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Network Working Group                                        K. de Graaf
Request for Comments: 2239                              3Com Corporation
Category: Standards Track                                   D. Romascanu
                                                     Madge Networks Ltd.
                                                             D. McMaster
                                                      Cisco Systems Inc.
                                                           K. McCloghrie
                                                      Cisco Systems Inc.
                                                              S. Roberts
                                                Farallon Computing, Inc.
                                                           November 1997


             Definitions of Managed Objects for IEEE 802.3
               Medium Attachment Units (MAUs) using SMIv2


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 (1997).  All Rights Reserved.

Table of Contents

   1 The SNMPv2 Network Management Framework ...............    2
   1.1 Object Definitions ..................................    2
   2 Overview ..............................................    3
   2.1 Relationship to RFC 1515 ............................    3
   2.2 MAU Management ......................................    3
   2.3 Relationship to Other MIBs ..........................    3
   2.3.1 Relationship to the MIB-II 'interfaces' group .....    3
   2.3.2 Relationship to the 802.3 Repeater MIB ............    4
   2.4 Management of Internal MAUs .........................    4
   3 Definitions ...........................................    4
   4 Acknowledgements ......................................   39
   5 References ............................................   40
   6 Security Considerations ...............................   41
   7 Authors' Addresses ....................................   41
   8 Full Copyright Statement ..............................   43





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RFC 2239          Managed Objects for IEEE 802.3 MAUs      November 1997


Abstract

   This memo defines an portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   In particular, it defines objects for managing 10 and 100 Mb/second
   Medium Attachment Units (MAUs) based on IEEE Std 802.3 Section 30,
   "10 & 100 Mb/s Management," October 26, 1995.

1.  The SNMPv2 Network Management Framework

   The SNMPv2 Network Management Framework presently consists of three
   major components.  They are:

   o    the SMI, described in RFC 1902 [6] - the mechanisms used
        for describing and naming objects for the purpose of management.

   o    the MIB-II, STD 17, RFC 1213 [5] - the core set of
        managed objects for the Internet suite of protocols.

   o    the protocol, STD 15, RFC 1157 [10] and/or RFC 1905 [9] -
        the protocol used for accessing managed information.

   Textual conventions are defined in RFC 1903 [7], and conformance
   statements are defined in RFC 1904 [8].

   The Framework permits new objects to be defined for the purpose of
   experimentation and evaluation.

1.1.  Object Definitions

   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)
   defined in the SMI.  In particular, each object type is named by an
   OBJECT IDENTIFIER, an administratively assigned name.  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 descriptor, to refer to the
   object type.












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RFC 2239          Managed Objects for IEEE 802.3 MAUs      November 1997


2.  Overview

2.1.  Relationship to RFC 1515

   This MIB is intended to be a superset of that defined by RFC 1515
   [11], 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 100 Mb/s devices

   o    auto-negotiation on interface MAUs

   o    jack management

2.2.  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 [1] and [2].  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 Mb/s Medium Attachment Units (MAUs)", and
   Annex 30A, "GDMO Specifications for 802.3 managed objects" of IEEE
   Std 802.3u-1995.  That specification includes definitions for both
   10Mb/s and 100Mb/s devices, and is essentially a superset of the
   10Mb/s definitions given by IEEE 802.3 Section 20.  This
   specification is intended to serve the same purpose: to provide for
   management of both 10Mb/s and 100Mb/s MAUs.

2.3.  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 [5].  The following
   sections identify other MIBs that such an agent should implement.

2.3.1.  Relationship to the MIB-II 'interfaces' group

   The sections of this document that define interface MAU-related
   objects specify an extension to the 'interfaces' group of MIB-II.  An
   agent implementing these interface-MAU related objects must also




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RFC 2239          Managed Objects for IEEE 802.3 MAUs      November 1997


   implement the 'interfaces' group of MIB-II.  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, RFC 1650.

   (Note that repeater ports are not represented as interfaces in the
   sense of MIB-II's 'interfaces' group.)

2.3.2.  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
   [4].  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.

2.4.  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.

3.  Definitions

   MAU-MIB DEFINITIONS ::= BEGIN

   IMPORTS
       Counter32, Integer32,
       OBJECT-TYPE, MODULE-IDENTITY, NOTIFICATION-TYPE,
       OBJECT-IDENTITY, mib-2
           FROM SNMPv2-SMI
       TruthValue, TEXTUAL-CONVENTION



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RFC 2239          Managed Objects for IEEE 802.3 MAUs      November 1997


           FROM SNMPv2-TC
       OBJECT-GROUP, MODULE-COMPLIANCE, NOTIFICATION-GROUP
           FROM SNMPv2-CONF;

   mauMod MODULE-IDENTITY
       LAST-UPDATED "9710310000Z"
       ORGANIZATION "IETF HUB MIB Working Group"
       CONTACT-INFO
           "WG E-mail: [e-mail]

                Chair: Dan Romascanu
               Postal: Madge Networks (Israel) Ltd.
                       Atidim Technology Park, Bldg. 3
                       Tel Aviv 61131, Israel
                  Tel: [phone]
                  Fax: [phone]
               E-mail: [e-mail]

               Editor: Kathryn de Graaf
               Postal: 3Com Corporation
                       118 Turnpike Rd.
                       Southborough, MA  01772
                       USA
                  Tel: [phone]
                  Fax: [phone]
               E-mail: [e-mail]"
       DESCRIPTION
               "Management information for 802.3 MAUs.

               The following references are used throughout this
               MIB module:

               [IEEE 802.3 Std]
                  refers to IEEE 802.3/ISO 8802-3 Information
                  processing systems - Local area networks -
                  Part 3: Carrier sense multiple access with
                  collision detection (CSMA/CD) access method
                  and physical layer specifications (1993),
                  and to IEEE Std 802.3u-1995, Supplement to
                  IEEE Std 802.3, clauses 22 through 29.

               [IEEE 802.3 Mgt]
                  refers to IEEE 802.3u-1995, - 10 Mb/s &
                  100 Mb/s Management, Section 30 -
                  Supplement to IEEE Std 802.3."
       ::= { snmpDot3MauMgt 6 }





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RFC 2239          Managed Objects for IEEE 802.3 MAUs      November 1997


   snmpDot3MauMgt OBJECT IDENTIFIER ::= { mib-2 26 }


   -- textual conventions

   JackType ::= TEXTUAL-CONVENTION
       STATUS     current
       DESCRIPTION
               "Common enumeration values for repeater and
               interface MAU jack types."
       SYNTAX     INTEGER {
                      other(1),
                      rj45(2),
                      rj45S(3), -- rj45 shielded
                      db9(4),
                      bnc(5),
                      fAUI(6),  -- female aui
                      mAUI(7),  -- male aui
                      fiberSC(8),
                      fiberMIC(9),
                      fiberST(10),
                      telco(11)
                  }


   dot3RpMauBasicGroup         OBJECT IDENTIFIER ::= { snmpDot3MauMgt 1 }
   dot3IfMauBasicGroup         OBJECT IDENTIFIER ::= { snmpDot3MauMgt 2 }
   dot3BroadMauBasicGroup      OBJECT IDENTIFIER ::= { snmpDot3MauMgt 3 }

   dot3IfMauAutoNegGroup       OBJECT IDENTIFIER ::= { snmpDot3MauMgt 5 }

   -- object identities for MAU types
   --  (see rpMauType and ifMauType for usage)

   dot3MauType
       OBJECT IDENTIFIER ::= { snmpDot3MauMgt 4 }

   dot3MauTypeAUI OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
               "no internal MAU, view from AUI"
       ::= { dot3MauType 1 }

   dot3MauType10Base5 OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
               "thick coax MAU (per 802.3 section 8)"
       ::= { dot3MauType 2 }



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RFC 2239          Managed Objects for IEEE 802.3 MAUs      November 1997


   dot3MauTypeFoirl OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
               "FOIRL MAU (per 802.3 section 9.9)"
       ::= { dot3MauType 3 }

   dot3MauType10Base2 OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
               "thin coax MAU (per 802.3 section 10)"
       ::= { dot3MauType 4 }

   dot3MauType10BaseT OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
               "UTP MAU (per 802.3 section 14)"
       ::= { dot3MauType 5 }

   dot3MauType10BaseFP OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
               "passive fiber MAU (per 802.3 section 16)"
       ::= { dot3MauType 6 }

   dot3MauType10BaseFB OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
               "sync fiber MAU (per 802.3 section 17)"
       ::= { dot3MauType 7 }

   dot3MauType10BaseFL OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
               "async fiber MAU (per 802.3 section 18)"