In an interdomain network path control, by making path information with a network
resource in a destination domain accessible in addition to path information with
transmission domain and interdomain network resources, path selection taking network
resources into consideration end to end is enabled and optimum path selection not
only in a transmission direction but also in a reception direction is also enabled.
Moreover, by making not only network resources but also processing load information
of a service node accessible, selection of an optimum server and optimum path selection
for the server are enabled using both the service node processing load information
and the network resources.