rfc3273.txt

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Network Working Group                                      S. Waldbusser
Request for Comments: 3273                                     July 2002
Category: Standards Track


     Remote Network Monitoring Management Information Base for High
                           Capacity Networks

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 (2002).  All Rights Reserved.

Abstract

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in TCP/IP-based internets.
   In particular, it defines objects for managing remote network
   monitoring (RMON) devices for use on high speed networks.  This
   document contains a MIB Module that defines these new objects and
   also contains definitions of some updated objects from the RMON-MIB
   in RFC 2819 and the RMON2-MIB in RFC 2021.


Table of Contents

   1  The SNMP Management Framework ............................... 2
   2  Overview .................................................... 3
   2.1  Structure of MIB .......................................... 3
   3  Updates to RMON MIB and RMON2 MIB objects ................... 4
   4  Conventions ................................................. 6
   5  Definitions ................................................. 7
   6  Security Considerations .....................................73
   7  Acknowledgments .............................................73
   8  References ..................................................73
   9  Notices .....................................................75
   10 Author's Address.............................................76
   11 Full Copyright Statement.....................................77






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1.  The SNMP Management Framework

   The SNMP 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
         is 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 is described in RFC 1901 [9],
         and RFC 1906 [10].  The third version of the message protocol
         is called SNMPv3 and is 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].

   A more detailed introduction to the current SNMP Management Framework
   can be found in RFC 2570 [22].

   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





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   SMIv1 during the translation process.  However, this loss of machine
   readable information is not considered to change the semantics of the
   MIB.

2.  Overview

   This document continues the architecture created in the RMON MIB [RFC
   2819] by supporting high speed networks.

   Remote network monitoring devices, often called monitors or probes,
   are instruments that exist for the purpose of managing a network.
   Often these remote probes are stand-alone devices and devote
   significant internal resources for the sole purpose of managing a
   network.  An organization may employ many of these devices, one per
   network segment, to manage its internet.  In addition, these devices
   may be used for a network management service provider to access a
   client network, often geographically remote.

   The objects defined in this document are intended as an interface
   between an RMON agent and an RMON management application and are not
   intended for direct manipulation by humans.  While some users may
   tolerate the direct display of some of these objects, few will
   tolerate the complexity of manually manipulating objects to
   accomplish row creation.  These functions should be handled by the
   management application.

2.1  Structure of MIB

   Except for the mediaIndependentTable, each of the tables in this MIB
   adds high capacity capability to an associated table in the RMON-1
   MIB or RMON-2 MIB.

   The objects are arranged into the following groups:

      - mediaIndependentGroup

      - etherStatsHighCapacityGroup

      - etherHistoryHighCapacityGroup

      - hostHighCapacityGroup

      - hostTopNHighCapacityGroup

      - matrixHighCapacityGroup

      - captureBufferHighCapacityGroup




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      - protocolDistributionHighCapacityGroup

      - nlHostHighCapacityGroup

      - nlMatrixHighCapacityGroup

      - nlMatrixTopNHighCapacityGroup

      - alHostHighCapacityGroup

      - alMatrixHighCapacityGroup

      - alMatrixTopNHighCapacityGroup

      - usrHistoryHighCapacityGroup

   These groups are the basic units of conformance.  If a remote
   monitoring device implements a group, then it must implement all
   objects in that group.  For example, a managed agent that implements
   the network layer matrix group must implement the
   nlMatrixSDHighCapacityTable and the nlMatrixDSHighCapacityTable.

   Implementations of this MIB must also implement the system and
   interfaces group of MIB-II [16,17].  MIB-II may also mandate the
   implementation of additional groups.

   These groups are defined to provide a means of assigning object
   identifiers, and to provide a method for agent implementors to know
   which objects they must implement.

3.  Updates to RMON MIB and RMON2 MIB objects

   This document extends the enumerations in the following objects from
   the RMON MIB [18] and the RMON2 MIB [20].

From the RMON MIB:

hostTopNRateBase OBJECT-TYPE
    SYNTAX     INTEGER {
                 hostTopNInPkts(1),
                 hostTopNOutPkts(2),
                 hostTopNInOctets(3),
                 hostTopNOutOctets(4),
                 hostTopNOutErrors(5),
                 hostTopNOutBroadcastPkts(6),
                 hostTopNOutMulticastPkts(7),
                 hostTopNHCInPkts(8),
                 hostTopNHCOutPkts(9),



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                 hostTopNHCInOctets(10),
                 hostTopNHCOutOctets(11)
               }
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
        "The variable for each host that the hostTopNRate
        variable is based upon, as well as a control
        for the table that the results will be reported in.

        This object may not be modified if the associated
        hostTopNStatus object is equal to valid(1).

        If this value is less than or equal to 7, when the report
        is prepared, entries are created in the hostTopNTable
        associated with this object.
        If this value is greater than or equal to 8, when the report
        is prepared, entries are created in the
        hostTopNHighCapacityTable associated with this object."
    ::= { hostTopNControlEntry 3 }

From the RMON2 MIB:

nlMatrixTopNControlRateBase OBJECT-TYPE
    SYNTAX      INTEGER {
                    nlMatrixTopNPkts(1),
                    nlMatrixTopNOctets(2),
                    nlMatrixTopNHighCapacityPkts(3),
                    nlMatrixTopNHighCapacityOctets(4)
                }
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
        "The variable for each nlMatrix[SD/DS] entry that the
        nlMatrixTopNEntries are sorted by, as well as a control
        for the table that the results will be reported in.

        This object may not be modified if the associated
        nlMatrixTopNControlStatus object is equal to active(1).

        If this value is less than or equal to 2, when the report
        is prepared, entries are created in the nlMatrixTopNTable
        associated with this object.
        If this value is greater than or equal to 3, when the report
        is prepared, entries are created in the
        nlMatrixTopNHighCapacityTable associated with this object."
    ::= { nlMatrixTopNControlEntry 3 }




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From the RMON2 MIB:

alMatrixTopNControlRateBase OBJECT-TYPE
    SYNTAX     INTEGER {
                  alMatrixTopNTerminalsPkts(1),
                  alMatrixTopNTerminalsOctets(2),
                  alMatrixTopNAllPkts(3),
                  alMatrixTopNAllOctets(4),
                  alMatrixTopNTerminalsHighCapacityPkts(5),
                  alMatrixTopNTerminalsHighCapacityOctets(6),
                  alMatrixTopNAllHighCapacityPkts(7),
                  alMatrixTopNAllHighCapacityOctets(8)
               }
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
        "The variable for each alMatrix[SD/DS] entry that the
        alMatrixTopNEntries are sorted by, as well as the
        selector of the view of the matrix table that will be
        used, as well as a control for the table that the results
        will be reported in.

        The values alMatrixTopNTerminalsPkts,
        alMatrixTopNTerminalsOctets,
        alMatrixTopNTerminalsHighCapacityPkts, and
        alMatrixTopNTerminalsHighCapacityOctets cause collection
        only from protocols that have no child protocols that are
        counted.  The values alMatrixTopNAllPkts,
        alMatrixTopNAllOctets, alMatrixTopNAllHighCapacityPkts, and
        alMatrixTopNAllHighCapacityOctets cause collection from all
        alMatrix entries.

        This object may not be modified if the associated
        alMatrixTopNControlStatus object is equal to active(1)."
    ::= { alMatrixTopNControlEntry 3 }

For convenience, updated MIB modules containing these objects may be
found at:
  ftp://ftp.rfc-editor.org/in-notes/mibs/current.mibs/rmon.mib
  ftp://ftp.rfc-editor.org/in-notes/mibs/current.mibs/rmon2.mib

4.  Conventions

   The following conventions are used throughout the RMON MIB and its
   companion documents.






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   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119.

   Good Packets

   Good packets are error-free packets that have a valid frame length.
   For example, on Ethernet, good packets are error-free packets that
   are between 64 octets long and 1518 octets long.  They follow the
   form defined in IEEE 802.3 section 3.2.all.  Implementors are urged
   to consult the appropriate media-specific specifications.

   Bad Packets

   Bad packets are packets that have proper framing and are therefore
   recognized as packets, but contain errors within the packet or have
   an invalid length.  For example, on Ethernet, bad packets have a
   valid preamble and SFD (Start of Frame Delimiter), but have a bad FCS
   (Frame Check Sequence), or are either shorter than 64 octets or
   longer than 1518 octets.  Implementors are urged to consult the
   appropriate media-specific specifications.

5.  Definitions

HC-RMON-MIB DEFINITIONS ::= BEGIN
IMPORTS
    MODULE-IDENTITY, OBJECT-TYPE, Counter32, Integer32,
        Gauge32, Counter64             FROM SNMPv2-SMI
    RowStatus, TimeStamp               FROM SNMPv2-TC
    MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF
    rmon, OwnerString, statistics, history, hosts, hostTopN, matrix,
    etherStatsIndex, etherHistoryIndex, etherHistorySampleIndex,
    hostIndex, hostAddress, hostTimeIndex, hostTimeCreationOrder,
    hostTopNReport, hostTopNIndex,