- Reboot the AP.
- Track down the offending device that is using the particular frequency causing the interference.
- Use the EVENT LOG tab to monitor clients as they attempt to join the wireless network.
- Use a different VLAN for that particular AP.
Explanation: When an AP is an issue, one of the best places to start is the WLC GUI. A particular AP can be selected, and the performance summary shows an overall view of the resources being used, clients, and the status of a particular AP. On the CLEAN AIR tab, the duty cycle shows the percentage of time the offending device is transmitting. A duty cycle value of 100% means the offending device can affect the channel all the time. The technician should track down the offending device or select a different RF channel for the AP.