Nortel 8100 用户指南

314723-D Rev 01

 

CarrierSenseErrors

The number of times that the carrier sense condition was lost 

or never asserted when attempting to transmit a frame on a 

particular interface. The count represented by an instance of 

this object is incremented at most once per transmission 

attempt, even if the carrier sense condition fluctuates during 

a transmission attempt.

FrameTooLongs

A count of frames received on a particular interface that 

exceed 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.

SQETestErrors

A count of times that the SQE TEST ERROR message is 

generated by the PLS sublayer for a particular interface. The 

SQE TEST ERROR message is defined in section 7.2.2.2.4 

of ANSI/IEEE 802.3-1985 and its generation described in 

section 7.2.4.6 of the same document.

DeferredTransmissions

A count of frames for which the first transmission attempt on 

a particular interface is delayed because the medium is busy. 

The count represented by an instance of this object does not 

include frames involved in collisions.

SingleCollisionFrames

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 either the 

ifOutUcastPkts, ifOutMulticastPkts, or ifOutBroadcastPkts, 

objects and is not counted by the corresponding instance

of the dot3StatsMultipleCollisionFrames object.

MultipleCollisionFrames

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, 

objects and is not counted by the corresponding instance 

of the dot3StatsSingleCollisionFrames object.

LateCollisions

The number of times that a collision is detected on a 

particular interface later than 512 bit-times into the 

transmission of a packet; 512 corresponds to 51.2 

microseconds on a 10 Mb/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.

Ethernet Errors tab fields (continued)