rfc1398.txt

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          dot3CollCount   OBJECT-TYPE
               SYNTAX    INTEGER (1..16)
               ACCESS    read-only
               STATUS    mandatory
               DESCRIPTION
                         "The number of per-frame media collisions for
                         which a particular collision histogram cell
                         represents the frequency on a particular
                         interface."
               ::= { dot3CollEntry 2 }


          dot3CollFrequencies   OBJECT-TYPE
               SYNTAX    Counter
               ACCESS    read-only
               STATUS    mandatory
               DESCRIPTION
                         "A count of individual MAC frames for which the
                         transmission (successful or otherwise) on a
                         particular interface is accompanied by a
                         particular number of media collisions."
               ::= { dot3CollEntry 3 }


4.3.  802.3 Tests


      --  802.3 Tests

      -- The ifExtnsTestTable defined in RFC 1229 provides a common
      -- means for a manager to test any interface corresponding to



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      -- a value of ifIndex.

      -- At this time, one well known test (testFullDuplexLoopBack) is
      -- defined in RFC 1229.  For ethernet-like interfaces, this test
      -- configures the MAC chip and executes an internal loopback
      -- test of memory and the MAC chip logic.  This loopback test can
      -- only be executed if the interface is offline.  Once the test
      -- has completed, the MAC chip should be reinitialized for network
      -- operation, but it should remain offline.

      -- If an error occurs during a test, the object ifExtnsTestResult
      -- (defined in RFC 1229) will be set to failed(7).  The following
      -- two OBJECT IDENTIFIERs may be used to provided more
      -- information as values for the object ifExtnsTestCode in
      -- RFC 1229:

          dot3Errors             OBJECT IDENTIFIER ::= { dot3 7 }

                               -- couldn't initialize MAC chip for test
          dot3ErrorInitError     OBJECT IDENTIFIER ::= { dot3Errors 1 }

                                -- expected data not received (or not
                                -- received correctly) in loopback test
          dot3ErrorLoopbackError OBJECT IDENTIFIER ::= { dot3Errors 2 }

       -- Tests
        --  TDR Test

       -- Another test, specific to ethernet-like interfaces with the
       -- exception of 10BaseT and 10BaseF, is Time-domain Reflectometry
           (TDR).
       -- The TDR value may be useful in determining the approximate
           distance
       -- to a cable fault.  It is advisable to repeat this test to
           check for
       -- a consistent resulting TDR value, to verify that there is a
          fault.

          dot3Tests   OBJECT IDENTIFIER ::= { dot3 6 }
          dot3TestTdr OBJECT IDENTIFIER ::= { dot3Tests 1 }

       -- A TDR test returns as its result the time interval, measured
       -- in 10 MHz ticks or 100 nsec units, between the start of
       -- TDR test transmission and the subsequent detection of a
       -- collision or deassertion of carrier.  On successful completion
       -- of a TDR test, the appropriate instance of ifExtnsTestResult
       -- contains the OBJECT IDENTIFIER of the MIB object which
       -- contains the value of this time interval.



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4.4.  802.3 Hardware Chipsets


       --  802.3 Hardware Chipsets

       -- The object ifExtnsChipSet is provided in RFC 1229 to identify
       -- the MAC hardware used to communcate on an interface.  The
       -- following hardware chipsets are provided for 802.3:

  dot3ChipSets          OBJECT IDENTIFIER ::= { dot3 8 }
  dot3ChipSetAMD        OBJECT IDENTIFIER ::= { dot3ChipSets 1 }
  dot3ChipSetAMD7990    OBJECT IDENTIFIER ::= { dot3ChipSetAMD 1 }
  dot3ChipSetAMD79900   OBJECT IDENTIFIER ::= { dot3ChipSetAMD 2 }

  dot3ChipSetIntel      OBJECT IDENTIFIER ::= { dot3ChipSets 2 }
  dot3ChipSetIntel82586 OBJECT IDENTIFIER ::= { dot3ChipSetIntel 1 }
  dot3ChipSetIntel82596 OBJECT IDENTIFIER ::= { dot3ChipSetIntel 2 }
  dot3ChipSetSeeq       OBJECT IDENTIFIER ::= { dot3ChipSets 3 }
  dot3ChipSetSeeq8003   OBJECT IDENTIFIER ::= { dot3ChipSetSeeq 1 }

  dot3ChipSetNational      OBJECT IDENTIFIER ::= { dot3ChipSets 4 }
  dot3ChipSetNational8390  OBJECT IDENTIFIER ::=
                                           { dot3ChipSetNational 1 }
  dot3ChipSetNationalSonic OBJECT IDENTIFIER ::=
                                           { dot3ChipSetNational 2 }

  dot3ChipSetFujitsu       OBJECT IDENTIFIER ::= { dot3ChipSets 5 }
  dot3ChipSetFujitsu86950  OBJECT IDENTIFIER ::=
                                           { dot3ChipSetFujitsu 1 }
  dot3ChipSetFujitsu86960  OBJECT IDENTIFIER ::=
                                           { dot3ChipSetFujitsu 2 }

       -- For those chipsets not represented above, OBJECT IDENTIFIER
       -- assignment is required in other documentation, e.g., assignment
       -- within that part of the registration tree delegated to
       -- individual enterprises (see RFC 1155).

          END

5.  Change Log

  (1)  Replace old "Historical Perspective" boilerplate with the
       new "The Network Management Framework" boilerplate.

  (2)  Remove the "slime text".

  (3)  Updated the reference to the Interface Extensions mib to
       reflect its new RFC status.



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  (4)  Change the status of the memo section to hold the new
       suggested text.

  (5)  References in ASN.1 comments were changed from the [#]
       form to name the actual document being referred to. These
       references are now meaningful when the ASN.1 is read
       outside of the RFC.

  (6)  The IMPORTS section of the ASN.1 has been updated to
       reflect that the OBJECT-TYPE macro is imported from RFC-
       1212.

  (7)  The the Generic Ethernet-like group, containing
       dot3Index, dot3InitializeMac, dot3MacSubLayerStatus,
       dot3MulticastReceiveStatus, dot3TxEnabled, and
       dot3TestTdrValue has been deprecated as a result of the
       implementation experience presented at the San Diego IETF
       meeting.

  (8)  dot3StatsInRangeLengthErrors and
       dot3StatsOutOfRangeLengthFields have been deprecated as a
       result of the implementation experience presented at the
       San Diego IETF meeting.

  (9)  Update the acknowledgements section to reflect this
       document's history, etc.

  (10) REFERENCE clauses have been added to all of the MIB
       objects which are being retained.

  12 August 1992

  (1)  Removed all deprecated objects.

  (2)  Rephrased the description of the TDR test OID to reflect
       the fact that dot3TestTdrValue is no more.
       ifExtnsTestResult still points to the object containing
       the result, the text simply does not refer to
       dot3TestTdrValue. I could have deleted the Test, but the
       OID should then remain reserved. I figured that it would
       be just as easy to rephrase the definition of the test.

  13 august 1992

  (1)  Add fuji. 86960






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6.  Acknowledgements

   This document was produced by the Ethernet MIB Working Group.

   This document is based on the Proposed Standard Ethernet MIB, RFC
   1284 [14], of which John Cook of Chipcom was the editor.  The
   Ethernet MIB Working Group gathered implementation experience of the
   variables specified in RFC 1284 and used that information to develop
   this revised MIB.

   RFC 1284, in turn, is based on a document written by Frank Kastenholz
   of Interlan entitled IEEE 802.3 Layer Management Draft M compatible
   MIB for TCP/IP Networks [10].  This document has been modestly
   reworked, initially by the SNMP Working Group, and then by the
   Transmission Working Group, to reflect the current conventions for
   defining objects for MIB interfaces.  James Davin, of the MIT
   Laboratory for Computer Science, and Keith McCloghrie of Hughes LAN
   Systems, contributed to later drafts of this memo. Marshall Rose of
   Performance Systems International, Inc. converted the document into
   its current concise format. Anil Rijsinghani of DEC contributed text
   that more adequately describes the TDR test.  Thanks to Frank
   Kastenholz of Interlan and Louis Steinberg of IBM for their
   experimentation.

7.  References

   [1] Cerf, V., "IAB Recommendations for the Development of Internet
       Network Management Standards", RFC 1052, NRI, April 1988.

   [2] Cerf, V., "Report of the Second Ad Hoc Network Management Review
       Group", RFC 1109, NRI, August 1989.

   [3] Rose M., and K. McCloghrie, "Structure and Identification of
       Management Information for TCP/IP-based internets", STD 16, RFC
       1155, Performance Systems International, Hughes LAN Systems, May
       1990.

   [4] McCloghrie K., and M. Rose, "Management Information Base for
       Network Management of TCP/IP-based internets", RFC 1156, Hughes
       LAN Systems, Performance Systems International, May 1990.

   [5] Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple
       Network Management Protocol", STD 15, RFC 1157, SNMP Research,
       Performance Systems International, Performance Systems
       International, MIT Laboratory for Computer Science, May 1990.

   [6] Rose M., Editor, "Management Information Base for Network
       Management of TCP/IP-based internets: MIB-II", STD 17, RFC 1213,



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       Performance Systems International, March 1991.

   [7] Information processing systems - Open Systems Interconnection -
       Specification of Abstract Syntax Notation One (ASN.1),
       International Organization for Standardization, International
       Standard 8824, December 1987.

   [8] Information processing systems - Open Systems Interconnection -
       Specification of Basic Encoding Rules for Abstract Notation One
       (ASN.1), International Organization for Standardization,
       International Standard 8825, December 1987.

   [9] IEEE, "IEEE 802.3 Layer Management", November 1988.

  [10] Kastenholz, F., "IEEE 802.3 Layer Management Draft compatible MIB
       for TCP/IP Networks", electronic mail message to mib-
       [e-mail], 9 June 1989.

  [11] McCloghrie, K., Editor, Extensions to the Generic-Interface MIB,
       RFC 1229, Hughes LAN Systems, Inc., May 1991.

  [12] IEEE, "Carrier Sense Multiple Access with Collision Detection
       (CSMA/CD) Access Method and Physical Layer Specifications",
       ANSI/IEEE Std 802.3-1985.

  [13] Rose, M., and K. McCloghrie, Editors, "Concise MIB Definitions",
       STD 16, RFC 1212, Performance Systems International, Hughes LAN
       Systems, March 1991.

  [14] Cook, J., Editor, "Definitions of Managed Objects for Ethernet-
       Like Interface Types", RFC 1284, Chipcom Corporation, December
       1991.

8.  Security Considerations

   Security issues are not discussed in this memo.

9.  Author's Address

   Frank Kastenholz
   2 High Street
   North Andover, MA 01845-2620

   Phone: [phone]
   EMail: [e-mail]






Kastenholz                                                     [Page 17]