SDN network data transmission system based on Vlan and method thereof

Abstract

The invention provides a SDN network data transmission system based on Vlan and a method thereof. The system comprises a network controller supporting to issue a flow table and a network switch supporting a plurality of flow tables, wherein the network controller is used for acquiring a topology structure of the network switch, distributing a VID label of Vlan for each network switch, realizing a fixed transmission path based on a forwarding flow table rule of the Vlan, responding to a terminal equipment communication request, setting and dismounting the VID label based on the Vlan, and entering and exiting the fixed transmission path; and the network switch is used for establishing a data flow table of the VID label based on the Vlan. In the invention, an order of magnitude of a SDN network flow table can be effectively reduced and switch performance is effectively increased; path calculating time of each communication and a flow table issuing number can be reduced, and a data communication speed is effectively increased; and broadcast addressing requests in a network can be decreased and transmission delay is reduced.

Description

technical field [0001] The invention belongs to the field of computer networks, in particular to a Vlan-based SDN network data transmission system and method. Background technique [0002] With the advent of the big data era, the east-west traffic data in the data center increases, and the demand for internal network transmission continues to increase. Traditional network switching can no longer meet the network requirements of data centers. Under the background of increasing demand in the entire industry, how to efficiently use the network has become an urgent need for each data center. [0003] SDN technology has only initially fulfilled the requirements of centralized control, and has not shown its advantages over traditional network switches in deep-level applications. For example, N*N terminals, in the worst case, will generate N^2 flow tables, which will lead to a sharp decline in the performance of the network switch. At the same time, each pair of data transmission ...

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Problems solved by technology

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a Vlan-based SDN network data transmission system and method, which is used to solve the problem that the calculation time between network switching devices in the prior art is too long and the transmission delay is relatively long , The excessive number of redundant flow tables leads to the performance degradation of network switches, etc.

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