RFC2742
Network Working Group L. Heintz Request For Comments: 2742 Cisco Systems Category: Standards Track S. Gudur
Independent Consultant
M. Ellison, Ed.
Ellison Software Consulting, Inc.
January 2000
Definitions of Managed Objects for Extensible SNMP Agents
Status of this Memo
This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2000). All Rights Reserved.
Abstract
This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes objects managing SNMP agents that use the Agent Extensibility (AgentX) Protocol.
This memo specifies a MIB module in a manner that is both compliant to the SMIv2, and semantically identical to the peer SMIv1 definitions.
Contents
The SNMP Management Framework
The SNMP Management Framework presently consists of five major components:
- An overall architecture, described in RFC 2571 [1].
- Mechanisms for describing and naming objects and events for the
purpose of management. The first version of this Structure of Management Information (SMI) is called SMIv1 and described in STD 16, RFC 1155 [2], STD 16, RFC 1212 [3] and RFC 1215 [4]. The second version, called SMIv2, is described in STD 58, RFC 2578 [5], STD 58, RFC 2579 [6] and STD 58, RFC 2580 [7].
- Message protocols for transferring management information. The
first version of the SNMP message protocol is called SNMPv1 and described in STD 15, RFC 1157 [8]. A second version of the SNMP message protocol, which is not an Internet standards track protocol, is called SNMPv2c and described in RFC 1901 [9] and RFC 1906 [10]. The third version of the message protocol is called SNMPv3 and described in RFC 1906 [10], RFC 2572 [11] and RFC 2574 [12].
- Protocol operations for accessing management information. The
first set of protocol operations and associated PDU formats is described in STD 15, RFC 1157 [8]. A second set of protocol operations and associated PDU formats is described in RFC 1905 [13].
- A set of fundamental applications described in RFC 2573 [14] and
the view-based access control mechanism described in RFC 2575 [15].
A more detailed introduction to the current SNMP Management Framework can be found in RFC 2570 [16].
Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. Objects in the MIB are defined using the mechanisms defined in the SMI.
This memo specifies a MIB module that is compliant to the SMIv2. A MIB conforming to the SMIv1 can be produced through the appropriate translations. The resulting translated MIB must be semantically equivalent, except where objects or events are omitted because no translation is possible (use of Counter64). Some machine readable information in SMIv2 will be converted into textual descriptions in
SMIv1 during the translation process. However, this loss of machine readable information is not considered to change the semantics of the MIB.
Introduction
The SNMP Agent Extensibility Protocol (AgentX) is a protocol used to distribute the implementation of an SNMP agent amongst a single "master agent" and multiple "subagents". See [17] for details about the AgentX protocol.
The goals of the AgentX MIB are:
- List the set of subagent connections that currently have logical
sessions open with the master agent.
- Identify each subagent connection transport address and type.
- Identify each subagent session vendor, AgentX protocol version,
and other characteristics.
- Identify the set of MIB objects each session implements, the
context in which the objects are registered, and the priority of the registration.
- Determine protocol operational parameters such as the timeout
interval for responses from a session and the priority at which a session registers a particular MIB region.
- Allow (but do not require) managers to explicitly close subagent
sessions with the master agent.
AgentX MIB Overview
This MIB is organized into four groups. The agentxGeneral group provides information describing the master agent's AgentX support, including the protocol version supported. The agentxConnection group provides information describing the current set of connections capable of carrying AgentX sessions. The agentxSession group provides information describing the current set of AgentX sessions. The agentxRegistration group provides information describing the current set of registrations.
Three tables form the heart of this mib. These are the connection, session, and registration tables.
Entries in the registration table exist in a many-to-one relationship with entries in the session table. This relationship is expressed through the two common indices, agentxSessionIndex and agentxConnIndex. Entries in the registration table also exist in a many-to-one relationship with entries in the connection table. This relationship is expressed through the common index, agentxConnIndex.
Entries in the session table exist in a many-to-one relationship with entries in the connection table. This relationship is expressed through the common index, agentxConnIndex.
Managed Object Definitions for AgentX
AGENTX-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, Unsigned32, mib-2 FROM SNMPv2-SMI SnmpAdminString FROM SNMP-FRAMEWORK-MIB MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF TEXTUAL-CONVENTION, TimeStamp, TruthValue, TDomain FROM SNMPv2-TC;
agentxMIB MODULE-IDENTITY
LAST-UPDATED "200001100000Z" -- Midnight 10 January 2000 ORGANIZATION "AgentX Working Group" CONTACT-INFO "WG-email: [email protected] Subscribe: [email protected] WG-email Archive: ftp://ftp.peer.com/pub/agentx/archives FTP repository: ftp://ftp.peer.com/pub/agentx http://www.ietf.org/html.charters/agentx-charter.html
Chair: Bob Natale
ACE*COMM Corporation
Email: [email protected]
WG editor: Mark Ellison
Ellison Software Consulting, Inc.
Email: [email protected]
Co-author: Lauren Heintz
Cisco Systems,
EMail: [email protected]
Co-author: Smitha Gudur
Independent Consultant
Email: [email protected]
" DESCRIPTION "This is the MIB module for the SNMP Agent Extensibility Protocol (AgentX). This MIB module will be implemented by the master agent. "
REVISION "200001100000Z" -- Midnight 10 January 2000 DESCRIPTION "Initial version published as RFC 2742."
::= { mib-2 74 }
-- Textual Conventions
AgentxTAddress ::= TEXTUAL-CONVENTION
STATUS current DESCRIPTION
"Denotes a transport service address. This is identical to the TAddress textual convention (SNMPv2-SMI) except that zero-length values are permitted. "
SYNTAX OCTET STRING (SIZE (0..255))
-- Administrative assignments
agentxObjects OBJECT IDENTIFIER ::= { agentxMIB 1 }
agentxGeneral OBJECT IDENTIFIER ::= { agentxObjects 1 }
agentxConnection OBJECT IDENTIFIER ::= { agentxObjects 2 }
agentxSession OBJECT IDENTIFIER ::= { agentxObjects 3 }
agentxRegistration OBJECT IDENTIFIER ::= { agentxObjects 4 }
agentxDefaultTimeout OBJECT-TYPE SYNTAX INTEGER (0..255) UNITS "seconds" MAX-ACCESS read-only STATUS current DESCRIPTION "The default length of time, in seconds, that the master agent should allow to elapse after dispatching a message to a session before it regards the subagent as not responding. This is a system-wide value that may override the timeout value associated with a particular session (agentxSessionTimeout) or a particular registered MIB region (agentxRegTimeout). If the associated value of agentxSessionTimeout and agentxRegTimeout are zero, or impractical in accordance with implementation-specific procedure of the master agent, the value represented by this object will be the effective timeout value for the
master agent to await a response to a dispatch from a
given subagent.
"
DEFVAL { 5 }
::= { agentxGeneral 1 }
agentxMasterAgentXVer OBJECT-TYPE
SYNTAX INTEGER (1..255)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The AgentX protocol version supported by this master agent.
The current protocol version is 1. Note that the master agent
must also allow interaction with earlier version subagents.
"
::= { agentxGeneral 2 }
-- The AgentX Subagent Connection Group
agentxConnTableLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when the last row creation or deletion
occurred in the agentxConnectionTable.
"
::= { agentxConnection 1 }
agentxConnectionTable OBJECT-TYPE
SYNTAX SEQUENCE OF AgentxConnectionEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION
"The agentxConnectionTable tracks all current AgentX transport connections. There may be zero, one, or more AgentX sessions carried on a given AgentX connection. "
- = { agentxConnection 2 }
agentxConnectionEntry OBJECT-TYPE
SYNTAX AgentxConnectionEntry MAX-ACCESS not-accessible STATUS current
DESCRIPTION
"An agentxConnectionEntry contains information describing a single AgentX transport connection. A connection may be
used to support zero or more AgentX sessions. An entry is created when a new transport connection is established, and is destroyed when the transport connection is terminated. "
INDEX { agentxConnIndex }
- = { agentxConnectionTable 1 }
AgentxConnectionEntry ::= SEQUENCE {
agentxConnIndex Unsigned32,
agentxConnOpenTime TimeStamp,
agentxConnTransportDomain TDomain,
agentxConnTransportAddress AgentxTAddress }
agentxConnIndex OBJECT-TYPE
SYNTAX Unsigned32 (1..4294967295) MAX-ACCESS not-accessible STATUS current DESCRIPTION
"agentxConnIndex contains the value that uniquely identifies an open transport connection used by this master agent to provide AgentX service. Values of this index should not be re-used. The value assigned to a given transport connection is constant for the lifetime of that connection. "
- = { agentxConnectionEntry 1 }
agentxConnOpenTime OBJECT-TYPE
SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION
"The value of sysUpTime when this connection was established and, therefore, its value when this entry was added to the table. "
- = { agentxConnectionEntry 2 }
agentxConnTransportDomain OBJECT-TYPE
SYNTAX TDomain MAX-ACCESS read-only STATUS current DESCRIPTION
"The transport protocol in use for this connection to the subagent. "
- = { agentxConnectionEntry 3 }
agentxConnTransportAddress OBJECT-TYPE
SYNTAX AgentxTAddress
MAX-ACCESS read-only STATUS current DESCRIPTION
"The transport address of the remote (subagent) end of this connection to the master agent. This object may be zero-length for unix-domain sockets (and possibly other types of transport addresses) since the subagent need not bind a filename to its local socket. "
- = { agentxConnectionEntry 4 }
-- The AgentX Subagent Session Group
agentxSessionTableLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when the last row creation or deletion
occurred in the agentxSessionTable.
"
::= { agentxSession 1 }
agentxSessionTable OBJECT-TYPE
SYNTAX SEQUENCE OF AgentxSessionEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of AgentX subagent sessions currently in effect.
"
::= { agentxSession 2 }
agentxSessionEntry OBJECT-TYPE
SYNTAX AgentxSessionEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Information about a single open session between the AgentX
master agent and a subagent is contained in this entry. An
entry is created when a new session is successfully established
and is destroyed either when the subagent transport connection
has terminated or when the subagent session is closed.
"
INDEX { agentxConnIndex, agentxSessionIndex }
::= { agentxSessionTable 1 }
AgentxSessionEntry ::= SEQUENCE {
agentxSessionIndex Unsigned32,
agentxSessionObjectID OBJECT IDENTIFIER, agentxSessionDescr SnmpAdminString, agentxSessionAdminStatus INTEGER, agentxSessionOpenTime TimeStamp, agentxSessionAgentXVer INTEGER, agentxSessionTimeout INTEGER }
agentxSessionIndex OBJECT-TYPE
SYNTAX Unsigned32 (0..4294967295)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A unique index for the subagent session. It is the same as
h.sessionID defined in the agentx header. Note that if
a subagent's session with the master agent is closed for
any reason its index should not be re-used.
A value of zero(0) is specifically allowed in order
to be compatible with the definition of h.sessionId.
"
::= { agentxSessionEntry 1 }
agentxSessionObjectID OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This is taken from the o.id field of the agentx-Open-PDU.
This attribute will report a value of '0.0' for subagents
not supporting the notion of an AgentX session object
identifier.
"
::= { agentxSessionEntry 2 }
agentxSessionDescr OBJECT-TYPE SYNTAX SnmpAdminString MAX-ACCESS read-only STATUS current DESCRIPTION "A textual description of the session. This is analogous to sysDescr defined in the SNMPv2-MIB in RFC 1907 [19] and is taken from the o.descr field of the agentx-Open-PDU. This attribute will report a zero-length string value for subagents not supporting the notion of a session description. " ::= { agentxSessionEntry 3 }
agentxSessionAdminStatus OBJECT-TYPE
SYNTAX INTEGER {
up(1),
down(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The administrative (desired) status of the session. Setting
the value to 'down(2)' closes the subagent session (with c.reason
set to 'reasonByManager').
"
::= { agentxSessionEntry 4 }
agentxSessionOpenTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when this session was opened and,
therefore, its value when this entry was added to the table.
"
::= { agentxSessionEntry 5 }
agentxSessionAgentXVer OBJECT-TYPE
SYNTAX INTEGER (1..255)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The version of the AgentX protocol supported by the
session. This must be less than or equal to the value of
agentxMasterAgentXVer.
"
::= { agentxSessionEntry 6 }
agentxSessionTimeout OBJECT-TYPE SYNTAX INTEGER (0..255) UNITS "seconds" MAX-ACCESS read-only STATUS current DESCRIPTION "The length of time, in seconds, that a master agent should allow to elapse after dispatching a message to this session before it regards the subagent as not responding. This value is taken from the o.timeout field of the agentx-Open-PDU. This is a session-specific value that may be overridden by values associated with the specific registered MIB regions (see agentxRegTimeout). A value of zero(0) indicates that the master agent's default timeout value should be used
(see agentxDefaultTimeout).
"
::= { agentxSessionEntry 7 }
-- The AgentX Registration Group
agentxRegistrationTableLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when the last row creation or deletion
occurred in the agentxRegistrationTable.
"
::= { agentxRegistration 1 }
agentxRegistrationTable OBJECT-TYPE
SYNTAX SEQUENCE OF AgentxRegistrationEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of registered regions.
"
::= { agentxRegistration 2 }
agentxRegistrationEntry OBJECT-TYPE
SYNTAX AgentxRegistrationEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Contains information for a single registered region. An
entry is created when a session successfully registers a
region and is destroyed for any of three reasons: this region
is unregistered by the session, the session is closed,
or the subagent connection is closed.
"
INDEX { agentxConnIndex, agentxSessionIndex, agentxRegIndex }
::= { agentxRegistrationTable 1 }
AgentxRegistrationEntry ::= SEQUENCE {
agentxRegIndex Unsigned32,
agentxRegContext OCTET STRING,
agentxRegStart OBJECT IDENTIFIER,
agentxRegRangeSubId Unsigned32,
agentxRegUpperBound Unsigned32,
agentxRegPriority Unsigned32,
agentxRegTimeout INTEGER,
agentxRegInstance TruthValue }
agentxRegIndex OBJECT-TYPE
SYNTAX Unsigned32 (1..4294967295)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"agentxRegIndex uniquely identifies a registration entry.
This value is constant for the lifetime of an entry.
"
::= { agentxRegistrationEntry 1 }
agentxRegContext OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The context in which the session supports the objects in this
region. A zero-length context indicates the default context.
"
::= { agentxRegistrationEntry 2 }
agentxRegStart OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The starting OBJECT IDENTIFIER of this registration entry. The
session identified by agentxSessionIndex implements objects
starting at this value (inclusive). Note that this value could
identify an object type, an object instance, or a partial object
instance.
"
::= { agentxRegistrationEntry 3 }
agentxRegRangeSubId OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"agentxRegRangeSubId is used to specify the range. This is
taken from r.region_subid in the registration PDU. If the value
of this object is zero, no range is specified. If it is non-zero,
it identifies the `nth' sub-identifier in r.region for which
this entry's agentxRegUpperBound value is substituted in the
OID for purposes of defining the region's upper bound.
"
::= { agentxRegistrationEntry 4 }
agentxRegUpperBound OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"agentxRegUpperBound represents the upper-bound sub-identifier in
a registration. This is taken from the r.upper_bound in the
registration PDU. If agentxRegRangeSubid (r.region_subid) is
zero, this value is also zero and is not used to define an upper
bound for this registration.
"
::= { agentxRegistrationEntry 5 }
agentxRegPriority OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The registration priority. Lower values have higher priority.
This value is taken from r.priority in the register PDU.
Sessions should use the value of 127 for r.priority if a
default value is desired.
"
::= { agentxRegistrationEntry 6 }
agentxRegTimeout OBJECT-TYPE
SYNTAX INTEGER (0..255)
UNITS "seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The timeout value, in seconds, for responses to
requests associated with this registered MIB region.
A value of zero(0) indicates the default value (indicated
by by agentxSessionTimeout or agentxDefaultTimeout) is to
be used. This value is taken from the r.timeout field of
the agentx-Register-PDU.
"
::= { agentxRegistrationEntry 7 }
agentxRegInstance OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-only STATUS current DESCRIPTION "The value of agentxRegInstance is `true' for registrations for which the INSTANCE_REGISTRATION was set, and is `false' for all other registrations. "
::= { agentxRegistrationEntry 8 }
-- Conformance Statements for AgentX
agentxConformance OBJECT IDENTIFIER ::= { agentxMIB 2 }
agentxMIBGroups OBJECT IDENTIFIER ::= { agentxConformance 1 }
agentxMIBCompliances OBJECT IDENTIFIER ::= { agentxConformance 2 }
-- Compliance Statements for AgentX
agentxMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for SNMP entities that implement the
AgentX protocol. Note that a compliant agent can implement all
objects in this MIB module as read-only.
"
MODULE -- this module
MANDATORY-GROUPS { agentxMIBGroup }
OBJECT agentxSessionAdminStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required.
"
::= { agentxMIBCompliances 1 }
agentxMIBGroup OBJECT-GROUP
OBJECTS {
agentxDefaultTimeout,
agentxMasterAgentXVer,
agentxConnTableLastChange,
agentxConnOpenTime,
agentxConnTransportDomain,
agentxConnTransportAddress,
agentxSessionTableLastChange,
agentxSessionTimeout,
agentxSessionObjectID,
agentxSessionDescr,
agentxSessionAdminStatus,
agentxSessionOpenTime,
agentxSessionAgentXVer,
agentxRegistrationTableLastChange,
agentxRegContext,
agentxRegStart,
agentxRegRangeSubId,
agentxRegUpperBound,
agentxRegPriority,
agentxRegTimeout,
agentxRegInstance
}
STATUS current
DESCRIPTION
"All accessible objects in the AgentX MIB.
"
::= { agentxMIBGroups 1 }
END
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The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights which may cover technology that may be required to practice this standard. Please address the information to the IETF Executive Director.
Acknowledgements
This document is the result of the efforts of the IETF AgentX Working Group (WG).
This MIB is an evolution of the Subagent MIB by Bert Wijnen ([email protected]) which in turn was derived from the SMUX-MIB by Marshall Rose [18].
Thanks are in order to the following AgentX WG members:
Mike Daniele (Compaq Computer Corporation) Dale Francisco (Cisco Systems) Bob Natale (ACE*COMM Corporation) Randy Presuhn (BMC Software, Inc.) Shawn Routhier (Epilogue) Mike Thatcher (Independent Consultant)
Special acknowledgement is made to:
Maria Greene (Xedia)
Special acknowledgement is also made to the following individuals for participating in the 1998 AgentX testing summit (bakeoff) held in Sunnyvale, California:
Jeff Case (SNMP Research, Inc.) Mike Daniele (Compaq Computer Corporation) Mark Ellison (Ellison Software Consulting, Inc.) Lauren Heintz (BMC Software, Inc.) Verne Hyde (Independent Consultant) Bob Natale (ACE*COMM Corporation) Shawn Routhier (Epilogue) Mike Thatcher (Independent Consultant) Bert Wijnen (IBM T. J. Watson Research Center)
Security Considerations
There is a single management object defined in this MIB that has a MAX-ACCESS clause of read-write. This object may be considered sensitive or vulnerable in some network environments. The support for SET operations in a non-secure environment without proper protection can have a negative effect on network operations.
There is a single managed object in this MIB that may contain sensitive information. This object is agentxSessionAdminStatus. Setting agentxSessionAdminStatus to an inappropriate value can effectively prevent access to management information, or provide access to inappropriate information.
It is thus important to control even GET access to these objects and possibly to even encrypt the values of these objects when sending them over the network via SNMP. Not all versions of SNMP provide features for such a secure environment.
SNMPv1 by itself is not a secure environment. Even if the network itself is secure (for example by using IPSec), even then, there is no control as to who on the secure network is allowed to access and GET/SET (read/change/create/delete) the objects in this MIB.
It is recommended that the implementers consider the security features as provided by the SNMPv3 framework. Specifically, the use of the User-based Security Model RFC 2574 [12] and the View-based Access Control Model RFC 2575 [15] is recommended.
It is then a customer/user responsibility to ensure that the SNMP entity giving access to an instance of this MIB, is properly configured to give access to the objects only to those principals (users) that have legitimate rights to indeed GET or SET (change/delete) them.
References
[1] Harrington, D., Presuhn, R. and B. Wijnen, "An Architecture for
Describing SNMP Management Frameworks", RFC 2571, April 1999.
[2] Rose, M. and K. McCloghrie, "Structure and Identification of
Management Information for TCP/IP-based Internets", STD 16, RFC 1155, May 1990.
[3] Rose, M. and K. McCloghrie, "Concise MIB Definitions", STD 16,
RFC 1212, March 1991.
[4] Rose, M., "A Convention for Defining Traps for use with the
SNMP", RFC 1215, March 1991.
[5] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
M. and S. Waldbusser, "Structure of Management Information
Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.
[6] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
Rose, M. and S. Waldbusser, "Textual Conventions for SMIv2", STD
58, RFC 2579, April 1999.
[7] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
M. and S. Waldbusser, "Conformance Statements for SMIv2", STD
58, RFC 2580, April 1999.
[8] Case, J., Fedor, M., Schoffstall, M. and J. Davin, "Simple
Network Management Protocol", STD 15, RFC 1157, May 1990.
[9] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
"Introduction to Community-based SNMPv2", RFC 1901, January 1996.
[10] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
"Transport Mappings for Version 2 of the Simple Network
Management Protocol (SNMPv2)", RFC 1906, January 1996.
[11] Case, J., Harrington D., Presuhn R. and B. Wijnen, "Message
Processing and Dispatching for the Simple Network Management
Protocol (SNMP)", RFC 2572, April 1999.
[12] Blumenthal, U. and B. Wijnen, "User-based Security Model (USM)
for version 3 of the Simple Network Management Protocol
(SNMPv3)", RFC 2574, April 1999.
[13] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Protocol
Operations for Version 2 of the Simple Network Management
Protocol (SNMPv2)", RFC 1905, January 1996.
[14] Levi, D., Meyer, P. and B. Stewart, "SNMP Applications", RFC
2573, April 1999.
[15] Wijnen, B., Presuhn, R. and K. McCloghrie, "View-based Access
Control Model (VACM) for the Simple Network Management Protocol
(SNMP)", RFC 2575, April 1999.
[16] Case, J., Mundy, R., Partain, D. and B. Stewart, "Introduction
to Version 3 of the Internet-standard Network Management
Framework", RFC 2570, April 1999.
[17] Daniele, M., Wijnen, B., Ellison, M. and D. Francisco, "Agent
Extensibility (AgentX) Protocol, Version 1", RFC 2741, January 2000.
[18] Rose, M., "SNMP MUX Protocol and MIB", RFC 1227, May 1991.
[19] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
"Management Information Base for Version 2 of the Simple Network
Management Protocol (SNMPv2)", RFC 1907, January 1996.
Authors' and Editor's Addresses
Lauren Heintz Cisco Systems 1450 North McDowell Blvd. Petaluma, CA 94954-6515 USA Phone: +1 707-793-1714 EMail: [email protected]
Smitha Gudur Independent Consultant EMail: [email protected]
Mark Ellison (WG editor) Ellison Software Consulting, Inc. 38 Salem Road Atkinso, NH 03811 USA Phone: +1 603-362-9270 Email: [email protected]
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