NETWORK COMMUNICATION DEVICE, METHOD FOR SELECTING USE NETWORK INTERFACE PART, METHOD FOR PERFORMING PACKET TRANSMISSION/RECEPTION, COMPUTER PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To implement appropriate selection of a network interface part while suppressing suspension of communication using a network communication device caused by switching of the network interface part.

SOLUTION: A network relay device comprises: a plurality of first network interface parts; a communication processing part; an interface selection part for selecting a use network interface part on the basis of a predetermined first condition; and a switching determination part for determining the propriety of switching to a newly selected first network interface part on the basis of a predetermined second condition related to effectiveness of logical connection through an already-selected network interface part, when the first network interface part newly selected as a use network interface part is different from the already-selected network interface part.

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