Patent ID: 7843896

Claim:
An information processing method, comprising: managing, with a management server, paths in a specific network; receiving, at said management server, a registration request including data concerning a source address and a source channel from a multicast source server; allocating, at said management server, a multicast address corresponding to said source channel to discriminate passing multicast data; storing said multicast address into a multicast data storage in association with said source channel; reading out, with said management server, from a path data storage that stores data concerning labels of links constituting paths in said specific network, data concerning labels of links constituting a multicast path from said source address included in said registration request to an edge router connected to a computer which is operable to receive multicast data; generating, at said management server, a data structure capable of registering said multicast address in association with each said label; changing, with said management server, said data structure into a form in which a portion having a common label is aggregated with respect to a plurality of multicast paths from said source address included in said registration request; and carrying out, at said management server, a setting for a router on said multicast path by using said data structure stored in said multicast data storage so as to allow said router to carry out routing by a set of said label and said multicast address.