Jointing with the program for the routing device and the authentication server device and the routing device being used for the multi cast communication system and this multi cast communication system, the program, and the multi cast communication mannered null contents

摘要

PROBLEM TO BE SOLVED: To manage a data receiving situation at a receiver side while operating multi-cast communication based on the protocol of a reception side base.;SOLUTION: Responding to that the reception request of multi-cast data is transmitted from client devices 5 and 6, the authentication processing of a client is executed between routing devices 7 and 8, and an authenticating server device 9 by using the MAC address of the client device being the origin of reception request, the ID of the routing device which has received the reception request, the ID of a port where the reception request is accepted by the routing device, and a designated multi-cast address. Then, only when the authentication is successful, multi-cast data are transmitted from the routing devices 7 and 8 to the client devices 5 and 6.;COPYRIGHT: (C)2003,JPO