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Software defined network control optimizing method facing large-scale application

A software-defined network, large-scale application technology, applied in data exchange networks, electrical components, digital transmission systems, etc., can solve problems affecting network performance, control channel congestion, flow table size troubles, etc., to reduce dependencies and reduce round trips Effects of latency, congestion avoidance, and throughput degradation

Active Publication Date: 2013-11-20
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] OpenFlow, promoted by the Open Network Foundation (ONF), a software-defined network (Software Defined Network, SDN), has been widely recognized and concerned by the industry due to its early implementation and high standardization; with the deployment and application of OpenFlow, it supports OpenFlow The performance bottlenecks of switching devices have appeared one after another, and OpenFlow has also been upgraded from V1.0 to the current V1.3.1 through continuous improvement and improvement. The size of the flow table limited by Temary Content Addressable Memory (TCAM) has always plagued the development of OpenFlow; in OpenFlow, coarse-grained traffic scheduling uses wildcard rules, and fine-grained traffic scheduling uses the active data pull method of the controller (stat -pulling); when the network is large enough, the data pulling method will make the number of packets per second of the control channel very large, which will lead to the congestion of the control channel and directly affect the network performance

Method used

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Embodiment Construction

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0026] figure 1 A flow chart of a large-scale application-oriented software-defined network control optimization method in an embodiment of the present invention is shown;

[0027] The data packet forwarding rule of described method is defined in the TCAM of OpenFlow decision switching equipment and OpenFlow entrance switching equipment; Concrete steps are:

[0028] (1) After analyzing the OpenFlow flow table, the OpenFlow controller divides the decision-making control domain into N decision-making areas, where N is at least 2; each decision-making area includes M OpenFlow decision-making switching devices, and M is at least 2;

[0029] (2) The OpenFlow controller updates the packet forwarding rules in the decision area to the OpenFlow decision switching devices in the deci...

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Abstract

The invention provides a software defined network control optimization method facing large-scale application. The software defined network control optimization method comprises the following steps: 1, an OpenFlow controller analyzes an OpenFlow flow table and divides a decision control region into N decision regions; 2, the OpenFlow controller updates a data packet forwarding rule of the decision regions into OpenFlow decision switching equipment; 3, OpenFlow entrance switching equipment analyzes a data packet and sends the data packet to OpenFlow exit switching equipment or forwards a forward path request flow table of the data packet to the OpenFlow decision switching equipment; 4, the OpenFlow decision switching equipment analyzes the forward path request flow table and forwards the data packet to the OpenFlow exit switching equipment corresponding to a forwarding rule; 5, the OpenFlow controller updates the forwarding rule of the data packet to the OpenFlow entrance switching equipment. Compared with the prior art, the software defined network control optimization method facing the large-scale application provided by the invention can effectively reduce the round-trip-delay of a network and the dependency of the data packet on the controller, improves the network throughput, and is applicable to large-scale network application.

Description

technical field [0001] The invention relates to a network control optimization method, in particular to a large-scale application-oriented software-defined network control optimization method. Background technique [0002] OpenFlow, promoted by the Open Network Foundation (ONF), a software-defined network (Software Defined Network, SDN), has been widely recognized and concerned by the industry due to its early implementation and high standardization; with the deployment and application of OpenFlow, it supports OpenFlow The performance bottlenecks of switching devices have appeared one after another, and OpenFlow has also been upgraded from V1.0 to the current V1.3.1 through continuous improvement and improvement. The size of the flow table limited by Temary Content Addressable Memory (TCAM) has always plagued the development of OpenFlow; in OpenFlow, coarse-grained traffic scheduling uses wildcard rules, and fine-grained traffic scheduling uses the active data pull method of...

Claims

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Application Information

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IPC IPC(8): H04L12/801H04L12/841
Inventor 刘川吴军民吴鹏陈磊陶静张刚黄在朝黄辉邓辉王玮沈文侯功喻强姚启桂于海虞跃张增华王向群李春龙孙晓艳王鹤于鹏飞陈伟任杰黄治
Owner STATE GRID CORP OF CHINA
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