This paper studied the protection mechanism for virtual ring in mesh topology, and analyzed a construction algorithm for a virtual ring based on spanning tree.
文章对网状拓扑中的虚环保护机制进行了研究，并对一种基于生成树的虚环构成算法进行了分析。
Based on logical topology similar to wavelength graph, the algorithm constructs the multicast tree.
提出的算法基于一种类似于波长图的逻辑拓扑来构造组播树。
Secondly, the synchronization based on ringed topology is designed, which is totually different from the present meathod based on the tree, star or P2P model.
其次，基于现有的树型，星型或是P2P网状同步拓扑系统的研究基础，提出环状同步拓扑下的同步系统设计。
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