Controller, a communication system, a communication method, and a storage medium for storing a communication program

摘要

[Technical Problem];Placing optical performance monitors at all of nodes and links in a network results in a high monitoring capital expenditure (CAPEX).;[Solution to Problem];A controller connected to a network and a plurality of nodes includes: a first degraded path detecting means for detecting a wavelength path as a first degraded path, whose quality is detected to be degraded, based on received parameter of wavelength paths in the network; a correlation path computation means for computing a correlation path which is correlated to the first degraded path; a second degraded path detecting means for detecting a second degraded path from the correlation path; and a failure localization means for localizing a node or a link connecting nodes as a failure node or a failure link, wherein the node or the link are traversed by both of the first degraded path and the second degraded path.

主权项

1. A controller connected to a network and a plurality of nodes comprising:
a first degraded path detecting unit that detects a wavelength path as a first degraded path, whose quality is detected to be degraded, based on received parameter of wavelength paths in the network; a correlation path computation unit that computes a correlation path which is correlated to the first degraded path; a second degraded path detecting unit that detects a second degraded path, which is different from the first degraded path, from the correlation path; and a failure localization unit that localizes a node or a link connecting nodes as a failure node or a failure link, wherein the node or the link are traversed by both of the first degraded path and the second degraded path.