Lucent Technologies LambdaXtreme Alarm Messages And Trouble Clearing Manual page 131

Fault Management
Alarm throttling
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365-575-783R1.1
Issue 1, June 2002
The alarm resynchronization process does not clear the existing GUI
display and alarm notification/list displays during the
resynchronization process, but rather retains the existing alarms until
the resynchronization is completed. The system can distinguish
between:
•
standing alarms that already exist in the GUI and
alarm/notification list displays
•
new alarms
•
alarms that are cleared by the NE between resynchronizations.
This allows the system to incrementally update the GUI display and
alarm notification/list displays to accurately indicate the subnetwork
status to the user.
The Alarm Throttling feature enables you to limit the amount of
autonomous messages and Critical autonomous messages that should
be monitored for an NE.
Alarm throttling can be done on demand for an NE through the Alarm
Throttling option on the NE's pop-up menu or be set up to occur
automatically when the number of alarms exceed a specified
threshold. An alarm throttle level between zero and 3,600 per hour
can be specified in the Automatic Alarm Throttling window. The
recommended initial level is 100 messages per hour (and this is the
default). If an NE has been enabled for alarm throttling and the
number of alarms in the NE exceeds the set level, the NE is
automatically put on throttled, or partial, alarm monitoring.
The Alarm Throttling feature is useful during events, such as an initial
network turn-up (or maintenance activity), where large numbers of
messages are generated by an NE. Throttling alarm only allows alarms
of a Critical priority to be displayed on the GUI, sent upstream to an
OS, or retrieved via alarm queries. (Non-maintenance-related
messages are not affected by alarm throttling and continue to be
logged in the normal manner.)
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Fault Management with Navis
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