Currently using intel 5100 & 6200 client cards on multiple driver versions. WiSM is 7.0.116. APs are 1250 and 1260 series. Citrix is setup to send server-side keepalives for session reliability. Randomly, several times a day the client will get disconnected from the Citrix application session but maintain connectivity to the AP and other applications continue to work. Traces show the server-side keepalive reach the controller but are delayed from controller to client by 5-6 seconds. Just enough time for the Citrix server to timeout and tear down to session. Additional testing shows the delay most likely occurs somewhere from controller to AP. It occurs on multiple controllers on multiple campuses.
We have Dell/Broadcom clients that don't experience the problem. The only commonality seems to be the Intel cards. Any ideas? CCX? I know Intel has a special relationship with Cisco regarding CCX and have developed features not available on other cards. Tried disabling power save and other CCX features but hasn't solved the issue. Any ideas are appreciated on this very strange problem.
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