| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain an overlay multicast packet communication system enabling efficient overlay multicast communication by suppressing consumption in a communication line having a narrow bandwidth. <P>SOLUTION: The overlay multicast packet communication system is divided into a plurality of subaggregates comprising a group of control units connected without using any narrow-band communication paths based on the width of a physical communication path, where the respective control units are connected by the aggregate of the control units. The control unit in each subaggregate communicatively forms a logical communication path without using the communication path between the subaggregates. A first control unit in charge of distribution transmits a multicast packet to one second control unit selected per subaggregate by unicast. The second control unit duplicates a packet and distributes it to the control unit of a distribution destination belonging to the same subaggregate along the logical communication path. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
