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AssigneeFujitsu Limited
InventorsMasaki Takai, Tohru Andoh
Estimating the term…
A WDM communications line is used as a trunk to which an IP network or a SONET/SDH network is connected as a tributary. Additionally, an ID for identifying each wavelength or path, which is accommodated by a WDM communications line, is assigned to a frame of each wavelength. The ID for identifying a wavelength or a path, and the number held by a transmission device that configures the path are managed. When a fault occurs, the wavelength or the path on which the fault occurs is identified, and the identified wavelength or path is displayed on the screen of a supervisory control device that monitors the entire network. An administrator can recognize at first sight the path influenced by the fault other than the point at which the fault occurs, thereby efficiently maintaining and managing the network.
An optical path managing device in a wavelength multiplexing communications network which interconnects networks using a plurality of different protocols with optical signals having different wavelengths, comprising:
An optical path managing device which monitors and controls a wavelength multiplexing communications network which interconnects networks having a plurality of protocols, comprising:
An optical path managing method for use in a wavelength multiplexing communications network configured by a plurality of WDM transmission devices interconnecting networks which are configured by a plurality of transmission devices and use a plurality of different protocols, comprising:
Dependencies are inferred from the claim text.