Work at ordinary times no contact with IP multicast technology, do not understand this, check some information recently, after watching or not too clear, so want to consult communication this great god see,
About source specific multicast SSM applications in a wide area network, server support multicast routing, but the server to receive multicast data users on the link between one or several routing does not support multicast function, in this case, the client can receive the multicast data? This application scenario USES multicast communication is feasible?