Cisco Systems 15454M6DC 8.6 Performance Monitoring for Optical Cards

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Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter8 Performance Monito ring
Performance Monitoring for Optical Cards
8.6 Performance Monitoring for Optical Cards
The following sections define performance monitoring param eters and definitions for the OC-3, OC-12,
OC-48, and OC-192.
8.6.1 OC-3 Card Performance Monitoring Parameters
Figure 8-21 shows where overhead bytes detected on the ASICs produce performance monitori ng
parameters for the OC-3 card.
Table8-28 Far-End VT PMs for the DS3XM-6 Card
Parameter Definition
CV-V Code Violation VT Layer (CV-V) is a count of the BIP errors detected at
the VT path layer. Up to two BIP errors can be detected per VT
superframe; each error increments the current CV-V second register.
ES-V Errored Seconds VT Layer (ES-V) is a count of the seconds when at least
one VT Path BIP error was detected. An AIS-V defect (or a lower-layer,
traffic-related, near-end defect) or an LOP-V defect can also cause an
ES-V.
SES-V Severely Errored Seconds VT Layer (SES-V) is a count of secon ds when
K (600) or more VT Path BIP errors were detected. An AIS-V defect (or
a lower-layer, traffic-related, near-end defect) or an LOP-V defect can
also cause an SES-V.
UAS-V Unavailable Second VT Layer (UAS-V) is a count of the se cond s w hen
the VT path was unavailable. A VT path becomes unavailable when ten
consecutive seconds occur that qualify as SES-Vs and continues to be
unavailable until ten consecutive seconds occur that do not qual ify as
SES-Vs.