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eglinsky2012,
Did you find any more information on what was needed to fix this issue? We are also experiencing the same issue randomly and cannot find a root cause for it. We are on WISM2 8.0.140 using 3500/3600 APs.
Thanks!
Yes, I have this issue, too and recently it has gotten a lot worse. The AP does not fail over to another wlc (which the backup is setup exactly the same). An AP will loose some of their mappings (like 2 or 3 out of 4), but not the AP group or AP mo...