User Manual

E-16
Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Windows
OL-1394-06
Appendix E Configuring the Client Adapter through Windows XP
Associating to an Access Point Using Windows XP
Step 6 Click OK twice to save your settings. The configuration is complete.
If you chose to store the PIN in the computer’s registry, the EAP authentication process begins
automatically, and the client adapter should EAP authenticate and use the saved PIN to access the SIM
card.
Note If the stored PIN is wrong and therefore rejected by the SIM, the EAP-SIM supplicant
temporarily changes the prompt mode to the default setting (Ask for my PIN once after I turn
my computer on) in order to prevent the SIM from locking up. Unless changed manually, this
setting stays in effect until your computer is powered off. Change your stored PIN on the SIM
Authentication Properties screen.
If you chose to be prompted for the PIN after a power-up or reboot or at every authentication request, a
pop-up message appears above the Windows system tray informing you that you need to enter your
credentials to access the network. Click the message, enter your PIN, and click OK. The client adapter
should now EAP authenticate.
Step 7 To verify authentication, double-click My Computer, Control Panel, and Network Connections. The
status appears to the right of your Wireless Network Connection. Click View and Refresh to obtain the
current status. If the client adapter is authenticated, the status reads Authentication succeeded.
Note ACU and the Windows Wireless Network Connection icon in the Windows XP system tray may
indicate a connection status when authentication is still in the pending state or the authentication
server fails to respond.
Associating to an Access Point Using Windows XP
Windows XP causes the client adapter’s driver to automatically attempt to associate to the first network
in the list of preferred networks (see Figure E-1). If the adapter fails to associate or loses association, it
automatically switches to the next network in the list of preferred networks.The adapter does not switch
networks as long as it remains associated to the access point. To force the client adapter to associate to
a different access point, you must select a different network from the list of available networks (and click
Configure and OK).