Command Reference Guide

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The following table describes the Ethernet statistics for a selected port:
Table 48 Ethernet statistics for port
Statistics
Description
dot3StatsAlignmentErrors
A count of frames received on a particular interface that
are not an integral number of octets in length and do not
pass the Frame Check Sequence (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 Logical Link Control (LLC) (or other
MAC user).
Received frames for which multiple error conditions
obtained are, according to the conventions of IEEE 802.3
Layer Management, counted exclusively according to
the error status presented to the LLC.
dot3StatsFCSErrors
A count of frames received on a particular interface that
are an integral number of octets in length but do not pass
the Frame Check Sequence (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
obtained are, according to the conventions of IEEE 802.3
Layer Management, counted exclusively according to
the error status presented to the LLC.
dot3StatsSingleCollisionFrames
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 the
ifOutUcastPkts, ifOutMulticastPkts, or ifOutBroadcastPkts,
and is not counted by the corresponding instance of the
dot3StatsMultipleCollisionFrame object.
dot3StatsMultipleCollisionFrames
A count of successfully transmitted frames on a particular
interface for which transmission 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.
dot3StatsLateCollisions
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.
dot3StatsExcessiveCollisions
A count of frames for which transmission on a particular
interface fails due to excessive collisions.