OPTICAL PATH COMMUNICATION NETWORK, NODE, AND OPTICAL PATH SETUP METHOD

摘要

A source node, along with transmitting an optical path setup request, notifi es towards a destination node available resource information related to itself, pre-assigns the available resources which its own node has notified. Each of transit nodes, along with relaying towards the destination node the optical path setup request which h as been received from a previous hop node, notifies towards the destination node available resource information related to itself, and pre-assigns the available resources which each of their own nodes has notified. The destination node, along with reserving a resource which is to be used for setting up an optical path based upon an optical pat h setup request which has been received, transmits a resource reservation request towards th e source node. The transit nodes and the source node actually reserve an available resource which has been pre-assigned, based upon a resource reservation request from a next hop node.