Edge Products ES3528-WDM User Manual

Port Configuration

9-22

9

Transmit Multicast Packets

The total number of packets that higher-level protocols requested be 

transmitted, and which were addressed to a multicast address at this 

sub-layer, including those that were discarded or not sent. 

Transmit Broadcast Packets

The total number of packets that higher-level protocols requested be 

transmitted, and which were addressed to a broadcast address at this 

sub-layer, including those that were discarded or not sent. 

Transmit Discarded Packets

The number of outbound packets which were chosen to be discarded even 

though no errors had been detected to prevent their being transmitted. 

One possible reason for discarding such a packet could be to free up 

buffer space.

Transmit Errors

The number of outbound packets that could not be transmitted because of 

errors.

Alignment Errors

The number of alignment errors (missynchronized data packets). 

Late Collisions

The number of times that a collision is detected later than 512 bit-times 

into the transmission of a packet.

FCS Errors

A count of frames received on a particular interface that are an integral 

number of octets in length but do not pass the FCS check. This count does 

not include frames received with frame-too-long or frame-too-short error. 

Excessive Collisions

A count of frames for which transmission on a particular interface fails due 

to excessive collisions. This counter does not increment when the 

interface is operating in full-duplex mode.

Single Collision Frames

The number of successfully transmitted frames for which transmission is 

inhibited by exactly one collision.

Internal MAC Transmit Errors

A count of frames for which transmission on a particular interface fails due 

to an internal MAC sublayer transmit error. 

Multiple Collision Frames

A count of successfully transmitted frames for which transmission is 

inhibited by more than one collision.

Carrier Sense Errors

The number of times that the carrier sense condition was lost or never 

asserted when attempting to transmit a frame. 

 SQE Test Errors 

A count of times that the SQE TEST ERROR message is generated by the 

PLS sublayer for a particular interface. 

Frames Too Long

A count of frames received on a particular interface that exceed the 

maximum permitted frame size.

Deferred Transmissions

A count of frames for which the first transmission attempt on a particular 

interface is delayed because the medium was busy.

Internal MAC Receive Errors

A count of frames for which reception on a particular interface fails due to 

an internal MAC sublayer receive error. 

Table 9-4   Port Statistics (Continued)