Patent ID: 7193969

Claim:
A router with a precedence control function comprising: means for collecting empty band related information related to an empty band of each route existing between an own router and a destination of a communications IP packet, and for storing route determining information including the collected empty band related information, a route from which said empty band related information is collected, and precedence of said communications IP packet in a route storing portion, in the event of receiving the communications IP packet from a terminal directly connected to the own router; and a route specifying portion for finding all of the route determining information having precedence equal to said communications IP packet and matching a route of the routes available for said communications IP packet and selecting a route having no overlapping with a route used by another packet with precedence higher than said communications IP packet and said route having the largest empty band among routes in the found route determining information as the route of said communications IP packet, in the event of receiving the communications IP packet from a terminal directly connected to the own router.