A centralized multicast control method based on software definition

Abstract

The invention provides a software-defined centralized multicast control method, the steps of which are: S1: the multicast control center constructs a multicast centralized control architecture composed of three-level servers; S2: the multicast control center opens a group for legal multicast sources S3: The multicast control center determines the legal multicast members; S4: The multicast control center forms a multicast link database; S5: The multicast control center bases the Database, plan multicast path; S6: Multicast control center initiates multicast route delivery; S7: Multicast source forwards multicast data in user subnet, so that designated multicast receivers can receive multicast data; S8: End. The present invention performs global planning of multicast routing based on a software-defined manner, realizes self-defined multicast tasks in a network in which identification and routing are separated through a multicast routing centralized control mechanism, and ensures the safety and controllability of multicast data.

Description

technical field [0001] The invention relates to the field of computer networks, in particular to a software-defined centralized multicast control method. Background technique [0002] Current multicast control methods can be classified into centralized multicast control and distributed multicast control. Traditional Internet routing adopts fully distributed multicast routing control, and each node modifies its routing table by periodically exchanging routing status information with adjacent nodes. Distributed multicast routing control has a high dependence on links, and regular routing exchanges lead to low network routing efficiency. When the network topology changes, the time for updating and converging the multicast routing table is too long, which cannot meet the requirement of separation of identification and routing. Network requirements for multicast services in terms of performance guarantee and data security. In a network architecture where identity and location a...

AI Technical Summary

Problems solved by technology

The routing node controlled by the centralized multicast routing is no longer responsible for the generation of the route. The multicast routing planning and path calculation are completed by the multicast control center. The convergence speed of the multicast forwarding tree calculation is fast, but it does not separate the identity and location. The network provides multicast routing support

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