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Command Line Interface 48
Ethernet statistics
Command: /stats/port <port number>/ether
Ethernet statistics for port 1:
dot3StatsAlignmentErrors: 0
dot3StatsFCSErrors: 0
dot3StatsSingleCollisionFrames: 0
dot3StatsMultipleCollisionFrames: 0
dot3StatsLateCollisions: 0
dot3StatsExcessiveCollisions: 0
dot3StatsInternalMacTransmitErrors: 0
dot3StatsFrameTooLongs: 0
dot3StatsInternalMacReceiveErrors: 0
The following table describes the Ethernet statistics for a selected port:
Table 37 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.