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Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 8 Performance Monitoring
Performance Monitoring for Optical Cards
Table 8-21 Near-End Protection-Switching Path PMs for the OC-12 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 at least one STS path B IP error was 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
one-second intervals when the STS path is unavailable. An 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 occur that do not qualify as
SES-Ps. The ten seconds with no SES-Ps are excluded from unavailable
time.
Table 8-22 Far-End Line Layer PMs for the OC-12 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.