Cyber Solutions Inc.
S. Kille
MessagingDirect Ltd.
June 1999
Directory Server Monitoring MIB
Status of this Memo
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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
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Copyright © The Internet Society (1999). All Rights Reserved.
Abstract
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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.
Table of Contents
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1. The SNMP Network Management Framework ....................... 2 2. The Directory Services Model ................................ 3 3. MIB Model for Directory Management .......................... 4 4. MIB design .................................................. 5 5. The Directory Server Monitoring MIB ......................... 5 6. Intellectual Property .......................................22 7. Changes from RFC1567 ........................................22 8. Acknowledgements ............................................22 9. References ..................................................23 Security Considerations .........................................24 Authors' Addresses ..............................................25 Full Copyright Statement ........................................26
1. The SNMP Network Management Framework
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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.
2. The Directory Services Model.
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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--------> | | | | +----------------+-
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FIG. 1.
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+----------------+ | | DSP <----------X X--------> DAP | Directory | Other | Server | Protocol <----------X X--------> LDAP | | +----------------+-
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FIG. 2.
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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.
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3. MIB Model for Directory Management.
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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.
4. MIB design.
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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.
5. The Directory Server Monitoring MIB.
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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: glenn@cysols.com Working Group E-mail: ietf-madman@innosoft.com To subscribe: ietf-madman-request@innosoft.com"-
DESCRIPTION
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" The MIB module for monitoring Directory Services."
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-- revision information
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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."
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REVISION "9311250000Z" -- 25th November 1993 DESCRIPTION "The original version of this MIB was published in RFC 1567." ::= { mib-2 66 }dsTable OBJECT-TYPE
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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
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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
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Counter32,
dsApplIfReplicationUpdatesOut
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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
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SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-only
STATUS current
DESCRIPTION-
"An identification of the protocol being used by the application
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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
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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
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SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION-
" Number of bind requests that have been rejected
due to inappropriate authentication or
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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 statementsdsEntryCompliance 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
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DESCRIPTION
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" The compliance statement for SNMP entities
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which implement the DIRECTORY-SERVER-MIB for monitoring Directory Server operations and the interaction of the Directory Server with peer Directory Servers."
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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
6. Intellectual Property
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The IETF takes no position regarding the validity or scope of any intellectual property or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; neither does it represent that it has made any effort to identify any such rights. Information on the IETF's procedures with respect to rights in standards-track and standards-related documentation can be found in BCP-11. Copies of claims of rights made available for publication and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementors or users of this specification can be obtained from the IETF Secretariat.
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.
7. Changes from RFC1567.
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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.
8. Acknowledgements
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This memo is the product of discussions and deliberations carried out in the Mail and Directory Management Working Group (ietf-madman-wg).
References
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[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
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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
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Glenn Mansfield Cyber Solutions Inc. 6-6-3 Minami Yoshinari Aoba-ku, Sendai 989-3204 Japan Phone: +81-22-303-4012 EMail: glenn@cysols.com
Steve E. Kille
MessagingDirect Ltd.
The Dome, The Square
Richmond TW9 1DT
UKPhone: +44-181-332-9091 EMail: Steve.Kille@MessagingDirect.com
Full Copyright Statement
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Acknowledgement
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Funding for the RFC Editor function is currently provided by the Internet Society.