COMMUNICATION METHOD AND DEVICE FOR CONNECTING A PLURALITY OF NETWORKS SIMULTANEOUSLY

摘要

PROBLEM TO BE SOLVED: To solve the conventional problem wherein an external network cannot be connected using a plurality of lines when a network is connected with the exterior using a plurality of paths.

SOLUTION: A communication device 1 transmits a search packet indicative of a transmission source address and an address by which the own device is connected to a network. A communication device 2 reads the address from the received search packet by which the communication device 1 is connected to the network, and transmits to the network a proposal packet in which the read address is used as a destination address and an address by which the communication device 2 is connected to the network is used as a transmission source address. The communication device 1 receives the proposal packet, and generates a group of an address of the own device and the transmission source address of the proposal packet. The communication device 1 selects one of the groups, and transfers a transmission packet to be transmitted from the communication device 1 to the communication device 2, using the address of the communication system 2 specified in the selected group as a destination.

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