COMMUNICATION INTERFACE SWITCHING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a communication system by which application communication can be continued even if network interfaces are switched by such a reason as that a system is moved in a home network. SOLUTION: In this system, a system suitable for an environment of such a home network that information about equipment connected to the home network is obtained and a technique optimal to situations such as the case of switching to then interface of the same subnet and the case that a communication partner has a similar system is adopted. This communication interface switching system is characterized by being provided with a means for performing advertisement by a Gratuitous ARP; a means for continuing communication by performing the IPinIP encapsulation of an IP header and a means for performing the setting of a fixed transmitting address, address conversion and/or a packet relay by the home network HA. COPYRIGHT: (C)2008,JPO&INPIT