IPv4-IPv6组播过渡技术

IPv4-IPv6 Multicast Transition Technologies

要使IPv4主机与IPv6主机进行组播通信,必须做协议转换工作。采用多播转换网关(MTG)技术方案能较好地实现IPv4网和IPv6网之间的组播互通。方法是将MTG部署在IPv4和IPv6网络的边界,将IPv4网络和IPv6网络视为地位对等的两个异构网络。IPv6主机可以加入组播源位于IPv4网络的组播组,IPv4主机也可以加入组播源位于IPv6网络的组播组。在IPv4中,MTG作为IPv6的代理,参与IPv4的组播;同样,MTG在IPv6中则作为IPv4的代理。在MTG系统内部,两个代理之间进行协议转换。

Protocol translation is required for I Pv4/IPv6 multicast communication. The Multicast Transition Gateway （MTG） technology is a good solution to the realization of IPv4/IPv6 multicast interoperability. With this technology, the MTG is deployed at the edges of IPv4 and IPv6, and the IPv4 and IPv6 networks are considered as peer-to-peer heterogeneous networks. The IPv6 multicast source can be added to the IPv4r multicast group, and the IPv4 multicast source can also be added to the IPv6 multicast group. In the IPv4 network, MTG as an agent of IPv6 participate in IPv4 multicast, and vise versa. Within the MTG system, the two agents translate protocols.