I have reverted the WAPs from 9800 to 8540 and kept few waps on 9800 for testing purpose..I have many cisco 8821s which are having issues, this is the latest and look in FT roaming , client got stuck in IP learn state while ISE show authentication pa...

Yes but thats the generic message ..did not touched device config while roaming across wlc.and its EAP-FAST(dot.1x)

 I can see Cisco 8821 disconnects from wifi when roam from 8540s to 9800 zone and got stuck in ip learn state(may be bcz of mobility failure message) as per above debug while roaming from 9800s to 8540s seems seamless..will appreciate your inputs(WLC...

Does 5508 (8.5.171.0) work with ise3.2, if yes-could you please share the link , I am not able to find in wireless compatibility matrix also?