Patent ID: 7990946

Claim:
A node apparatus comprising: a computer programmed to determine a path for transferring data in a communication network by: receiving a reservation request message, requesting a reservation for setting up a path, from a node apparatus located on a start point side of said path; setting up said path requested by said reservation request message; measuring path setup time representing time required to set up said path; including said path setup time in a reservation completed message reporting completion of reservation of said path requested by said reservation request message; transmitting said reservation completed message to said node apparatus located on the start point side of said path, in response to said reservation request message; receiving said reservation completed message including path setup time measured at other node apparatus on said communication network; storing the path setup time measured at each of said other node apparatus on said communication network in a memory; and determining a path that can be set up with a shortest path setup time, based on the path setup time of each node apparatus stored in said memory.