HP 10GB ETHERNET BL-C SWITCH BMD00022 Command Reference Manual page 78

Table 48
Ethernet statistics for port
Statistics
dot3StatsMultipleCollisionFrames
dot3StatsLateCollisions
dot3StatsExcessiveCollisions
dot3StatsInternalMacTransmitErrors
dot3StatsFrameTooLongs
Description
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.
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 Mbps 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.
A count of frames for which transmission on a particular
interface fails due to excessive collisions.
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 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.
A count of frames received on a particular interface that
exceeds 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 obtained
are, according to the conventions of IEEE 802.3 Layer
Management, counted exclusively according to the error
status presented to the LLC.
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