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1. 发明授权

US5003531A Survivable network using reverse protection ring 失效
标题翻译：生存网络采用反向保护环
公开(公告)号：US5003531A
公开(公告)日：1991-03-26
申请号：US392744
申请日：1989-08-11
申请人： Anthony P. Farinholt , John Lattyak , Blaine C. Readler , Joseph F. Svacek, III
发明人： Anthony P. Farinholt , John Lattyak , Blaine C. Readler , Joseph F. Svacek, III
IPC分类号： H04L1/22 , H04L12/437
CPC分类号： H04L1/22 , H04L12/437
摘要： In a data communications network comprising a series of nodes connected by optical fiber links providing direct bidirectional communication between adjacent nodes, and communication between non-adjacent nodes in both directions through the same set of intermediate nodes, failure of a single link or of a single node is overcome by protection switching to a standby transmisison loop, including a standby link connecting the head end and tail end nodes of the series. The network provides survivability while also taking advantage of the ability of add/drop multiplexers to allow reuse of bandwidth. Rapid switchover to the protection loop is achieved by providing each node with the capability of detecting and responding to adjacent faults and, in normal operation, maintaining a high-speed by-pass path for the protection loop through all of the nodes except the head end node.
摘要翻译：在包括通过提供相邻节点之间的直接双向通信的光纤链路连接的一系列节点的数据通信网络中，以及通过同一组中间节点在两个方向上的非相邻节点之间的通信，单个链路或单个链路的故障节点通过保护切换到备用传输环路来克服，包括连接该系列的头端和尾端节点的备用链路。该网络提供了生存能力，同时也利用了添加/删除多路复用器的能力，以允许重用带宽。通过为每个节点提供检测和响应相邻故障的能力，实现快速切换到保护环路，并且在正常操作中，通过除头端之外的所有节点保护用于保护环路的高速旁路路径节点。

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