rfc2668.txt

中、英文RFC文档大全打包下载完全版 .

Network Working Group                                           A. Smith
Request for Comments: 2668                        Extreme Networks, Inc.
Obsoletes: 2239                                                 J. Flick
Category: Standards Track                        Hewlett-Packard Company
                                                             K. de Graaf
                                                          Argon Networks
                                                            D. Romascanu
                                                     Lucent Technologies
                                                             D. McMaster
                                                     Cisco Systems, Inc.
                                                           K. McCloghrie
                                                     Cisco Systems, Inc.
                                                              S. Roberts
                                                Farallon Computing, Inc.
                                                             August 1999


                   Definitions of Managed Objects for
               IEEE 802.3 Medium Attachment Units (MAUs)

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 (1999).  All Rights Reserved.

Abstract

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   This memo obsoletes RFC 2239, "Definitions of Managed Objects for
   IEEE 802.3 Medium Attachment Units (MAUs) using SMIv2".  This memo
   extends that specification by including management information useful
   for the management of 1000 Mb/s MAUs.

   Ethernet technology, as defined by the 802.3 Working Group of the
   IEEE, continues to evolve, with scalable increases in speed, new
   types of cabling and interfaces, and new features.  This evolution
   may require changes in the managed objects in order to reflect this
   new functionality.  This document, as with other documents issued by
   this working group, reflects a certain stage in the evolution of
   Ethernet technology.  In the future, this document might be revised,



Smith, et al.               Standards Track                     [Page 1]

RFC 2668                     802.3 MAU MIB                   August 1999


   or new documents might be issued by the Ethernet Interfaces and Hub
   MIB Working Group, in order to reflect the evolution of Ethernet
   technology.

Table of Contents

   1.  Introduction ...............................................    2
   2.  The SNMP Management Framework ..............................    3
   3.  Overview ...................................................    4
   3.1.  Relationship to RFC 2239 .................................    4
   3.2.  Relationship to RFC 1515 .................................    4
   3.3.  MAU Management ...........................................    4
   3.4.  Relationship to Other MIBs ...............................    5
   3.4.1.  Relationship to the Interfaces MIB .....................    5
   3.4.2.  Relationship to the 802.3 Repeater MIB .................    5
   3.5.  Management of Internal MAUs ..............................    5
   4.  Definitions ................................................    6
   5.  Intellectual Property ......................................   49
   6.  Acknowledgements ...........................................   49
   7.  References .................................................   50
   8.  Security Considerations ....................................   52
   9.  Authors' Addresses .........................................   53
   10. Appendix: Change Log .......................................   55
   11.  Full Copyright Statement ..................................   57

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 defines objects for managing IEEE 802.3 Medium
   Attachment Units (MAUs).

   This memo also includes a MIB module.  This MIB module extends the
   list of managed objects specified in the earlier version of this MIB:
   RFC 2239 [21].

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [20].












Smith, et al.               Standards Track                     [Page 2]

RFC 2668                     802.3 MAU MIB                   August 1999


2.  The SNMP Management Framework

   The SNMP Management Framework presently consists of five major
   components:

    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, RFC 2578
        [5], STD 58, RFC 2579 [6] and STD 58, 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].

   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 (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.





Smith, et al.               Standards Track                     [Page 3]

RFC 2668                     802.3 MAU MIB                   August 1999


3.  Overview

3.1.  Relationship to RFC 2239

   This MIB is intended to be a superset of that defined by RFC 2239
   [21], which will go to historic status.  This MIB includes all of the
   objects contained in that MIB, plus several new ones which provide
   additional capabilities.  Implementors are encouraged to support all
   applicable conformance groups in order to make the best use of the
   new functionality provided by this MIB.  The new objects provide
   management support for:

   o    management of 1000 Mb/s devices

   o    management of PAUSE negotiation

   o    management of remote fault status

3.2.  Relationship to RFC 1515

   RFC 2239 was a replacement for RFC 1515 [22], which is now historic.
   RFC 2239 defined a superset of RFC 1515 which contained all of the
   objects defined in RFC 1515, plus several new ones which provided
   additional capabilities.  The new objects in RFC 2239 provided
   management support for:

   o    management of 100 Mb/s devices

   o    auto-negotiation on interface MAUs

   o    jack management

3.3.  MAU Management

   Instances of these object types represent attributes of an IEEE 802.3
   MAU.  Several types of MAUs are defined in the IEEE 802.3 CSMA/CD
   standard [16].  These MAUs may be connected to IEEE 802.3 repeaters
   or to 802.3 (Ethernet-like) interfaces. For convenience this document
   refers to these devices as "repeater MAUs" and "interface MAUs."

   The definitions presented here are based on Section 30.5, "Layer
   Management for 10, 100 & 1000 Mb/s Medium Attachment Units (MAUs)",
   and Annex 30A, "GDMO Specifications for 802.3 managed object classes"
   of IEEE Std. 802.3, 1998 edition [16].  That specification includes
   definitions for 10Mb/s, 100Mb/s and 1000Mb/s devices.  This
   specification is intended to serve the same purpose: to provide for
   management of all types of Ethernet/802.3 MAUs.




Smith, et al.               Standards Track                     [Page 4]

RFC 2668                     802.3 MAU MIB                   August 1999


3.4.  Relationship to Other MIBs

   It is assumed that an agent implementing this MIB will also implement
   (at least) the 'system' group defined in MIB-II [18].  The following
   sections identify other MIBs that such an agent should implement.

3.4.1.  Relationship to the Interfaces MIB.

   The sections of this document that define interface MAU-related
   objects specify an extension to the Interfaces MIB [19].  An agent
   implementing these interface-MAU related objects MUST also implement
   the relevant groups of Interface MIB.  The value of the object
   ifMauIfIndex is the same as the value of 'ifIndex' used to
   instantiate the interface to which the given MAU is connected.

   It is expected that an agent implementing the interface-MAU related
   objects in this MIB will also implement the Ethernet-like Interfaces
   MIB, [23].

   (Note that repeater ports are not represented as interfaces in the
   Interface MIB.)

3.4.2.  Relationship to the 802.3 Repeater MIB

   The section of this document that defines repeater MAU-related
   objects specifies an extension to the 802.3 Repeater MIB defined in
   [17].  An agent implementing these repeater-MAU related objects MUST
   also implement the 802.3 Repeater MIB.

   The values of 'rpMauGroupIndex' and 'rpMauPortIndex' used to
   instantiate a repeater MAU variable SHALL be the same as the values
   of 'rptrPortGroupIndex' and 'rptrPortIndex' used to instantiate the
   port to which the given MAU is connected.

3.5.  Management of Internal MAUs

   In some situations, a MAU can be "internal" -- i.e., its
   functionality is implemented entirely within a device.  For example,
   a managed repeater may contain an internal repeater-MAU and/or an
   internal interface-MAU through which management communications
   originating on one of the repeater's external ports pass in order to
   reach the management agent associated with the repeater.  Such
   internal MAUs may or may not be managed.  If they are managed,
   objects describing their attributes should appear in the appropriate
   MIB subtree:  dot3RpMauBasicGroup for internal repeater-MAUs and
   dot3IfMauBasicGroup for internal interface-MAUs.





Smith, et al.               Standards Track                     [Page 5]

RFC 2668                     802.3 MAU MIB                   August 1999


4.  Definitions

   MAU-MIB DEFINITIONS ::= BEGIN

       IMPORTS
           Counter32, Integer32,
           OBJECT-TYPE, MODULE-IDENTITY, NOTIFICATION-TYPE,
           OBJECT-IDENTITY, mib-2
               FROM SNMPv2-SMI
           TruthValue, TEXTUAL-CONVENTION
               FROM SNMPv2-TC
           OBJECT-GROUP, MODULE-COMPLIANCE, NOTIFICATION-GROUP
               FROM SNMPv2-CONF;

       mauMod MODULE-IDENTITY
           LAST-UPDATED "9908240400Z"  -- August 24, 1999
           ORGANIZATION "IETF Ethernet Interfaces and Hub MIB
                        Working Group"
           CONTACT-INFO
               "WG E-mail: [e-mail]
             To subscribe: [e-mail]

                    Chair: Dan Romascanu
                   Postal: Lucent Technologies
                           Atidim Technology Park, Bldg. 3
                           Tel Aviv 61131
                           Israel
                      Tel: [phone]
                      Fax: [phone]
                   E-mail: [e-mail]

                  Editors: Andrew Smith