本文作者分析讨论了组播路由协议的生成树构建方法，在此基础上进一步对IP组播技术中核心的组播路由协议和算法进行了分析。

This paper intends to discuss the way to construct the spanning tree, on which the algorithm for routing protocol, which is the kernel of the IP multicasting, shall be analyzed.

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在分析原有基于MAC地址转发表算法的基础上，提出一种新的基于生成树协议的拓扑发现算法。

Based on the analysis of the existing algorithm of MAC address forwarding table, it presents a kind of new physical topology discovery algorithm depended on spanning tree protocol.

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在适合数据融合的生成树算法的基础上，分析能够有效延长网络生命的最小代价生成树路由协议的原理和特点。

Consider the too much redundant data and the non-balanced energy consumption of the routing protocol based on the minimum cost, proposed a new algorithm——MHEP routing algorithm.

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