WESM zl Management and Configuration Guide WT.01.28 and greater

12-99
Wireless Network Management
Network Self Healing
1. Every time a wireless station’s packet fails to reach its destination, presumably
because of a collision, the station resends the packet. For each RP radio, the
module tracks the average number of times in the last 30 seconds that stations
reattempted to send a packet.
2. If a radio’s average retries exceeds a specified threshold, the module assumes
that the excessive collisions are caused by another device operating on the same
channel. (This could be an RP in another WLAN, a rogue RP, or even wireless
headsets.)
3. The module has the RP radio use ACS to select a new channel based on the best
SNR.
To enable interference avoidance, complete these steps:
1. Select Special Features > Self Healing > Configuration.
Figure 12-71.Enabling Interference Avoidance
2. Select the Enable Interference Avoidance box.
3. Typically, you should leave the settings for this feature at their defaults. However,
you can customize them: