Maintenance Description
Issue 8.0 July 2002
9-81
Performance Monitoring 9
SONET Performance Parameters 9
The FT-2000 OC-48 Lightwave System provides performance monitoring to
support proactive maintenance of a network. Proactive maintenance refers to the
process of detecting degrading conditions not severe enough to initiate protection
switching or alarming, but indicative of an impending hard or soft failure.
Proactive maintenance consists of monitoring performance parameters
associated with the SONET sections, lines, and paths within the SONET network
(Figure 9-28). (Refer to Appendix A, "A SONET Overview," for definitions of
SONET sections, lines, and paths.) Table 9-13 lists the SONET performance
parameters monitored.
These parameters are thresholded to show degraded performance. When a
performance-monitoring threshold is crossed, it is reported to the operations
system where all threshold crossings associated with a particular path can be
correlated, and the likely source of the degradation can be identified.
For more information about provisioning thresholds and enabling/disabling the
reporting of threshold crossing alerts (TCAs) to an operations system, refer to
Volume I, Section 8, "Administration and Provisioning."
Figure 9-28. SONET Section, Line, and Path
Lightwave Repeaters
DS1s
Equipment
Terminating
Lightwave
Multiplexer
Digital
DS3
DS1s
Path
Line
Sections
Equipment
Terminating
Lightwave
Multiplexer
Digital
DS3
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