Intel 3945 roaming issues

[allan.larson]

I have some 1242 AP's set up with Cisco Fast roaming. My 3945 clients roam fine, but after a few seconds, they lose their IP address. If I have a constant ping going, my ping will drop for about 3 seconds, then replys will go for about 4 seconds. It will continue to do this about three times until stabilizing and then it works great until roaming again. Anyone have any ideas? TAC blames Intel. Intel says to work with Dell. Dell has no clue. Any help would be appreciated.

[johnruffing]

I have heard that there are updated drivers from Intel that, since this summer, have significantly improved Intel-related issues.

[allan.larson]

I have updated all Intel drivers.

[frankzehrer]

Hi Allan,

Have you tried tweaking Roaming Aggressiveness in the Intel PROSet client utility? You may also want to try turning off Auto-RF just to see if it makes any difference.

I had costumers which had problems with the ProSet Utility. We deinstlled ad used the Windows XP Wireless Zero configuration.

The Intel Wireless NIC have actual some issues with the Cisco environment.

Some examples from the forum:

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Wireless%20-%20Mobility&topic=General&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.1dd73e2f

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Wireless%20-%20Mobility&topic=Security%20and%20Network%20Management&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.ee95e05

Please check if the wireless clients you use are specified in the "Cisco Compatible Client Devices" list:

http://www.cisco.com/web/partners/pr46/pr147/partners_pgm_partners_0900aecd800a7907.html

The mentioned versions can be found here:

http://www.cisco.com/warp/public/765/ccx/versions_and_features.shtml

Best regards,

Frank

[rduke]

Allan,

Just curios, did you check the log on the APs to verify that a fast roam did occur when it drops? I had it working just fine with my Intel 2915 cards, but have not tested it with the newer ones. I ended up turning it off because the application I wanted to use it with had nics which no not support it.

R Duke