Source controllable multicast data transmission method and system thereof under SDN Environment

Abstract

The present invention discloses a source controllable multicast data transmission method and a system under SDN Environment. The method comprises: a sender performs data transmission and autonomously appoints the collection of receiver host machines, in order to more flexibly control data transmission and improve data receiving safety; a controller finishes data control service and controls data transfer path generation, data transmission and other processes in a centralized manner based on a global view of network topology; the receiver finishes data receiving operation, differs from a multicast member program in the conventional network, needs no frequent communication with a network intermediate device to only have simple communication with the controller up to two times and wait or receive data in other time, so that data processing pressure of the network equipment is reduced, and link bandwidth is saved. The invention further provides a system realizing the above method. The source controllable features of the method and the system allows data transmission control capability to be improved, and allows data transmission efficiency to be developed due to data transmission based on SDN network.

Description

technical field [0001] The invention belongs to the technical field of data transmission of innovative networks, and more specifically relates to a source-end controllable multicast data transmission method and system in an SDN environment. Background technique [0002] Software Defined Network (Software Defined Network, hereinafter referred to as SDN) is an innovative network architecture. OpenFlow is a technical method to realize SDN. Transmission schemes and applications provide a good platform. [0003] SDN-based OpenFlow implementation technology includes at least three parts: OpenFlow switch, controller and OpenFlow protocol. Among them, the OpenFlow switch stores a flow table, which is composed of multiple flow table items, and each flow table item corresponds to a data forwarding rule; the controller completes all data control logic in the network. There are many open-source controllers, such as pox written in python, ryu, and floodlight written in Java. The contro...

AI Technical Summary

Problems solved by technology

In traditional networks, in order to improve data transmission efficiency, multicast technology is used in application scenarios where multiple data receivers exist, such as multimedia applications and group video services. It is difficult for broadcasting technology to meet the requirements of complete controllability and security

And in the distributed multi-copy storage scenario of the data center, file blocks need to be sent to the designated destination host. The traditional method is to perform multiple single data transmissions, which wastes link bandwidth.

[0005] For the above application scenarios, the main problem is that the traditional network is not flexible enough to control the network data flow, and the traditional multicast technology cannot meet the requirements of some application scenarios

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