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Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter 8 Performance Monitoring
Performance Monitoring for Electrical Cards
8.5.4 DS3-12E and DS3N-12E Card Performance Monitoring Parameters
Figure 8-17 shows the signal types that support far-end PMs. Figure 8-18 shows where overhead bytes
detected on the ASICs produce performance monitoring parameters for the DS3-12E and DS3N-12E
cards.
DS3 AISS-P
Alarm Indication Signal Seconds-Path (AISS-P) is a count of seconds
containing one or more AIS defects.
DS3 UAS-P
Unavailable Seconds-Path (UAS-P) is a count of one-second intervals
during which the DS3 path is unavailable.
Table 8-15 Near-End SONET Path PMs for the DS3 and DS3N 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; each error increments the current 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. 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 (FC-P) is a count of the number of
near-end STS path failure events. A failure event begins when an AIS-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 SES-Ps,
and it continues to be unavailable until ten consecutive seconds occur that
do not qualify as SES-Ps.
Table 8-14 Near-End DS3 Path PMs for the DS3 and DS3N Cards (continued)
Parameter Definition