Communication apparatus, router apparatus, communication method and computer program product

摘要

A communication apparatus includes a Virtual Private Network protocol dependent processing unit that processes a protocol related to a Virtual Private Network and acquires an identification information message related to determination of Virtual Private Network identification information being network identification information for use in communication by the Virtual Private Network from a message received from a communication apparatus of the other party of connection connected to a network; an identification information processing unit that determines the Virtual Private Network identification information by sending and receiving the identification information message to and from the communication apparatus of the other party of connection; and an advertisement processing unit that performs processing related to distribution of the Virtual Private Network identification information determined by the identification information processing unit into the network.