專利名稱：Failure recovery method and node, and

network

發(fā)明人：Ozaki, Hirokazu申請?zhí)枺篍P07104352.5申請日：20070316公開號：EP1838036A3公開日：20120704

專利附圖：

摘要：Paths are changed quickly without burdening a network when link failure occurs,allowing packets to avoid the location of the failure. A node in a network ascertains treeinformation of the network by acquiring the tree information from another node or

computing the tree information, extracts in advance a node set as a range affected by linkfailure, based on the ascertained tree information, the node set including incoming andoutgoing links of the node as part of the tree, notifies, when link failure is detected, onlythe affected area that link failure has been detected, and recalculates a path when linkfailure is detected by the node or when the notification is received from another node.The path recomputation is performed assuming that failure occurred simultaneously onan outgoing link paired with an incoming link whose failure has been detected. Thenotification is performed by specifying a path in advance.

申請人：NEC Corporation

地址：7-1, Shiba 5-chome Minato-ku Tokyo 108-8001 JP

國籍：JP

代理機(jī)構(gòu)：Betten & Resch

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