Roaming with WPA-Enterprise/Radius

[DI PAOLA ., VIERI]

Hello,

I have freeRadius version 1.0.5 on gentoo Linux (r3).

I am using three Linksys WAP54G access points.

I've managed to roam seamlessly both with Broadcom and Intel wireless
laptops. However, this is true for open APs or with WEP encryption. If I use
WPA-Enterprise with a Radius server, there's a long delay when switching
between APs (10 seconds). 

The test environment is as follows: 

freeRadius.org Gentoo Linux server --- 3 Linksys WAP54G APs configured with
WPA-Enterprise w/Radius --- 1 roaming laptop 

The delay seems to be due to re-authentication with the freeRadius server
and that seems to be "expensive". 

Is there a way of "caching" or "pre-authenticating" or "propagating
authentication between APs"?

Has anyone found a solution to this roaming problem in case one uses
WPA-Enterprise/Radius? 

Regards,

Vieri

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