Patent ID: 7490145
Filing Date: 2009-02-10
Classification: H04L

Abstract:
1. A computer-implemented method of monitoring an element in a computer network, said method comprising: monitoring a preselected variable relating to said element; defining a threshold for the monitored preselected variable, wherein defining the threshold for the monitored preselected variable comprises: establishing a sliding window in time that is shorter than the common era length; determining if the preselected variable is currently breaching the threshold during a threshold era included in the first set of threshold eras, wherein determining if the preselected variable is currently breaching the threshold during a threshold era included in the first set of threshold eras comprises: repeatedly generating a time above threshold value, said time above threshold value being a measure of an amount of time during which the preselected variable exceeded the threshold during the sliding window of time; detecting when the time above threshold value exceeds a predefined condition window value; and in response to detecting when the time above threshold value exceeds said condition window value, generating an alarm.