8-21
Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter8 Performance Monito ring
Performance Monitoring for Electrical Cards
SES-V Severely Errored Seconds VT Layer (SES-V) is a count of seconds when
K (600) or more VT Path BIP errors were detected. SES-V can also be
caused by an AIS-V defect (or a lower-layer, traffic-related, near-end
defect) or an LOP-V defect.
UAS-V Unavailable Second VT Layer (UAS-V) is a count of the sec onds w hen
the VT path was unavailable. A VT path becomes unavailable when ten
consecutive seconds occur that qualify as SES-Vs, and it continues to be
unavailable until ten consecutive seconds occur that do not qualify as
SES-Vs.
Table8-11 SONET Path PMs for the DS1 and DS1N Cards
Parameter Definition
STS CV-P Near-End STS Path Coding Violations (CV-P) is a count of BIP errors
detected at the STS path layer (i.e., using the B3 byte). Up to eight BIP
errors can be detected per frame, with each error incrementin g the curr ent
CV-P second register.
STS ES-P Near-End STS Path Errored Seconds (ES-P) is a count of the seconds
when at least one STS path BIP error was detected. A n 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 (FC-P) is a count of the number of
near-end STS path failure events. A failure event begins when an A IS-P
failure, an LOP-P failure, a UNEQ-P, or a TIM-P failure is declared. A
failure event also begins 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 (SES-P) is a count of the
seconds when K (2400) or more STS path BIP 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 SES-P.
STS UAS-P Near-End STS Path Unavailable Seconds (UAS-P) is a count of the
seconds when the STS path was unavailable. An STS path becomes
unavailable when ten consecutive seconds occur that qualify as SE S-Ps,
and it continues to be unavailable until ten consecutive seconds occur that
do not qualify as SES-Ps.
Table8-10 VT Path PMs for the DS1 and DS1N Cards (continued)
Parameter Definition