Hello: The issue its a problem with the version of the WLC software, at least in my case. I have updgrade the WLC to version 8.3.12.1.0 and the guns are working well now.

I have this problem too.  I have a WLC with software 8.3.102.0 In my case the guns lost conectivity but don't lost association with WLC. This happens when the gun does roaming from an AP3802 to an AP2602. the ping goes down, but in the controller, th...