Ethernet ("Dot3") Statistics - HP 438031-B21 - 1:10Gb Ethernet BL-c Switch Reference Manual

Ethernet ("dot3") Statistics

The following table describes the Ethernet statistics of the selected port:
Table 64 Ethernet Statistics for a Port
Statistic
Align Errors
FCS Errors
Single Collisions
Multi Collisions
Late Collisions
Excess Collisions
Internal MACErrors
Description
A count of frames received on a particular interface that is 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.
A count of frames received on a particular interface that is 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.
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 dot3StatsMultipleCollision-Frame
object.
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 the ifOutUcastPkts, ifOutMulticastPkts, or ifOutBroadcastPkts,
and is not counted by the corresponding instance of the dot3StatsSingleCollision-Frames
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 sub layer transmit error. A frame is only counted by an instance of this object if it is
not counted by the corresponding instance of the dot3StatsLateCollisions object, the
dot3StatsExcessiveCollisions object, or the dot3Stats-CarrierSenseErrors 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.
Viewing statistics
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