HTTP/1.1 200 OK Date: Tue, 09 Apr 2002 01:59:19 GMT Server: Apache/1.3.20 (Unix) Last-Modified: Fri, 14 Aug 1998 13:07:00 GMT ETag: "2ed7cb-793c-35d43674" Accept-Ranges: bytes Content-Length: 31036 Connection: close Content-Type: text/plain Internet Draft Notification Log MIB 31 July 1998 Notification Log MIB 31 July 1998 draft-ietf-disman-notif-log-mib-03.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 view the entire list of current Internet-Drafts, please check the "1id-abstracts.txt" listing contained in the Internet-Drafts Shadow Directories on ftp.is.co.za (Africa), ftp.nordu.net (Northern Europe), ftp.nis.garr.it (Southern Europe), munnari.oz.au (Pacific Rim), ftp.ietf.org (US East Coast), or ftp.isi.edu (US West Coast). Distribution of this document is unlimited. Please send comments to the Distributed Management Working Group, . Copyright Notice Copyright (C) The Internet Society (1998). All Rights Reserved. Expires 31 July 1998+6 months [Page 1] Internet Draft Notification Log MIB 31 July 1998 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 logging SNMP Notifications. 2. The SNMP Management Framework The SNMP Management Framework presently consists of five major components: o An overall architecture, described in RFC 2271 [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 RFC 1155 [2], RFC 1212 [3] and RFC 1215 [4]. The second version, called SMIv2, is described in RFC 1902 [5], RFC 1903 [6] and RFC 1904 [7]. o Message protocols for transferring management information. The first version of the SNMP message protocol is called SNMPv1 and described in 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 2272 [11] and RFC 2274 [12]. o Protocol operations for accessing management information. The first set of protocol operations and associated PDU formats is described in 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 2273 [14] and the view-based access control mechanism described in RFC 2275 [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 Expires 31 July 1998+6 months [Page 2] Internet Draft Notification Log MIB 31 July 1998 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. Expires 31 July 1998+6 months [Page 3] Internet Draft Notification Log MIB 31 July 1998 3. Overview Systems that support SNMP often need a mechanism for recording Notification information as a hedge against lost Notifications, whether those are Traps or Informs that exceed retransmission limits. This MIB therefore provides common infrastructure for other MIBs in the form of a local logging function. It is intended primarily for senders of Notifications but could be used also by receivers. Given the Notification Log MIB, individual MIBs bear less responsibility to record the transient information associated with an event against the possibility that the Notification message is lost, and applications can poll the log to know that they have not missed important Notifications or to suspect that they might have. 3.1. Environment The overall environmental concerns for the MIB are: o SNMP Engines and Contexts o Security 3.1.1. SNMP Engines and Contexts As described in the SNMPv3 architecture [1], a given system may support multiple SNMP engines operating independently of one another, each with its own SNMP engine identification. Furthermore, within the perview of a given engine there may be multiple named management contexts supporting overlapping or disjoint sets of MIB objects and Notifications. Thus understanding a particular Notification requires knowing the SNMP engine and management context from whence it came. The simplest system may have only one SNMP engine, and the simplest engine may support only one context. In these cases, knowledge of the engine ID and context name can be assumed and need not be explicit. In a given implementation, an instance of the Notification Log MIB may be confined to a single engine or context or may combine information from multiple engines or contexts, allowing for the full range of exclusive or inclusive contents. To provide the necessary source information for a logged Notification, Expires 31 July 1998+6 months [Page 4] Internet Draft Notification Log MIB 31 July 1998 the MIB includes objects to record that Notification's source SNMP engine ID and management context name. In the case where such information can be assumed, the related object need not be instantiated, thus allowing the simplest implemenetation for the simplest system. 3.1.2. Security Except for the log itself security of this MIB falls under normal SNMP security policies. For the log, Notifications containing objects not within a requester's authorized view will appear not to exist, thus causing apparent holes in the log index space. If the log contains Notifications from SNMP engines not part of the local system, those Notifications fall under the overall local access policy for the log. 3.2. Structure The MIB has the following sections: o Configuration -- control over how much the log can hold and what Notifications are to be logged. o Statistics -- indications of logging activity. o Log -- the Notifications themselves. 3.2.1. Configuration The configuration section contains objects to manage resource use by the MIB in units of either bytes or entries. This section also contains a table that uses the initial index (snmpNotifyFilterName) from the snmpNotifyFilterTable in the standard SNMP Notification MIB, using those filters to provide a means of deciding which Notifications are to be logged. Expires 31 July 1998+6 months [Page 5] Internet Draft Notification Log MIB 31 July 1998 3.2.2. Statistics The statistics section contains counters for Notifications logged and discarded, supplying a means to understand the results of log capacity configuration. 3.2.3. Log The log contains the Notifications and the objects that came in their variable binding list, indexed by an integer that reflects when the entry was made. An application that wants to collect all logged Notifications or to know if it may have missed any can keep track of the highest index it has retrieved and start from there on its next poll, checking sysUpTime for a discontinuity that would have reset the index and perhaps have lost entries. Variables are in a table indexed by Notification index and variable index within that Notification. The values are kept as a "discriminated union," with one value object per variable. Exactly which value object is instantiated depends on the SNMP data type of the variable, with a separate object of appropriate type for each distinct SNMP data type. An application can thus reconstruct the information from the Notification PDU from what is recorded in the log. Expires 31 July 1998+6 months [Page 6] Internet Draft Notification Log MIB 31 July 1998 4. Definitions NOTIFICATION-LOG-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, OBJECT-TYPE, experimental, Integer32, Unsigned32, TimeTicks, Counter32, Counter64, IpAddress FROM SNMPv2-SMI TimeStamp, TruthValue, StorageType FROM SNMPv2-TC SnmpAdminString, SnmpEngineID FROM SNMP-FRAMEWORK-MIB snmpNotifyFilterProfileName FROM SNMP-NOTIFICATION-MIB MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF; notificationLogMIB MODULE-IDENTITY LAST-UPDATED "9807311700Z" 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 logging SNMP Notifications, that is, Traps and Informs." ::= { experimental xx } notificationLogMIBObjects OBJECT IDENTIFIER ::= { notificationLogMIB 1 } nlmConfig OBJECT IDENTIFIER ::= { notificationLogMIBObjects 1 } nlmStats OBJECT IDENTIFIER ::= { notificationLogMIBObjects 2 } nlmLog OBJECT IDENTIFIER ::= { notificationLogMIBObjects 3 } -- -- Configuration Section -- nlmConfigEntryLimitUnits OBJECT-TYPE SYNTAX INTEGER { entries(1), bytes(2) } MAX-ACCESS read-write STATUS current DESCRIPTION Expires 31 July 1998+6 months [Page 7] Internet Draft Notification Log MIB 31 July 1998 "The units for nlmConfigEntryLimit. See nlmConfigEntryLimit for further details. Implementations may allow choice of unit types or may chose either unit type and not allow it to be changed." ::= { nlmConfig 1 } nlmConfigEntryLimit OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-write STATUS current DESCRIPTION "The maximum number of entries or bytes that can be held in nlmLogTable. If an application changes the limit while there are Notifications in the log, the oldest Notifications are discarded to bring the log down to the new limit. Measuring in bytes is not necessarily subject to exact external calculations as to what will fit, as the implementation may or may not include internal overhead and is free to use any internal incoding. Implementations may choose a limit and not allow it to be changed or may enforce an upper bound on the limit." ::= { nlmConfig 2 } -- -- Notify Table Logging Control Table -- nlmConfigLogControlTable OBJECT-TYPE SYNTAX SEQUENCE OF NlmConfigLogControlEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A table of logging control entries, related to filter profiles from the SNMP Notification MIB." ::= { nlmConfig 3 } nlmConfigLogControlEntry OBJECT-TYPE SYNTAX NlmConfigLogControlEntry MAX-ACCESS not-accessible STATUS current Expires 31 July 1998+6 months [Page 8] Internet Draft Notification Log MIB 31 July 1998 DESCRIPTION "A logging control entry. Depending on the entry's storage type entries may be supplied by the system or created and deleted by applications using nlmConfigLogControlStatus." INDEX { snmpNotifyFilterProfileName } ::= { nlmConfigNotifyTable 1 } NlmConfigLogControlEntry ::= SEQUENCE { nlmConfigLogControlLog TruthValue, nlmConfigLogControlStorageType StorageType, nlmConfigLogControlStatus RowStatus } nlmConfigLogControlLog OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-create STATUS current DESCRIPTION "Control for whether this set of Notifications is logged in nlmLogTable." DEFVAL { false } ::= { nlmConfigLogControlEntry 1 } nlmConfigLogControlStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type of this conceptual row." DEFVAL { false } ::= { nlmConfigLogControlEntry 2 } nlmConfigLogControlStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "Control for creating and deleting entries. Entries may be modified while active." DEFVAL { createAndWait } ::= { nlmConfigLogControlEntry 3 } -- -- Statisitics Section -- Expires 31 July 1998+6 months [Page 9] Internet Draft Notification Log MIB 31 July 1998 nlmStatsNotificationsLogged OBJECT-TYPE SYNTAX Counter32 UNITS "entries" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of Notifications put in the nlmLogTable." ::= { nlmStats 1 } nlmStatsEntriesDiscarded OBJECT-TYPE SYNTAX Counter32 UNITS "entries" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of log entries discarded to make room for a new entry or because of a change in nlmConfigEntryLimitUnits or nlmConfigEntryLimit." ::= { nlmStats 2 } -- -- Log Section -- -- -- Log Table -- nlmLogTable OBJECT-TYPE SYNTAX SEQUENCE OF NlmLogEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A table of Notification log entries. It is an implementation-specific matter whether entries in this table are preserved across initializations of the management system. In general one would expect that they are not." ::= { nlmLog 1 } nlmLogEntry OBJECT-TYPE SYNTAX NlmLogEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION Expires 31 July 1998+6 months [Page 10] Internet Draft Notification Log MIB 31 July 1998 "A Notification log entry. Entries appear in this table when Notifications occur and are enabled for logging by nlmConfigNotifyLog. They are removed to make way for new entries or in response to an application setting nlmConfigEntryLimit or nlmConfigEntryLimitUnits to reduce capacity." INDEX { nlmLogIndex } ::= { nlmLogTable 1 } NlmLogEntry ::= SEQUENCE { nlmLogIndex Unsigned32, nlmLogTime TimeStamp, nlmLogEngineID SnmpEngineID, nlmLogContextName SnmpAdminString, nlmLogVariables Unsigned32, nlmLogNotificationID OBJECT IDENTIFIER } nlmLogIndex OBJECT-TYPE SYNTAX Unsigned32 (1..4294967295) MAX-ACCESS not-accessible STATUS current DESCRIPTION "A monotonically increasing integer for the sole purpose of indexing entries. When it reaches the maximum value, an extremely unlikely event, the agent wraps the value back to 1 and may flush existing entries." ::= { nlmLogEntry 1 } nlmLogTime OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when the entry occurred." ::= { nlmLogEntry 2 } nlmLogEngineID OBJECT-TYPE SYNTAX SnmpEngineID MAX-ACCESS read-only STATUS current DESCRIPTION "The identification of the SNMP engine at which the Notification originated. Expires 31 July 1998+6 months [Page 11] Internet Draft Notification Log MIB 31 July 1998 If the log can contain Notifications from only one engine this object need not be instantiated." ::= { nlmLogEntry 3 } nlmLogContextName OBJECT-TYPE SYNTAX SnmpAdminString MAX-ACCESS read-only STATUS current DESCRIPTION "The name of the SNMP MIB context from which the Notification came. If the Notification's source SNMP engine does not support multiple contexts, this object need not be instantiated." ::= { nlmLogEntry 4 } nlmLogVariables OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of variables in nlmLogVariableTable for this Notification." ::= { nlmLogEntry 5 } nlmLogNotificationID OBJECT-TYPE SYNTAX OBJECT IDENTIFIER MAX-ACCESS read-only STATUS current DESCRIPTION "The NOTIFICATION-TYPE object identifer of the Notification that occurred." ::= { nlmLogEntry 6 } -- -- Log Variable Table -- nlmLogVariableTable OBJECT-TYPE SYNTAX SEQUENCE OF NlmLogVariableEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A table of variables to go with Notification log entries." ::= { nlmLog 2 } Expires 31 July 1998+6 months [Page 12] Internet Draft Notification Log MIB 31 July 1998 nlmLogVariableEntry OBJECT-TYPE SYNTAX NlmLogVariableEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A Notification log entry variable. Entries appear in this table when there are variables in the varbind list of a Notification in nlmLogTable." INDEX { nlmLogIndex, nlmLogVariableIndex } ::= { nlmLogVariableTable 1 } NlmLogVariableEntry ::= SEQUENCE { nlmLogVariableIndex Unsigned32, nlmLogVariableID OBJECT IDENTIFIER, nlmLogVariableValueType INTEGER, nlmLogVariableCounter32Val Counter32, nlmLogVariableUnsigned32Val Unsigned32, nlmLogVariableTimeTicksVal TimeTicks, nlmLogVariableInteger32Val Integer32, nlmLogVariableOctetStringVal OCTET STRING, nlmLogVariableIpAddressVal IpAddress, nlmLogVariableOidVal OBJECT IDENTIFIER, nlmLogVariableCounter64Val Counter64 } nlmLogVariableIndex OBJECT-TYPE SYNTAX Unsigned32 (1..4294967295) MAX-ACCESS not-accessible STATUS current DESCRIPTION "A monotonically increasing integer, starting at 1 for a given nlmLogIndex, for indexing variables within the logged Notification." ::= { nlmLogVariableEntry 1 } nlmLogVariableID OBJECT-TYPE SYNTAX OBJECT IDENTIFIER MAX-ACCESS read-only STATUS current DESCRIPTION "The variable's object identifier." ::= { nlmLogVariableEntry 2 } nlmLogVariableValueType OBJECT-TYPE SYNTAX INTEGER { counter32(1), unsignedOrGauge32(2), Expires 31 July 1998+6 months [Page 13] Internet Draft Notification Log MIB 31 July 1998 timeTicks(3), integer32(4), ipAddress(5), octetString(6), objectId(7), counter64(8) } MAX-ACCESS read-only STATUS current DESCRIPTION "The type of the value. One and only one of the value objects that follow is instantiated, based on this type." ::= { nlmLogVariableEntry 3 } nlmLogVariableCounter32Val OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The value when nlmLogVariableType is 'counter32'." ::= { nlmLogVariableEntry 4 } nlmLogVariableUnsigned32Val OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-only STATUS current DESCRIPTION "The value when nlmLogVariableType is 'unsignedOrGauge32'." ::= { nlmLogVariableEntry 5 } nlmLogVariableTimeTicksVal OBJECT-TYPE SYNTAX TimeTicks MAX-ACCESS read-only STATUS current DESCRIPTION "The value when nlmLogVariableType is 'timeTicks'." ::= { nlmLogVariableEntry 6 } nlmLogVariableInteger32Val OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "The value when nlmLogVariableType is 'integer32'." ::= { nlmLogVariableEntry 7 } nlmLogVariableOctetStringVal OBJECT-TYPE SYNTAX OCTET STRING MAX-ACCESS read-only STATUS current Expires 31 July 1998+6 months [Page 14] Internet Draft Notification Log MIB 31 July 1998 DESCRIPTION "The value when nlmLogVariableType is 'octetString'." ::= { nlmLogVariableEntry 8 } nlmLogVariableIpAddressVal OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The value when nlmLogVariableType is 'ipAddress'." ::= { nlmLogVariableEntry 9 } nlmLogVariableOidVal OBJECT-TYPE SYNTAX OBJECT IDENTIFIER MAX-ACCESS read-only STATUS current DESCRIPTION "The value when nlmLogVariableType is 'objectId'." ::= { nlmLogVariableEntry 10 } nlmLogVariableCounter64Val OBJECT-TYPE SYNTAX Counter64 MAX-ACCESS read-only STATUS current DESCRIPTION "The value when nlmLogVariableType is 'counter64'." ::= { nlmLogVariableEntry 11 } -- -- Conformance -- notificationLogMIBConformance OBJECT IDENTIFIER ::= { notificationLogMIB 3 } notificationLogMIBCompliances OBJECT IDENTIFIER ::= { notificationLogMIBConformance 1 } notificationLogMIBGroups OBJECT IDENTIFIER ::= { notificationLogMIBConformance 2 } -- Compliance notificationLogMIBCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for entities which implement the Notification Log MIB." MODULE -- this module Expires 31 July 1998+6 months [Page 15] Internet Draft Notification Log MIB 31 July 1998 MANDATORY-GROUPS { notificationLogConfigGroup, notificationLogStatsGroup, notificationLogLogGroup } ::= { notificationLogMIBCompliances 1 } -- Units of Conformance notificationLogConfigGroup OBJECT-GROUP OBJECTS { nlmConfigEntryLimitUnits, nlmConfigEntryLimit, nlmConfigNotifyLog } STATUS current DESCRIPTION "Notification log configuration management." ::= { notificationLogMIBGroups 1 } notificationLogStatsGroup OBJECT-GROUP OBJECTS { nlmStatsNotificationsLogged, nlmStatsEntriesDiscarded } STATUS current DESCRIPTION "Notification log statistics." ::= { notificationLogMIBGroups 2 } notificationLogLogGroup OBJECT-GROUP OBJECTS { nlmLogTime, nlmLogEngineID, nlmLogContextName, nlmLogVariables, nlmLogNotificationID, nlmLogVariableID, nlmLogVariableValueType, nlmLogVariableCounter32Val, nlmLogVariableUnsigned32Val, nlmLogVariableTimeTicksVal, nlmLogVariableInteger32Val, nlmLogVariableOctetStringVal, Expires 31 July 1998+6 months [Page 16] Internet Draft Notification Log MIB 31 July 1998 nlmLogVariableIpAddressVal, nlmLogVariableOidVal, nlmLogVariableCounter64Val } STATUS current DESCRIPTION "Notification log data." ::= { notificationLogMIBGroups 3 } END Expires 31 July 1998+6 months [Page 17] Internet Draft Notification Log MIB 31 July 1998 5. References [1] Harrington, D., Presuhn, R., and B. Wijnen, "An Architecture for Describing SNMP Management Frameworks", RFC 2271, Cabletron Systems, Inc., BMC Software, Inc., IBM T. J. Watson Research, January 1998 [2] Rose, M., and K. McCloghrie, "Structure and Identification of Management Information for TCP/IP-based Internets", RFC 1155, Performance Systems International, Hughes LAN Systems, May 1990 [3] Rose, M., and K. McCloghrie, "Concise MIB Definitions", RFC 1212, Performance Systems International, Hughes LAN Systems, March 1991 [4] M. Rose, "A Convention for Defining Traps for use with the SNMP", RFC 1215, Performance Systems International, March 1991 [5] 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, SNMP Research,Inc., Cisco Systems, Inc., Dover Beach Consulting, Inc., International Network Services, January 1996. [6] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Textual Conventions for Version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1903, SNMP Research, Inc., Cisco Systems, Inc., Dover Beach Consulting, Inc., International Network Services, January 1996. [7] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Conformance Statements for Version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1904, SNMP Research, Inc., Cisco Systems, Inc., Dover Beach Consulting, Inc., International Network Services, January 1996. [8] Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple Network Management Protocol", RFC 1157, SNMP Research, Performance Systems International, Performance Systems International, MIT Laboratory for Computer Science, May 1990. [9] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Introduction to Community-based SNMPv2", RFC 1901, SNMP Research, Inc., Cisco Systems, Inc., Dover Beach Consulting, Inc., International Network Services, January 1996. Expires 31 July 1998+6 months [Page 18] Internet Draft Notification Log MIB 31 July 1998 [10] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Transport Mappings for Version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1906, SNMP Research, Inc., Cisco Systems, Inc., Dover Beach Consulting, Inc., International Network Services, January 1996. [11] Case, J., Harrington D., Presuhn R., and B. Wijnen, "Message Processing and Dispatching for the Simple Network Management Protocol (SNMP)", RFC 2272, SNMP Research, Inc., Cabletron Systems, Inc., BMC Software, Inc., IBM T. J. Watson Research, January 1998. [12] Blumenthal, U., and B. Wijnen, "User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3)", RFC 2274, IBM T. J. Watson Research, January 1998. [13] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Protocol Operations for Version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1905, SNMP Research, Inc., Cisco Systems, Inc., Dover Beach Consulting, Inc., International Network Services, January 1996. [14] Levi, D., Meyer, P., and B. Stewart, "SNMPv3 Applications", RFC 2273, SNMP Research, Inc., Secure Computing Corporation, Cisco Systems, January 1998 [15] Wijnen, B., Presuhn, R., and K. McCloghrie, "View-based Access Control Model (VACM) for the Simple Network Management Protocol (SNMP)", RFC 2275, IBM T. J. Watson Research, BMC Software, Inc., Cisco Systems, Inc., January 1998 Expires 31 July 1998+6 months [Page 19] Internet Draft Notification Log MIB 31 July 1998 6. Security Considerations Security issues are discussed in the overview. 7. 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 Expires 31 July 1998+6 months [Page 20] Internet Draft Notification Log MIB 31 July 1998 Table of Contents 1 Abstract ........................................................ 2 2 The SNMP Management Framework ................................... 2 3 Overview ........................................................ 4 3.1 Environment ................................................... 4 3.1.1 SNMP Engines and Contexts ................................... 4 3.1.2 Security .................................................... 5 3.2 Structure ..................................................... 5 3.2.1 Configuration ............................................... 5 3.2.2 Statistics .................................................. 6 3.2.3 Log ......................................................... 6 4 Definitions ..................................................... 7 5 References ...................................................... 18 6 Security Considerations ......................................... 20 7 Author's Address ................................................ 20 Expires 31 July 1998+6 months [Page 21]