User's Guide

Table Of Contents
Duration of Alarm
The alarm stays active for a period of time after the security event ends. This period of time is called the
duration. The duration is user-configurable, although AirDefense has determined default duration times
correlated to the expected life-cycle of each specific event. When the duration time ends, the alarm
becomes inactive. You can use the forensic analysis to view historical alarms.
Capabilities with a Central Management License
A Central Management license allows you to display alarms generated on any managed appliance in the
Alarms tab. In the example below, the grouping selected is Scope, and the level is County1. The alarm
count shows as 545 alarms; 254 alarms on network devices; and 291 alarms on unknown devices. The
total alarms is displayed in the upper right corner and shows 690 alarms.
Duration of Alarm
Alarms
480 Extreme AirDefense User Guide for version 10.5.