Explanation/Reference:
Explanation:
During the logon session, the RADIUS server encrypts and sends the WEP key, called a session key, over the wired LAN to the access point. The access point encrypts its broadcast key with the session key and sends the encrypted broadcast key to the client, which uses the session key to decrypt it. The client and access point activate WEP and use the session and broadcast WEP keys for all communications during the remainder of the session.
Reference: http://www.cisco.com/c/en/us/td/docs/routers/access/1800/wireless/configuration/guide/awg/ s37radi.html