Table of Contents
Advertisement
Chapter 8
Performance Monitoring
Table 8-38 Near-End Line Layer PMs for the OC-12, OC-48, and OC-192 Cards (continued)
Parameter
PSC-S
PSD-S
PSC-R
PSD-R
Table 8-39 Near-End SONET Path PMs for the OC-12, OC-48, and OC-192 Cards
Parameter
Note
STS CV-P
STS ES-P
STS FC-P
STS SES-P
STS UAS-P
November 2001
Definition
In a 4-fiber BLSR, Protection Switching Count-Span (PSC-S) is a count
of the number of times service switches from a working line to a
protection line plus the number of times it switches back to the working
line. A count is only incremented if span switching is used.
In a 4-fiber BLSR, Protection Switching Duration-Span (PSD-S) is a
count of the seconds that the protection line was used to carry service. A
count is only incremented if span switching is used.
In a 4-fiber BLSR, Protection Switching Count-Ring (PSC-R) is a count
of the number of times service switches from a working line to a
protection line plus the number of times it switches back to a working line.
A count is only incremented if ring switching is used.
In a 4-fiber BLSR, Protection Switching Duration-Ring (PSD-R) is a
count of the seconds that the protection line was used to carry service. A
count is only incremented if ring switching is used.
Definition
SONET path PMs will not count unless IPPM is enabled. For additional information, see the
"Enable Intermediate-Path Performance Monitoring" procedure on page
IPPM feature is not supported in Software R3.1. However, SONET path PMs can be monitored
by logging into the far-end node directly.
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; each error increments the current CV-P
second register.
Near-End STS Path Errored Seconds (ES-P) is a count of the seconds
when at least one STS path BIP 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.
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 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.
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.
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 SES-Ps,
and it continues to be unavailable until ten consecutive seconds occur that
do not qualify as SES-Ps.
Performance Monitoring for Optical Cards
Cisco ONS 15454 Installation and Operations Guide
7-25. The far-end
8-41
Advertisement
Table of Contents
