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Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 8 Performance Monitoring
Performance Monitoring for Optical Cards
Table 8-15 Near-End SONET Path PMs for the OC-3 Card
Parameter Definition
Note SONET path PMs will not count unless IPPM is enabled. For additional information, see the
“Intermediate-Path Performance Monitoring Reference” section on page 8-12 .
STS CV-P Near-End STS Path Coding Violations (STS CV-P) is a count of B IP
errors detected at the STS path layer (i.e., using the B3 byte). Up to eight
B IP errors can be detected per frame; each error increments the current
CV-P second register.
STS ES-P Near-End STS Path Errored Seconds (STS ES-P) is a count of the seconds
when one 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 ES-P.
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
seconds when the STS path is considered unavailable. An STS path
becomes 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.
Table 8-16 Far-End Line Layer PMs for the OC-3 Card
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.