Statistics Commands

Table 48 Ethernet statistics for port

 

 

 

Statistics

Description

 

 

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 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.

 

 

dot3StatsExcessiveCollisions

A count of frames for which transmission on a particular interface

 

fails due to excessive collisions.

 

 

dot3StatsInternalMacTransmitErrors

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.

 

 

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