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Fault Hierarchy

 

When multiple faults are active against an entity, one or more faults might be suppressed from reporting according to the masking relationships that exist for the object’s fault points. Masking of fault points is important in assisting with fault isolation when a single root cause might lead to multiple fault points being raised.

Masking relationships might also exist between fault points raised against different monitored objects. For example, if a Loss of Frame (LOF) fault is active against a single channel on an interface port, it masks the LOF fault against the interface entity, and so the reporting of the interface LOF condition is suppressed.