rfc1623.txt

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       }

       dot3StatsIndex   OBJECT-TYPE
            SYNTAX      INTEGER
            ACCESS      read-only
            STATUS      mandatory
            DESCRIPTION
              "An index value that uniquely identifies an
              interface to an ethernet-like medium.  The
              interface identified by a particular value of
              this index is the same interface as identified
              by the same value of ifIndex."
            ::= { dot3StatsEntry 1 }

       dot3StatsAlignmentErrors   OBJECT-TYPE
            SYNTAX     Counter
            ACCESS     read-only
            STATUS     mandatory
            DESCRIPTION
             "A count of frames received on a particular
             interface that are not an integral number of
             octets in length and do not pass the FCS check.

             The count represented by an instance of this
             object is incremented when the alignmentError
             status is returned by the MAC service to the
             LLC (or other MAC user). Received frames for
             which multiple error conditions obtain are,
             according to the conventions of IEEE 802.3
             Layer Management, counted exclusively according
             to the error status presented to the LLC."
            REFERENCE
            "IEEE 802.3 Layer Management"
            ::= { dot3StatsEntry 2 }



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RFC 1623                   Ethernet-Like MIB                    May 1994


       dot3StatsFCSErrors   OBJECT-TYPE
            SYNTAX      Counter
            ACCESS      read-only
            STATUS      mandatory
            DESCRIPTION
            "A count of frames received on a particular
            interface that are an integral number of octets
            in length but do not pass the FCS check.

            The count represented by an instance of this
            object is incremented when the frameCheckError
            status is returned by the MAC service to the
            LLC (or other MAC user). Received frames for
            which multiple error conditions obtain are,
            according to the conventions of IEEE 802.3
            Layer Management, counted exclusively according
            to the error status presented to the LLC."
            REFERENCE
            "IEEE 802.3 Layer Management"
            ::= { dot3StatsEntry 3 }

       dot3StatsSingleCollisionFrames   OBJECT-TYPE
            SYNTAX      Counter
            ACCESS      read-only
            STATUS      mandatory
            DESCRIPTION
            "A count of successfully transmitted frames on
            a particular interface for which transmission
            is inhibited by exactly one collision.

            A frame that is counted by an instance of this
            object is also counted by the corresponding
            instance of either the ifOutUcastPkts,
            ifOutMulticastPkts, or ifOutBroadcastPkts,
            and is not counted by the corresponding
            instance of the dot3StatsMultipleCollisionFrames
            object."
            REFERENCE
            "IEEE 802.3 Layer Management"
            ::= { dot3StatsEntry 4 }

       dot3StatsMultipleCollisionFrames   OBJECT-TYPE
            SYNTAX      Counter
            ACCESS      read-only
            STATUS      mandatory
            DESCRIPTION
            "A count of successfully transmitted frames on
            a particular interface for which transmission



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RFC 1623                   Ethernet-Like MIB                    May 1994


             is inhibited by more than one collision.

            A frame that is counted by an instance of this
            object is also counted by the corresponding
            instance of either the ifOutUcastPkts,
            ifOutMulticastPkts, or ifOutBroadcastPkts,
            and is not counted by the corresponding
            instance of the dot3StatsSingleCollisionFrames
            object."
            REFERENCE
            "IEEE 802.3 Layer Management"
            ::= { dot3StatsEntry 5 }

       dot3StatsSQETestErrors   OBJECT-TYPE
            SYNTAX     Counter
            ACCESS     read-only
            STATUS     mandatory
            DESCRIPTION
            "A count of times that the SQE TEST ERROR
            message is generated by the PLS sublayer for a
            particular interface. The SQE TEST ERROR
            message is defined in section 7.2.2.2.4 of
            ANSI/IEEE 802.3-1985 and its generation is
            described in section 7.2.4.6 of the same
            document."
            REFERENCE
            "ANSI/IEEE Std 802.3-1985 Carrier Sense
            Multiple Access with Collision Detection Access
            Method and Physical Layer Specifications"
            ::= { dot3StatsEntry 6 }

       dot3StatsDeferredTransmissions   OBJECT-TYPE
            SYNTAX      Counter
            ACCESS      read-only
            STATUS      mandatory
            DESCRIPTION
            "A count of frames for which the first
            transmission attempt on a particular interface
            is delayed because the medium is busy.

            The count represented by an instance of this
            object does not include frames involved in
            collisions."
            REFERENCE
            "IEEE 802.3 Layer Management"
            ::= { dot3StatsEntry 7 }

       dot3StatsLateCollisions   OBJECT-TYPE



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            SYNTAX      Counter
            ACCESS      read-only
            STATUS      mandatory
            DESCRIPTION
            "The number of times that a collision is
            detected on a particular interface later than
            512 bit-times into the transmission of a
            packet.

            Five hundred and twelve bit-times corresponds
            to 51.2 microseconds on a 10 Mbit/s system. A
            (late) collision included in a count
            represented by an instance of this object is
            also considered as a (generic) collision for
            purposes of other collision-related
            statistics."
            REFERENCE
            "IEEE 802.3 Layer Management"
            ::= { dot3StatsEntry 8 }

       dot3StatsExcessiveCollisions   OBJECT-TYPE
            SYNTAX    Counter
            ACCESS    read-only
            STATUS    mandatory
            DESCRIPTION
            "A count of frames for which transmission on a
            particular interface fails due to excessive
            collisions."
            REFERENCE
            "IEEE 802.3 Layer Management"
            ::= { dot3StatsEntry 9 }


       dot3StatsInternalMacTransmitErrors   OBJECT-TYPE
            SYNTAX    Counter
            ACCESS    read-only
            STATUS    mandatory
            DESCRIPTION
            "A count of frames for which transmission on a
            particular interface fails due to an internal
            MAC sublayer transmit error. A frame is only
            counted by an instance of this object if it is
            not counted by the corresponding instance of
            either the dot3StatsLateCollisions object, the
            dot3StatsExcessiveCollisions object, or the
            dot3StatsCarrierSenseErrors object.

            The precise meaning of the count represented by



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RFC 1623                   Ethernet-Like MIB                    May 1994


            an instance of this object is implementation-
            specific.  In particular, an instance of this
            object may represent a count of transmission
            errors on a particular interface that are not
            otherwise counted."
            REFERENCE
            "IEEE 802.3 Layer Management"
            ::= { dot3StatsEntry 10 }

       dot3StatsCarrierSenseErrors   OBJECT-TYPE
            SYNTAX    Counter
            ACCESS    read-only
            STATUS    mandatory
            DESCRIPTION
            "The number of times that the carrier sense
            condition was lost or never asserted when
            attempting to transmit a frame on a particular
            interface.

            The count represented by an instance of this
            object is incremented at most once per
            transmission attempt, even if the carrier sense
            condition fluctuates during a transmission
            attempt."
            REFERENCE
            "IEEE 802.3 Layer Management"
            ::= { dot3StatsEntry 11 }

       -- { dot3StatsEntry 12 } is not assigned

       dot3StatsFrameTooLongs   OBJECT-TYPE
            SYNTAX    Counter
            ACCESS    read-only
            STATUS    mandatory
            DESCRIPTION
            "A count of frames received on a particular
            interface that exceed the maximum permitted
            frame size.

            The count represented by an instance of this
            object is incremented when the frameTooLong
            status is returned by the MAC service to the
            LLC (or other MAC user). Received frames for
            which multiple error conditions obtain are,
            according to the conventions of IEEE 802.3
            Layer Management, counted exclusively according
            to the error status presented to the LLC."
            REFERENCE



Kastenholz                                                     [Page 11]

RFC 1623                   Ethernet-Like MIB                    May 1994


            "IEEE 802.3 Layer Management"
            ::= { dot3StatsEntry 13 }

       -- { dot3StatsEntry 14 } is not assigned

       -- { dot3StatsEntry 15 } is not assigned

       dot3StatsInternalMacReceiveErrors   OBJECT-TYPE
            SYNTAX    Counter
            ACCESS    read-only
            STATUS    mandatory
            DESCRIPTION
            "A count of frames for which reception on a
            particular interface fails due to an internal
            MAC sublayer receive error. A frame is only
            counted by an instance of this object if it is
            not counted by the corresponding instance of
            either the dot3StatsFrameTooLongs object, the
            dot3StatsAlignmentErrors object, or the
            dot3StatsFCSErrors object.

            The precise meaning of the count represented by
            an instance of this object is implementation-
            specific.  In particular, an instance of this
            object may represent a count of receive errors
            on a particular interface that are not
            otherwise counted."
            REFERENCE
            "IEEE 802.3 Layer Management"
            ::= { dot3StatsEntry 16 }

       dot3StatsEtherChipSet   OBJECT-TYPE
            SYNTAX        OBJECT IDENTIFIER
            ACCESS        read-only
            STATUS        mandatory
            DESCRIPTION
            "This object contains an OBJECT IDENTIFIER
            which identifies the chipset used to
            realize the interface. Ethernet-like
            interfaces are typically built out of
            several different chips. The MIB implementor
            is presented with a decision of which chip
            to identify via this object. The implementor
            should identify the chip which is usually
            called the Medium Access Control chip.
            If no such chip is easily identifiable,
            the implementor should identify the chip
            which actually gathers the transmit



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RFC 1623                   Ethernet-Like MIB                    May 1994


            and receive statistics and error
            indications. This would allow a
            manager station to correlate the
            statistics and the chip generating
            them, giving it the ability to take
            into account any known anomalies
            in the chip."
            ::= { dot3StatsEntry 17 }

       -- the Ethernet-like Collision Statistics group

       -- Implementation of this group is optional; it is appropriate
       -- for all systems which have the necessary metering

       dot3CollTable  OBJECT-TYPE
            SYNTAX    SEQUENCE OF Dot3CollEntry
            ACCESS    not-accessible
            STATUS    mandatory
            DESCRIPTION
            "A collection of collision histograms for a
            particular set of interfaces."
            ::= { dot3 5 }


       dot3CollEntry  OBJECT-TYPE
            SYNTAX    Dot3CollEntry
            ACCESS    not-accessible
            STATUS    mandatory
            DESCRIPTION
            "A cell in the histogram of per-frame
            collisions for a particular interface.  An
            instance of this object represents the
            frequency of individual MAC frames for which
            the transmission (successful or otherwise) on a