TRANSMISSION NETWORK AND TRANSMISSION NETWORK MANAGEMENT SYSTEM

摘要

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.

主权项

1. 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 plane management table adapted to manage combination patterns of paths different from each other as transmission planes, and store a first transmission plane and a second transmission plane, and a setting control unit adapted to instruct, when the paths are set according to the first transmission plane, the plurality of transmission devices to set paths according to the second transmission plane in response to a predetermined condition.