Patent ID: 7502926

Claim:
An 802.1X protocol-based multicasting control method, comprising the following steps: Step 1: performing 802.1X authentication for a subscriber and storing authenticated subscriber information; Step 2: intercepting a request message for joining in a multicasting group sent from the subscriber; Step 3: obtaining a port number, a MAC address and a multicasting IP address of the subscriber from the request message; Step 4: searching corresponding subscriber account information in the 802.1X authenticated subscriber information according to said port number and MAC address; Step 5: authenticating the subscriber's account number information and the multicasting IP address, and then adding the subscriber to the multicasting group if the authentication is passed successfully; otherwise rejecting the subscriber's request; wherein if said 802.1X authentication is based on port, when a subscriber attached to said port makes a request for joining in a multicasting group, the subscriber's MAC address is searched for first; if said MAC address is found, the subscriber's account number information is searched for according to said MAC address and said port number; if said 802.1X authentication is based on MAC, when a subscriber attached to said port makes a request for joining in a multicasting group, the subscriber's account number information is searched for directly according to the subscriber's MAC address and the port number; and wherein the subscriber joins in the multicasting group through IGMP protocol.