The Inverted Stack Table Extension to the Interfaces Group MIB
RFC 2864

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Network Working Group                                      K. McCloghrie
Request for Comments: 2864                                 Cisco Systems
Category: Standards Track                                      G. Hanson
                                                  ADC Telecommunications
                                                               June 2000

     The Inverted Stack Table Extension to the Interfaces Group MIB

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 (2000).  All Rights Reserved.

Table of Contents

   1 Introduction ..................................................  1
   2 The SNMP Network Management Framework .........................  1
   3 Interface Sub-Layers and the ifStackTable .....................  3
   4 Definitions ...................................................  4
   5 Acknowledgements ..............................................  7
   6 References ....................................................  7
   7 Security Considerations .......................................  8
   8 Authors' Addresses ............................................  9
   9 Notice on Intellectual Property ............................... 10
   10 Full Copyright Statement ..................................... 11

1.  Introduction

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   In particular, it describes managed objects which provide an inverted
   mapping of the interface stack table used for managing network
   interfaces.

2.  The SNMP Network Management Framework

   The SNMP Management Framework presently consists of five major
   components:

McCloghrie & Hanson         Standards Track                     [Page 1]
RFC 2864              Inverted Stack Extension MIB             June 2000

    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, which
      consists of 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
      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 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 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 [18].

   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 (e.g., 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.

McCloghrie & Hanson         Standards Track                     [Page 2]
RFC 2864              Inverted Stack Extension MIB             June 2000

3.  Interface Sub-Layers and the ifStackTable

   MIB-II [16] defines objects for managing network interfaces by
   providing a generic interface definition together with the ability to
   define media-specific extensions.  The generic objects are known as
   the 'interfaces' group.

   Experience in defining media-specific extensions showed the need to