A software-defined network control optimization method for large-scale applications

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) standard organization (Open Network Foundation, ONF), has been widely recognized and concerned by the industry due to its early implementation and high standardization; with the deployment and application of OpenFlow, the support of OpenFlow The performance bottlenecks of switching devices have emerged 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 Content Addressable Memory (TCAM) has always plagued the development of OpenFlow; in OpenFlow, coarse-grained traffic scheduling uses wildcard rules, and fine-grained traffi...

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Problems solved by technology

[0002] OpenFlow, promoted by the Open Network Foundation (ONF), a software-defined network (Software Defined Network, SDN) standard organization (Open Network Foundation, ONF), has been widely recognized and concerned by the industry due to its early implementation and high standardization; with the deployment and application of OpenFlow, the support of OpenFlow The performance bottlenecks of switching devices have emerged 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 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 scale of 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

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