| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce number of relay stages by relay routers while minimizing the increase in entry number of a forwarding table of terminals or a terminal accommodation device accommodating them by building up a logical packet transfer network on a physical transfer network. SOLUTION: In-group address processing servers 14, 24 manage address information in a group and report a set of addresses on a packet transfer network used by the group and addresses on a physical transfer network of packet forwarders 15, 25 to all in-group processing servers 14, 24 via an inter-group address processing server 101 and inform each of terminals 11-1, 11-2,..., 21-1, 21-2,..., terminal accommodation devices 12-1, 12-2,..., 21-1,..., of them and the packet forwarders 15, 25, and packet communication in the group is conducted directly based on the noticed information the packet communication between groups is conducted via the packet forwarders 15, 25 of a destination group denoted in the noticed information.</p> |
