Patent ID: 9124489
Filing Date: 2015-09-01
Classification: H04L,H04Q

Abstract:
1. A method in a network management node of dynamically adapting a size of an event correlation time window (CTW) in a network having a plurality of managed network nodes, the method comprising the steps of: collecting, during one or more collection rounds by the network management node, information regarding interval length between transmission of consecutive Operations, Administration, and Maintenance (OAM) packets sent from each managed network node to the network management node; and setting the size of the event CTW by the network management node using the interval length information; wherein the event CTW specifies a time period during which the information collected by the network management node is stored in the network management node; wherein the size of the event CTW is set to be larger than a largest value of the interval length information collected during the one or more collection rounds, thereby ensuring events that would be of use during a root cause analysis are not excluded; and wherein the size of the event CTW is set smaller than a level at which the event CTW would impose unnecessary memory or processing power requirements on the network management node.