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- The Minutes below should be considered a rough draft. - 3/26/92 Megan
-
- Ethernet MIB Working Group
-
- Meeting of 17 March 1992
- IETF Meeting, San Diego, California
-
- Chairman: Frank Kastenholz
-
- The Ethernet MIB Working Group met at the San Diego IETF meeting on Tuesday,
- 17 March 1992.
-
- The Working Group reviewed the report on MIB variable implementation that
- had earlier been posted to the mailing list earlier (a copy is attached for
- the record).As a result of this review, the Working Group has decided to
- make the following changes to the MIB:
-
- 1) The dot3TestTdrValue object will be deprecated from the standard mib.
- There are effectively no implementations of this object, and some chips
- were reported to return an incorrect value for the TDR count.
-
- 2) The dot3StatsInRangeLengthErrors object and the
- dot3StatsOutOfRangeLengthFields object will be deprecated from the MIB.
- These objects were not widely implemented and their utility in diagnosing
- network problems was strongly questioned.
-
- 3) The dot3InitializeMac object, the dot3MacSubLayerStatus object, the
- dot3MulticastReceiveStatus object, and the dot3TxEnabled object will be
- deprecated from the MIB. These objects were not widely implemented and
- their utility in diagnosing network problems was strongly questioned.
-
- 4) The dot3StatsExcessiveDeferrals object will be deprecated from the MIB.
- Only one system implemented this object. Furthermore, its exact definition
- was called into question.
-
- 5) The dot3StatsSQETestErrors object received few implementations. However,
- the working group strongly supported its retention in the MIB on the basis
- that certain forms of transceiver and cable errors that are not uncommon
- can only be detected with this counter.
-
- 6) The collision histogram table (dot3CollTable) will be kept as an optional
- group, even though the objects are not widely implemented nor is there
- hardware support on all reported chips.
-
- The implementation data presented at the meeting is:
-
-
-
- MIB Implementation
- Variable 1 2 3 4 5 6 7 8 9 10 11 Yesses
-
- dot3InitializeMac C C Y Y Y Y Y C7 C7 N Y 6
- dot3MacSubLayerStatus C C Y Y Y Y Y C7 C7 N C 5
- dot3MulticastReceiveStatus C C Y C3 Y C C C7 C7 N C 2
- dot3TxEnabled C C Y Y Y Y Y C7 C7 N C 5
- dot3TestTdrValue C 1 C C4 C C C C4 C4 N C 1
-
- dot3StatsAlignmentErrors Y Y Y Y Y Y Y Y Y Y Y 11
- dot3StatsFCSErrors Y Y Y Y Y Y Y Y Y Y Y 11
- dot3StatsSingleCollisionFrames Y Y Y N Y Y Y Y Y Y Y 10
- dot3StatsMultipleCollisionFrames Y Y Y N Y Y Y Y Y Y Y 10
- dot3StatsSQETestErrors Y C C C Y C C C C Y C 3
- dot3StatsDeferredTransmissions Y C Y N Y Y Y Y Y Y Y 9
- dot3StatsLateCollisions C Y Y Y Y Y Y Y Y Y Y 10
- dot3StatsExcessiveCollisions Y Y Y Y Y Y Y Y Y Y Y 11
- dot3StatsInternalMacTransmitErrors Y Y Y Y Y Y Y Y Y Y Y 11
- dot3StatsCarrierSenseErrors Y C Y Y Y Y Y Y Y Y Y 10
- dot3StatsExcessiveDeferrals C C Y C C C C C C N C 1
- dot3StatsFrameTooLongs Y Y2 Y Y C Y Y Y Y Y Y 10
- dot3StatsInRangeLengthErrors C C C N5 C Y Y C C N C 2
- dot3StatsOutOfRangeLengthFields C C C C6 C C C C C N C 0
- dot3StatsInternalMacReceiveErrors Y Y Y Y Y C C Y Y Y C 8
-
- dot3CollCount Y Y C N N N N C C N Y 3
- dot3CollFrequencies Y Y C N N N N C C N Y 3
- Yesses 13 11 16 11 15 14 14 11 11 12 13
-
-
- Y Fully implemented, reports a truthful count, or
- indication of state. All values may be written to the
- variable with the expected action occurring.
-
- N Not implemented at all. Would return a noSuchName error
- if accessed.
-
- C Implemented but returns a constant value for gets and
- returns a badValue error for any set attempt to set the
- variable to a value other than this constant (writable
- variables only).
-
- Notes:
-
- 1 does not implement TDR test, but reports TDR from last
- collision!
-
- 2 Not supported by the chip, detected solely in software.
-
- 3 But set to disabled(2) -> badValue
-
- 4 Underlying TDR function not implemented on this chip.
-
- 5 Only counts frames too short though.
-
- 6 Due to Ethernet encapsulation
-
- 7 Implementation does not support set operations but
- reports the correct value for these.
-
- Implementation Vendor Chip
- 1 1 Intel 82586
- 2 1 Fujitsu 86950
- 3 2 Sonic
- 4 3 AMD Lance
- 5 4 National NIC 8390C
- 6 4 Intel 82596
- 7 4 AMD Lance
- 8 5 AMD Lance
- 9 5 AMD ILACC
- 10 6 AMD Lance
- 11 7 Intel 82586
-