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    Communications system and method providing optimal restoration of failed-paths
    1.
    发明授权
    Communications system and method providing optimal restoration of failed-paths 失效
    通信系统和方法提供故障路径的最佳恢复

    公开(公告)号：US5768256A

    公开(公告)日：1998-06-16

    申请号：US580718

    申请日：1995-12-29

    申请人： John David Allen ,  Lee D. Bengston

    发明人： John David Allen ,  Lee D. Bengston

    IPC分类号： H04L12/56 ,  H04Q3/00 ,  H04J3/12

    CPC分类号： H04Q3/0079 ,  H04L45/28 ,  H04L45/32

    摘要： A system and method for restoring communications between a pair of nodes, between which communications have been broken, in a network. The method comprises the steps of designating one of the nodes a SENDER node and the other a CHOOSER node, where the SENDER and CHOOSER nodes each have a working port connected to a link bearing the interrupted communications; creating a forward restoration signature having a unique priority; selectively transmitting the forward restoration signal from the SENDER node based on its priority; upon receipt of a forward restoration signature at a TANDEM node, modifying and selectively transmitting the forward restoration signature based on its priority; upon receipt of a forward restoration signature at a spare port on the CHOOSER node, choosing the restoration path indicated by the received forward restoration signature, connecting the working port to the spare port, and transmitting a reverse restoration signature having the same priority as the forward restoration signature; upon receipt of a reverse restoration signature at a TANDEM node, based on the priority of the reverse restoration signature, modifying and selectively transmitting the reverse restoration signature, and connecting the port on which the reverse restoration signal was received to the port on which the corresponding forward restoration signature was originally received; and on receipt of a reverse restoration signature at a spare port on the SENDER node, connecting the spare port to the working port, thereby restoring communications between the pair of nodes.

    摘要翻译： 一种在网络中恢复通信已经被破坏的一对节点之间的通信的系统和方法。 该方法包括以下步骤：将SENDER节点和另一个节点中的一个节点指定为CHOOSER节点，其中SENDER和CHOOSER节点各自具有连接到承载中断的通信的链路的工作端口; 创建具有唯一优先级的前向恢复签名; 基于其优先级选择性地发送来自SENDER节点的前向恢复信号; 在TANDEM节点接收到转发恢复签名时，根据其优先级修改和选择性地发送前向恢复签名; 在CHOOSER节点上的备用端口接收到正向恢复签名时，选择接收到的正向恢复签名指示的恢复路径，将工作端口连接到备用端口，并发送与前向相同优先级的反向恢复签名 恢复签名; 在TANDEM节点接收到反向恢复签名时，基于反向恢复签名的优先级，修改并选择性地发送反向恢复签名，并将其上接收到反向恢复信号的端口连接到其上对应的端口 最初收到正向恢复签名; 并且在SENDER节点的备用端口上接收到反向恢复签名，将备用端口连接到工作端口，从而恢复该对节点之间的通信。