Definitions of Managed Objects for Common Open Policy Service (COPS) Protocol Clients
RFC 2940

Document Type RFC - Proposed Standard (October 2000; No errata)
Last updated 2013-03-02
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Network Working Group                                            A. Smith
Request for Comments: 2940                                     Consultant
Category: Standards Track                                      D. Partain
                                                              J. Seligson
                                                          Nortel Networks
                                                             October 2000

  Definitions of Managed Objects for Common Open Policy Service (COPS)
                            Protocol Clients

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.


   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 a client of the Common
   Open Policy Service (COPS) protocol.

   This memo includes a MIB module in a manner that is compliant to the
   SMIv2 [V2SMI].

Smith                       Standards Track                     [Page 1]
RFC 2940                    COPS Client MIB                 October 2000

1.  The SNMP Management Framework

   The SNMP Management Framework presently consists of five major

      o  An overall architecture, described in an Architecture for
         Describing SNMP Management Frameworks [ARCH].

      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 [V1SMI], STD 16, RFC 1212 [V1CONCISE] and RFC
         1215 [V1TRAPS].  The second version, called SMIv2, is described
         in STD 58, RFC 2578 [V2SMI], STD 58, RFC 2579 [V2TC] and STD
         58, RFC 2580 [V2CONFORM].

      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 [V1PROTO].  A second version of
         the SNMP message protocol, which is not an Internet standards
         track protocol, is called SNMPv2c and described in RFC 1901
         [V2COMMUNITY] and RFC 1906 [V2TRANS].  The third version of the
         message protocol is called SNMPv3 and described in RFC1906
         [V2TRANS], Message Processing and Dispatching [V3MPC] and
         User-based Security Model [V3USM].

      o  Protocol operations for accessing management information.  The
         first set of protocol operations and associated PDU formats is
         described in STD 15, RFC 1157 [V1PROTO].  A second set of
         protocol operations and associated PDU formats is described in
         RFC 1905 [V2PROTO].

      o  A set of fundamental applications described in SNMPv3
         Applications [V3APPS] and the view-based access control
         mechanism described in View-based Access Control Model

   A more detailed introduction to the current SNMP Management Framework
   can be found in RFC 2570 [V3INTRO].

   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

Smith                       Standards Track                     [Page 2]
RFC 2940                    COPS Client MIB                 October 2000

   translation is possible (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

2.  Overview

   The COPS protocol [COPS] is a client-server protocol intended for the
   communication of policy requests and decisions between a Policy
   Enforcement Point (PEP) and a Policy Decision Point (PDP).  The PEP
   acts as a COPS client in this scenario.  The model for policy out-
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