User's Guide

• Security - Security events are based on wireless network security SNMP traps received from
infrastructure devices. The alarms in this category indicate that a security-related event has occurred
as detected by an infrastructure device. Wireless controllers and APs that have been dedicated as
'detectors' periodically scan the wireless network for neighboring APs, possible rogue devices,
wireless intrusions and active wireless attacks.
• Statistics - Statistics events are based on wireless network and service statistic SNMP traps received
from infrastructure devices. Infrastructure devices measure network service performance (Hotspot
status) and statistical thresholds as set in a device configuration. Statistical events are triggered
when a specific statistical threshold has been exceeded. Examples of statistical thresholds include
packets per second, throughput, average retries, and packets dropped. Setting statistical thresholds
are useful for measuring network performance on a per infrastructure device basis.
Alarm Library
To view a list of Infrastructure Alarms for each alarm sub-type, go to Configuration > Operational
Management > Alarm Configuration, open Infrastructure, and then open the alarm sub-type to see all
the alarms associated with the sub-type.
LBS Alarms
Location Based Services (LBS) alarms alert you to visitors with Wireless Clients entering or leaving your
location. LBS Alarms are broken down into the following two types:
• PresenceA Wireless Client has been detected in the environment or has left the environment.
• Region PresenceA Wireless Client has met one of the following conditions:
• Entered a predefined virtual region.
• Exited a predefined virtual region.
• Has been detected in a predefined virtual region for a specified amount of time.
• Has been detected within a specified distance of a predefined virtual region.
Alarm Library
To view a list of LBS Alarms for each alarm sub-type, go to Configuration > Operational Management >
Alarm Configuration, select LBS, and then select the alarm sub-type to see all the alarms associated
with the sub-type.
Performance Alarms
Performance Alarms alert you to events that provide critical information about the service levels of the
wireless network. In a wireless environment, Performance events can be an indication of problems
related to configuration, compatibility, congestion, coverage, potential interference sources, and
utilization levels. Because 802.11 operates in a shared and unlicensed frequency spectrum, it is possible
that performance issues may be the result of non 802.11 devices such as microwaves and cordless
phones, or could be a result of a conflict with other 802.11 devices, including both valid devices as well
as neighboring devices transmitting into the monitored airspace.
Performance Alarms are broken down into the following eight sub-types:
• AP Testing - AP Testing Events track network failures and provide proactive notification that the
network resources may be unavailable. The alarms in this category indicate a failure of one of the
test conditions. Any alarm should be considered a high priority event as it may be preventing the
wireless applications from operating properly.
Configuration
Tab Alarm Configuration
Extreme AirDefense User Guide for version 10.5. 623