AP541N - WPA Enterprise - Failed to connect

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Aug 4th, 2010
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I am trying to configure an AP541N with WPA Enterprise. My RADIUS server is an MS ISA 2003 and is already working fine with other devices (I have a ASA5510 also configured to use RADIUS authentication with this server). When I try to connect, I am getting the following error message on the event log of the AP541N:

Aug  4 18:37:36infohostapdwlan0: IEEE 802.11 STA 00:19:d2:9e:7a:81 deauthed from BSSID 00:21:29:01:60:e0 reason 1
Aug  4 18:37:36infohostapdwlan0: STA 00:19:d2:9e:7a:81 IEEE 802.1X: Supplicant used different EAP type: 1 (Identity)
Aug  4 18:37:36warnhostapdwlan0: STA 00:19:d2:9e:7a:81 IEEE 802.1X:  authentication failed - identity 'MYDOMAIN\myuser' EAP type: 0  (Unknown)
Aug  4 18:37:36infohostapdThe wireless client with MAC address 00:19:d2:9e:7a:81 had an authentication failure.
Aug  4 18:37:36warnhostapdwlan0: STA 00:19:d2:9e:7a:81 IEEE 802.1X: could not extract EAP-Message from RADIUS message

However, I do not see any error message on the ISA side. It actually tells me that the authentication happens fine. Any suggestion how I could troubleshoot this problem?

Thank you in advance for your help and have a great day,


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