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1. 发明申请

US20110058488A1 REAL-TIME DETECTION OF FAILED INTER-NODE LINK IN NETWORK 失效
标题翻译：实时检测网络中的故障间断链路
公开(公告)号：US20110058488A1
公开(公告)日：2011-03-10
申请号：US12876630
申请日：2010-09-07
申请人： Masafumi WATARI , Atsuo Tachibana , Shigehiro Ano
发明人： Masafumi WATARI , Atsuo Tachibana , Shigehiro Ano
IPC分类号： H04L12/26
CPC分类号： H04L12/56
摘要： A method is disclosed of detecting a failed link in a network over which nodes are interconnected via links. The nodes include an observer node and a managed node. This method, implemented for the observer node, includes: determining, for each of prefixes in receive route-update messages, a single normal-state path; determining, for each of the links (i.e., monitored links) on the normal-state path for the managed node, at least one prefix advertised from one of the nodes which is located adjacent to the each link on an upstream side, as at least one monitored prefix; determining whether the path contained in each route-update message, and the normal-state path for the monitored prefix contained in the each route-update message are unmatched with each other; counting, for each monitored link, an unmatched-prefix count which refers to a count of at least one unmatched prefix of the at least one monitored prefix for each monitored link; and extracting at least one link from the monitored links, as at least one failed link, based on the unmatched-prefix count.
摘要翻译：公开了一种检测网络中的故障链路的方法，在该网络中节点通过链路相互连接。节点包括观察者节点和受管节点。为观察者节点实现的该方法包括：为接收路由更新消息中的每个前缀确定单个正常状态路径; 为被管理节点的正常状态路径中的每个链路（即被监控链路）确定至少一个从位于上游侧的每个链路相邻的节点之一发布的前缀至少一个一个监控的前缀; 确定每个路由更新消息中包含的路径和每个路由更新消息中包含的所监视的前缀的正常状态路径是否彼此不匹配; 对于每个被监视的链路对不匹配的前缀计数进行计数，所述不匹配的前缀计数涉及针对每个被监视的链路的所述至少一个所监视的前缀的至少一个不匹配的前缀的计数; 以及基于所述不匹配的前缀计数，将来自所监视的链路的至少一个链路提取为至少一个故障链路。

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