Managing Ethernet MicroLAN Modules

Frames (Blue)

 

Frames

The total number of packets (both good and error) processed

 

by the selected repeater, board, or port.

Nothing

The Frames scale is not currently measuring any statistics.

Total Errors (Red)

 

Total Errors

The total number of errors of any kind processed by the

 

selected repeater, board, or port.

Collisions

The total number of collisions (combined transmit and receive)

 

detected by the selected repeater, board, or port.

CRC Errors

The total number of packets with CRC (Cyclical Redundancy

 

Check) errors that the selected repeater, board, or port has

 

received from the network.

Runt Packets

The number of runt packets detected by the selected repeater,

 

board, or port. A runt frame is one that is less than the

 

minimum Ethernet frame size of 64 bytes.

Giant Packets

The number of giant packets detected by the selected repeater,

 

board, or port. A giant frame exceeds the maximum Ethernet

 

frame size of 1518 bytes (excluding the preamble).

Algn. Errors

The number of misaligned packets detected by the selected

 

repeater, board, or port. Misaligned packets are those which

 

contain a non-integral number of bytes; they can result from a

 

MAC layer packet formation problem, or from a cabling

 

problem that is corrupting or losing data. Alignment errors are

 

also known as framing errors.

OOW Collns.

The number of collisions out of the standard collision window

 

(51.2 µs) experienced by the selected repeater, board, or port.

 

There are two conditions which can cause this type of error to

 

occur: either the network’s physical length exceeds IEEE 802.3

 

specifications, or a node on the net is transmitting without first

 

listening for carrier sense (and beginning its illegal

 

transmission more than 51.2 µs after the first station began

 

transmitting).

Nothing

The Errors scale is not currently monitoring error packets.

NOTE

For more detailed definitions of these statistics and information on the possible network conditions they represent, consult the Enterasys Network Troubleshooting Guide, included with this package.

Repeater Statistics

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Enterasys Networks 6000, Matrix E7 manual Frames Blue, Total Errors Red