Alarm correlation method and system
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United States of America Patent
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Mar 16, 2004
Grant Date -
N/A
app pub date -
Apr 26, 1999
filing date -
Apr 26, 1999
priority date (Note) -
Expired
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Abstract
An alarm correlation method for use in a network management device is provided in which alarm correlation is performed between identified root-cause alarms and alarms which have been raised on network elements satisfying particular relationships with the network element that raised the root-cause alarm. A hierarchical network model is provided consisting of a transport termination point for each connection at various layers terminated by each network element, and a connectivity model is maintained which identifies all connections in the network. An impact group of transport termination points for a given transport termination point defines where to look for alarms for correlation for a given root-cause alarm. Preferably, a link between the root-cause alarm and a transport termination point which has been examined is established which allows expeditious correlation of later received symptomatic alarms with the root-cause alarm.
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