Patent ID: 9590725
Date: 2017-03-07
CPC Classifications: G06F,H04B,H04J,H04L,H04Q

Claim:
1. A multi-failure resolution optical node comprising: an operating system wavelength path; two or more ranked standby system wavelength paths that are assigned to the operating system wavelength path; and a node control unit configured to separately operate the operating system wavelength path and the standby system wavelength paths in a normal power consumption mode or a reduced power consumption mode, wherein the node control unit operates the operating system wavelength path and a standby system wavelength path having first order in the normal power consumption mode, and operates a standby system wavelength path having second order or less in the reduced power consumption mode, and the node control unit checks presence or absence of a failure in the operating system wavelength path, checks presence or absence of a failure in the standby system wavelength path having first order when the node control unit determines the presence of the failure in the operating system wavelength path, switches the standby system wavelength path having the first order to the operating system wavelength path when the node control unit determines the absence of the failure in the standby system wavelength path having the first order, checks presence or absence of a failure in the standby system wavelength path having the second order or less by switching the reduced power consumption mode to the normal power consumption mode in order from a top of the ranking when the node control unit determines the presence of failure in the standby system wavelength path having the first order, and switches the standby system wavelength path having the second order or less the absence of the failure of which is determined first, to the operating system wavelength path.