RFC2605
Network Working Group G. Mansfield Request for Comments: 2605 Cyber Solutions Inc. Obsoletes: 1567 S. Kille Category: Standards Track MessagingDirect Ltd.
June 1999
Directory Server Monitoring MIB
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 (1999). 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. This memo obsoletes RFC 1567, "X.500 Directory Monitoring MIB". This memo extends that specification to a more generic MIB for monitoring one or more directory servers each of which may support multiple access protocols. The MIB defined in this memo will be used in conjunction with the NETWORK-SERVICES-MIB [19] for monitoring Directory Servers.
Contents
The SNMP Network Management Framework
The SNMP Network Management Framework presently consists of five major components:
o An overall architecture, described in RFC 2571 [1].
o 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], RFC 2579 [6] and RFC 2580 [7].
o 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].
o 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].
o A set of fundamental applications described in RFC 2573 [14] and the view-based access control mechanism described in RFC 2575 [15].
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.
The Directory Services Model.
The Directory comprises of a set of servers (Directory Servers). Clients or Directory User Agents (DUA) are provided access to the Directory which maybe local or distributed, by the Directory Servers. The server maybe a X.500 Directory System Agent (DSA) [16] running over the OSI suite of protocols or, a (C)LDAP[17,18] frontend to the X.500 Directory System Agent or, a native LDAP Directory Server running directly over TCP or other protocols, or a database acting as a backend to another server, or any other application protocol, or any combination of the above. A Directory Server has one or more application protocol interfaces. Through these interfaces the Directory Server interacts with the DUA and with the peer Directory Servers.
Fig. 1 shows the case of a Directory Server that receives requests and sends back responses in some protocol. Fig. 2 shows one possible scenario where the Directory Server speaks multiple protocols.
+----------------+
| |
| Directory | Directory Protocol
| Server X-------->
| |
| |
+----------------+
FIG. 1.
+----------------+
| |
DSP <----------X X--------> DAP
| Directory |
Other | Server |
Protocol <----------X X--------> LDAP
| |
+----------------+
FIG. 2.
The Directory contains information in the form of entries. An entry is a collection of attributes and is uniquely identified by a name, the Distinguished Name (DN). The entries are arranged in a hierarchical tree-like structure called the Directory Information Tree (DIT).
A DUA requests a Directory Server to perform some operation on the Directory. The Directory Server is responsible for performing the operation and after completing its effort to carry out the request, returns a response to the DUA.
A Directory Server may use information stored in its local database or interact with (chain the request to) other Directory Servers to service the DUA request. Alternatively, a Directory Server may return a reference to another Directory Server (referral).
The local database of a Directory Server consists of the part of the Directory that is mastered by the Directory Server, the part of the Directory for which it keeps slave copies and cached information that is gathered during the operation of the Directory Server.
In the connection oriented mode a DUA "binds" to a Directory Server with a particular identification. The Directory Server may authenticate the identity of the DUA. In the connectionless mode as is employed in CLDAP no binding and/or authentication is carried out between the DUA and the Directory Server. The following type of operations are carried out by the Directory Server : Read, Compare, Addition of an Entry (AddEntry), Modification of an Entry (ModifyEntry), Modification of a DN (ModifyRDN), Deletion of an Entry (RemoveEntry), List, Search, Abandon. Some Directory Servers do not support some type of operations. For example CLDAP does not support AddEntry, ModifyEntry, ModifyRDN, RemoveEntry etc. In response to requests results and/or errors are returned by the Directory Server.
In the distributed Directory data is often replicated to enhance performance and for other advantages. The data to be replicated is transferred from the "Supplier" Directory Server to the "Consumer" Directory Server according to the replication agreement between the supplier and the receiver.
MIB Model for Directory Management.
A Directory manager should be able to monitor all the Directory Servers in his/her domain of management. The Directory Servers may be running on one or more hosts and, multiple Directory Servers may be running on the same host.
The manager may wish to monitor several aspects of the operational Directory Servers. He/she may want to know the process related aspects - the resource utilization of an operational Directory Server; the network service related aspects e.g. inbound- associations, outbound-associations, operational status, and finally the information specific to the Directory Server application - its operations and performance.
The MIB defined in this document covers the portion which is specific to Directory services. The network service related part of the MIB, and the host-resources related part of the MIB, as well as other parts of interest to a Manager monitoring the Directory services, are covered in separate documents [19] [20].
The MIB will cover a group of Directory Servers. The grouping will be done on some logical basis by the administrator/manager. In all cases, the grouping will be reflected in the pertinent NETWORK- SERVICES-MIB which will have an entry corresponding to each Directory Server in the group.
MIB design.
The basic principle has been to keep the MIB as simple as possible. The Managed objects included in the MIB are divided into three tables - dsTable, dsApplIfOpsTable, and dsIntTable.
- The dsTable contains a list of Directory Servers. The list
contains a description of the Directory Servers as well as
summary statistics on the entries held by and the cache
performance of each Directory Server. The group of servers on
this list is likely to contain a part of, if not all, the
Directory Servers in the management domain.
- The dsApplIfOpsTable provides summary statistics on the
accesses, operations and errors for each application protocol
interface of a Directory Server.
- The dsIntTable provides some useful information on the
interaction of the monitored Directory Servers with peer
Directory Servers.
There are references to the Directory itself for static information pertaining to the Directory Server. These references are in the form of "Directory Distinguished Name" [21] of the corresponding object. It is intended that Directory management applications will use these references to obtain further information on the objects of interest.
The Directory Server Monitoring MIB.
DIRECTORY-SERVER-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, Counter32, Gauge32, OBJECT-TYPE
FROM SNMPv2-SMI
mib-2 FROM RFC1213-MIB
DisplayString, TimeStamp
FROM SNMPv2-TC
MODULE-COMPLIANCE, OBJECT-GROUP
FROM SNMPv2-CONF
ZeroBasedCounter32
FROM RMON2-MIB
applIndex, DistinguishedName, URLString
FROM NETWORK-SERVICES-MIB;
dsMIB MODULE-IDENTITY
LAST-UPDATED "9906070000Z"
ORGANIZATION "IETF Mail and Directory Management Working
Group"
CONTACT-INFO
" Glenn Mansfield
Postal: Cyber Solutions Inc.
6-6-3, Minami Yoshinari
Aoba-ku, Sendai, Japan 989-3204.
Tel: +81-22-303-4012
Fax: +81-22-303-4015
E-mail: [email protected]
Working Group E-mail: [email protected]
To subscribe: [email protected]"
DESCRIPTION
" The MIB module for monitoring Directory Services."
-- revision information
REVISION "9906070000Z"
DESCRIPTION
"This revision of this MIB is published in RFC 2605.
This revision obsoletes RFC 1567. It is incompatible with the original MIB and so it has been renamed from dsaMIB to dsMIB."
REVISION "9311250000Z" -- 25th November 1993
DESCRIPTION
"The original version of this MIB was published in RFC 1567."
::= { mib-2 66 }
dsTable OBJECT-TYPE
SYNTAX SEQUENCE OF DsTableEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
" The table holding information related to the Directory
Servers."
::= {dsMIB 1}
dsTableEntry OBJECT-TYPE
SYNTAX DsTableEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
" Entry containing summary description for a Directory
Server."
INDEX { applIndex }
::= {dsTable 1}
-- General description of the Directory Server application will be -- available in the applTable of the NETWORK-SERVICES-MIB indexed by -- applIndex.
DsTableEntry ::= SEQUENCE {
dsServerType
BITS,
dsServerDescription
DisplayString,
-- Entry statistics/Cache performance
dsMasterEntries
Gauge32,
dsCopyEntries
Gauge32,
dsCacheEntries
Gauge32,
dsCacheHits
Counter32,
dsSlaveHits
Counter32
}
dsServerType OBJECT-TYPE
SYNTAX BITS {
frontEndDirectoryServer(0),
backEndDirectoryServer(1)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object indicates whether the server is
a frontend or, a backend or, both. If the server
is a frontend, then the frontEndDirectoryServer
bit will be set. Similarly for the backend."
::= {dsTableEntry 1}
dsServerDescription OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A text description of the application. This information
is intended to identify and briefly describe the
application in a status display."
::= {dsTableEntry 2}
-- A (C)LDAP frontend to the X.500 Directory will not have -- MasterEntries, CopyEntries; the following counters will -- be inaccessible for LDAP/CLDAP frontends to the X.500 -- directory: dsMasterEntries, dsCopyEntries, dsSlaveHits.
dsMasterEntries OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of entries mastered in the Directory Server."
::= {dsTableEntry 3}
dsCopyEntries OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of entries for which systematic (slave)
copies are maintained in the Directory Server."
::= {dsTableEntry 4}
dsCacheEntries OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of entries cached (non-systematic copies) in
the Directory Server. This will include the entries that
are cached partially. The negative cache is not counted."
::= {dsTableEntry 5}
dsCacheHits OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of operations that were serviced from
the locally held cache."
::= {dsTableEntry 6}
dsSlaveHits OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of operations that were serviced from
the locally held object replications ( copy-
entries)."
::= {dsTableEntry 7}
dsApplIfOpsTable OBJECT-TYPE
SYNTAX SEQUENCE OF DsApplIfOpsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
" The table holding information related to the
Directory Server operations."
::= {dsMIB 2}
dsApplIfOpsEntry OBJECT-TYPE
SYNTAX DsApplIfOpsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
" Entry containing operations related statistics
for a Directory Server."
INDEX { applIndex, dsApplIfProtocolIndex }
::= {dsApplIfOpsTable 1}
DsApplIfOpsEntry ::= SEQUENCE {
dsApplIfProtocolIndex
INTEGER,
dsApplIfProtocol
OBJECT IDENTIFIER,
-- Bindings
dsApplIfUnauthBinds
Counter32,
dsApplIfSimpleAuthBinds
Counter32,
dsApplIfStrongAuthBinds
Counter32,
dsApplIfBindSecurityErrors
Counter32,
-- In-coming operations
dsApplIfInOps
Counter32,
dsApplIfReadOps
Counter32,
dsApplIfCompareOps
Counter32,
dsApplIfAddEntryOps
Counter32,
dsApplIfRemoveEntryOps
Counter32,
dsApplIfModifyEntryOps
Counter32,
dsApplIfModifyRDNOps
Counter32,
dsApplIfListOps
Counter32,
dsApplIfSearchOps
Counter32,
dsApplIfOneLevelSearchOps
Counter32,
dsApplIfWholeSubtreeSearchOps
Counter32,
-- Out going operations
dsApplIfReferrals
Counter32,
dsApplIfChainings
Counter32,
-- Errors
dsApplIfSecurityErrors
Counter32,
dsApplIfErrors
Counter32,
-- replications
dsApplIfReplicationUpdatesIn
Counter32,
dsApplIfReplicationUpdatesOut
Counter32,
-- Traffic Volume
dsApplIfInBytes
Counter32,
dsApplIfOutBytes
Counter32
}
-- CLDAP does not use binds; for the CLDAP interface of a Directory -- Server the bind related counters will be inaccessible. -- -- CLDAP and LDAP implement "Read" and "List" operations -- indirectly via the "search" operation; the following -- counters will be inaccessible for the CLDAP and LDAP interfaces of -- Directory Servers: dsApplIfReadOps, dsApplIfListOps -- -- CLDAP does not implement "Compare", "Add", "Remove", -- "Modify", "ModifyRDN"; the following counters will be -- inaccessible for the CLDAP interfaces of Directory Servers: -- dsApplIfCompareOps, dsApplIfAddEntryOps, dsApplIfRemoveEntryOps, -- dsApplIfModifyEntryOps, dsApplIfModifyRDNOps. -- -- CLDAP Directory Servers do not return Referrals -- the following fields will remain inaccessible for -- CLDAP interfaces of Directory Servers: dsApplIfReferrals.
dsApplIfProtocolIndex OBJECT-TYPE
SYNTAX INTEGER (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An index to uniquely identify an entry corresponding to a
application-layer protocol interface. This index is used
for lexicographic ordering of the table."
::= {dsApplIfOpsEntry 1}
dsApplIfProtocol OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An identification of the protocol being used by the application
on this interface. For an OSI Application, this will be the
Application Context. For Internet applications, the IANA
maintains a registry[22] of the OIDs which correspond to
well-known applications. If the application protocol is
not listed in the registry, an OID value of the form
{applTCPProtoID port} or {applUDProtoID port} are used for
TCP-based and UDP-based protocols, respectively. In either
case 'port' corresponds to the primary port number being
used by the protocol. The OIDs applTCPProtoID and
applUDPProtoID are defined in NETWORK-SERVICES-MIB"
::= {dsApplIfOpsEntry 2}
dsApplIfUnauthBinds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of unauthenticated/anonymous bind requests
received."
::= {dsApplIfOpsEntry 3}
dsApplIfSimpleAuthBinds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of bind requests that were authenticated
using simple authentication procedures like password
checks. This includes the
password authentication using SASL mechanisms like
CRAM-MD5."
::= {dsApplIfOpsEntry 4}
dsApplIfStrongAuthBinds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of bind requests that were authenticated
using TLS and X.500 strong authentication procedures.
This includes the binds that were
authenticated using external authentication procedures."
::= {dsApplIfOpsEntry 5}
dsApplIfBindSecurityErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of bind requests that have been rejected
due to inappropriate authentication or
invalid credentials."
::= {dsApplIfOpsEntry 6}
dsApplIfInOps OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of requests received from DUAs or other
Directory Servers."
::= {dsApplIfOpsEntry 7}
dsApplIfReadOps OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of read requests received."
::= {dsApplIfOpsEntry 8}
dsApplIfCompareOps OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of compare requests received."
::= {dsApplIfOpsEntry 9}
dsApplIfAddEntryOps OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of addEntry requests received."
::= {dsApplIfOpsEntry 10}
dsApplIfRemoveEntryOps OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of removeEntry requests received."
::= {dsApplIfOpsEntry 11}
dsApplIfModifyEntryOps OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of modifyEntry requests received."
::= {dsApplIfOpsEntry 12}
dsApplIfModifyRDNOps OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of modifyRDN requests received."
::= {dsApplIfOpsEntry 13}
dsApplIfListOps OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of list requests received."
::= {dsApplIfOpsEntry 14}
dsApplIfSearchOps OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of search requests- baseObject searches,
oneLevel searches and whole subtree searches,
received."
::= {dsApplIfOpsEntry 15}
dsApplIfOneLevelSearchOps OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of oneLevel search requests received."
::= {dsApplIfOpsEntry 16}
dsApplIfWholeSubtreeSearchOps OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of whole subtree search requests received."
::= {dsApplIfOpsEntry 17}
dsApplIfReferrals OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of referrals returned in response
to requests for operations."
::= {dsApplIfOpsEntry 18}
dsApplIfChainings OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of operations forwarded by this Directory Server
to other Directory Servers."
::= {dsApplIfOpsEntry 19}
dsApplIfSecurityErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of requests received
which did not meet the security requirements. "
::= {dsApplIfOpsEntry 20}
dsApplIfErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of requests that could not be serviced
due to errors other than security errors, and
referrals.
A partially serviced operation will not be counted
as an error.
The errors include naming-related, update-related,
attribute-related and service-related errors."
::= {dsApplIfOpsEntry 21}
-- Replication operations
dsApplIfReplicationUpdatesIn OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of replication updates fetched or received from
supplier Directory Servers."
::= {dsApplIfOpsEntry 22}
dsApplIfReplicationUpdatesOut OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Number of replication updates sent to or taken by
consumer Directory Servers."
::= {dsApplIfOpsEntry 23}
dsApplIfInBytes OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Incoming traffic, in bytes, on the interface.
This will include requests from DUAs as well
as responses from other Directory Servers."
::= {dsApplIfOpsEntry 24}
dsApplIfOutBytes OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Outgoing traffic in bytes on the interface.
This will include responses to DUAs and Directory
Servers as well as requests to other Directory Servers."
::= {dsApplIfOpsEntry 25}
-- The dsIntTable contains statistical data on the peer -- Directory Servers with which the monitored Directory -- Server interacts or, attempts to interact. This table is -- expected to provide a useful insight into the effect of -- neighbours on the Directory Server's performance. -- The table keeps track of the last "N" Directory Servers -- with which the monitored Directory has interacted -- (attempted to interact), where "N" is a locally-defined -- constant. -- For a multiprotocol server, statistics for each protocol
-- are kept separetely.
dsIntTable OBJECT-TYPE
SYNTAX SEQUENCE OF DsIntEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
" Each row of this table contains some details
related to the history of the interaction
of the monitored Directory Server with its
peer Directory Servers."
::= { dsMIB 3 }
dsIntEntry OBJECT-TYPE
SYNTAX DsIntEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
" Entry containing interaction details of a Directory
Server with a peer Directory Server."
INDEX { applIndex,dsIntEntIndex, dsApplIfProtocolIndex }
::= { dsIntTable 1 }
DsIntEntry ::= SEQUENCE {
dsIntEntIndex
INTEGER,
dsIntEntDirectoryName
DistinguishedName,
dsIntEntTimeOfCreation
TimeStamp,
dsIntEntTimeOfLastAttempt
TimeStamp,
dsIntEntTimeOfLastSuccess
TimeStamp,
dsIntEntFailuresSinceLastSuccess
Gauge32,
dsIntEntFailures
ZeroBasedCounter32,
dsIntEntSuccesses
ZeroBasedCounter32,
dsIntEntURL
URLString
}
dsIntEntIndex OBJECT-TYPE
SYNTAX INTEGER (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
" Together with applIndex and dsApplIfProtocolIndex, this
object forms the unique key to
identify the conceptual row which contains useful info
on the (attempted) interaction between the Directory
Server (referred to by applIndex) and a peer Directory
Server using a particular protocol."
::= {dsIntEntry 1}
dsIntEntDirectoryName OBJECT-TYPE
SYNTAX DistinguishedName
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Distinguished Name of the peer Directory Server to
which this entry pertains."
::= {dsIntEntry 2}
dsIntEntTimeOfCreation OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" The value of sysUpTime when this row was created.
If the entry was created before the network management
subsystem was initialized, this object will contain
a value of zero."
::= {dsIntEntry 3}
dsIntEntTimeOfLastAttempt OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" The value of sysUpTime when the last attempt was made
to contact the peer Directory Server. If the last attempt
was made before the network management subsystem was
initialized, this object will contain a value of zero."
::= {dsIntEntry 4}
dsIntEntTimeOfLastSuccess OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" The value of sysUpTime when the last attempt made to
contact the peer Directory Server was successful. If there
have been no successful attempts this entry will have a value
of zero. If the last successful attempt was made before
the network management subsystem was initialized, this
object will contain a value of zero."
::= {dsIntEntry 5}
dsIntEntFailuresSinceLastSuccess OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" The number of failures since the last time an
attempt to contact the peer Directory Server was successful.
If there have been no successful attempts, this counter
will contain the number of failures since this entry
was created."
::= {dsIntEntry 6}
-- note this gauge has a maximum value of 4294967295 and, -- it does not wrap.[5]
dsIntEntFailures OBJECT-TYPE
SYNTAX ZeroBasedCounter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Cumulative failures in contacting the peer Directory Server
since the creation of this entry."
::= {dsIntEntry 7}
dsIntEntSuccesses OBJECT-TYPE
SYNTAX ZeroBasedCounter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" Cumulative successes in contacting the peer Directory Server
since the creation of this entry."
::= {dsIntEntry 8}
dsIntEntURL OBJECT-TYPE
SYNTAX URLString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
" URL of the peer Directory Server."
::= {dsIntEntry 9}
-- Conformance information
dsConformance OBJECT IDENTIFIER ::= { dsMIB 4 }
dsGroups OBJECT IDENTIFIER ::= { dsConformance 1 }
dsCompliances OBJECT IDENTIFIER ::= { dsConformance 2 }
-- Compliance statements
dsEntryCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for SNMP entities
which implement the DIRECTORY-SERVER-MIB for
a summary overview of the Directory Servers ."
MODULE -- this module
MANDATORY-GROUPS { dsEntryGroup }
::= { dsCompliances 1 }
dsOpsCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for SNMP entities
which implement the DIRECTORY-SERVER-MIB for monitoring
Directory Server operations, entry statistics and cache
performance."
MODULE -- this module
MANDATORY-GROUPS { dsEntryGroup, dsOpsGroup }
::= { dsCompliances 2 }
dsIntCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
" The compliance statement for SNMP entities
which implement the DIRECTORY-SERVER-MIB for
monitoring Directory Server operations and the
interaction of the Directory Server with peer
Directory Servers."
MODULE -- this module
MANDATORY-GROUPS { dsEntryGroup, dsIntGroup }
::= { dsCompliances 3 }
dsOpsIntCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
" The compliance statement for SNMP entities
which implement the DIRECTORY-SERVER-MIB for monitoring
Directory Server operations and the interaction of the
Directory Server with peer Directory Servers."
MODULE -- this module
MANDATORY-GROUPS { dsEntryGroup, dsOpsGroup, dsIntGroup }
::= { dsCompliances 4 }
-- Units of conformance
dsEntryGroup OBJECT-GROUP
OBJECTS {dsServerType, dsServerDescription,
dsMasterEntries, dsCopyEntries,
dsCacheEntries, dsCacheHits,
dsSlaveHits}
STATUS current
DESCRIPTION
" A collection of objects for a summary overview of the
Directory Servers."
::= { dsGroups 1 }
dsOpsGroup OBJECT-GROUP
OBJECTS {
dsApplIfProtocolIndex, dsApplIfProtocol,
dsApplIfUnauthBinds, dsApplIfSimpleAuthBinds,
dsApplIfStrongAuthBinds, dsApplIfBindSecurityErrors,
dsApplIfInOps, dsApplIfReadOps,
dsApplIfCompareOps, dsApplIfAddEntryOps,
dsApplIfRemoveEntryOps, dsApplIfModifyEntryOps,
dsApplIfModifyRDNOps, dsApplIfListOps,
dsApplIfSearchOps, dsApplIfOneLevelSearchOps,
dsApplIfWholeSubtreeSearchOps, dsApplIfReferrals,
dsApplIfChainings, dsApplIfSecurityErrors,
dsApplIfErrors, dsApplIfReplicationUpdatesIn,
dsApplIfReplicationUpdatesOut, dsApplIfInBytes,
dsApplIfOutBytes }
STATUS current
DESCRIPTION
" A collection of objects for monitoring the Directory
Server operations."
::= { dsGroups 2 }
dsIntGroup OBJECT-GROUP
OBJECTS {
dsIntEntDirectoryName, dsIntEntTimeOfCreation,
dsIntEntTimeOfLastAttempt, dsIntEntTimeOfLastSuccess,
dsIntEntFailuresSinceLastSuccess, dsIntEntFailures,
dsIntEntSuccesses, dsIntEntURL}
STATUS current
DESCRIPTION
" A collection of objects for monitoring the Directory
Server's interaction with peer Directory Servers."
::= { dsGroups 3 }
END
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Changes from RFC1567.
A more general Directory model in which, several Directory protocols coexist, has been adopted for the purpose of the MIB design. The result is a generic Directory Server Monitoring MIB.
Acknowledgements
This memo is the product of discussions and deliberations carried out in the Mail and Directory Management Working Group (ietf-madman-wg).
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, "SNMPv3 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] ITU-T Rec. X.501, "The Directory: Models", 1993.
[17] Wahl, M., Howes, T. and S. Kille, "Lightweight Directory Access
Protocol (v3)", RFC 2251, December 1997.
[18] Young, A., "Connection-less Lightweight X.500 Directory Access
Protocol", RFC 1798, June 1995.
[19] Freed N. and Kille, S., "Network Services Monitoring MIB", RFC
2248, January 1998.
[20] Grillo, P. and S. Waldbusser, "Host Resources MIB", RFC 1514,
September 1993.
[21] Wahl, W., Kille, S. and T. Howes, "Lightweight Directory Access
Protocol (v3): UTF-8 String Representation of Distinguished
Names", RFC 2253, December 1997.
[22] http://www.isi.edu/in-notes/iana/assignments/protocol-numbers
Security Considerations
There are no management objects defined in this MIB that have a MAX- ACCESS clause of read-write and/or read-create. So, if this MIB is implemented correctly, then there is no risk that an intruder can alter or create any management objects of this MIB via direct SNMP SET operations.
However, the information itself may partly reveal the configuration of the directory system and passively increase its vulnerability. The information could also be used to analyze network usage and traffic patterns.
Therefore, it may be important in some environments to control read access to these objects and possibly to even encrypt the values of these object when sending them over the network via SNMP. Not all versions of SNMP provide features for such a secure environment.
SNMPv1 by itself is such an insecure 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 (read) the objects in this MIB.
It is recommended that the implementors 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 those objects only to those principals (users) that have legitimate rights to access them.
Authors' Addresses
Glenn Mansfield Cyber Solutions Inc. 6-6-3 Minami Yoshinari Aoba-ku, Sendai 989-3204 Japan
Phone: +81-22-303-4012 EMail: [email protected]
Steve E. Kille MessagingDirect Ltd. The Dome, The Square Richmond TW9 1DT UK
Phone: +44-181-332-9091 EMail: [email protected]
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Acknowledgement
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