We have windows 2008 Active Directory and also it is our Radius server. We have XP as a client.
We use Cisco 4400 Series Controller and Cisco Aironet 1142 Wireless-N Access points .
The Laptops were connecting automatically into the wireless network once they are joined to the domain and adding the laptop to the wireless security group in the AD.
All of sudden all the 20 laptops got disconnected from our wireless network.
The Laptops can detect our wireless network. But on the system tray the pop says:
Windows was unable to log you on to the network WDomain. (WDomain is our SSID)
I dont know how my predecessors set up this and looks like authentication issue.
I saw the certificate on the server and the client and the certificates are self signed and are valid till 2030.
I logged into the wireless controller and under Monitor I get continious logs under - Most recent traps:
AAA Authentication Failure for UserName:host/LAPTOP1.domain.local User Type: WLAN USER
AAA Authentication Failure for UserName:host/LAPTOP2.domain.local User Type: WLAN USER
AAA Authentication Failure for UserName:host/LAPTOP3.domain.local User Type: WLAN USER
Is there a way to troubleshoot if the Cisco 4400 WLC controller is able to establish proper relationship with the Radius Server?
Is it the Wireless Lan Controller password and the password on the radius server are mismatching/ or if the certificate is corrupted ?
Please help how trouble shoot this. I don’t have much experience on the wireless network .Any help will be much appreciated.