本文提出了一种采用预设计的方法生成可恢复ATM多播树的自愈机制,该机制考虑了多播树的任何单链路和单节点失效两种情况.多播树的所有链路都包含在不同的保护环中,点相邻的保护环通过不经过公共点的接通路径相连.节点检测到失效时,只需激活相应的保护环和接通路径即可.仿真结果验证了该机制的有效性和可靠性.

This paper proposed a new self-healing mechanism based on pre-designed survivable ATM (Code division multiple access) multicast tree,which considers any single link and node failure case.All the links on the multicast tree are included by different protection cycles.The node-neighboring protection cycles are connected by the connecting path which doesn't pass through the common nodes of the neighboring cycles in order to avoid loop.When detecting the failure,the associated protection cycles and connecting paths are active.The simulation results show the efficiency and reliability of the proposed mechanism.