Re: client roaming issue - WLC 5508

S-SAL · ‎03-06-2024

I'm trying to troubleshoot a roaming problem, where some of our client sometimes experience an interruption of connectivity. The problem occurs when the clients roams.

All APs are connected to the same local WLC 5508 running (SW Version 8.0.121.0).

I tried recording debug logs of roaming to check ("debug client xxxx.xxxx.xxxx") but unable to get any logs for now , I will try to get the logs and update here.

Is there any link where I can view all bugs related to (SW Version 8.0.121.0) ?

marce1000 · ‎03-06-2024

- Client debugging should always work according to https://www.cisco.com/c/en/us/support/docs/wireless/aironet-1200-series/100260-wlc-debug-client.html
Make sure a correct mac address is specified ; you can have client debugs analyzed with Wireless Debug Analyzer

>...Is there any link where I can view all bugs related to (SW Version 8.0.121.0) ?
'Instead' you should use the latest/last release for the 5508 being advertised in https://www.cisco.com/c/en/us/support/docs/wireless/wireless-lan-controller-software/200046-tac-recommended-aireos.html

==> https://software.cisco.com/download/specialrelease/2702eede2b47a5c3bb40795bbe836af6

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! '

Rich R · ‎03-06-2024

You can search for bugs at https://bst.cloudapps.cisco.com/bugsearch/ but like Marce says that software is so old there's really no point.

Before you upgrade also check the Compatibility Matrix (link below) to make sure all your APs are supported on the new code. The 5508 is already past the end of support date so really is time for you to start looking at updating the equipment:
https://www.cisco.com/c/en/us/products/collateral/wireless/5500-series-wireless-controllers/eos-eol-notice-c51-740221.html

Look at the 9800 series controllers https://www.cisco.com/site/uk/en/products/networking/wireless/wireless-lan-controllers/catalyst-9800-series/index.html with Catalyst 91xx APs.

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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
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- Fixed in 8.10.190.0, latest 9800 releases, 8.5.182.11 (8.5 mainline) and 8.5.182.108 (8.5 IRCM)
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

Rasika Nayanajith · ‎03-06-2024

As others suggested, go with the latest image you can run on 5508 (check the AP compatibility as well).If you have to stay in 8.0.x code train, then go with the latest on that train.(now finding those images will be difficult as cisco no longer publish those EoL/EoS codes)

HTH
Rasika
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