Patent ID: 7620732
Filing Date: 2009-11-17
Classification: H04L

Abstract:
1. An apparatus for setting a communication path between a communication terminal device, connected through a first network, and a first destination of one of a plurality of second networks, the apparatus comprising: a name resolution request generator that generates a first name resolution request addressed to each of a plurality of name resolution servers located in the second networks based on a second name resolution request for name resolution of the first destination received from the communication terminal device, and transmits the first name resolution request to each of the plurality of name resolution servers; a destination determiner that assigns a priority to a first name resolution response received from each of the plurality of name resolution servers in response to the first name resolution request transmitted by the name resolution request generator, and determines a second destination based on the priority; and a path setting unit that sets a path by generating a routing table from path information including address information of the second destination determined by the destination determiner, address information of a gateway located in the second network having the first destination, and an interface name of the apparatus, wherein the destination determiner assigns the priority of the first name resolution response received from each of the plurality of name resolution servers based on a length of a portion, from top level domain, shared between a domain name of the first name resolution response received from each of the plurality of name resolution servers and a domain name of a connection from the path setting unit to each of the plurality of second networks, and determines the second destination based on the priority.