Good evening,
According to the documentation for the MSM76X series...
"Suspicious device The AP unexpectedly requested new authentication
certificates from the controller. Possible causes are as
follows:
- A previously synchronized AP was reset to factory defaults.
- An unauthorized AP may be using the same MAC address.
This is a possible security breach that should be
investigated before authorizing the AP again."
A few diagnostic steps here may help... Just a reminder that some of these steps will delete AP specific configuration... make sure you have a backup recorded.
1. Factory reset the device, this commonly triggers the suspicious device warning but it may help in this case
2. Remove and Rediscover the device
3. Delete the device entirely from the controller and power cycle the device
4. If all else fails... try power cycling the controller
Also be aware of any changes that may have taken place to the network between the controller and the access point in question.
Regards,
Ryan