A source-side controllable multicast data transmission system in SDN environment

Abstract

The invention discloses a source-end controllable multicast data transmission method and system in an SDN environment. The invention includes: the sender executes data sending, independently designates a collection of receiver hosts, controls data transmission more flexibly, and improves the security of data reception; the controller completes the data control service, and based on the global network topology view, forwards the data to the path Processes such as generation and data transmission are centrally controlled; the receiving end completes data reception, which is different from the multicast member program in the traditional network. It does not need frequent notifications with network intermediate devices, and only performs simple communication with the controller at most 2 times. At other times, it is just waiting or receiving data, which reduces the data processing pressure of network devices and saves link bandwidth. The present invention also provides a system for realizing the above method. The source-end controllable feature of the present invention improves the management and control capability of data transmission, and the data transmission based on the SDN network improves the data transmission efficiency.

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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