RIP Version 2 MIB Extension
RFC 1724

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• 02

Network Working Group                                         G. Malkin
Request for Comments: 1724                               Xylogics, Inc.
Obsoletes: 1389                                                F. Baker
Category: Standards Track                                 Cisco Systems
                                                          November 1994

                      RIP Version 2 MIB Extension

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.

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 RIP Version 2.

Acknowledgements

   The authors would like to thank the IETF ripv2 Working Group for
   their help in improving the RIP-2 MIB extension.

Table of Contents

   1. The Network Management Framework ......................    2
   2. Objects ...............................................    2
   2.1 Format of Definitions ................................    3
   3. Overview ..............................................    3
   3.1 Textual Conventions ..................................    3
   3.2 Structure of MIB .....................................    3
   3.3 Modifications from RFC 1389 ..........................    3
   4. Definitions ...........................................    5
   4.1 Global Counters ......................................    6
   4.2 RIP Interface Tables .................................    6
   4.3 Peer Table ...........................................   12
   5. References ............................................   17
   6. Security Considerations ...............................   18
   7. Authors' Addresses ....................................   18

Malkin & Baker                                                  [Page 1]
RFC 1724                  RIP-2 MIB Extension              November 1994

1. The Network Management Framework

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

      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.

      RFC 1156 which defines MIB-I, the core set of managed objects for
         the Internet suite of protocols.  STD 17/RFC 1213 defines MIB-
         II, an evolution of MIB-I based on implementation experience
         and new operational requirements.

      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. 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 has a name, a syntax,
   and an encoding.  The name is 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 OBJECT
   DESCRIPTOR, to also refer to the object type.

   The syntax of an object type defines the abstract data structure
   corresponding to that object type.  The ASN.1 language is used for
   this purpose.  However, the SMI [3] purposely restricts the ASN.1
   constructs which may be used.  These restrictions are explicitly made
   for simplicity.

   The encoding of an object type is simply how that object type is
   represented using the object type's syntax.  Implicitly tied to the
   notion of an object type's syntax and encoding is how the object type
   is represented when being transmitted on the network.

   The SMI specifies the use of the basic encoding rules of ASN.1 [8],
   subject to the additional requirements imposed by the SNMP.

Malkin & Baker                                                  [Page 2]
RFC 1724                  RIP-2 MIB Extension              November 1994

2.1 Format of Definitions

   Section 4 contains the specification of all object types contained in
   this MIB module.  The object types are defined using the conventions
   defined in the SMI, as amended by the extensions specified in [9].

3. Overview

3.1 Textual Conventions

   Several new data types are introduced as a textual convention in this