SDN multi-controller deployment method for reducing management load overhead

A multi-controller and controller technology, applied in the direction of digital transmission system, electrical components, transmission system, etc., can solve the problem of indirect node and link state management consistency maintenance requirements are also very high, and the control plane ownership division optimization of switching equipment And other issues

Active Publication Date: 2014-09-24
DALIAN UNIV OF TECH
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Problems solved by technology

However, in large-scale network deployment, the number and location of controllers directly determine the cost efficiency of the network. At the same time, how to optimize the control plane ownership of switching devices is also difficult. The controller maintains consistency in the management of indirect nodes and link states. very demanding

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  • SDN multi-controller deployment method for reducing management load overhead
  • SDN multi-controller deployment method for reducing management load overhead

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing, the present invention is further described

[0028] Such as figure 1 As shown, the SDN network topology graph is abstracted into a bipartite graph. The multi-controller collaborative management model can be abstracted as given the network topology and the number of controllers, the number of controllers required by the network and the connection mode between all switches in the network and each controller are obtained by calculation, and then Then consider the communication between the switch and the controller, and the coordination between the controllers and other issues. The solution to be adopted is to transform multi-controller deployment and collaborative management into a problem of equipment location without capacity limitation, so as to propose a measure that reflects the management load of the controller, and build a mathematical model of the management load of the controller based on this . Then use linear pr...

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Abstract

The invention discloses an SDN multi-controller deployment novel method for reducing management load overhead, belonging to the technical field of the software defined network (SDN). The method is characterized in that the management load of a software defined network (SDN) controller is used as a decision variable, and a mathematical model about controller management load is constructed. An original SDN network multi-controller deployment problem is abstracted to be a graph theory problem, the graph theory problem is converted into an integer linear programming problem through establishing the mathematical model, and an NP difficult problem is solved by using an approximate algorithm. According to the method, in the process of constructing the mathematical model of the multi-controller deployment problem, the network performance and the management load of the SDN controller are creatively taken into consideration, effective deployment schemes can be provided for different SDN networks, the reasonable selection and effective deployment of the number of multiple controllers are realized, and the normal and effective operation of the SDN network in the condition of the satisfaction of certain network performance and minimum cost are ensured.

Description

technical field [0001] The invention belongs to the technical field of software-defined network (SDN), and relates to an SDN multi-controller deployment method for reducing management load overhead. Background technique [0002] With the rapid expansion of the network scale and the continuous emergence of new technologies and applications, the traditional network architecture and design concepts have gradually exposed serious deficiencies. In order to break the closedness of the network architecture, promote the openness of the network After laying the foundation, the idea of ​​Software Defined Network (SDN) came into being. In order to open network functions to upper-layer applications, SDN separates the logical control plane of network equipment from the data forwarding plane, and uses centralized control to realize the programmability of network equipment. Compared with traditional networks, SDN simplifies network management and configuration operations, reduces the comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24
Inventor 李克秋陆骏齐恒喻海生
Owner DALIAN UNIV OF TECH
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