| 摘要 |
PROBLEM TO BE SOLVED: To provide a network system which suppresses network congestion by outputting data to an appropriate port, without performing IGMP snooping by a network switch transferring data encapsulated in multistage.SOLUTION: A network system includes a plurality of repeating devices and a network controller. The plurality of repeating devices includes a first edge repeating device, a second edge repeating device, and a core repeating device. The network controller selects a route between the first edge repeating device transmitted the participation notice data and the second edge repeating device transmitted the participation notice data, selects a core repeating device on the route, selects an output port for outputting the data of destination address for use in multicast communication in which the terminal participates, and transmits a setting instruction for setting the relation of the destination address and output port in the search information of the core repeating device.SELECTED DRAWING: Figure 9 |
