802.1X authentication initiation

Both the client and the authenticator can initiate 802.1X authentication.

• Client initiation—After the client is associated with the authenticator, it sends an EAPOL-Start packet to the authenticator to initiate 802.1X authentication.

• Authenticator initiation—After the client is associated with the authenticator, the authenticator sends an EAP-Request/Identity packet to initiate the authentication. The authenticator retransmits the packet if no response has been received within the client timeout timer.