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AssigneeHitachi, Ltd.
InventorsSHINYA FUJIOKA, Yoshihiro ASHI, Masahiko MIZUTANI, Hideki ENDO
Estimating the term…
A transmission network is comprised of a network management system for collectively managing and controlling a plurality of transmission devices coupled mutually through transmission routes and the transmission network as well. The network management system includes a plane management table adapted to manage transmission planes defined as a set of paths in the transmission network, and the plane management table has the function to set and manage a transmission plane (working plane) applied during normal operation and besides, a single or a plurality of transmission planes (protection planes) applicable in the event of occurrence of a fault in the transmission network. Then, when a fault occurs in the transmission network, the network management system changes the applied plane to a suitable transmission plane.
A network management system of a transmission network including a plurality of transmission devices and a plurality of paths each of which connects between arbitrary transmission devices, comprising:
A network management method of a transmission network including a plurality of transmission devices and a plurality of paths each of which connects between arbitrary transmission devices, comprising:
Dependencies are inferred from the claim text.