Coexistence between version 1 and version 2 of the Internet-standard Network Management Framework
RFC 1452

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• 05

Network Working Group                                  J. Case
          Request for Comments: 1452                 SNMP Research, Inc.
                                                           K. McCloghrie
                                                      Hughes LAN Systems
                                                                 M. Rose
                                            Dover Beach Consulting, Inc.
                                                           S. Waldbusser
                                              Carnegie Mellon University
                                                              April 1993

                Coexistence between version 1 and version 2 of the
                  Internet-standard Network Management Framework

          Status of this Memo

          This RFC specifes 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.

          Table of Contents

          1 Introduction ..........................................    2
          2 Management Information ................................    3
          2.1 Object Definitions ..................................    3
          2.2 Trap Definitions ....................................    6
          2.3 Compliance Statements ...............................    7
          2.4 Capabilities Statements .............................    7
          3 Protocol Operations ...................................    8
          3.1 Proxy Agent Behavior ................................    8
          3.1.1 SNMPv2 -> SNMPv1 ..................................    8
          3.1.2 SNMPv1 -> SNMPv2 ..................................    8
          3.2 Bi-lingual Manager Behavior .........................   10
          4 Acknowledgements ......................................   11
          5 References ............................................   15
          6 Security Considerations ...............................   17
          7 Authors' Addresses ....................................   17

          Case, McCloghrie, Rose & Waldbusser                   [Page 1]



          RFC 1452    Coexistence between SNMPv1 and SNMPv2   April 1993

          1.  Introduction

          The purpose of this document is to describe coexistence
          between version 2 of the Internet-standard Network Management
          Framework, termed the SNMP version 2 framework (SNMPv2) [1],
          and the original Internet-standard Network Management
          Framework (SNMPv1), which consists of these three documents:

               RFC 1155 [2] which defines the Structure of Management
               Information (SMI), the mechanisms used for describing and
               naming objects for the purpose of management.

               RFC 1212 [3] which defines a more concise description
               mechanism, which is wholly consistent with the SMI.

               RFC 1157 [4] which defines the Simple Network Management
               Protocol (SNMP), the protocol used for network access to
               managed objects.

          Case, McCloghrie, Rose & Waldbusser                   [Page 2]



          RFC 1452    Coexistence between SNMPv1 and SNMPv2   April 1993

          2.  Management Information

          The SNMPv2 approach towards describing collections of managed
          objects is nearly a proper superset of the approach defined in
          the Internet-standard Network Management Framework.  For
          example, both approaches use ASN.1 [5] as the basis for a
          formal descriptive notation.  Indeed, one might note that the
          SNMPv2 approach largely codifies the existing practice for
          defining MIB modules, based on extensive experience with the
          current framework.

          The SNMPv2 documents which deal with information modules are:

               Structure of Management Information for SNMPv2 [6], which
               defines concise notations for describing information
               modules, managed objects and notifications;

               Textual Conventions for SNMPv2 [7], which defines a
               concise notation for describing textual conventions, and
               also defines some initial conventions; and,

               Conformance Statements for SNMPv2 [8], which defines
               concise notation for describing compliance and
               capabilities statements.

          The following sections consider the three areas: MIB modules,
          compliance statements, and capabilities statements.

          MIB modules defined using the current framework may continue
          to be used with the SNMPv2 protocol.  However, for the MIB