Method of implementing handshaking between 802.1X-based network access device and client

摘要

A method of implementing handshaking between a network access device and a client includes sending an authentication request message containing the client's address and an appointed multicasting address. The authentication request message is sent from the client to the network access device to authenticate the client. After a successful authentication, the network access device sends handshaking messages at a preset handshaking time interval. When the client receives the handshaking messages, the client sends handshaking response messages to the network access device, also at the preset handshaking time interval. The handshaking messages are an EAP-Request/Identity messages defined in 802.1X, and the handshaking response messages are EAP-Response messages defined in 802.1X. If the network access device or the client does not receive messages from its counterpart for specified times within the handshaking time interval, they perform processing to take the client off line and sending a prompt for reconnection, respectively.