Patent ID: 8493879

Claim:
A node apparatus wherein when a topology change occurs on a network used for packet transfer between node apparatuses, said node apparatus performs dynamic route control for establishing a new normal route, and said node apparatus comprises: a message receiving device that receives, from another node apparatus, a route control message which includes information required for route determination; a route computing device that determines a route on the network based on the received route control message; a message sending device that sends another node apparatus a route control message which includes information required for said another node apparatus to determine a route on the network; a delay computing device wherein when receiving the route control message by the message receiving device, the delay computing device computes an operation start time for route control operation executed by the route computing device and the message sending device, based on a distance between a topology change part and said node apparatus of oneself; and an execution control device that controls the execution of the route control operation by the route computing device and the message sending device, based on the operation start time computed by the delay computing device.