Multicast method based on SDN
A multicast group and multicast source technology, applied in advanced technologies, digital transmission systems, electrical components, etc., can solve problems such as extra overhead, single-point failure of the root node, performance bottlenecks, etc., and achieve the effect of avoiding network resource consumption
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[0041] The SDN-based multicast method of this embodiment is implemented by a multicast module located at the core control layer in the SDN controller, and the multicast module is connected with a topology discovery / management module, a resource management module, a routing calculation module, a virtualization module, Network monitoring module interaction. The architecture of the SDN controller is as follows figure 1 As shown, it includes the northbound interface, the core control layer, and the southbound interface.
[0042] Such as figure 2 As shown, the device implementing the SDN-based multicast method of this embodiment includes an SDN controller, a forwarding device, and a host computer; Such information is reported to the logically centralized SDN controller in real time, and the joining and leaving of multicast group members and the registration information of multicast sources are also reported to the SDN controller in real time, so that the SDN controller can grasp...
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