Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Toshio Soumiya0
Shinya Kano0
Date of Patent
July 21, 2009
0Patent Application Number
108406940
Date Filed
May 6, 2004
0Patent Primary Examiner
Patent abstract
A method of detecting a failure in a network, which includes a transport plane comprised of a plurality of communication nodes performing optical cross-connect and a control plane comprised of a plurality of control nodes that are connected to and control the respective communication nodes, includes the steps of transmitting, from a control node connected to a communication node having detected a failure to an adjacent control node, a failure information message having a time indication indicative of a time at which the failure is detected, and identifying, at a given control node which received the failure information message, a location of the failure in response to the time indication.
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