Two 1522 APs are randomly disappearing from the 4402 WLC (220.127.116.11) AP list. 802.11a is used by this Mesh APs to connect to Root AP.
"debug capwap events enable" command shows the following message:
*May 21 19:50:46.681: 00:24:f7:ad:c6:00 Discovery Request from 10.5.5.12:31840
*May 21 19:50:46.681: 00:24:f7:ad:c6:00 Discovery Response sent to 10.5.5.12:318
This message appears periodically and nothing happens, i.e. 10.5.5.12 does not register.
Also there is a "RRM Verify Coverage Hole returned L7_FAILURE" error.
Why AP is not registering, how can I troubleshoot?