
 +
        Menlo Park, California, April 1988.
 +
 +
 +
 +
McCloghrie & Rose                                           
 +
 +
RFC 1156                          MIB                          May 1990
 +
 +
 +
  [12]  LaBarre, L., "Transport Layer Management Information:  TCP",
 +
        Internet Engineering Task Force working note in preparation.
 +
        Network Information Center, SRI International, Menlo Park,
 +
        California, (unpublished).
 +
 +
  [13]  Information processing systems - Open Systems Interconnection,
 +
        "Specification of Abstract Syntax Notation One (ASN.1)",
 +
        International Organization for Standardization, International
 +
        Standard 8824, December 1987.
 +
 +
  [14]  Information processing systems - Open Systems Interconnection,
 +
        "Specification of Basic Encoding Rules for Abstract Notation One
 +
        (ASN.1)", International Organization for Standardization,
 +
        International Standard 8825, December 1987.
 +
 +
  [15]  Jacobson, V., "Congestion Avoidance and Control", SIGCOMM, 1988,
 +
        Stanford, California.
 +
 +
Security Considerations
 +
 +
  Security issues are not discussed in this memo.
  
−
  [12]  LaBarre, L., "Transport Layer Management Information:  TCP",    Internet Engineering Task Force working note in preparation.    Network Information Center, SRI International, Menlo Park,    California, (unpublished).
 
−
  [13]  Information processing systems - Open Systems Interconnection,    "Specification of Abstract Syntax Notation One (ASN.1)",    International Organization for Standardization, International    Standard 8824, December 1987.
 
−
  [14]  Information processing systems - Open Systems Interconnection,    "Specification of Basic Encoding Rules for Abstract Notation One    (ASN.1)", International Organization for Standardization,    International Standard 8825, December 1987.
 
−
  [15]  Jacobson, V., "Congestion Avoidance and Control", SIGCOMM, 1988,    Stanford, California.
 
−
Security Considerations
 
−
Security issues are not discussed in this memo.
 
 
Authors' Addresses
 
Authors' Addresses
  
−
Keith McCloghrie
+
  Keith McCloghrie
−
The Wollongong Group
+
  The Wollongong Group
−
1129 San Antonio Road
+
  1129 San Antonio Road
−
Palo Alto, CA 04303
+
  Palo Alto, CA 04303
 +
 
 +
  Phone: (415) 962-7160
 +
 
 +
 +
 
 +
 
 +
  Marshall T. Rose
 +
  PSI, Inc.
 +
  PSI California Office
 +
  P.O. Box 391776
 +
  Mountain View, CA 94039
 +
 
 +
  Phone: (415) 961-3380
 +
 
 +
 +
 
 +
 
  
−
Phone: (415) 962-7160
 
  
− 
  
  
−
Marshall T. Rose
 
−
PSI, Inc.
 
−
PSI California Office
 
−
P.O. Box 391776
 
−
Mountain View, CA 94039
 
  
−
Phone: (415) 961-3380
 
  
−+
McCloghrie & Rose

Revision as of 23:40, 22 September 2020




Network Working Group K. McCloghrie Request For Comments: 1156 Hughes LAN Systems Obsoletes: RFC 1066 M. Rose 

                                     Performance Systems International
                                                              May 1990



          Management Information Base for Network Management
                      of TCP/IP-based internets

                          Table of Contents

  1. Status of this Memo ...................................   1
  2. IAB Policy Statement ..................................   2
  3. Introduction ..........................................   2
  4. Objects ...............................................   6
  4.1 Object Groups ........................................   6
  4.2 Format of Definitions ................................   7
  5. Object Definitions ....................................   8
  5.1 The System Group .....................................   9
  5.2 The Interfaces Group .................................  11
  5.2.1 The Interfaces Table ...............................  11
  5.3 The Address Translation Group ........................  23
  5.4 The IP Group .........................................  26
  5.4.1 The IP Address Table ...............................  34
  5.4.2 The IP Routing Table ...............................  36
  5.5 The ICMP Group .......................................  43
  5.6 The TCP Group ........................................  53
  5.7 The UDP Group ........................................  62
  5.8 The EGP Group ........................................  64
  5.8.1 The EGP Neighbor Table .............................  65
  6. Definitions ...........................................  68
  7. Acknowledgements ......................................  89
  8. References ............................................  90
  9. Security Considerations................................  91
  10. Authors' Addresses....................................  91

1. Status of this Memo 

  This RFC is a re-release of RFC 1066, with a changed "Status of this
  Memo", "IAB Policy Statement", and "Introduction" sections plus a few
  minor typographical corrections.  The technical content of the
  document is unchanged from RFC 1066.

  This memo provides the initial version of the Management Information
  Base (MIB) for use with network management protocols in TCP/IP-based
  internets in the short-term.  In particular, together with its
  companion memos which describe the structure of management


McCloghrie & Rose

RFC 1156 MIB May 1990 


  information along with the initial network management protocol, these
  documents provide a simple, workable architecture and system for
  managing TCP/IP-based internets and in particular the Internet.

  This memo specifies a Standard Protocol for the Internet community.
  TCP/IP implementations in the Internet which are network manageable
  are expected to adopt and implement this specification.

  The Internet Activities Board recommends that all IP and TCP
  implementations be network manageable.  This implies implementation
  of the Internet MIB (RFC-1156) and at least one of the two
  recommended management protocols SNMP (RFC-1157) or CMOT (RFC-1095).
  It should be noted that, at this time, SNMP is a full Internet
  standard and CMOT is a draft standard.  See also the Host and Gateway
  Requirements RFCs for more specific information on the applicability
  of this standard.

  Please refer to the latest edition of the "IAB Official Protocol
  Standards" RFC for current information on the state and status of
  standard Internet protocols.

  Distribution of this memo is unlimited.

2. IAB Policy Statement 

  This MIB specification is the first edition of an evolving document
  defining variables needed for monitoring and control of various
  components of the Internet.  Not all groups of defined variables are
  mandatory for all Internet components.

  For example, the EGP group is mandatory for gateways using EGP but
  not for hosts which should not be running EGP.  Similarly, the TCP
  group is mandatory for hosts running TCP but not for gateways which
  aren't running it.  What IS mandatory, however, is that all variables
  of a group be supported if any element of the group is supported.

  It is expected that additional MIB groups and variables will be
  defined over time to accommodate the monitoring and control needs of
  new or changing components of the Internet.  The responsible working
  group(s) will continue to refine this specification.

3. Introduction 

  As reported in RFC 1052, IAB Recommendations for the Development of
  Internet Network Management Standards [1], the Internet Activities
  Board has directed the Internet Engineering Task Force (IETF) to
  create two new working groups in the area of network management.  One
  group was charged with the further specification and definition of


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  elements to be included in the Management Information Base.  The
  other was charged with defining the modifications to the Simple
  Network Management Protocol (SNMP) to accommodate the short-term
  needs of the network vendor and operator communities.  In the long-
  term, the use of the OSI network management framework was to be
  examined using the ISO CMIS/CMIP [2,3] framework as a basis.  Two
  documents were produced to define the management information:  RFC
  1065, which defined the Structure of Management Information (SMI)
  [4], and RFC 1066, which defined the Management Information Base
  (MIB) [5].  Both of these documents were designed so as to be
  compatible with both the SNMP and the OSI network management
  framework.

  This strategy was quite successful in the short-term: Internet-based
  network management technology was fielded, by both the research and
  commercial communities, within a few months.  As a result of this,
  portions of the Internet community became network manageable in a
  timely fashion.

  As reported in RFC 1109, Report of the Second Ad Hoc Network
  Management Review Group [6], the requirements of the SNMP and the OSI
  network management frameworks were more different than anticipated.
  As such, the requirement for compatibility between the SMI/MIB and
  both frameworks was suspended.

  The IAB has designated the SNMP, SMI, and the initial Internet MIB to
  be full "Standard Protocols" with "Recommended" status.  By this
  action, the IAB recommends that all IP and TCP implementations be
  network manageable and that the implementations that are network
  manageable are expected to adopt and implement the SMI, MIB, and
  SNMP.

  As such, the current network management framework for TCP/IP- based
  internets consists of:  Structure and Identification of Management
  Information for TCP/IP-based Internets, which describes how managed
  objects contained in the MIB are defined as set forth in RFC 1155
  [7]; Management Information Base for Network Management of TCP/IP-
  based Internets, which describes the managed objects contained in the
  MIB as set forth in this memo; and, the Simple Network Management
  Protocol, which defines the protocol used to manage these objects, as
  set forth in RFC 1157 [8].

  The IAB also urged the working groups to be "extremely sensitive to
  the need to keep SNMP simple," and recommends that the MIB working
  group take as its starting inputs the MIB definitions found in the
  High-Level Entity Management Systems (HEMS) RFC 1024 [9], the initial
  SNMP specification [10], and the CMIS/CMIP memos [11,12].



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  Thus, the list of managed objects defined here, has been derived by
  taking only those elements which are considered essential.  Since
  such elements are essential, there is no need to allow the
  implementation of individual objects, to be optional.  Rather, all
  compliant implementations will contain all applicable (see below)
  objects defined in this memo.

  This approach of taking only the essential objects is NOT
  restrictive, since the SMI defined in the companion memo provides
  three extensibility mechanisms:  one, the addition of new standard
  objects through the definitions of new versions of the MIB; two, the
  addition of widely-available but non-standard objects through the
  multilateral subtree; and three, the addition of private objects
  through the enterprises subtree. Such additional objects can not only
  be used for vendor-specific elements, but also for experimentation as
  required to further the knowledge of which other objects are
  essential.

  The primary criterion for being considered essential was for an
  object to be contained in all of the above referenced MIB
  definitions.  A few other objects have been included, but only if the
  MIB working group believed they are truly essential.  The detailed
  list of criteria against which potential inclusions in this (initial)
  MIB were considered, was:

     1) An object needed to be essential for either fault or
        configuration management.

     2) Only weak control objects were permitted (by weak, it
        is meant that tampering with them can do only limited
        damage).  This criterion reflects the fact that the
        current management protocols are not sufficiently secure
        to do more powerful control operations.

     3) Evidence of current use and utility was required.

     4) An attempt was made to limit the number of objects to
        about 100 to make it easier for vendors to fully
        instrument their software.

     5) To avoid redundant variables, it was required that no
        object be included that can be derived from others in the
        MIB.

     6) Implementation specific objects (e.g., for BSD UNIX)
        were excluded.

     7) It was agreed to avoid heavily instrumenting critical


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        sections of code.  The general guideline was one counter
        per critical section per layer.

























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4. Objects 

  Managed objects are accessed via a virtual information store, termed
  the Management Information Base or MIB.  Objects in the MIB are
  defined using Abstract Syntax Notation One (ASN.1) [13].

  The mechanisms used for describing these objects are specified in the
  companion memo.  In particular, each object has a name, a syntax, and
  an encoding.  The name is an object identifier, an administratively
  assigned name, which specifies an object type.  The object type
  together with an object instance serves to uniquely identify a
  specific instantiation of the object.  For human convenience, we
  often use a textual string, termed the OBJECT DESCRIPTOR, to also
  refer to the object type.

  The syntax of an object type defines the abstract data structure
  corresponding to that object type.  The ASN.1 language is used for
  this purpose.  However, the companion memo purposely restricts the
  ASN.1 constructs which may be used.  These restrictions are
  explicitly made for simplicity.

  The encoding of an object type is simply how that object type is
  represented using the object type's syntax.  Implicitly tied to the
  notion of an object type's syntax and encoding is how the object type
  is represented when being transmitted on the network.  This memo
  specifies the use of the basic encoding rules of ASN.1 [14].

4.1. Object Groups 

  Since this list of managed objects contains only the essential
  elements, there is no need to allow individual objects to be
  optional.  Rather, the objects are arranged into the following
  groups:

                 - System
                 - Interfaces
                 - Address Translation
                 - IP
                 - ICMP
                 - TCP
                 - UDP
                 - EGP

  There are two reasons for defining these groups:  one, to provide a
  means of assigning object identifiers; two, to provide a method for
  implementations of managed agents to know which objects they must
  implement.  This method is as follows: if the semantics of a group is
  applicable to an implementation, then it must implement all objects


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  in that group.  For example, an implementation must implement the EGP
  group if and only if it implements the EGP protocol.

4.2. Format of Definitions 

  The next section contains the specification of all object types
  contained in the MIB. Following the conventions of the companion
  memo, the object types are defined using the following fields:

         OBJECT:
         -------
              A textual name, termed the OBJECT DESCRIPTOR, for the
              object type, along with its corresponding OBJECT
              IDENTIFIER.

         Syntax:
              The abstract syntax for the object type, presented using
              ASN.1.  This must resolve to an instance of the ASN.1
              type ObjectSyntax defined in the SMI.

         Definition:
              A textual description of the semantics of the object
              type.  Implementations should ensure that their
              interpretation of the object type fulfills this
              definition since this MIB is intended for use in multi-
              vendor environments.  As such it is vital that object
              types have consistent meaning across all machines.

         Access:
              One of read-only, read-write, write-only, or
              not-accessible.

         Status:
             One of mandatory, optional, or obsolete.









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5. Object Definitions 

              RFC1156-MIB

              DEFINITIONS ::= BEGIN

              IMPORTS
                      mgmt, OBJECT-TYPE, NetworkAddress, IpAddress,
                      Counter, Gauge, TimeTicks
                          FROM RFC1155-SMI;

              mib        OBJECT IDENTIFIER ::= { mgmt 1 }

              system     OBJECT IDENTIFIER ::= { mib 1 }
              interfaces OBJECT IDENTIFIER ::= { mib 2 }
              at         OBJECT IDENTIFIER ::= { mib 3 }
              ip         OBJECT IDENTIFIER ::= { mib 4 }
              icmp       OBJECT IDENTIFIER ::= { mib 5 }
              tcp        OBJECT IDENTIFIER ::= { mib 6 }
              udp        OBJECT IDENTIFIER ::= { mib 7 }
              egp        OBJECT IDENTIFIER ::= { mib 8 }

              END















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5.1. The System Group 

         Implementation of the System group is mandatory for all
         systems.

         OBJECT:
         -------
              sysDescr { system 1 }

         Syntax:
              OCTET STRING

         Definition:
              A textual description of the entity.  This value should
              include the full name and version identification of the
              system's hardware type, software operating-system, and
              networking software.  It is mandatory that this only
              contain printable ASCII characters.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              sysObjectID { system 2 }

         Syntax:
              OBJECT IDENTIFIER

         Definition:
              The vendor's authoritative identification of the network
              management subsystem contained in the entity.  This value
              is allocated within the SMI enterprises subtree
              (1.3.6.1.4.1) and provides an easy and unambiguous means
              for determining "what kind of box" is being managed.  For
              example, if vendor "Flintstones, Inc." was assigned the
              subtree 1.3.6.1.4.1.42, it could assign the identifier
              1.3.6.1.4.1.42.1.1 to its "Fred Router".

         Access:
              read-only.

         Status:
              mandatory.


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         OBJECT:
         -------
              sysUpTime { system 3 }

         Syntax:
              TimeTicks

         Definition:
              The time (in hundredths of a second) since the network
              management portion of the system was last re-initialized.

         Access:
              read-only.

         Status:
              mandatory.


















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5.2. The Interfaces Group 

         Implementation of the Interfaces group is mandatory for all
         systems.

         OBJECT:
         -------
              ifNumber { interfaces 1 }

         Syntax:
              INTEGER

         Definition:
              The number of network interfaces (regardless of their
              current state) on which this system can send/receive IP
              datagrams.

         Access:
              read-only.

         Status:
              mandatory.

5.2.1. The Interfaces Table 

         OBJECT:
         -------
              ifTable { interfaces 2 }

         Syntax:
              SEQUENCE OF IfEntry

         Definition:
              A list of interface entries.  The number of entries is
              given by the value of ifNumber.

         Access:
              read-write.

         Status:
              mandatory.

         OBJECT:
         -------
              ifEntry { ifTable 1 }

         Syntax:
              IfEntry ::= SEQUENCE {


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                   ifIndex
                       INTEGER,
                   ifDescr
                       OCTET STRING,
                   ifType
                       INTEGER,
                   ifMtu
                       INTEGER,
                   ifSpeed
                       Gauge,
                   ifPhysAddress
                       OCTET STRING,
                   ifAdminStatus
                       INTEGER,
                   ifOperStatus
                       INTEGER,
                   ifLastChange
                       TimeTicks,
                   ifInOctets
                       Counter,
                   ifInUcastPkts
                       Counter,
                   ifInNUcastPkts
                       Counter,
                   ifInDiscards
                       Counter,
                   ifInErrors
                       Counter,
                   ifInUnknownProtos
                       Counter,
                   ifOutOctets
                       Counter,
                   ifOutUcastPkts
                       Counter,
                   ifOutNUcastPkts
                       Counter,
                   ifOutDiscards
                       Counter,
                   ifOutErrors
                       Counter,
                   ifOutQLen
                       Gauge
              }

         Definition:
              An interface entry containing objects at the subnetwork
              layer and below for a particular interface.



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         Access:
              read-write.

         Status:
              mandatory.



         We now consider the individual components of each interface
         entry:



         OBJECT:
         -------
              ifIndex { ifEntry 1 }

         Syntax:
              INTEGER

         Definition:
              A unique value for each interface.  Its value ranges
              between 1 and the value of ifNumber.  The value for each
              interface must remain constant at least from one re-
              initialization of the entity's network management system
              to the next re-initialization.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ifDescr { ifEntry 2 }

         Syntax:
              OCTET STRING

         Definition:
              A text string containing information about the interface.
              This string should include the name of the manufacturer,
              the product name and the version of the hardware
              interface.  The string is intended for presentation to a
              human; it must not contain anything but printable ASCII
              characters.



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         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ifType { ifEntry 3 }

         Syntax:
              INTEGER {
                   other(1),          -- none of the following
                   regular1822(2),
                   hdh1822(3),
                   ddn-x25(4),
                   rfc877-x25(5),
                   ethernet-csmacd(6),
                   iso88023-csmacd(7),
                   iso88024-tokenBus(8),
                   iso88025-tokenRing(9),
                   iso88026-man(10),
                   starLan(11),
                   proteon-10MBit(12),
                   proteon-80MBit(13),
                   hyperchannel(14),
                   fddi(15),
                   lapb(16),
                   sdlc(17),
                   t1-carrier(18),
                   cept(19),          -- european equivalent of T-1
                   basicIsdn(20),
                   primaryIsdn(21),
                                       -- proprietary serial
                   propPointToPointSerial(22)
              }

         Definition:
              The type of interface, distinguished according to the
              physical/link/network protocol(s) immediately "below" IP
              in the protocol stack.

         Access:
              read-only.

         Status:
              mandatory.


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         OBJECT:
         -------
              ifMtu { ifEntry 4 }

         Syntax:
              INTEGER

         Definition:
              The size of the largest IP datagram which can be
              sent/received on the interface, specified in octets.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ifSpeed { ifEntry 5 }

         Syntax:
              Gauge

         Definition:
              An estimate of the interface's current bandwidth in bits
              per second.  For interfaces which do not vary in
              bandwidth or for those where no accurate estimation can
              be made, this object should contain the nominal
              bandwidth.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ifPhysAddress { ifEntry 6 }

         Syntax:
              OCTET STRING

         Definition:
              The interface's address at the protocol layer immediately


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              "below" IP in the protocol stack.  For interfaces which
              do not have such an address (e.g., a serial line), this
              object should contain an octet string of zero length.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ifAdminStatus { ifEntry 7 }

         Syntax:
              INTEGER {
                   up(1),       -- ready to pass packets
                   down(2),
                   testing(3)   -- in some test mode
                 }

          Definition:
              The desired state of the interface.  The testing(3) state
              indicates that no operational packets can be passed.

          Access:
              read-write.

          Status:
              mandatory.



         OBJECT:
         -------
              ifOperStatus { ifEntry 8 }

         Syntax:
              INTEGER {
                   up(1),       -- ready to pass packets
                   down(2),
                   testing(3)   -- in some test mode
              }

         Definition:
              The current operational state of the interface.  The
              testing(3) state indicates that no operational packets
              can be passed.


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         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ifLastChange { ifEntry 9 }

         Syntax:
              TimeTicks

         Definition:
              The value of sysUpTime at the time the interface entered
              its current operational state.  If the current state was
              entered prior to the last re-initialization of the local
              network management subsystem, then this object contains a
              zero value.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ifInOctets { ifEntry 10 }

         Syntax:
              Counter

         Definition:
              The total number of octets received on the interface,
              including framing characters.

         Access:
              read-only.

         Status:
              mandatory.




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         OBJECT:
         -------
              ifInUcastPkts  { ifEntry 11 }

         Syntax:
              Counter

         Definition:
              The number of (subnet) unicast packets delivered to a
              higher-layer protocol.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ifInNUcastPkts { ifEntry 12 }

         Syntax:
              Counter

         Definition:
              The number of non-unicast (i.e., subnet broadcast or
              subnet multicast) packets delivered to a higher-layer
              protocol.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ifInDiscards { ifEntry 13 }

         Syntax:
              Counter

         Definition:
              The number of inbound packets which were chosen to be
              discarded even though no errors had been detected to
              prevent their being deliverable to a higher-layer


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              protocol.  One possible reason for discarding such a
              packet could be to free up buffer space.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ifInErrors { ifEntry 14 }

         Syntax:
              Counter

         Definition:
              The number of inbound packets that contained errors
              preventing them from being deliverable to a higher-layer
              protocol.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ifInUnknownProtos { ifEntry 15 }

         Syntax:
              Counter

         Definition:
              The number of packets received via the interface which
              were discarded because of an unknown or unsupported
              protocol.

         Access:
              read-only.

         Status:
             mandatory.



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         OBJECT:
         -------
              ifOutOctets { ifEntry 16 }

         Syntax:
              Counter

         Definition:
              The total number of octets transmitted out of the
              interface, including framing characters.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ifOutUcastPkts { ifEntry 17 }

          Syntax:
              Counter

         Definition:
              The total number of packets that higher-level protocols
              requested be transmitted to a subnet-unicast address,
              including those that were discarded or not sent.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
             ifOutNUcastPkts { ifEntry 18 }

         Syntax:
              Counter

         Definition:
              The total number of packets that higher-level protocols
              requested be transmitted to a non-unicast (i.e., a subnet
              broadcast or subnet multicast) address, including those


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              that were discarded or not sent.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ifOutDiscards { ifEntry 19 }

         Syntax:
              Counter

         Definition:
              The number of outbound packets which were chosen to be
              discarded even though no errors had been detected to
              prevent their being transmitted.  One possible reason for
              discarding such a packet could be to free up buffer
              space.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ifOutErrors { ifEntry 20 }

         Syntax:
              Counter

         Definition:
              The number of outbound packets that could not be
              transmitted because of errors.

         Access:
              read-only.

         Status:
              mandatory.



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         OBJECT:
         -------
              ifOutQLen { ifEntry 21 }

         Syntax:
              Gauge

         Definition:
              The length of the output packet queue (in packets).

         Access:
              read-only.

         Status:
              mandatory.



















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5.3. The Address Translation Group 

  Implementation of the Address Translation group is mandatory
  for all systems.

  The Address Translation group contains one table which is the
  union across all interfaces of the translation tables for
  converting a NetworkAddress (e.g., an IP address) into a
  subnetwork-specific address.  For lack of a better term, this
  document refers to such a subnetwork-specific address as a
  "physical" address.

  Examples of such translation tables are:  for broadcast media
  where ARP is in use, the translation table is equivalent to
  the ARP cache; or, on an X.25 network where non-algorithmic
  translation to X.121 addresses is required, the translation
  table contains the NetworkAddress to X.121 address
  equivalences.

         OBJECT:
         -------
              atTable { at 1 }

         Syntax:
              SEQUENCE OF AtEntry

         Definition:
              The Address Translation tables contain the NetworkAddress
              to "physical" address equivalences.  Some interfaces do
              not use translation tables for determining address
              equivalences (e.g., DDN-X.25 has an algorithmic method);
              if all interfaces are of this type, then the Address
              Translation table is empty, i.e., has zero entries.

         Access:
              read-write.

         Status:
              mandatory.



         OBJECT:
         -------
              atEntry { atTable 1 }

         Syntax:
              AtEntry ::= SEQUENCE {
                   atIfIndex


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                       INTEGER,
                   atPhysAddress
                       OCTET STRING,
                   atNetAddress
                       NetworkAddress
              }

         Definition:
              Each entry contains one NetworkAddress to "physical"
              address equivalence.

         Access:
              read-write.

         Status:
              mandatory.

         We now consider the individual components of each Address
         Translation table entry:



         OBJECT:
         -------
              atIfIndex { atEntry 1 }

         Syntax:
              INTEGER

         Definition:
              The interface on which this entry's equivalence is
              effective.  The interface identified by a particular
              value of this index is the same interface as identified
               by the same value of ifIndex.

         Access:
              read-write.

         Status:
              mandatory.



         OBJECT:
         -------
              atPhysAddress { atEntry 2 }

         Syntax:
              OCTET STRING



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         Definition:
              The media-dependent "physical" address.

         Access:
              read-write.

         Status:
              mandatory.



         OBJECT:
         -------
              atNetAddress { atEntry 3 }

         Syntax:
              NetworkAddress

         Definition:
              The NetworkAddress (e.g., the IP address) corresponding to
              the media-dependent "physical" address.

         Access:
              read-write.

         Status:
              mandatory.













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5.4. The IP Group 

  Implementation of the IP group is mandatory for all systems.



         OBJECT:
         -------
              ipForwarding { ip 1 }

         Syntax:
              INTEGER {
                   gateway(1),   -- entity forwards datagrams
                   host(2)       -- entity does NOT forward datagrams
              }

         Definition:
              The indication of whether this entity is acting as an IP
              gateway in respect to the forwarding of datagrams
              received by, but not addressed to, this entity.  IP
              gateways forward datagrams; Hosts do not (except those
              Source-Routed via the host).

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipDefaultTTL { ip 2 }

         Syntax:
              INTEGER

         Definition:
              The default value inserted into the Time-To-Live field of
              the IP header of datagrams originated at this entity,
              whenever a TTL value is not supplied by the transport
              layer protocol.

         Access:
              read-write.

         Status:
              mandatory.



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         OBJECT:
         -------
              ipInReceives { ip 3 }

         Syntax:
              Counter

         Definition:
              The total number of input datagrams received from
              interfaces, including those received in error.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipInHdrErrors { ip 4 }

         Syntax:
              Counter

         Definition:
              The number of input datagrams discarded due to errors in
              their IP headers, including bad checksums, version number
              mismatch, other format errors, time-to-live exceeded,
              errors discovered in processing their IP options, etc.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipInAddrErrors { ip 5 }

         Syntax:
              Counter

         Definition:
              The number of input datagrams discarded because the IP
              address in their IP header's destination field was not a


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              valid address to be received at this entity.  This count
              includes invalid addresses (e.g., 0.0.0.0) and addresses
              of unsupported Classes (e.g., Class E).  For entities
              which are not IP Gateways and therefore do not forward
              datagrams, this counter includes datagrams discarded
              because the destination address was not a local address.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipForwDatagrams { ip 6 }

         Syntax:
              Counter

         Definition:
              The number of input datagrams for which this entity was
              not their final IP destination, as a result of which an
              attempt was made to find a route to forward them to that
              final destination.  In entities which do not act as IP
              Gateways, this counter will include only those packets
              which were Source-Routed via this entity, and the
              Source-Route option processing was successful.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipInUnknownProtos { ip 7 }

         Syntax:
              Counter

         Definition:
              The number of locally-addressed datagrams received
              successfully but discarded because of an unknown or
              unsupported protocol.


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          Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipInDiscards { ip 8 }

         Syntax:
              Counter

         Definition:
              The number of input IP datagrams for which no problems
              were encountered to prevent their continued processing,
              but which were discarded (e.g. for lack of buffer space).
              Note that this counter does not include any datagrams
              discarded while awaiting re-assembly.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipInDelivers { ip 9 }

         Syntax:
              Counter

         Definition:
              The total number of input datagrams successfully
              delivered to IP user-protocols (including ICMP).

         Access:
              read-only.

         Status:
              mandatory.

         OBJECT:
         -------
              ipOutRequests { ip 10 }


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         Syntax:
              Counter

         Definition:
              The total number of IP datagrams which local IP user-
              protocols (including ICMP) supplied to IP in requests for
              transmission.  Note that this counter does not include
              any datagrams counted in ipForwDatagrams.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipOutDiscards { ip 11 }

         Syntax:
              Counter

         Definition:
              The number of output IP datagrams for which no problem
              was encountered to prevent their transmission to their
              destination, but which were discarded (e.g., for lack of
              buffer space).  Note that this counter would include
              datagrams counted in ipForwDatagrams if any such packets
              met this (discretionary) discard criterion.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipOutNoRoutes { ip 12 }

         Syntax:
              Counter




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         Definition:
              The number of IP datagrams discarded because no route
              could be found to transmit them to their destination.
              Note that this counter includes any packets counted in
              ipForwDatagrams which meet this "no-route" criterion.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipReasmTimeout { ip 13 }

         Syntax:
              INTEGER

         Definition:
              The maximum number of seconds which received fragments
              are held while they are awaiting reassembly at this
              entity.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipReasmReqds { ip 14 }

         Syntax:
              Counter

         Definition:
              The number of IP fragments received which needed to be
              reassembled at this entity.

         Access:
              read-only.

         Status:
              mandatory.


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         OBJECT:
         -------
              ipReasmOKs { ip 15 }

         Syntax:
              Counter

         Definition:
              The number of IP datagrams successfully re-assembled.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipReasmFails { ip 16 }

         Syntax:
              Counter

         Definition:
              The number of failures detected by the IP re-assembly
              algorithm (for whatever reason:  timed out, errors, etc).

              Note that this is not necessarily a count of discarded IP
              fragments since some algorithms (notably RFC 815's) can
              lose track of the number of fragments by combining them
              as they are received.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipFragOKs { ip 17 }

         Syntax:
             Counter



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         Definition:
              The number of IP datagrams that have been successfully
              fragmented at this entity.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipFragFails { ip 18 }

         Syntax:
              Counter

         Definition:
              The number of IP datagrams that have been discarded
              because they needed to be fragmented at this entity but
              could not be, e.g., because their "Don't Fragment" flag
              was set.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipFragCreates { ip 19 }

         Syntax:
              Counter

         Definition:
              The number of IP datagram fragments that have been
              generated as a result of fragmentation at this entity.

         Access:
              read-only.

         Status:
              mandatory.



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5.4.1. The IP Address Table 

  The Ip Address table contains this entity's IP addressing
  information.



         OBJECT:
         -------
              ipAddrTable { ip 20 }

         Syntax:
              SEQUENCE OF IpAddrEntry

         Definition:
              The table of addressing information relevant to this
              entity's IP addresses.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipAddrEntry { ipAddrTable 1 }

         Syntax:
              IpAddrEntry ::= SEQUENCE {
                   ipAdEntAddr
                       IpAddress,
                   ipAdEntIfIndex
                       INTEGER,
                   ipAdEntNetMask
                       IpAddress,
                   ipAdEntBcastAddr
                       INTEGER
              }

         Definition:
              The addressing information for one of this entity's IP
              addresses.

         Access:
              read-only.



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         Status:
              mandatory.



         OBJECT:
         -------
              ipAdEntAddr  { ipAddrEntry 1 }

         Syntax:
              IpAddress

         Definition:
              The IP address to which this entry's addressing
              information pertains.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipAdEntIfIndex  { ipAddrEntry 2 }

         Syntax:
              INTEGER

         Definition:
              The index value which uniquely identifies the interface
              to which this entry is applicable.  The interface
              identified by a particular value of this index is the
               same interface as identified by the same value of
               ifIndex.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipAdEntNetMask  { ipAddrEntry 3 }



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         Syntax:
              IpAddress

         Definition:
              The subnet mask associated with the IP address of this
              entry.  The value of the mask is an IP address with all
              the network bits set to 1 and all the hosts bits set to
              0.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipAdEntBcastAddr { ipAddrEntry 4 }

         Syntax:
              INTEGER

         Definition:
              The value of the least-significant bit in the IP
              broadcast address used for sending datagrams on the
              (logical) interface associated with the IP address of
              this entry.  For example, when the Internet standard
              all-ones broadcast address is used, the value will be 1.

         Access:
              read-only.

         Status:
              mandatory.

5.4.2. The IP Routing Table 

  The IP Routing Table contains an entry for each route
  presently known to this entity.  Note that the action to be
  taken in response to a request to read a non-existent entry,
  is specific to the network management protocol being used.



         OBJECT:
         -------
              ipRoutingTable { ip 21 }



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         Syntax:
              SEQUENCE OF IpRouteEntry

         Definition:
              This entity's IP Routing table.

         Access:
              read-write.

         Status:
              mandatory.



         OBJECT:
         -------
              ipRouteEntry { ipRoutingTable 1 }

         Syntax:
              IpRouteEntry ::= SEQUENCE {
                   ipRouteDest
                       IpAddress,
                   ipRouteIfIndex
                       INTEGER,
                   ipRouteMetric1
                       INTEGER,
                   ipRouteMetric2
                       INTEGER,
                   ipRouteMetric3
                       INTEGER,
                   ipRouteMetric4
                       INTEGER,
                   ipRouteNextHop
                       IpAddress,
                   ipRouteType
                       INTEGER,
                   ipRouteProto
                       INTEGER,
                   ipRouteAge
                       INTEGER
              }

         Definition:
              A route to a particular destination.

         Access:
              read-write.



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         Status:
              mandatory.

         We now consider the individual components of each route in the
         IP Routing Table:



         OBJECT:
         -------
              ipRouteDest { ipRouteEntry 1 }

         Syntax:
              IpAddress

         Definition:
              The destination IP address of this route.  An entry with
              a value of 0.0.0.0 is considered a default route.
              Multiple such default routes can appear in the table, but
              access to such multiple entries is dependent on the
              table-access mechanisms defined by the network management
              protocol in use.

         Access:
              read-write.

         Status:
              mandatory.



         OBJECT:
         -------
              ipRouteIfIndex  { ipRouteEntry 2 }

         Syntax:
              INTEGER

         Definition:
              The index value which uniquely identifies the local
              interface through which the next hop of this route should
              be reached.  The interface identified by a particular
              value of this index is the same interface as identified
              by the same value of ifIndex.

         Access:
              read-write.

         Status:
              mandatory.


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         OBJECT:
         -------
              ipRouteMetric1 { ipRouteEntry 3 }

         Syntax:
              INTEGER

         Definition:
              The primary routing metric for this route.  The semantics
              of this metric are determined by the routing-protocol
              specified in the route's ipRouteProto value.  If this
              metric is not used, its value should be set to -1.

         Access:
              read-write.

         Status:
              mandatory.



         OBJECT:
         -------
              ipRouteMetric2 { ipRouteEntry 4 }

         Syntax:
              INTEGER

         Definition:
              An alternate routing metric for this route.  The
              semantics of this metric are determined by the routing-
              protocol specified in the route's ipRouteProto value.  If
              this metric is not used, its value should be set to -1.

         Access:
              read-write.

         Status:
              mandatory.



         OBJECT:
         -------
              ipRouteMetric3 { ipRouteEntry 5 }

         Syntax:
              INTEGER



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         Definition:
              An alternate routing metric for this route.  The
              semantics of this metric are determined by the routing-
              protocol specified in the route's ipRouteProto value.  If
              this metric is not used, its value should be set to -1.

          Access:
              read-write.

          Status:
              mandatory.



         OBJECT:
         -------
              ipRouteMetric4 { ipRouteEntry 6 }

         Syntax:
              INTEGER

         Definition:
              An alternate routing metric for this route.  The
              semantics of this metric are determined by the routing-
              protocol specified in the route's ipRouteProto value.  If
              this metric is not used, its value should be set to -1.

         Access:
              read-write.

         Status:
              mandatory.



         OBJECT:
         -------
              ipRouteNextHop { ipRouteEntry 7 }

         Syntax:
              IpAddress

         Definition:
              The IP address of the next hop of this route.

         Access:
              read-write.

         Status:
              mandatory.


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         OBJECT:
         -------
              ipRouteType { ipRouteEntry 8 }

         Syntax:
              INTEGER {
                   other(1),        -- none of the following

                   invalid(2),      -- an invalidated route

                                    -- route to directly
                   direct(3),       -- connected (sub-)network

                                    -- route to a non-local
                   remote(4),       -- host/network/sub-network
              }

         Definition:
              The type of route.

         Access:
              read-write.

         Status:
              mandatory.



         OBJECT:
         -------
              ipRouteProto { ipRouteEntry 9 }

         Syntax:
              INTEGER {
                   other(1),       -- none of the following

                                   -- non-protocol information,
                                   -- e.g., manually configured
                   local(2),       -- entries

                                   -- set via a network management
                   netmgmt(3),     -- protocol

                                   -- obtained via ICMP,
                   icmp(4),        -- e.g., Redirect

                                   -- the remaining values are
                                   -- all gateway routing protocols
                   egp(5),


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                   ggp(6),
                   hello(7),
                   rip(8),
                   is-is(9),
                   es-is(10),
                   ciscoIgrp(11),
                   bbnSpfIgp(12),
                   oigp(13)
              }

         Definition:
              The routing mechanism via which this route was learned.
              Inclusion of values for gateway routing protocols is not
              intended to imply that hosts should support those
              protocols.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              ipRouteAge { ipRouteEntry 10 }

         Syntax:
              INTEGER

         Definition:
              The number of seconds since this route was last updated
              or otherwise determined to be correct.   Note that no
              semantics of "too old" can be implied except through
              knowledge of the routing protocol by which the route was
              learned.

         Access:
              read-write.

         Status:
              mandatory.





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RFC 1156 MIB May 1990


5.5. The ICMP Group 

  Implementation of the ICMP group is mandatory for all systems.

  The ICMP group contains the ICMP input and output statistics.

  Note that individual counters for ICMP message (sub-)codes have been
  omitted from this (version of the) MIB for simplicity.



         OBJECT:
         -------
              icmpInMsgs { icmp 1 }

         Syntax:
              Counter

         Definition:
              The total number of ICMP messages which the entity
              received.  Note that this counter includes all those
              counted by icmpInErrors.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpInErrors { icmp 2 }

         Syntax:
              Counter

         Definition:
              The number of ICMP messages which the entity received but
              determined as having errors (bad ICMP checksums, bad
              length, etc.).

         Access:
              read-only.

         Status:
              mandatory.



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         OBJECT:
         -------
             icmpInDestUnreachs { icmp 3 }

         Syntax:
             Counter

         Definition:
              The number of ICMP Destination Unreachable messages
              received.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpInTimeExcds { icmp 4 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Time Exceeded messages received.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpInParmProbs { icmp 5 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Parameter Problem messages received.

         Access:
              read-only.



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         Status:
              mandatory.



         OBJECT:
         -------
              icmpInSrcQuenchs { icmp 6 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Source Quench messages received.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpInRedirects { icmp 7 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Redirect messages received.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpInEchos { icmp 8 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Echo (request) messages received.



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         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpInEchoReps { icmp 9 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Echo Reply messages received.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpInTimestamps { icmp 10 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Timestamp (request) messages received.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpInTimestampReps { icmp 11 }

         Syntax:
              Counter



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         Definition:
              The number of ICMP Timestamp Reply messages received.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpInAddrMasks { icmp 12 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Address Mask Request messages
              received.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpInAddrMaskReps { icmp 13 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Address Mask Reply messages received.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpOutMsgs { icmp 14 }


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         Syntax:
              Counter

         Definition:
              The total number of ICMP messages which this entity
              attempted to send.  Note that this counter includes all
              those counted by icmpOutErrors.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpOutErrors { icmp 15 }

         Syntax:
              Counter

         Definition:
              The number of ICMP messages which this entity did not
              send due to problems discovered within ICMP such as a
              lack of buffers.  This value should not include errors
              discovered outside the ICMP layer such as the inability
              of IP to route the resultant datagram.  In some
              implementations there may be no types of error which
              contribute to this counter's value.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpOutDestUnreachs { icmp 16 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Destination Unreachable messages sent.



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RFC 1156 MIB May 1990 


         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpOutTimeExcds { icmp 17 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Time Exceeded messages sent.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpOutParmProbs { icmp 18 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Parameter Problem messages sent.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpOutSrcQuenchs { icmp 19 }

         Syntax:
              Counter



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         Definition:
              The number of ICMP Source Quench messages sent.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpOutRedirects { icmp 20 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Redirect messages sent.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpOutEchos { icmp 21 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Echo (request) messages sent.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpOutEchoReps { icmp 22 }



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         Syntax:
              Counter

         Definition:
              The number of ICMP Echo Reply messages sent.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpOutTimestamps { icmp 23 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Timestamp (request) messages sent.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpOutTimestampReps { icmp 24 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Timestamp Reply messages sent.

         Access:
              read-only.

         Status:
              mandatory.




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         OBJECT:
         -------
              icmpOutAddrMasks { icmp 25 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Address Mask Request messages sent.

         Access:
              read-only.

         Status:
              mandatory.



         OBJECT:
         -------
              icmpOutAddrMaskReps { icmp 26 }

         Syntax:
              Counter

         Definition:
              The number of ICMP Address Mask Reply messages sent.

         Access:
              read-only.

         Status:
              mandatory.










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RFC 1156 MIB May 1990


5.6. The TCP Group 

  Implementation of the TCP group is mandatory for all systems
  that implement the TCP protocol.

  Note that instances of object types that represent information
  about a particular TCP connection are transient; they persist
  only as long as the connection in question.

            OBJECT:
            -------
                 tcpRtoAlgorithm { tcp 1 }

            Syntax:
                 INTEGER {
                      other(1),    -- none of the following
                      constant(2), -- a constant rto
                      rsre(3),     -- MIL-STD-1778, Appendix B
                      vanj(4)      -- Van Jacobson's algorithm [15]
                 }

            Definition:
                 The algorithm used to determine the timeout value used
                 for retransmitting unacknowledged octets.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpRtoMin { tcp 2 }

            Syntax:
                 INTEGER

            Definition:
                 The minimum value permitted by a TCP implementation
                 for the retransmission timeout, measured in
                 milliseconds.  More refined semantics for objects
                 of this type depend upon the algorithm used to
                 determine the retransmission timeout.  In particular,
                 when the timeout algorithm is rsre(3), an object
                 of this type has the semantics of the LBOUND
                 quantity described in RFC 793.


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            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpRtoMax { tcp 3 }

            Syntax:
                 INTEGER

            Definition:
                 The maximum value permitted by a TCP implementation
                 for the retransmission timeout, measured
                 in milliseconds.  More refined semantics for objects
                 of this type depend upon the algorithm used to
                 determine the retransmission timeout.  In particular,
                 when the timeout algorithm is rsre(3), an object of
                 this type has the semantics of the UBOUND quantity
                 described in RFC 793.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpMaxConn { tcp 4 }

            Syntax:
                 INTEGER

            Definition:
                 The limit on the total number of TCP connections the
                 entity can support.  In entities where the maximum
                 number of connections is dynamic, this object should
                 contain the value "-1".

            Access:
                 read-only.



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            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpActiveOpens { tcp 5 }

            Syntax:
                 Counter

            Definition:
                 The number of times TCP connections have made a direct
                 transition to the SYN-SENT state from the CLOSED
                 state.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpPassiveOpens { tcp 6 }

            Syntax:
                 Counter

            Definition:
                 The number of times TCP connections have made a direct
                 transition to the SYN-RCVD state from the LISTEN
                 state.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpAttemptFails { tcp 7 }

            Syntax:
                 Counter


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            Definition:
                 The number of times TCP connections have made a direct
                 transition to the CLOSED state from either the
                 SYN-SENT state or the SYN-RCVD state, plus the number
                 of times TCP connections have made a direct transition
                 to the LISTEN state from the SYN-RCVD state.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpEstabResets { tcp 8 }

            Syntax:
                 Counter

            Definition:
                 The number of times TCP connections have made a direct
                 transition to the CLOSED state from either the
                 ESTABLISHED state or the CLOSE-WAIT state.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpCurrEstab { tcp 9 }

            Syntax:
                 Gauge

            Definition:
                 The number of TCP connections for which the current
                 state is either ESTABLISHED or CLOSE-WAIT.

            Access:
                 read-only.



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            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpInSegs { tcp 10 }

            Syntax:
                 Counter

            Definition:
                 The total number of segments received, including those
                 received in error.  This count includes segments
                 received on currently established connections.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpOutSegs { tcp 11 }

            Syntax:
                 Counter

            Definition:
                 The total number of segments sent, including those on
                 current connections but excluding those containing
                 only retransmitted octets.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpRetransSegs { tcp 12 }

            Syntax:
                 Counter


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RFC 1156 MIB May 1990 


            Definition:
                 The total number of segments retransmitted - that is,
                 the number of TCP segments transmitted containing one
                 or more previously transmitted octets.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpConnTable { tcp 13 }

            Syntax:
                 SEQUENCE OF TcpConnEntry

            Definition:
                 A table containing TCP connection-specific
                 information.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpConnEntry { tcpConnTable 1 }

            Syntax:
                 TcpConnEntry ::= SEQUENCE {
                      tcpConnState
                          INTEGER,
                      tcpConnLocalAddress
                          IpAddress,
                      tcpConnLocalPort
                          INTEGER (0..65535),
                      tcpConnRemAddress
                          IpAddress,
                      tcpConnRemPort
                          INTEGER (0..65535)
                 }



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            Definition:
                 Information about a particular current TCP connection.
                 An object of this type is transient, in that it ceases
                 to exist when (or soon after) the connection makes the
                 transition to the CLOSED state.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpConnState { tcpConnEntry 1 }

            Syntax:
                 INTEGER {
                      closed(1),
                      listen(2),
                      synSent(3),
                      synReceived(4),
                      established(5),
                      finWait1(6),
                      finWait2(7),
                      closeWait(8),
                      lastAck(9),
                      closing(10),
                      timeWait(11)
                 }

            Definition:
                 The state of this TCP connection.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpConnLocalAddress { tcpConnEntry 2 }

            Syntax:
                 IpAddress


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            Definition:
                 The local IP address for this TCP connection.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpConnLocalPort { tcpConnEntry 3 }

            Syntax:
                 INTEGER (0..65535)

            Definition:
                 The local port number for this TCP connection.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpConnRemAddress { tcpConnEntry 4 }

            Syntax:
                 IpAddress

            Definition:
                 The remote IP address for this TCP connection.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 tcpConnRemPort { tcpConnEntry 5 }



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            Syntax:
                 INTEGER (0..65535)

            Definition:
                 The remote port number for this TCP connection.

            Access:
                 read-only.

            Status:
                 mandatory.





















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RFC 1156 MIB May 1990


5.7. The UDP Group 

  Implementation of the UDP group is mandatory for all systems
  which implement the UDP protocol.

            OBJECT:
            -------
                 udpInDatagrams { udp 1 }

            Syntax:
                 Counter

            Definition:
                 The total number of UDP datagrams delivered to UDP
                 users.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 udpNoPorts { udp 2 }

            Syntax:
                 Counter

            Definition:
                 The total number of received UDP datagrams for which
                 there was no application at the destination port.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 udpInErrors { udp 3 }

            Syntax:
                 Counter



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            Definition:
                 The number of received UDP datagrams that could not be
                 delivered for reasons other than the lack of an
                 application at the destination port.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 udpOutDatagrams { udp 4 }

            Syntax:
                 Counter

            Definition:
                 The total number of UDP datagrams sent from this
                 entity.

            Access:
                 read-only.

            Status:
                 mandatory.












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RFC 1156 MIB May 1990


5.8. The EGP Group 

  Implementation of the EGP group is mandatory for all systems
  which implement the EGP protocol.

            OBJECT:
            -------
                 egpInMsgs { egp 1 }

            Syntax:
                 Counter

            Definition:
                 The number of EGP messages received without error.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 egpInErrors { egp 2 }

            Syntax:
                 Counter

            Definition:
                 The number of EGP messages received that proved to be
                 in error.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 egpOutMsgs { egp 3 }

            Syntax:
                 Counter



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            Definition:
                 The total number of locally generated EGP messages.

            Access:
                 read-only.

            Status:
                 mandatory.



            OBJECT:
            -------
                 egpOutErrors { egp 4 }

            Syntax:
                 Counter

            Definition:
                 The number of locally generated EGP messages not sent
                 due to resource limitations within an EGP entity.

            Access:
                 read-only.

            Status:
                 mandatory.

5.8.1. The EGP Neighbor Table 

  The Egp Neighbor table contains information about this entity's EGP
  neighbors.



            OBJECT:
            -------
                 egpNeighTable { egp 5 }

            Syntax:
                 SEQUENCE OF EgpNeighEntry

            Definition:
                 The EGP neighbor table.

            Access:
                 read-only.

            Status:
                 mandatory.


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            OBJECT:
            -------
                 egpNeighEntry { egpNeighTable 1 }

            Syntax:
                 EgpNeighEntry ::= SEQUENCE {
                      egpNeighState
                          INTEGER,
                      egpNeighAddr
                          IpAddress
                 }

            Definition:
                 Information about this entity's relationship with a
                 particular EGP neighbor.

            Access:
                 read-only.

            Status:
                 mandatory.



            We now consider the individual components of each EGP
            neighbor entry:



            OBJECT:
            -------
                 egpNeighState { egpNeighEntry 1 }

            Syntax:
                 INTEGER {
                      idle(1),
                      acquisition(2),
                      down(3),
                      up(4),
                      cease(5)
                 }

            Definition:
                 The EGP state of the local system with respect to this
                 entry's EGP neighbor.  Each EGP state is represented
                 by a value that is one greater than the numerical
                 value associated with said state in RFC 904.

            Access:
                 read-only.


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            Status:
                 mandatory.



            OBJECT:
            -------
                 egpNeighAddr { egpNeighEntry 2 }

            Syntax:
                 IpAddress

            Definition:
                 The IP address of this entry's EGP neighbor.

            Access:
                 read-only.

            Status:
                 mandatory.

















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RFC 1156 MIB May 1990


6. Definitions 

               RFC1156-MIB

               DEFINITIONS ::= BEGIN

               IMPORTS
                       mgmt, OBJECT-TYPE, NetworkAddress, IpAddress,
                       Counter, Gauge, TimeTicks
                           FROM RFC1155-SMI;

                 mib        OBJECT IDENTIFIER ::= { mgmt 1 }

                 system     OBJECT IDENTIFIER ::= { mib 1 }
                 interfaces OBJECT IDENTIFIER ::= { mib 2 }
                 at         OBJECT IDENTIFIER ::= { mib 3 }
                 ip         OBJECT IDENTIFIER ::= { mib 4 }
                 icmp       OBJECT IDENTIFIER ::= { mib 5 }
                 tcp        OBJECT IDENTIFIER ::= { mib 6 }
                 udp        OBJECT IDENTIFIER ::= { mib 7 }
                 egp        OBJECT IDENTIFIER ::= { mib 8 }

                 -- object types

                 -- the System group

                 sysDescr OBJECT-TYPE
                         SYNTAX  OCTET STRING
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { system 1 }

                 sysObjectID OBJECT-TYPE
                         SYNTAX  OBJECT IDENTIFIER
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { system 2 }

                 sysUpTime OBJECT-TYPE
                         SYNTAX  TimeTicks
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { system 3 }

                 -- the Interfaces group

                 ifNumber OBJECT-TYPE
                         SYNTAX  INTEGER


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                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { interfaces 1 }

                 -- the Interfaces table

                 ifTable OBJECT-TYPE
                         SYNTAX  SEQUENCE OF IfEntry
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { interfaces 2 }

                 ifEntry OBJECT-TYPE
                         SYNTAX  IfEntry
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { ifTable 1 }

                 IfEntry ::= SEQUENCE {
                     ifIndex
                         INTEGER,
                     ifDescr
                         OCTET STRING,
                     ifType
                         INTEGER,
                     ifMtu
                         INTEGER,
                     ifSpeed
                         Gauge,
                     ifPhysAddress
                         OCTET STRING,
                     ifAdminStatus
                         INTEGER,
                     ifOperStatus
                         INTEGER,
                     ifLastChange
                         TimeTicks,
                     ifInOctets
                         Counter,
                     ifInUcastPkts
                         Counter,
                     ifInNUcastPkts
                         Counter,
                     ifInDiscards
                         Counter,
                     ifInErrors
                         Counter,
                     ifInUnknownProtos


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                         Counter,
                     ifOutOctets
                         Counter,
                     ifOutUcastPkts
                         Counter,
                     ifOutNUcastPkts
                         Counter,
                     ifOutDiscards
                         Counter,
                     ifOutErrors
                         Counter,
                     ifOutQLen
                         Gauge
                 }

                 ifIndex OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 1 }

                 ifDescr OBJECT-TYPE
                         SYNTAX  OCTET STRING
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 2 }

                 ifType OBJECT-TYPE
                         SYNTAX  INTEGER {
                                 other(1),     -- none of the following
                                 regular1822(2),
                                 hdh1822(3),
                                 ddn-x25(4),
                                 rfc877-x25(5),
                                 ethernet-csmacd(6),
                                 iso88023-csmacd(7),
                                 iso88024-tokenBus(8),
                                 iso88025-tokenRing(9),
                                 iso88026-man(10),
                                 starLan(11),
                                 proteon-10MBit(12),
                                 proteon-80MBit(13),
                                 hyperchannel(14),
                                 fddi(15),
                                 lapb(16),
                                 sdlc(17),
                                 t1-carrier(18),
                                 cept(19),


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                                 basicIsdn(20),
                                 primaryIsdn(21),
                                                  -- proprietary serial
                                 propPointToPointSerial(22)
                             }
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 3 }

                 ifMtu OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 4 }

                 ifSpeed OBJECT-TYPE
                         SYNTAX  Gauge
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 5 }

                 ifPhysAddress OBJECT-TYPE
                         SYNTAX  OCTET STRING
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 6 }

                 ifAdminStatus OBJECT-TYPE
                         SYNTAX  INTEGER {
                                 up(1),        -- ready to pass packets
                                 down(2),
                                 testing(3)    -- in some test mode
                                 }
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { ifEntry 7 }

                 ifOperStatus OBJECT-TYPE
                         SYNTAX  INTEGER {
                                 up(1),        -- ready to pass packets
                                 down(2),
                                 testing(3)    -- in some test mode
                                 }
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 8 }

                 ifLastChange OBJECT-TYPE


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                         SYNTAX  TimeTicks
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 9 }

                 ifInOctets OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 10 }

                 ifInUcastPkts OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::=  { ifEntry 11 }

                 ifInNUcastPkts OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 12 }

                 ifInDiscards OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 13 }

                 ifInErrors OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 14 }

                 ifInUnknownProtos OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 15 }

                 ifOutOctets OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 16 }

                 ifOutUcastPkts OBJECT-TYPE


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                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 17 }

                 ifOutNUcastPkts OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 18 }

                 ifOutDiscards OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 19 }

                 ifOutErrors OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 20 }

                 ifOutQLen OBJECT-TYPE
                         SYNTAX  Gauge
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ifEntry 21 }

                 -- the Address Translation group

                 atTable OBJECT-TYPE
                         SYNTAX  SEQUENCE OF AtEntry
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { at 1 }

                 atEntry OBJECT-TYPE
                         SYNTAX  AtEntry
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { atTable 1 }

                 AtEntry ::= SEQUENCE {
                     atIfIndex
                         INTEGER,
                     atPhysAddress
                         OCTET STRING,


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                     atNetAddress
                         NetworkAddress
                 }

                 atIfIndex OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { atEntry 1 }

                 atPhysAddress OBJECT-TYPE
                         SYNTAX  OCTET STRING
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { atEntry 2 }

                 atNetAddress OBJECT-TYPE
                         SYNTAX  NetworkAddress
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { atEntry 3 }

                 -- the IP group

                 ipForwarding OBJECT-TYPE
                         SYNTAX  INTEGER {
                       gateway(1), -- entity forwards datagrams
                       host(2)     -- entity does NOT forward datagrams
                                 }
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 1 }

                 ipDefaultTTL OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { ip 2 }

                 ipInReceives OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 3 }

                 ipInHdrErrors OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only


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                         STATUS  mandatory
                         ::= { ip 4 }

                 ipInAddrErrors OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 5 }

                 ipForwDatagrams OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 6 }

                 ipInUnknownProtos OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 7 }

                 ipInDiscards OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 8 }

                 ipInDelivers OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 9 }

                 ipOutRequests OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 10 }

                 ipOutDiscards OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 11 }

                 ipOutNoRoutes OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only


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                         STATUS  mandatory
                         ::= { ip 12 }

                 ipReasmTimeout OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 13 }

                 ipReasmReqds OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 14 }

                 ipReasmOKs OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 15 }

                 ipReasmFails OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 16 }

                 ipFragOKs OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 17 }

                 ipFragFails OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 18 }

                 ipFragCreates OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 19 }

                 -- the IP Interface table

                 ipAddrTable OBJECT-TYPE


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                         SYNTAX  SEQUENCE OF IpAddrEntry
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ip 20 }

                 ipAddrEntry OBJECT-TYPE
                         SYNTAX  IpAddrEntry
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ipAddrTable 1 }

                 IpAddrEntry ::= SEQUENCE {
                     ipAdEntAddr
                         IpAddress,
                     ipAdEntIfIndex
                         INTEGER,
                     ipAdEntNetMask
                         IpAddress,
                     ipAdEntBcastAddr
                         INTEGER
                 }

                 ipAdEntAddr OBJECT-TYPE
                         SYNTAX  IpAddress
                         ACCESS  read-only
                         STATUS  mandatory
                         ::=  { ipAddrEntry 1 }

                 ipAdEntIfIndex OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-only
                         STATUS  mandatory
                         ::=  { ipAddrEntry 2 }

                 ipAdEntNetMask OBJECT-TYPE
                         SYNTAX  IpAddress
                         ACCESS  read-only
                         STATUS  mandatory
                         ::=  { ipAddrEntry 3 }

                 ipAdEntBcastAddr OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ipAddrEntry 4 }




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                 -- the IP Routing table

                 ipRoutingTable OBJECT-TYPE
                         SYNTAX  SEQUENCE OF IpRouteEntry
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { ip 21 }

                 ipRouteEntry OBJECT-TYPE
                         SYNTAX  IpRouteEntry
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { ipRoutingTable 1 }

                 IpRouteEntry ::= SEQUENCE {
                     ipRouteDest
                         IpAddress,
                     ipRouteIfIndex
                         INTEGER,
                     ipRouteMetric1
                         INTEGER,
                     ipRouteMetric2
                         INTEGER,
                     ipRouteMetric3
                         INTEGER,
                     ipRouteMetric4
                         INTEGER,
                     ipRouteNextHop
                         IpAddress,
                     ipRouteType
                         INTEGER,
                     ipRouteProto
                         INTEGER,
                     ipRouteAge
                         INTEGER
                 }

                 ipRouteDest OBJECT-TYPE
                         SYNTAX  IpAddress
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { ipRouteEntry 1 }

                 ipRouteIfIndex  OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { ipRouteEntry 2 }


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                 ipRouteMetric1 OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { ipRouteEntry 3 }

                 ipRouteMetric2 OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { ipRouteEntry 4 }

                 ipRouteMetric3 OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { ipRouteEntry 5 }

                 ipRouteMetric4 OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { ipRouteEntry 6 }

                 ipRouteNextHop OBJECT-TYPE
                         SYNTAX  IpAddress
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { ipRouteEntry 7 }

                 ipRouteType OBJECT-TYPE
                         SYNTAX  INTEGER {
                           other(1),      -- none of the following

                           invalid(2),    -- an invalidated route

                                          -- route to directly
                           direct(3),     -- connected (sub-)network

                                          -- route to a non-local
                           remote(4),     -- host/network/sub-network
                             }
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { ipRouteEntry 8 }

                 ipRouteProto OBJECT-TYPE
                         SYNTAX  INTEGER {


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                           other(1),     -- none of the following

                                         -- non-protocol information
                                         --   e.g., manually
                           local(2),     --   configured entries

                                         -- set via a network
                           netmgmt(3),   --   management protocol

                                         -- obtained via ICMP,
                           icmp(4),      --   e.g., Redirect

                                         -- the following are
                                         -- gateway routing protocols
                           egp(5),
                           ggp(6),
                           hello(7),
                           rip(8),
                           is-is(9),
                           es-is(10),
                           ciscoIgrp(11),
                           bbnSpfIgp(12),
                           oigp(13)
                             }
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { ipRouteEntry 9 }

                 ipRouteAge OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-write
                         STATUS  mandatory
                         ::= { ipRouteEntry 10 }

                 -- the ICMP group

                 icmpInMsgs OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 1 }

                 icmpInErrors OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 2 }



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                 icmpInDestUnreachs OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 3 }

                 icmpInTimeExcds OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 4 }

                 icmpInParmProbs OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 5 }

                 icmpInSrcQuenchs OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 6 }

                 icmpInRedirects OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 7 }

                 icmpInEchos OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 8 }

                 icmpInEchoReps OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 9 }

                 icmpInTimestamps OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 10 }



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                 icmpInTimestampReps OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 11 }

                 icmpInAddrMasks OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 12 }

                 icmpInAddrMaskReps OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 13 }

                 icmpOutMsgs OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 14 }

                 icmpOutErrors OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 15 }

                 icmpOutDestUnreachs OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 16 }

                 icmpOutTimeExcds OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 17 }

                 icmpOutParmProbs OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 18 }



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                 icmpOutSrcQuenchs OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 19 }

                 icmpOutRedirects OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 20 }

                 icmpOutEchos OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 21 }

                 icmpOutEchoReps OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 22 }

                 icmpOutTimestamps OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 23 }

                 icmpOutTimestampReps OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 24 }

                 icmpOutAddrMasks OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 25 }

                 icmpOutAddrMaskReps OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { icmp 26 }



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RFC 1156 MIB May 1990 


                 -- the TCP group

                 tcpRtoAlgorithm OBJECT-TYPE
                         SYNTAX  INTEGER {
                         other(1),    -- none of the following
                         constant(2), -- a constant rto
                         rsre(3),     -- MIL-STD-1778, Appendix B
                         vanj(4)      -- Van Jacobson's algorithm [15]
                                 }
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcp 1 }

                 tcpRtoMin OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcp 2 }

                 tcpRtoMax OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcp 3 }

                 tcpMaxConn OBJECT-TYPE
                         SYNTAX  INTEGER
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcp 4 }

                 tcpActiveOpens OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcp 5 }

                 tcpPassiveOpens OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcp 6 }

                 tcpAttemptFails OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcp 7 }


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RFC 1156 MIB May 1990 


                 tcpEstabResets OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcp 8 }

                 tcpCurrEstab OBJECT-TYPE
                         SYNTAX  Gauge
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcp 9 }

                 tcpInSegs OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcp 10 }

                 tcpOutSegs OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcp 11 }

                 tcpRetransSegs OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcp 12 }

                 -- the TCP connections table

                 tcpConnTable OBJECT-TYPE
                         SYNTAX  SEQUENCE OF TcpConnEntry
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcp 13 }

                 tcpConnEntry OBJECT-TYPE
                         SYNTAX  TcpConnEntry
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcpConnTable 1 }

                 TcpConnEntry ::= SEQUENCE {
                     tcpConnState
                         INTEGER,
                     tcpConnLocalAddress


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RFC 1156 MIB May 1990 


                         IpAddress,
                     tcpConnLocalPort
                         INTEGER (0..65535),
                     tcpConnRemAddress
                         IpAddress,
                     tcpConnRemPort
                         INTEGER (0..65535)
                 }

                 tcpConnState OBJECT-TYPE
                         SYNTAX  INTEGER {
                                     closed(1),
                                     listen(2),
                                     synSent(3),
                                     synReceived(4),
                                     established(5),
                                     finWait1(6),
                                     finWait2(7),
                                     closeWait(8),
                                     lastAck(9),
                                     closing(10),
                                     timeWait(11)
                                 }
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcpConnEntry 1 }

                 tcpConnLocalAddress OBJECT-TYPE
                         SYNTAX  IpAddress
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcpConnEntry 2 }

                 tcpConnLocalPort OBJECT-TYPE
                         SYNTAX  INTEGER (0..65535)
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcpConnEntry 3 }

                 tcpConnRemAddress OBJECT-TYPE
                         SYNTAX  IpAddress
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { tcpConnEntry 4 }

                 tcpConnRemPort OBJECT-TYPE
                         SYNTAX  INTEGER (0..65535)
                         ACCESS  read-only


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RFC 1156 MIB May 1990 


                         STATUS  mandatory
                         ::= { tcpConnEntry 5 }

                 -- the UDP group

                 udpInDatagrams OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { udp 1 }

                 udpNoPorts OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { udp 2 }

                 udpInErrors OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { udp 3 }

                 udpOutDatagrams OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { udp 4 }

                 -- the EGP group

                 egpInMsgs OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { egp 1 }

                 egpInErrors OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { egp 2 }

                 egpOutMsgs OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { egp 3 }


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RFC 1156 MIB May 1990 


                 egpOutErrors OBJECT-TYPE
                         SYNTAX  Counter
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { egp 4 }

                 -- the EGP Neighbor table

                 egpNeighTable OBJECT-TYPE
                         SYNTAX  SEQUENCE OF EgpNeighEntry
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { egp 5 }

                 egpNeighEntry OBJECT-TYPE
                         SYNTAX  EgpNeighEntry
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { egpNeighTable 1 }

                 EgpNeighEntry ::= SEQUENCE {
                     egpNeighState
                         INTEGER,
                     egpNeighAddr
                         IpAddress
                 }

                 egpNeighState OBJECT-TYPE
                         SYNTAX  INTEGER {
                                     idle(1),
                                     acquisition(2),
                                     down(3),
                                     up(4),
                                     cease(5)
                                 }
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { egpNeighEntry 1 }

                 egpNeighAddr OBJECT-TYPE
                         SYNTAX  IpAddress
                         ACCESS  read-only
                         STATUS  mandatory
                         ::= { egpNeighEntry 2 }

                 END



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RFC 1156 MIB May 1990


7. Acknowledgements 

  The initial draft of this memo was heavily influenced by the the HEMS
  [9] and SNMP [10] MIBs.

  Its final form is the result of the suggestions, the dicussions, and
  the compromises reached by the members of the IETF MIB working group:

        Karl Auerbach, Epilogue Technology
        K. Ramesh Babu, Excelan
        Lawrence Besaw, Hewlett-Packard
        Jeffrey D. Case, University of Tennessee at Knoxville
        James R. Davin, Proteon
        Mark S. Fedor, NYSERNet
        Robb Foster, BBN
        Phill Gross, The MITRE Corporation
        Bent Torp Jensen, Convergent Technology
        Lee Labarre, The MITRE Corporation
        Dan Lynch, Advanced Computing Environments
        Keith McCloghrie, The Wollongong Group
        Dave Mackie, 3Com/Bridge
        Craig Partridge, BBN (chair)
        Jim Robertson, 3Com/Bridge
        Marshall T. Rose, The Wollongong Group
        Greg Satz, cisco
        Martin Lee Schoffstall, Rensselaer Polytechnic Institute
        Lou Steinberg, IBM
        Dean Throop, Data General
        Unni Warrier, Unisys












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RFC 1156 MIB May 1990


8. References 

  [1]  Cerf, V., "IAB Recommendations for the Development of Internet
       Network Management Standards", RFC 1052, IAB, April 1988.

  [2]  Information processing systems - Open Systems Interconnection,
       "Management Information Services Definition", International
       Organization for Standardization, Draft Proposal 9595/2,
       December 1987.

  [3]  Information processing systems - Open Systems Interconnection,
       "Management Information Protocol Specification", International
       Organization for Standardization, Draft Proposal 9596/2,
       December 1987.

  [4]  Rose M., and K. McCloghrie, "Structure and Identification of
       Management Information for TCP/IP-based internets", RFC 1065,
       TWG, August 1988.

  [5]  Partridge C., and G. Trewitt, "The High-Level Entity Management
       System (HEMS)", RFCs 1021-1024, BBN and Stanford, October 1987.

  [6]  Cerf, V., "Report of the Second Ad Hoc Network Management Review
       Group", RFC 1109, IAB, August 1989.

  [7]  Rose, M., and K. McCloghrie, "Structure and Identification of
       Management Information for TCP/IP-based Internets", RFC 1155,
       Performance Systems International and Hughes LAN Systems, May
       1990.

  [8]  Case, J., M. Fedor, M. Schoffstall, and J. Davin, The Simple
       Network Management Protocol", RFC 1157, University of Tennessee
       at Knoxville, Performance Systems International, Performance
       Systems International, and the MIT Laboratory for Computer
       Science, May 1990.

  [9]  Partridge C., and G. Trewitt, "HEMS Variable Definitions", RFC
       1024, BBN and Stanford, October 1987.

 [10]  Case, J., M. Fedor, M. Schoffstall, and J. Davin, "A Simple
       Network Management Protocol", RFC 1067, University of Tennessee
       At Knoxville, NYSERNet, Rensselaer Polytechnic, Proteon, August
       1988.

 [11]  LaBarre, L., "Structure and Identification of Management
       Information for the Internet", Internet Engineering Task Force
       working note, Network Information Center, SRI International,
       Menlo Park, California, April 1988.


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RFC 1156 MIB May 1990 


 [12]  LaBarre, L., "Transport Layer Management Information:  TCP",
       Internet Engineering Task Force working note in preparation.
       Network Information Center, SRI International, Menlo Park,
       California, (unpublished).

 [13]  Information processing systems - Open Systems Interconnection,
       "Specification of Abstract Syntax Notation One (ASN.1)",
       International Organization for Standardization, International
       Standard 8824, December 1987.

 [14]  Information processing systems - Open Systems Interconnection,
       "Specification of Basic Encoding Rules for Abstract Notation One
       (ASN.1)", International Organization for Standardization,
       International Standard 8825, December 1987.

 [15]  Jacobson, V., "Congestion Avoidance and Control", SIGCOMM, 1988,
       Stanford, California.

Security Considerations 

  Security issues are not discussed in this memo.

Authors' Addresses 

  Keith McCloghrie
  The Wollongong Group
  1129 San Antonio Road
  Palo Alto, CA 04303

  Phone: (415) 962-7160

  EMail: [email protected]



  Marshall T. Rose
  PSI, Inc.
  PSI California Office
  P.O. Box 391776
  Mountain View, CA 94039

  Phone: (415) 961-3380

  EMail: [email protected]





McCloghrie & Rose

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