COMMUNICATION NODE, CONTROL DEVICE, COMMUNICATION SYSTEM, METHOD AND COMMUNICATION PROGRAM

摘要

The invention makes it possible to accommodate communication groups that can potentially exceed 4K, and to implement communication that is not constrained by VLANs to which terminals belong. A communication node is provided with: a group information storage unit that stores correspondence relationships between first communication group information that identifies communication groups in a first network, and second communication group information that identifies communication groups in a second network that can accommodate a larger number of communication groups than the first network; and a packet processing unit that refers to the group information to convert between first communication group information and second communication group information included in received packet(s). Communication is thus realized between terminals in which the first communication group information is different.