METHOD, SYSTEM AND NETWORK NODE FOR DS-LITE NETWORK ARCHITECTURE TO BEAR MULTICAST SERVICE

摘要

Disclosed is a method for a lightweight dual-stack-lite (DS-lite) network architecture to bear a multicast service, including: when a multicast address family transition router element (mAFTR) receives an IPv4 multicast message sent from a multicast source, translating the same as an IPv6 multicast message, and sending the same to an mB4; and when the mB4 receives the IPv6 multicast message, translating the same as the IPv4 multicast message, and sending the same to a downstream multicast receiver. Disclosed at the same time are a system and network node for a DS-lite network architecture to bear a multicast service. By way of the solution of the present invention, the IPv4 multicast message can be completely converted into an IPv6 multicast message for transmitting in the IPv6 network, improving the transmission efficiency of the IPv4 multicast message in the IPv6 network, and utilizing the multicast capability of the IPv6 network to the greatest extent.