WLC 3504 not connecting to ISE RADIUS after 8.10 upgrade

[richard.greene1]

Client do not authenticate after upgrading the WLC 3504 for 8.5 to 8.10. I changed to config in the 8.10 from local to radius but they still do not even try to hit the ISE server. It works fine if I just move to 8.8.

[balaji.bandi]

I will start  below steps :

1. I will start with the Config. is there any change in WLC config when we move from 8.8 to 8.10

2. re-visit the release notes and look for any ISE compatibility issues :

https://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/crn810mr2.html

3. Login to WLC and debug the logs and see what is wrong.

4. Visit  ISE  debug logs and see any abnormal logs or is the request reaching ISE.