Patent ID: 7995491

Claim:
A method of managing network impairments comprising: collecting a plurality of network events associated with at least two provider-edge routers, the network events indicating at least a partial data loss; determining a characteristic of the network events associated with each of the at least two provider-edge routers, the characteristic comprises a quantity of network events associated with each of the at least two provider-edge routers; comparing the characteristic to a first threshold value; generating an alarm based on the comparison of the characteristic to the first threshold value, wherein generating the alarm comprises generating a node-based provider-edge alarm in response to the quantity of network events being greater than one; comparing a total number of events associated with each of a plurality of node-based provider-edge alarms to a second threshold value; and generating a single provider-node alarm from the plurality of node-based provider-edge alarms based on the comparison of the total number of events associated with each of the provider-edge alarms to the second threshold value.