ROUTE SETTING DEVICE AND ROUTE SETTING METHOD

A route setting device includes: a storage in which routing information is stored; and a processor configured to execute a procedure, the procedure including: selecting a network device among a plurality of network devices forming a network over which a signal including transmission source information and destination information is transmitted, the network device changing at least one of the transmission source information and the destination information included in the signal; categorizing the network device based on a type of the changed information; and generating the routing information according to a result of the categorizing, wherein the route setting device sets the generated routing information to the network device.