0436201-A1 is referenced by 8 patents and cites 3 patents.

A method includes the steps of a) detecting a failure which occurs in a node or link (step 101), and b) identifying at most N nodes contained in each path affected by the occurrence of the failure (step 102,103). The method also includes the steps of c) broadcasting a restoration message having an identifier of the sender node and identifiers of the N nodes, the identifiers of the N nodes being candidate nodes (step 103), and d) determining whether or not a node is one of the candidate nodes (step 190). The node which is one of the candidate nodes is a destination node. Further, the method includes the steps of e) passing the restoration message through a repeater node (step 203) and f) determining a route via which the restoration message has been transferred to the destination node to be an alternate path (step 302).

Title
Method for searching for alternate path in communication network.
Application Number
EP19900125088 19901221
Publication Number
0436201 (A1)
Application Date
December 21, 1990
Publication Date
July 10, 1991
Inventor
Soejima Tetsuo
JP
Ogura Takao
JP
Miyazaki Keiji
JP
Komine Hiroaki
JP
Chujo Takafumi
JP
Assignee
Fujitsu
JP
IPC
H04Q 03/495
H04L 12/54
H04L 12/26
H04L 01/24
H04Q 03/64
H04Q 03/00
H04L 12/56
H04L 01/24
H04Q 03/66
H04Q 03/00
H04L 12/56
H04L 01/24
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