METHOD AND SYSTEM FOR PEER-TO-PEER COMMUNICATION

摘要

PROBLEM TO BE SOLVED: To provide a method and a system for peer-to-peer (P2P) closed user group (CUG) communication that can avoid an increase in a secure association (SA) number even when communication parties become large in number during P2P CUG communication.

SOLUTION: An IP tunnel is formed by establishing SA by tunneling mode of IP Sec between adjacent router devices among 1-1 to 1-i on a WAN line 4 of an IP network wherein the router devices 1-1 to 1-i are connected. Consequently, a logical link network is constituted among the router devices 1-1 to 1-i.

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