| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique which specifies multicast path information in real time by using a flow information output function. <P>SOLUTION: A network topology calculation part 102 manages information associating a router identifier of a router, its IF information, router identifiers of routers adjacent to the router, and their IF information with each other, on the basis of MIB information. A multicast path information collection part 104 manages information associating multicast group addresses, the router identifier, and outflow IF information with each other, on the basis of option information of flow information or multicast path information described in flow information. A multicast forwarding path calculation part 105 associates multicast group addresses, the router identifier, its outflow IF information, router identifiers of routers adjacent to the router, and their outflow IF information with each other, on the basis of information managed by the network topology calculation part 102 and information managed by the multicast path information collection part 104. <P>COPYRIGHT: (C)2009,JPO&INPIT |
