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Path tab fields


Field Description
ESs
Errored Second (ES) is a second with one or more Coding Violations or one or more incoming defects, for example, SEF, LOS, AIS, or LOP.
SESs
Severely Errored Second (SES) is a second with x or more Coding Violations (CV), or a second with at least one or more incoming defects.

The value of x is defined for a given Bit Error Rate (BER) as outlined in Annex 50A of the IEEE 802.3ae specification1.
CVs
Coding Violations (CV) are Bit Interleaved Parity (BIP) errors that are detected in the incoming signal. CV counters are incremented for each BIP error detected.
UASs
Number of seconds that the interface is unavailable.
1 The default Path SES threshold of 2400 corresponds to a situation where 30% of all of the SPEs being received have parity errors detected via the Path BIP checks.


See also


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