Nortel Networks 214393-A manual 102Chapter 4 Setting up MultiLink Trunk ports, Field, Description

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102Chapter 4 Setting up MultiLink Trunk ports

102Chapter 4 Setting up MultiLink Trunk ports

Table 39 describes the fields in the Ethernet Errors tab.

Table 39 Ethernet Errors tab fields

Field

Description

 

 

AlignmentErrors

A count of frames received on a particular MLT that are not an

 

integral number of octets in length and do not pass the 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 LLC (or other MAC user). Received frames

 

for which multiple error conditions occur are, according to the

 

conventions of IEEE 802.3 Layer Management, counted

 

exclusively according to the error status presented to the LLC.

 

 

FCSErrors

A count of frames received on an MLT that are an integral

 

number of octets in length but do not pass the 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 occur are, according to the

 

conventions of IEEE 802.3 Layer Management, counted

 

exclusively according to the error status presented to the LLC.

 

 

IMacTransmitError

A count of frames for which transmission on a particular MLT

 

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 LateCollisions object,

 

the ExcessiveCollisions object, or the CarrierSenseErrors

 

object.

 

 

IMacReceiveError

A count of frames for which reception on a particular MLT fails

 

due to an internal MAC sublayer receive error. A frame is only

 

counted by an instance of this object if it is not counted by the

 

corresponding instance of either the FrameTooLongs object,

 

the AlignmentErrors object, or the FCSErrors 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 receive errors

 

on a particular interface that are not otherwise counted.

 

 

CarrierSenseErrors

The number of times that the carrier sense condition was lost or

 

never asserted when attempting to transmit a frame on a

 

particular MLT. 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.

 

 

214393-A

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Nortel Networks 214393-A 102Chapter 4 Setting up MultiLink Trunk ports, Ethernet Errors tab fields, Field, Description