A software-defined network multi-controller deployment method
A software-defined network, multi-controller technology, applied in electrical components, transmission systems, etc., to improve clustering effect and convergence accuracy, balanced control domain division and controller deployment.
Active Publication Date: 2022-04-12
TIANJIN CHENGJIAN UNIV +1
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At the same time, aiming at the limitation of the bias parameter and convergence coefficient in the AP algorithm to the clustering effect of the AP algorithm, the particle swarm algorithm is used to intelligently adjust the bias parameter and convergence coefficient in the AP algorithm as particles to improve the clustering effect. Class effect and convergence accuracy, to achieve balanced SDN control domain division and controller deployment
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[0051] The present invention will be further described below through specific embodiments and accompanying drawings. The embodiments of the present invention are for better understanding of the present invention by those skilled in the art, and do not limit the present invention in any way.
[0052] The present invention is a software-defined network multi-controller deployment method, such as Figure 5 As shown, the main steps include: first, obtain the OpenFlow network topology; second, define the similarity S(i, j) between switches, and establish a similarity matrix; third, calculate the communication cost from the switch to the controller, the inter-domain communication cost, Controller deployment cost; then, establish the OpenFlow network communication cost model:
[0053] Distributed SDN network topology such as figure 1 As shown, the SDN network is divided into different network domains according to the scope of the switches managed by the controllers. Each controlle...
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The invention discloses a software-defined network multi-controller deployment method. Firstly, the OpenFlow network topology is obtained; secondly, the similarity S(i, j) between switches is defined, and a similarity matrix is established; thirdly, the communication cost from the switchboard to the controller is calculated. , inter-domain communication cost, and controller deployment cost; then, the OpenFlow network communication cost model is established; finally, the controller placement location is solved through the improved neighbor propagation algorithm. The deployment method of the present invention does not need to specify the number of controllers, and the network delay is small, and the network communication cost of the system is low.
Description
technical field [0001] The invention belongs to the field of multi-controller static deployment, and in particular relates to a software-defined network multi-controller deployment method. Background technique [0002] Software-defined networking (SDN) adopts a network architecture that separates control and forwarding, and uses the OpenFlow protocol to separate the control layer from traditional switching devices, so as to control the network more flexibly. The logically centralized programmable controller in the control plane can grasp the global network information, which is convenient for operators and scientific researchers to flexibly adjust and deploy the network. With the increasing deployment of SDN in actual large-scale network topologies and wide area networks, the network scale that a single controller can support is limited. When network devices are widely distributed across regions, the transmission distance between controller domain switches is too far to caus...
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IPC IPC(8): H04L41/12H04L41/14H04L45/02H04L45/121H04L43/0852
CPCH04L41/12H04L41/145H04L43/0852H04L45/02H04L45/121
Inventor 李国燕张志钢刘毅邵荣强高天迎陈亚东
Owner TIANJIN CHENGJIAN UNIV