Pwerconnect 5448, Windows Server 2008 R2

Hello from France,

One of my project for a customer is to create a secure authentification via 802.1X. I chose to use freeradius.

But the customer didn't want to integrate a linux solution.

So I switched to Microsoft Windows server 2008 R2 and the NPS. I set up two solutions

First, a NAP. The solution works without any problems.

But the second, configuring dell powerconnect  device to a authenticate via active active directory has not working. I found and tried many howtos on the web, but no one are compliant with my device.

someone have to deploy this solution with the NAP  of Microsoft? Is there a POC from dell, which allow to solve it ? 

Thank for your helps

Théo