Definitions of Managed Objects for Source Routing Bridges
RFC 1525

Document Type RFC - Historic (September 1993; No errata)
Obsoletes RFC 1286
Last updated 2013-03-02
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Network Working Group                                          E. Decker
Request for Comments: 1525                           cisco Systems, Inc.
Obsoletes: 1286                                            K. McCloghrie
Category: Standards Track                       Hughes LAN Systems, Inc.
                                                             P. Langille
                                                                     DEC
                                                          A. Rijsinghani
                                                                     DEC
                                                          September 1993

                   Definitions of Managed Objects for
                         Source Routing Bridges

Status of this Memo

   This RFC 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" for the standardization state and status
   of this protocol.  Distribution of this memo is unlimited.

Table of Contents

   1. Introduction .........................................    2
   2. The Network Management Framework .....................    2
   2.1 Object Definitions ..................................    2
   3. Overview .............................................    2
   3.1 Structure of MIB ....................................    3
   3.1.1 The dot1dSr Group .................................    4
   3.1.2 The dot1dPortPair Group ...........................    4
   3.2 Relationship to Other MIBs ..........................    5
   3.2.1 Relationship to the Bridge MIB ....................    5
   3.2.2 Relationship to the 'system' group ................    5
   3.2.3 Relationship to the 'interfaces' group ............    5
   4. Changes from RFC 1286 ................................    6
   5. Definitions ..........................................    7
   5.1 Groups in the SR MIB ................................    7
   5.2 The dot1dSr Group Definitions .......................    7
   5.3 The dot1dPortPair Group Definitions .................   14
   6. Acknowledgments ......................................   16
   7. References ...........................................   16
   8. Security Considerations ..............................   18
   9. Authors' Addresses ...................................   18

Decker, McCloghrie, Langille & Rijsinghani                      [Page 1]
RFC 1525               Source Routing Bridge MIB          September 1993

1.  Introduction

   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 source routing and
   source routing transparent bridges.  These bridges are also required
   to implement relevant groups in the Bridge MIB [6].

   This MIB supersedes the dot1dSr group of objects published in an
   earlier version of the Bridge MIB, RFC 1286.  Changes have primarily
   been made to track changes in the IEEE 802.5M SRT Addendum to the
   IEEE 802.1D Standard for MAC Bridges.

2.  The Network Management Framework

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

      o    STD 16, RFC 1155 which defines the SMI, the mechanisms used for
           describing and naming objects for the purpose of
           management.  STD 16, RFC 1212 defines a more concise description
           mechanism, which is wholly consistent with the SMI.

      o    STD 17, RFC 1213 defines MIB-II, the core set of managed objects
           for the Internet suite of protocols.

      o    STD 15, 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.

2.1.  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 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.

3.  Overview

   A common device present in many networks is the Bridge.  This device
   is used to connect Local Area Network segments below the network

Decker, McCloghrie, Langille & Rijsinghani                      [Page 2]
RFC 1525               Source Routing Bridge MIB          September 1993

   layer.  There are two major modes defined for this bridging;
   transparent and source route.  The transparent method of bridging is
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