Clients freezing up

michaelcoffey · ‎04-01-2009

Has anyone experienced a situation where clients freeze ? The systems in question simply freeze (not bluescreen)and will unfreeze if you remove the wireless adapter. I have listed a couple details about the symptoms below:

1. Occurs on more than one type of client adapter. Proxim a/b/g gold and Intel 2200bg

2. After freezing if you unseat the adapter it will release the operating system (WinXPSP2) and if you reseat it the wireless will re-associate.

3. We have multiple sites that are affected and different code levels on our controllers. (3.2.193.10 and 5.0)

4. The problem is very sporadic and only occurs a couple of times a day on varying clients.

I believe this to be a client issue but I need to prove it. Any help would be greatly appreciated.

Leo Laohoo · ‎04-01-2009

Get another WLAN NIC and check it out. I don't think this has anything to do with Cisco's product. More to do with firmware.

Scott Fella · ‎04-02-2009

Does this occur when the client roams to another ap or when they are just sitting there? Depending on the client device, try to upgrading to the latest driver release or comapre the driver versions of the devices that are affected the most with the devices that seem to not have any issues. Verify the settings on the client device too. On the WLC side, you can try to tweak some stuff like making sure that 1 and 2 mbps data rates are enabled, disable aironet IE, make sure dhcp required is not checked. Another thing you can try is to play around with the session timeouts on the wlan. Try to set it to the max which is something like 65535 or something like that and ses if any of these help.

-Scott
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