Monitoring Your Network - Monitoring Alarms - Viewing an Alarm Instance's History -
Interpreting Alarm-Instance Information Using the NerveCenter Web Client

Viewing an Alarm Instance's History

Using the alarm-instance viewers provided by the NerveCenter Web Client and the NerveCenter Client, you can view all the current alarm instances for the servers to which you're connected. Sometimes, however, you also need historical information about an alarm instance. For example, let's say that a current alarm instance tells you that an interface on a router has been experiencing high traffic for the last ten minutes. You might also want to see whether this is a new problem or whether it has happened before. To get this information, you can ask to see the alarm instance's history. This history includes information about the alarm instance's twenty most recent transitions.

When an alarm instance returns to Ground state, it is deleted and no history for the instance is retained. To track a particular condition on a device or an interface across alarm instances, a behavior model must record data about alarm transitions in a log file or the Windows Event Log. For information on reading logs, see the section Reading Logged Data. For information on creating logs, see the manual Designing and Managing Behavior Models.

The procedure you use to view historical information depends on whether you're using the Web client or the Client to monitor your network. See one of the following subsections:

Interpreting Alarm-Instance Information	Using the NerveCenter Web Client
	29 July 2003