The algorithm applies on-demand procedures to dynamically refresh routes and build multicast forwarding group.
算法采用按需路由发现过程，动态更新路由信息和建立多播转发组。
Aiming at distributed router, we design the optimized distributed storage of multicast forwarding table, and two level forwarding project for multicast datagram.
针对分布式路由器，设计了组播转发表优化分布式存储及组播报文两级转发方案提高性能。
In traditional IP multicast, data for a given group is forwarded through a tree structure covering the members of this group. The on-tree routers must maintain a per-group forwarding state.
在传统组播中，组播组数据由一棵覆盖所有组成员的组播树进行转发，树上路由器必须保存每一个组播组的转发状态。
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