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4-9
3160-A2-GB21-80
March 1999
Table 4-3. Performance Registers (2 of 3)
Register Totals DescriptionInterval Description
VldIntvl N/A Valid interval total. Records the
number of valid 15-minute intervals
in the previous
x
hours, where
x
is
24 hours for aggregate
performance and 8 hours for port
performance. This register is not
valid for the current interval.
ES The number of errored seconds for
the current interval. An errored
second is any second with one or
more ESF error events. The
maximum is 900 seconds.
The total number of errored
seconds for the previous
x
hours,
where
x
is 24 hours for aggregate
performance and 8 hours for port
performance.
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
(Not valid
for Port
registers.)
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.