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CHAPTER
12-1
Cisco ONS 15600 Reference Manual, R7.2
12
Performance Monitoring
Note
The terms "Unidirectional Path Switched Ring" and "UPSR" may appear in Cisco literature. These terms
do not refer to using Cisco ONS 15xxx products in a unidirectional path switched ring configuration.
Rather, these terms, as well as "Path Protected Mesh Network" and "PPMN," refer generally to Cisco's
path protection feature, which may be used in any topological network configuration. Cisco does not
recommend using its path protection feature in any particular topological network configuration.
Use performance monitoring (PM) parameters to gather, store, threshold, and report performance data
for early detection of problems. This chapter defines PM parameters and concepts for Cisco ONS 15600
optical cards.
Note
For additional information regarding PM parameters, refer to Telcordia documents GR-1230-CORE,
GR-820-CORE, GR-499-CORE, and GR-253-CORE and the ANSI T1.231 document entitled Digital
Hierarchy - Layer 1 In-Service Digital Transmission Performance Monitoring.
For information about enabling and viewing PM values, refer to the Cisco ONS 15600 Procedure Guide.
Chapter topics include:
•
12.1 Threshold Performance Monitoring, page 12-1
•
12.2 Intermediate-Path Performance Monitoring, page 12-2
•
12.3 Pointer Justification Count, page 12-4
•
12.4 Performance-Monitoring Parameter Definitions, page 12-5
•
12.5 Optical Card Performance Monitoring, page 12-9
•
12.6 ASAP Card Performance Monitoring, page 12-11
12.1 Threshold Performance Monitoring
Thresholds are used to set error levels for each PM. You can program PM threshold ranges from the
Provisioning > SONET Thresholds tabs on the Cisco Transport Controller (CTC) card view. To
provision card thresholds, such as line, path, and SONET thresholds, refer to the Cisco ONS 15600
Procedure Guide.
During the accumulation cycle, if the current value of a performance monitoring parameter reaches or
exceeds its corresponding threshold value, a threshold crossing alert (TCA) is generated by the node and
sent to CTC. TCAs provide early detection of performance degradation. When a threshold is crossed,