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Monitoring and Testing
4-73163-A2-GB20-10 March 1999
Table 4-3
(2 of 2)
Performance Registers
Register Totals DescriptionInterval Description
UAS The number of unavailable seconds for the
current interval. An unavailable second is any
one second interval when service is
unavailable. (Detection occurs with
10 consecutive unavailable seconds.) The
maximum is 900 seconds.
The total number of unavailable seconds for the
previous
x
hours, where
x
is 24 hours for aggregate
performance and 8 hours for port performance.
SES The number of severely errored seconds for the
current interval. A severely errored second is
any second with 320 or more CRC errors, or
any second with one or more OOF events. The
maximum is 900 seconds.
The total number of severely errored seconds for the
previous
x
hours, where
x
is 24 hours for aggregate
performance and 8 hours for port performance.
BES The number of bursty errored seconds for the
current interval. A bursty errored second is any
second with more than one, but less than 320,
CRC errors. The maximum is 900 seconds.
The total number of bursty errored seconds for the
previous
x
hours, where
x
is 24 hours for aggregate
performance and 8 hours for port performance.
LOFC The loss of frame count for the current interval.
This is a count of the number of times that an
LOF is declared. The maximum count is 255.
The total loss of frame count for the previous
x
hours, where
x
is 24 hours for aggregate
performance and 8 hours for port performance.
CSS The number of controlled slip seconds for the
current interval.
The total number of controlled slip seconds for the
previous
x
hours, where
x
is 24 hours for aggregate
performance and 8 hours for port performance.
StEvnt The status events register records whether one
or more of the following events have occurred
at least once during the interval. The event is
identified by a letter as follows:
Y – A Yellow Alarm signal has been received
on the network interface.
E – The Excessive Error Rate threshold has
been exceeded.
F – A Frame Synchronization Bit Error has
been detected.
V – A Bipolar Violation has been detected.
If none of these events occurred during the
interval, StEvnt=none will be displayed.
N/A