Cisco ONS 15327, User Documentation

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Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 8 Performance Monitoring
Performance Monitoring for Optical Cards
STS FC-P Near-End STS Path Failure Counts (STS FC-P) is a count of the number
of near-end STS path failure events. A failure event begins with an AIS-P
failure, an LOP-P failure, a UNEQ-P failure or a TIM-P failure is
declared, or if the STS PTE that is monitoring the path supports ERDI-P
for that path. The failure event ends when these failures are cleared.
STS SES-P
Near-End STS Path Severely Errored Seconds (STS SES-P) is a count of
the seconds when K (2400) or more STS path B IP errors were detected.
An AIS-P defect (or a lower-layer, traffic-related, near-end defect) or an
LOP-P defect can also cause an STS Severely Errored Seconds Path
(SES-P).
STS UAS-P
Near-End STS Path Unavailable Seconds (STS UAS-P) is a count of the
one-second intervals when the STS path is unavailable. The STS path is
unavailable at the onset of ten consecutive seconds that qualify as
Severely Errored Seconds Path (SES-Ps), and continues to be unavailable
until the onset of ten consecutive seconds that do not qualify as SES-Ps.
The ten seconds with no SES-Ps are excluded from available time.
Table 8-28 Far-End Line Layer PMs for the OC-48 Cards
Parameter Definition
CV-L Code Violation Line (CV-L) is a count of B IP errors detected by the
far-end LTE and reported back to the near-end LTE using the REI-L
indication in the line overhead. For SONET signals at rates below OC-48,
up to 8 x N B IP errors per STS-N frame can be indicated using the REI-L.
For OC-48 signals, up to 255 B IP errors per STS-N frame can be
indicated. The current CV-L second register is incremented for each B IP
error indicated by the incoming REI-L.
ES-L Errored Seconds Line (ES-L) is a count of the seconds when at least one
line-layer B IP error was reported by the far-end LTE or an RDI-L defect
was present.
SES-L Severely Errored Seconds Line (SES-L) is a count of the seconds when K
(see GR-253-CORE for values) or more line-layer B IP errors were
reported by the far-end LTE or an RDI-L defect was present.
UAS-L UAS-L is a count of the seconds when the line is considered unavailable
at the far end. A line becomes unavailable at the onset of ten consecutive
seconds that qualify as SES-LFEs, and continues to be unavailable until
the onset of ten consecutive seconds that do not qualify as SES-LFEs.
FC-L FC-L is a count of the number of far-end line failure events. A failure
event begins when RFI-L failure is declared and ends when the RFI-L
failure clears. A failure event that begins in one period and ends in another
period is counted only in the period where it began.
Table 8-27 Near-End SONET Path PMs for the OC-48 Cards (continued)
Parameter Definition