Token Ring Statistics

The Station Statistics Window Soft Error Fields

The following fields break down soft errors for the selected station.

Line Errors

The count of line errors detected by the selected station port. This error indicates a non-data bit between the starting and ending delimiters of data, or a frame check sequence error.

Burst Errors

The count of burst errors detected by the selected station port. This error indicates a bit information-encoding error when there are no transitions between 0 and 1 over five half-bit times.

A.C. Errors

The number of Protocol Data Units (PDUs) containing errors in the A or C bits detected by the selected station port.

Abort Sequences

The number of times the selected port has transmitted abort sequences during transmission.

Internal Errors

The number of recoverable internal errors detected by the selected port, indicating that its attached station is in marginal operating condition.

Lost Frames

The number of frames that the selected port has transmitted that have not returned because the Timer Return to Repeat (TRR) timer has expired.

Congestion Errors

The number of times the selected port has not been able to copy a PDU addressed to it because of a lack of internal buffering.

F.C. Errors

The number of PDU addressed to the selected station that have the A bits already set to 1, which indicates a possible electrical line disturbance, or a duplicate address on the ring.

Token Errors

The number of times the selected station, while acting as the active monitor, has detected an error that required the transmission of a token.

Port Level Statistics

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Enterasys Networks MicroMMAC-T manual Station Statistics Window Soft Error Fields, Line Errors