Xp validating identity wireless network
If the wireless adapter has an Automatic Private IP Addressing (APIPA) address (169.254.0.0/16) or the configured alternate IP address, then authentication has failed and the Windows-based wireless client is still associated with the wireless AP.
Additionally, when you obtain status on the connection, you can view the signal strength on the General tab and the IP address configuration on the Support tab.
For Windows XP with SP1, Windows XP with SP2, Windows Server 2003, or Windows 2000 with SP4, you can specify the names of the servers that must authenticate the wireless client in Connect to these servers, from the properties of the Smart Card or other Certificate EAP type, available from the Authentication tab for the properties of a wireless network.
The names of the servers must match the names of the authenticating servers or authentication will fail.
If a DHCP server is not found, it automatically configures an APIPA or alternate address.
For Windows 2000 Service Pack 4 (SP4) or later or Windows 2000 Service Pack 3 (SP3) with Microsoft 802.1X Authentication Client, use the Ipconfig tool to display the adapter status and IP address configuration for the wireless network adapter.