Multicast data transmission method and device

Abstract

The invention discloses a multicast data transmission method and a device. The method comprises steps: an OpenFlow controller receives multicast data sent by a first OpenFlow network device, and a multicast destination address is analyzed in the multicast data; when no corresponding multicast table entry for maintaining the multicast destination address exists in the OpenFlow controller, the OpenFlow controller builds a multicast table entry corresponding to the multicast destination address; the OpenFlow controller sends a first stream table entry with the multicast destination address to the first OpenFlow network device, and the first stream table entry is used for indicating that the received destination IP address discarded by the first OpenFlow network device is the multicast data of the multicast destination address. In the embodiment of the invention, the first OpenFlow network device can be prevented from forwarding all the multicast data to the OpenFlow controller, and the processing performance of the OpenFlow controller is improved.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a multicast data transmission method and equipment. Background technique [0002] As a new network switching model, OpenFlow is a communication interface standard between the controller and the forwarding layer defined in the SDN (Software Defined Network) architecture. Its basic idea is to separate the control plane and the data plane. Use standard protocols to communicate with each other, and the data plane adopts flow-based forwarding. Such as figure 1 As shown, it is a schematic diagram of a networking of an OpenFlow network, in which an OpenFlow network specifically includes an OpenFlow network device (such as an OpenFlow switch), an OpenFlow controller (OpenFlow Controller), and an OpenFlow channel. [0003] Wherein, the OpenFlow channel is located between the OpenFlow network device and the OpenFlow controller, and performs secure communication through a pr...

AI Technical Summary

Problems solved by technology

[0005] In the prior art, for multicast data, the OpenFlow controller will create a flow entry on the OpenFlow network device, and the flow entry contains information about the multicast source device and information about the receiver device, and if there is no information about the receiver device In this case, the OpenFlow controller will not send flow entries to the OpenFlow network device. At this time, when the OpenFlow network device receives multicast data, it cannot match the corresponding flow entry. The OpenFlow network device needs to pass the OpenFlow channel to the The received multicast data is forwarded to the OpenFlow controller, and all multicast data is forwarded to the OpenFlow controller for processing, which has a great impact on the OpenFlow controller and reduces the processing performance of the OpenFlow controller

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