cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
2515
Views
0
Helpful
3
Replies

APs dropping from the WLC

danielnigrinis
Frequent Visitor
Frequent Visitor

Hello everyone,


I been working on an issue I have on the wireless Network, the APs are dropping from the WLC and im trying to get some ideas from the logs. I changed the APs from Local to FlexConnect but the result was the same, after certain time the APs start to diassociate from the WLC but I cant find the reason why.


When I check the logs on the WLC I see these:


APF-3-REG_STATE_CHANGE_FAILED:  AP SlotId Updation with WLAN data failed for AP: XXX
APF-3-GET_MULTI_ENC_POL_FAILED: Could not Get Multicast Encryption Policy. Unsupported multicast cipher for WPA2.WPA2:0.


When you check the Traps on the WLC you see following output:


4 disassociated previously due to Link Failure. Reason: Capwap Discovery Request.


I Though the problem was a connectivity issue on the switch network but I confirmed that the switches can ping the APs when they disassociate from the WLC. So it seems not to be a connectivity issue. 


Do you have any other ideas?


Thank you for your help, have a good day

3 Replies 3

Mark Elsen
Hall of Fame
Hall of Fame

 

 - Connect to the AP when that happens and issue show logging 

 M.



-- Let everything happen to you  
       Beauty and terror
      Just keep going    
       No feeling is final
Reiner Maria Rilke (1899)

patoberli
VIP Alumni
VIP Alumni

Which firmware are you running? This might be some bug. 

What model of controller?
What model of AP?

What version of software?

What devices are in the network path between AP and WLC?

------------------------------
Please click Helpful if this post helped you and Accept as Solution (drop down menu at top right of this reply) if this answered your query.
------------------------------
TAC recommended codes for AireOS WLC's   and   TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's,   Best Practices for 9800 WLC's   and   Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
Field Notice: FN63942 APs and WLCs Fail to Create CAPWAP Connections Due to Certificate Expiration
Field Notice: FN72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Required
Field Notice: FN72524 IOS APs stuck in downloading state after 4 Dec 2022 due to Certificate Expired
- Fixed in 8.10.196.0, latest 9800 releases, 8.5.182.12 (8.5.182.13 for 3504) and 8.5.182.109 (IRCM, 8.5.182.111 for 3504)
Field Notice: FN70479 AP Fails to Join or Joins with 1 Radio due to Country Mismatch, RMA needed
Field Notice: FN74383 APs Running 17.12.4/5/6/6a May Run Out of Flash Space Preventing Upgrades
How to avoid boot loop due to corrupted image on Wave 2 and Catalyst 11ax Access Points (CSCvx32806)
Field Notice: FN74035 - Wave2 APs DFS May Not Detect Radar After Channel Availability Check Time
Leo's list of bugs affecting 2800/3800/4800/1560 APs
Default AP console baud rate from 17.12.x is 115200 - introduced by CSCwe88390
Review Cisco Networking for a $25 gift card