| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To achieve an IP network system capable of causing a packet to arrive with reliability even if a trouble occurs to any of routers. <P>SOLUTION: In the IP network system wherein packet communication is executed between respective hosts through the intermediary of a ring network comprised of at least a plurality of repeaters, the respective repeaters comprise an arithmetic and control unit for transferring a packet to the host at a transmission destination via a clockwise route, and a counterclockwise route, in the ring network, respectively, on the basis of transfer direction information contained in a tunneling packet generated on the basis of a packet transmitted from the host at a transmission source, as one of the respective hosts, to the host at the transmission destination, and subjected to multicast transmission to a multicast address where the host at the transmission destination belongs. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
