Patent ID: 7855956
Filing Date: 2010-12-21
Classification: H04L

Abstract:
1. A multicast source control method, comprising the steps of: a. creating multicast source authentication information in a master multicast source authentication server; b. the master multicast source authentication server dynamically updating said multicast source authentication information in accordance with a restriction on a multicast source; c. controlling sending a multicast message from the multicast source in accordance with said multicast source authentication information, wherein said multicast source authentication information is recorded in a tabular form; said multicast source authentication information table contains a corresponding relationship between a unicast address and a masked multicast address wherein said masked multicast address is a result of an AND operation on a multicast address contained in the table and an address mask; wherein said step b further comprises: a plurality of slave multicast source authentication servers, in accordance with the multicast source authentication information in the master multicast source authentication server, updating the multicast source authentication information stored therein at a predefined period; when the multicast source authentication information in said master multicast source authentication server is changed, notifying said slave multicast source authentication server to update the multicast source authentication information stored therein; and wherein said step c further comprises: c1. after receiving a multicast message sent from the multicast source, a predefined node initiating an authentication request to a preconfigured slave multicast source authentication server thereof; c2. said preconfigured slave multicast source authentication server performing a longest prefix matching with the multicast source address contained in the authentication request with the multicast address result in the multicast source authentication information table stored therein, and sending a response indicating whether the authentication request is successful to said predefined node according to the matching result, wherein: