APs lose connection and WLC 5500 series

Menezor · ‎11-29-2022

All the APs lose connection from WLC 5500 and I dont know why and the config is good???

marce1000 · ‎11-29-2022

- Check controller logs when that happens ,

M.

-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

Menezor · ‎12-01-2022

No saved log is found except the current log records

Leo Laohoo · ‎11-29-2022

Rich R · ‎12-01-2022

Seriously @Menezor your post is rather lacking in detail!

What models of APs?
What version of software?
Did something happen that triggered this? (eg WLC reloaded, APs lost connectivity to WLC etc)
What do the AP console logs show?
What do the WLC logs show?
What method are you using for your APs to discover the WLC? (same LAN, helper address, DNS, DHCP option 43)

And meanwhile take a look at the field notice for certificates below. If it's that then you need to follow ALL the steps in the field notice to resolve the issue permanently. I'll summarise as I have done many times before in this community which you would have found if you had searched:

1. Upgrade to the latest version which supports your APs and WLC - probably 8.5.182.0
https://www.cisco.com/c/en/us/support/docs/wireless/wireless-lan-controller-software/200046-tac-recommended-aireos.html#anc10
2. Apply the config workaround on the WLC
3. Disable WLC NTP and set time manually to before your certs expired
4. Allow all the APs to join, download new code, pick up the config workaround
5 Re-enable NTP
Note that it could be AP and/or WLC certs which have expired.

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Please click Helpful if this post helped you and Select as Solution (drop down menu at top right of this reply) if this answered your query.
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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
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

Menezor · ‎12-05-2022

Hello Rich.

What models of APs? the APs are AP1130AG model

What version of software? The WLC 5508 software model is 7.0.220.0 Release

Did something happen that triggered this? Power fluctuations and ISP downtime for some weeks were the recent happenings

What do the WLC logs show? Just the current logs are showing no old logs

marce1000 · ‎12-06-2022

- FYI : https://www.cisco.com/c/en/us/support/docs/field-notices/639/fn63942.html

M.

-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '