Multicast forwarding method and device based on FPGA accelerator and multicast router

Abstract

The embodiment of the invention relates to a multicast forwarding method and device based on an FPGA accelerator and a multicast router, and the method comprises the steps: generating a polling data message when a network is determined to be in a blocked state; according to the polling data message, obtaining a network topology structure based on FPGA accelerator point-to-point communication; selecting an optimal data forwarding path from the network topology structure; and forwarding the data message to be forwarded to the destination address through the optimal data forwarding path. In the process, it is fully considered that the FPGA accelerator not only can access the multicast router, but also can realize high-speed interconnection with other FPGA accelerators under other multicast routers, so that point-to-point communication of the FPGA accelerators is realized. And more diverse multicast forwarding selections are provided for the multicast router in a network congestion state and the like. The problem of data transmission delay and the like caused by network congestion of a common multicast router in a plane multicast network is solved.

Description

technical field [0001] Embodiments of the present invention relate to the field of computer technologies, and in particular, to a method and device for multicast forwarding based on an FPGA accelerator, and a multicast router. Background technique [0002] IP multicast adopts a multicast routing protocol, which establishes multicast routing entries hop-by-hop between the receiver and the sender (multicast source). forward until the recipient. In this process, a multicast distribution tree with the sender as the root and the multicast routers and receivers as the leaves is constructed. Corresponding multicast packets are replicated on each multicast router from the root node to the leaves until the receiver. [0003] In multicast, the sender of information is called the "multicast source", the receiver of the information is called the "multicast group" of the information, and the router that supports the transmission of multicast information is called the "multicast router"...

AI Technical Summary

Problems solved by technology

However, when the number of multicast sources and network data packets to be transmitted increases, multicast routers are prone to buffer congestion, which in turn leads to the occurrence of entire network congestion.

And once the running multicast router fails, the multicast services of the terminals connected under the branch tree of the multicast router will also be affected

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