Definitions of Managed Objects for Bridges
RFC 1493

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• 01

Network Working Group                                          E. Decker
Request for Comments: 1493                           cisco Systems, Inc.
Obsoletes: 1286                                              P. Langille
                                           Digital Equipment Corporation
                                                          A. Rijsinghani
                                           Digital Equipment Corporation
                                                           K. McCloghrie
                                                Hughes LAN Systems, Inc.
                                                               July 1993

                     Definitions of Managed Objects
                              for Bridges

Status of this Memo

   This RFC specifies an IAB standards track protocol for the Internet
   community, and requests discussion and suggestions for improvements.
   Please refer to the current edition of the "IAB Official Protocol
   Standards" for the standardization state and status of this protocol.
   Distribution of this memo is unlimited.

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 MAC bridges based on
   the IEEE 802.1D-1990 standard between Local Area Network (LAN)
   segments.  Provisions are made for support of transparent bridging.
   Provisions are also made so that these objects apply to bridges
   connected by subnetworks other than LAN segments.

Table of Contents

   1. The Network Management Framework ......................    2
   2. Objects ...............................................    2
   2.1 Format of Definitions ................................    3
   3. Overview ..............................................    3
   3.1 Structure of MIB .....................................    3
   3.1.1 The dot1dBase Group ................................    6
   3.1.2 The dot1dStp Group .................................    6
   3.1.3 The dot1dSr Group ..................................    6
   3.1.4 The dot1dTp Group ..................................    6
   3.1.5 The dot1dStatic Group ..............................    6
   3.2 Relationship to Other MIBs ...........................    6
   3.2.1 Relationship to the 'system' group .................    6
   3.2.2 Relationship to the 'interfaces' group .............    7

Decker, Langille, Rijsinghani & McCloghrie                      [Page 1]
RFC 1493                       Bridge MIB                      July 1993

   3.3 Textual Conventions ..................................    8
   4. Changes from RFC 1286 .................................    8
   5. Definitions ...........................................    9
   5.1 Groups in the Bridge MIB .............................   11
   5.2 The dot1dBase Group Definitions ......................   11
   5.3 The dot1dStp Group Definitions .......................   14
   5.4 The dot1dTp Group Definitions ........................   22
   5.5 The dot1dStatic Group Definitions ....................   28
   5.6 Traps for use by Bridges .............................   31
   6. Acknowledgments .......................................   31
   7. References ............................................   33
   8. Security Considerations ...............................   33
   9. Authors' Addresses ....................................   34

1.  The Network Management Framework

   The Internet-standard Network Management Framework consists of three
   components.  They are:

      STD16/RFC 1155 which defines the SMI, the mechanisms used for
      describing and naming objects for the purpose of management.
      STD16/RFC 1212 defines a more concise description mechanism, which
      is wholly consistent with the SMI.

      RFC 1156 which defines MIB-I, the core set of managed objects for
      the Internet suite of protocols.  STD17/RFC 1213, defines MIB-II,
      an evolution of MIB-I based on implementation experience and new
      operational requirements.

      STD15/RFC 1157 which defines the SNMP, the protocol used for
      network access to managed objects.

   The Framework permits new objects to be defined for the purpose of
   experimentation and evaluation.

2.  Objects

   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) [7]
   defined in the SMI.  In particular, each object is named by an OBJECT
   IDENTIFIER, an administratively assigned name, which specifies an
   object type.  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 also refer to the object type.

Decker, Langille, Rijsinghani & McCloghrie                      [Page 2]