RFC 2239 (rfc2239) - Page 3 of 43

Definitions of Managed Objects for IEEE 802

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




de Graaf, et. al.           Standards Track