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-- Randy Turner Network Architect Sharp Laboratories of America rturner@sharplabs.com--------------774370004D06 Content-Type: message/rfc822 Content-Transfer-Encoding: 7bit Content-Disposition: inline
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Internet Draft Event MIB 26 March 1997
Event MIB
26 March 1997
draft-ietf-disman-event-mib-00.txt
Bob Stewart Cisco Systems, Inc. bstewart@cisco.com
Status of this Memo
This document is an Internet-Draft. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts.
Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet- Drafts as reference material or to cite them other than as ``work in progress.''
To learn the current status of any Internet-Draft, please check the ``1id-abstracts.txt'' listing contained in the Internet- Drafts Shadow Directories on ds.internic.net (US East Coast), nic.nordu.net (Europe), ftp.isi.edu (US West Coast), or munnari.oz.au (Pacific Rim).
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1. Abstract
This memo defines an experimental portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes managed objects used for managing monitoring of MIB objects and taking action through events.
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2. The SNMP Network Management Framework
They are: The SNMP Network Management Framework presently consists of three major components. They are:
the SMI, described in RFC 1902 [1] - the mechanisms used for describing and naming objects for the purpose of management.
the MIB-II, STD 17, RFC 1213 [2] - the core set of managed objects for the Internet suite of protocols.
the protocol, RFC 1157 [3] and/or RFC 1905 [4], - the protocol for accessing managed objects.
The Framework permits new objects to be defined for the purpose of experimentation and evaluation.
2.1. Object Definitions
Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. Objects in the MIB are defined using the subset of Abstract Syntax Notation One (ASN.1) defined in the SMI. In particular, each object type is named by an OBJECT IDENTIFIER, an administratively assigned name. The object type together with an object instance serves to uniquely identify a specific instantiation of the object. For human convenience, we often use a textual string, termed the descriptor, to refer to the object type.
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3. Overview
This MIB is based heavily on the RMON and Manager-to-Manager MIBs. It depends on the services of the Target, Notification, and Expression MIBs.
All of this must suit either a relatively powerful manager or mid-level manager, as well as a somewhat more limited self-managing system.
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4. Definitions
EVENT-MIB DEFINITIONS ::= BEGIN
IMPORTS MODULE-IDENTITY, OBJECT-TYPE, experimental, Integer32, Unsigned32 NOTIFICATION-TYPE FROM SNMPv2-SMI TEXTUAL-CONVENTION, RowStatus, TimeStamp, DisplayString, AutonomousType, DateAndTime FROM SNMPv2-TC MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF EntryIndex, EntryName, EntryIndexOrZero FROM MANAGEMENT-TARGET-MIB FailureReason FROM NOTIFICATION-MIB
eventMIB MODULE-IDENTITY LAST-UPDATED "9703241700Z" ORGANIZATION "IETF Distributed Management Working Group" CONTACT-INFO "Bob Stewart Cisco Systems, Inc. 170 West Tasman Drive, San Jose CA 95134-1706. Phone: +1 408 526 4527 Email: bstewart@cisco.com" DESCRIPTION "The MIB module for defining event triggers and actions for network management purposes." ::= { experimental xx }
eventMIBObjects OBJECT IDENTIFIER ::= { eventMIB 1 }
mteTrigger OBJECT IDENTIFIER ::= { eventMIBObjects 1 } mteEvent OBJECT IDENTIFIER ::= { eventMIBObjects 2 }
-- -- Trigger Section--mteTriggerLastChange OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime at the most recent addition or
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deletion of a trigger or a trigger name change.
A management application can monitor this object to know that the trigger list has changed in a way requiring reloading of the trigger names." ::= { mteTrigger 1 }
mteTriggerFailures OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of times an attempt to check for a trigger condition has failed. This counts individually for each attempt in a group of targets or each attempt for a wildcarded object." ::= { mteTrigger 2 }
mteTriggerLastFailedTrigger OBJECT-TYPE SYNTAX triggerIndex MAX-ACCESS read-only STATUS current DESCRIPTION "The trigger that last failed an attempt to check for a trigger condition." ::= { mteTrigger 3 }
mteTriggerLastFailedReason OBJECT-TYPE SYNTAX FailureReason MAX-ACCESS read-only STATUS current DESCRIPTION "The reason for the last failure of an attempt to check for a trigger condition." ::= { mteTrigger 4 }
mteTriggerLastFailedTargetGroup OBJECT-TYPE SYNTAX EntryIndexOrZero MAX-ACCESS read-only STATUS current DESCRIPTION "The target group of the last failed attempt to check a trigger condition. The value 0 means this does not apply." ::= { mteTrigger 5 }
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mteTriggerLastFailedTargetScope OBJECT-TYPE SYNTAX EntryIndexOrZero MAX-ACCESS read-only STATUS current DESCRIPTION "The target scope of the last failed attempt to check a trigger condition. The value 0 means this does not apply" ::= { mteTrigger 6 }
mteTriggerLastValueID OBJECT-TYPE SYNTAX OBJECT IDENTIFIER MAX-ACCESS read-only STATUS current DESCRIPTION "The object identifier from mteTriggerValueID from the last attempt to check a trigger condition. This must be as full-qualified as possible, including filling in wild-card information determined in processing." ::= { mteTrigger 7 }
mteTriggerLastValue OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS notification-only STATUS current DESCRIPTION "The value of the object at mteTriggerValueID when a trigger fires." ::= { mteTrigger 8 }
mteTriggerTargetScope OBJECT-TYPE SYNTAX EntryIndexOrZero MAX-ACCESS notification-only STATUS current DESCRIPTION "The targetIndex of the scope for which the trigger fires or for which a check was attempted." ::= { mteTrigger 9 }
-- -- Trigger Creation Table--mteTriggerCreationTable OBJECT-TYPE SYNTAX SEQUENCE OF MteTriggerCreationEntry
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MAX-ACCESS not-accessible STATUS current DESCRIPTION "A table of triggers for network management events." ::= { mteTrigger 10 }
mteTriggerCreationEntry OBJECT-TYPE SYNTAX MteTriggerCreationEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Information about a single trigger.
To create an entry create the named entry in this table and activate it with mteTriggerCreationStatus. Then use mteTriggerIndex to populate mteTriggerTable.
Deleting an entry deletes the related entry in mteTriggerTable." INDEX { IMPLIED mteTriggerCreationName } ::= { mteTriggerCreationTable 1 }
MteTriggerCreationEntry ::= SEQUENCE { mteTriggerCreationName EntryName, mteTriggerIndex EntryIndex, mteTriggerCreationStatus RowStatus }
mteTriggerCreationName OBJECT-TYPE SYNTAX EntryName MAX-ACCESS not-accessible STATUS current DESCRIPTION "A locally-unique, administratively assigned name for the trigger." ::= { mteTriggerCreationEntry 1 }
mteTriggerIndex OBJECT-TYPE SYNTAX EntryIndex MAX-ACCESS read-only STATUS current DESCRIPTION "The numeric identification of the trigger." ::= { mteTriggerCreationEntry 2 }
mteTriggerCreationStatus OBJECT-TYPE
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SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "The control that allows creation/deletion of entries. Once made active an entry may not be modified except to delete it or change its name via mteTriggerName." ::= { mteTriggerCreationEntry 3 }
-- -- Trigger Table--mteTriggerTable OBJECT-TYPE SYNTAX SEQUENCE OF MteTriggerEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A table of management event trigger information." ::= { mteTrigger 11 }
mteTriggerEntry OBJECT-TYPE SYNTAX MteTriggerEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Information about a single management event trigger.
An entry appears in this table when an mteTriggerCreationEntry is activated. Deleting the matching mteTriggerCreationEntry deletes this entry." INDEX { mteTriggerIndex } ::= { mteTriggerteble 1 }
MteTriggerEntry ::= SEQUENCE { mteTriggerName EntryName, mteTriggerComment DisplayString, mteTriggerTest INTEGER, mteTriggerValueID Integer32, mteTriggerFrequency Integer32, mteTriggerTarget EntryIndexOrZero, mteTriggerRisingThreshold Integer32, mteTriggerFallingThreshold Integer32, mteTriggerEvent EntryIndexOrZero, mteTriggerRisingEvent EntryIndexOrZero,
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mteTriggerFallingEvent EntryIndexOrZero }
mteTriggerName OBJECT-TYPE SYNTAX EntryName MAX-ACCESS read-write STATUS current DESCRIPTION "The unique name of the target trigger, identical to mteTriggerCreationName.
Use this object to change the trigger's mteTriggerCreationName without changing its mteTriggerIndex." ::= { mteTriggerEntry 1 }
mteTriggerComment OBJECT-TYPE SYNTAX DisplayString MAX-ACCESS read-write STATUS current DESCRIPTION "A description of the trigger's function and use." DEFVAL { ''H } ::= { mteTriggerEntry 2 }
mteTriggerTest OBJECT-TYPE SYNTAX INTEGER { boolean(1), threshold(2) } MAX-ACCESS read-write STATUS current DESCRIPTION "The type of trigger test to perform. For all tests, mteTriggerValue must evaluate to an integer.
For 'boolean', a value of 0 is false. A non-zero value is true and fires the trigger.
For 'threshold' it works like RMON and the text needs to be copied into this MIB." DEFVAL { boolean } ::= { mteTriggerEntry 3 }
mteTriggerValueID OBJECT-TYPE SYNTAX OBJECT IDENTIFIER MAX-ACCESS read-write STATUS current DESCRIPTION
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"The object identifier of the MIB object to check to see if the trigger should fire.
This may be wildcarded by truncating all or part of the instance portion, in which case the condition is obtained as if with a GetNext function, checking multiple values if they exist." DEFVAL { 0 0 } ::= { mteTriggerEntry 4 }
mteTriggerFrequency OBJECT-TYPE SYNTAX Integer32 (1..65535) UNITS "seconds" MAX-ACCESS read-write STATUS current DESCRIPTION "The number of seconds to wait between trigger condition checks. To encourage consistency in sampling, the interval is measured from the beginning of one check to the beginning of the next." DEFVAL { 600 } ::= { mteTriggerEntry 5 }
mteTriggerTarget OBJECT-TYPE SYNTAX EntryIndexOrZero MAX-ACCESS read-write STATUS current DESCRIPTION "The targetIndex of the scope or group of scopes from which to obtain the condition for a trigger check.
A value of 0 indicates the local system." DEFVAL { 0 } ::= { mteTriggerEntry 6 }
mteTriggerRisingThreshold OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-write STATUS current DESCRIPTION "A threshold value to check against if mteTriggerType is 'threshold'. In this case if the value of the object at mteTriggerValueID is greater than or equal to this threshold and the value at the last sampling interval was less than this threshold, one mteTriggerRisingEvent is triggered.
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If mteTriggerType is not 'threshold', this object is not instantiated." DEFVAL { 0 } ::= { mteTriggerEntry 7 }
mteTriggerFallingThreshold OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-write STATUS current DESCRIPTION "A threshold value to check against if mteTriggerType is 'threshold'. In this case if the value of the object at mteTriggerValueID is less than or equal to this threshold and the value at the last sampling interval was greater than this threshold, one mteTriggerFallingEvent is triggered.
If mteTriggerType is not 'threshold', this object is not instantiated." DEFVAL { 0 } ::= { mteTriggerEntry 8 }
mteTriggerEvent OBJECT-TYPE SYNTAX EntryIndexOrZero MAX-ACCESS read-write STATUS current DESCRIPTION "The event to invoke when mteTriggerType is 'boolean' and this trigger fires. A value of 0 indicates no event.
If mteTriggerType is not 'boolean', this object is not instantiated." DEFVAL { 0 } ::= { mteTriggerEntry 9 }
mteTriggerRisingEvent OBJECT-TYPE SYNTAX EntryIndexOrZero MAX-ACCESS read-write STATUS current DESCRIPTION "The event to invoke when mteTriggerType is 'threshold' and this trigger fires based on mteTriggerRisingThreshold. A value of 0 indicates no event.
If mteTriggerType is not 'threshold', this object is not instantiated."
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DEFVAL { 0 } ::= { mteTriggerEntry 10 }
mteTriggerFallingEvent OBJECT-TYPE SYNTAX EntryIndexOrZero MAX-ACCESS read-write STATUS current DESCRIPTION "The event to invoke when mteTriggerType is 'threshold' and this trigger fires based on mteTriggerFallingThreshold. A value of 0 indicates no event.
If mteTriggerType is not 'threshold', this object is not instantiated." DEFVAL { 0 } ::= { mteTriggerEntry 11 }
-- -- Event Section--mteEventLastChange OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime at the most recent addition or deletion of an event or an event name change.
A management application can monitor this object to know that the event list has changed in a way requiring reloading of the event names." ::= { mteEvent 1 }
mteEventFailures OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of times an attempt to invoke an event has failed. This counts individually for each attempt in a group of targets or each attempt for a wildcarded trigger object." ::= { mteEvent 2 }
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mteEventLastFailedEvent OBJECT-TYPE SYNTAX eventIndex MAX-ACCESS read-only STATUS current DESCRIPTION "The event that last failed an attempted invocation." ::= { mteEvent 3 }
mteEventLastFailedReason OBJECT-TYPE SYNTAX FailureReason MAX-ACCESS read-only STATUS current DESCRIPTION "The reason for the last failure of an attempted event invocation." ::= { mteEvent 4 }
mteEventLastFailedTargetGroup OBJECT-TYPE SYNTAX EntryIndexOrZero MAX-ACCESS read-only STATUS current DESCRIPTION "The target group of the last failed attempt to invoke an event. The value 0 means this does not apply." ::= { mteEvent 5 }
mteEventLastFailedTargetScope OBJECT-TYPE SYNTAX EntryIndexOrZero MAX-ACCESS read-only STATUS current DESCRIPTION "The target scope of the last failed attempt to invoke an event. The value 0 means this does not apply" ::= { mteEvent 6 }
-- -- Event Creation Table--mteEventCreationTable OBJECT-TYPE SYNTAX SEQUENCE OF MteEventCreationEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A table of events for network management action."
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::= { mteEvent 7 }
mteEventCreationEntry OBJECT-TYPE SYNTAX MteEventCreationEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Information about a single event.
To create an entry create the named entry in this table and activate it with mteEventCreationStatus. Then use mteEventIndex to populate mteEventTable.
Deleting an entry deletes the related entry in mteEventTable." INDEX { IMPLIED mteEventCreationName } ::= { mteEventCreationTable 1 }
MteEventCreationEntry ::= SEQUENCE { mteEventCreationName EntryName, mteEventIndex EntryIndex, mteEventCreationStatus RowStatus }
mteEventCreationName OBJECT-TYPE SYNTAX EntryName MAX-ACCESS not-accessible STATUS current DESCRIPTION "A locally-unique, administratively assigned name for the event." ::= { mteEventCreationEntry 1 }
mteEventIndex OBJECT-TYPE SYNTAX EntryIndex MAX-ACCESS read-only STATUS current DESCRIPTION "The numeric identification of the event." ::= { mteEventCreationEntry 2 }
mteEventCreationStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION
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"The control that allows creation/deletion of entries. Once made active an entry may not be modified except to delete it or change its name via mteEventName." ::= { mteEventCreationEntry 3 }
-- -- Event Table--mteEventTable OBJECT-TYPE SYNTAX SEQUENCE OF MteEventEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A table of management event action information." ::= { mteEvent 3 }
mteEventEntry OBJECT-TYPE SYNTAX MteEventEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Information about a single management event's actions.
An entry appears in this table when an mteEventCreationEntry is activated. Deleting the matching mteEventCreationEntry deletes this entry." INDEX { mteEventIndex } ::= { mteEventTable 1 }
MteEventEntry ::= SEQUENCE { mteEventName EntryName, mteEventComment DisplayString, mteEventActions BITS, mteEventNotification OBJECT IDENTIFIER, mteEventSetObject OBJECT IDENTIFIER, mteEventSetValue Integer32, mteEventTarget EntryIndexOrZero }
mteEventName OBJECT-TYPE SYNTAX EntryName MAX-ACCESS read-write STATUS current DESCRIPTION
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"The unique name of the event, identical to mteEventCreationName.
Use this object to change the event's mteEventCreationName without changing its mteEventIndex." ::= { mteEventEntry 1 }
mteEventComment OBJECT-TYPE SYNTAX DisplayString MAX-ACCESS read-write STATUS current DESCRIPTION "A description of the event's function and use." DEFVAL { ''H } ::= { mteEventEntry 2 }
mteEventActions OBJECT-TYPE SYNTAX BITS { notification, trap, inform, set } MAX-ACCESS read-write STATUS current DESCRIPTION "The actions to peform when this event occurs.
For 'notification', Traps and/or Informs are sent according to the configuration in the Notification MIB..
For 'trap', Traps are sent unless the Notification MIB has the Trap 'hardDisabled' or there are no targets for it.
For 'inform', Informs are sent unless the Notification MIB has the Inform 'hardDisabled' or there are no targets for it.
For 'set', an SNMP Set operation is performed according to control values in this entry." DEFVAL { 0 } ::= { mteEventEntry 3 }
mteEventNotification OBJECT-TYPE SYNTAX OBJECT IDENTIFIER MAX-ACCESS read-write STATUS current DESCRIPTION "The object identifier from the NOTIFICATION-TYPE for the notification to use if metEventActions has 'notification', 'trap', or 'inform' set.
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If none of the above bits are set, this object is not instantiated." DEFVAL { 0 0 } ::= { mteEventEntry 4 }
mteEventSetObject OBJECT-TYPE SYNTAX OBJECT IDENTIFIER MAX-ACCESS read-write STATUS current DESCRIPTION "The object identifier from the MIB object to set if metEventActions has 'set' set.
If 'set' is not set, this object is not instantiated." DEFVAL { 0 0 } ::= { mteEventEntry 5 }
mteEventSetValue OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-write STATUS current DESCRIPTION "The value to which to set the object at mteEventSetObect." DEFVAL { 0 } ::= { mteEventEntry 6 }
mteEventSetTarget OBJECT-TYPE SYNTAX EntryIndexOrZero MAX-ACCESS read-write STATUS current DESCRIPTION "A scope or group of scopes in which to the object at mteEventSetObject to mteEventSetValue. A value of 0 indicates the local system." DEFVAL { 0 } ::= { mteEventEntry 7 }
-- -- Notifications--eventMIBNotificationPrefix OBJECT IDENTIFIER ::= { eventMIB 2 } eventMIBNotifications OBJECT IDENTIFIER ::= { eventMIBNotificationPrefix 0 }
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mteTriggerSenseAlarm NOTIFICATION-TYPE OBJECTS { mteTriggerName, mteTriggerTargetScope, mteTriggerLastValueID, mteTriggerLastValue } STATUS current DESCRIPTION "Notification that the trigger indicated by the object instances has fired, for triggers with mteTriggerType 'boolean'." ::= { eventMIBNotifications 1 }
mteTriggerRisingAlarm NOTIFICATION-TYPE OBJECTS { mteTriggerName, mteTriggerTargetScope, mteTriggerLastValueID, mteTriggerLastValue } STATUS current DESCRIPTION "Notification that the rising threshold was met for triggers with mteTriggerType 'threshold'." ::= { eventMIBNotifications 2 }
mteTriggerFallingAlarm NOTIFICATION-TYPE OBJECTS { mteTriggerName, mteTriggerTargetScope, mteTriggerLastValueID, mteTriggerLastValue } STATUS current DESCRIPTION "Notification that the falling threshold was met for triggers with mteTriggerType 'threshold'." ::= { eventMIBNotifications 3 }
mteTriggerFailureAlarm NOTIFICATION-TYPE OBJECTS { mteTriggerName, mteTriggerLastFailedReason, mteTriggerLastFailedTargetGroup, mteTriggerLastFailedTargetScope, mteTriggerLastFailedValueID } STATUS current DESCRIPTION "Notification that an attempt to check a trigger has failed.
The network manager must enable this notification only with
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a certain fear and trembling, as it can easily crowd out more important information. It should be used only to help diagnose a problem that has appeared in the error counters and can not be found otherwise." ::= { eventMIBNotifications 4 }
mteEventFailureAlarm NOTIFICATION-TYPE OBJECTS { mteTriggerName, mteTriggerTargetScope, mteTriggerLastValueID, mteTriggerLastValue, mteEventLastFailedReason, mteEventLastFailedTargetGroup, mteEventLastFailedTargetScope } STATUS current DESCRIPTION "Notification that an attempt to check a trigger has failed.
The network manager must enable this notification only with a certain fear and trembling, as it can easily crowd out more important information. It should be used only to help diagnose a problem that has appeared in the error counters and can not be found otherwise." ::= { eventMIBNotifications 5 }
-- The compliance statements have yet to be written. The intent is -- that all objects are required except where otherwise mentioned above -- and that a self-managing system need not support groups, remote checking, -- or wildcarding.
END
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5. Acknowledgements
This MIB contains considerable contributions from the RMON MIB, the Distributed Management Design Team (Andy Bierman, Maria Greene, Bob Stewart, and Steve Waldbusser), and colleagues at Cisco.
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6. References
[1] SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Structure of Management Information for version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1902, January 1996.
[2] McCloghrie, K., and M. Rose, Editors, "Management Information Base for Network Management of TCP/IP-based internets: MIB-II", STD 17, RFC 1213, March 1991.
[3] Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple Network Management Protocol", RFC 1157, May 1990.
[4] SNMPv2 Working Group, 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.
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7. Security Considerations
Security issues are not discussed in this memo.
8. Author's Address
Bob Stewart Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706
Phone: 408-526-4527 Email: bstewart@cisco.com
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Table of Contents
1 Abstract ........................................................ 2 2 The SNMP Network Management Framework ........................... 3 2.1 Object Definitions ............................................ 3 3 Overview ........................................................ 4 4 Definitions ..................................................... 5 5 Acknowledgements ................................................ 21 6 References ...................................................... 22 7 Security Considerations ......................................... 23 8 Author's Address ................................................ 23
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