Control method and control device of software defined network

A software-defined network and control method technology, which is applied in the field of software-defined network control methods and control devices, can solve the problems of large signaling overhead and large controller calculations, and achieve the effect of removing congestion and improving efficiency

Inactive Publication Date: 2017-12-12
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present application provides a software-defined network control method and control device to solve the problem that the software-defined network adopts congestion management at the terminal, but the signaling overhead is large and the controller has a large amount of calculation

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  • Control method and control device of software defined network

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Embodiment Construction

[0029] Embodiments of the present invention provide a software-defined network control method and control device, which can effectively schedule network congestion levels and prevent links in the network from exceeding the upper limit of congestion.

[0030] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0031] figure 1 It is a flow chart of the control method of the software-defined netw...

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Abstract

The invention discloses a control method and a control device of a software defined network. The control method comprises the following steps of when a load of a link is greater than a preset congestion upper limit, determining the link as a link with highest critical degree; and changing a forwarding flow table of a data flow in the link with the highest critical degree and delivering the forwarding flow table, so as to enable the data flow to transmit according to a forwarding routing corresponding to the forwarding flow table. When a controller determines the link with the highest critical degree, the forwarding flow table of the data flow passing the link with the highest critical degree is modified, so that the data flow in the link with the highest critical degree is transmitted through other forwarding paths, therefore, the congestion of the link with highest critical degree is relieved, and the network efficiency is improved.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a control method and a control device for a software-defined network. Background technique [0002] In order to solve the problem of network congestion in the process of data communication, the software-defined network (Software Defined Network) based on the Openflow protocol has been widely used; the software-defined network includes Openflow switches and controllers; the controller maintains the network topology and establishes end-to-end data The transmitted flow table, and sends the flow table to the corresponding Openflow switch, so that the data flow is transmitted in the forwarding path determined by the flow table. [0003] In order to avoid network congestion, the controller needs to monitor the traffic status of the network to avoid serious network congestion problems. At present, the controller monitors the link load status of the network core l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/803H04L12/721
CPCH04L45/38H04L45/70H04L47/122
Inventor 左强
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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