Hi all,
I've searched if this question has been asked already and couldn't find anything, hence excuse me if something similar exists and point me to the solution.
If not, please have a look and let me know what you think about this one.
We have a setup of 2 WLC units (9800-L) with 9130-AXI-E and AIR-AP1562I-E-K9 WAPs.
System is working fine, no issues really except for this random one we are facing. Sometimes our WAPs (happens on only 4 WAPs out of 120), will go from blue indication light to red/green and within half a minute back to blue light. During red light status, devices those were connected to the WAP will lose WiFi hence the connection and once blue light is back, everything works fine.
I thought WAP restarted for some reason, but checking the uptime I've noticed it didn't and it's been up for 290+ days.
Everything is showing healthy, functional, registered and I have no idea what is causing this issue.
I've checked WLC logs and found following:
Aug 15 18:51:41.321: %CAPWAPAC_SMGR_TRACE_MESSAGE-5-AP_JOIN_DISJOIN: Chassis 2 R0/0: wncd: AP Event: AP Name: ***, MAC: *** Disjoined
Aug 15 18:51:41.312: %CAPWAPAC_SMGR_TRACE_MESSAGE-3-EWLC_GEN_ERR: Chassis 1 R0/0: wncd: Error in Session-IP: *** Mac: 34ed.1b6a.9800 Maximum retries for sending CAPWAP message reached. Close CAPWAP DTLS session
Aug 15 18:51:41.312: %CAPWAPAC_SMGR_TRACE_MESSAGE-5-AP_JOIN_DISJOIN: Chassis 1 R0/0: wncd: AP Event: AP Name: ***, MAC: ac7a.5695.3602 Disjoined
Aug 15 18:53:41.564: %LINEPROTO-5-UPDOWN: Line protocol on Interface Capwap105, changed state to up
Aug 15 18:53:41.558: %CAPWAPAC_SMGR_TRACE_MESSAGE-5-AP_JOIN_DISJOIN: Chassis 1 R0/0: wncd: AP Event: AP Name: ***, MAC: *** Joined
So WAP disjoins and joins randomly, at least from my perspective.
Before I remove and reinstall those WAPs which I guess should help, I'd like to hear a possible reason for this to happen.
Any advice would be highly appreciated.
Thanks guys
Petar