SDN (Software Defined Network) multi-controller load balancing method and system

Abstract

The embodiments of the invention provide an SDN (Software Defined Network) multi-controller load balancing method and system. The method includes the following steps that: on the basis of the auctionmechanism of commodities, un-overloaded slave controllers participating in auction perform auction quote for the to-be-migrated switch of an overloaded slave controller; the overloaded slave controller selects an un-overloaded slave controller that maximizes the benefits of the overloaded slave controller as a target controller; and a master controller controls the overloaded slave controller andthe target slave controller, and the to-be-migrated switch is migrated from the overloaded slave controller to the target slave controller. According to the method and system of the embodiments of thepresent invention, before the overloaded slave controller selects the target slave controller, each un-overloaded slave controller analyzes whether the un-overloaded slave controller itself is overloaded after the to-be-migrated switch is migrated to the un-overloaded slave controller, and therefore, the problem of the overloading of the target controller which occurs after the to-be-migrated switch of the overloaded slave controller is migrated to the target slave controller can be solved.

Description

technical field [0001] The invention relates to the technical field of computer network management, in particular to an SDN multi-controller load balancing method and system. Background technique [0002] SDN (Software Defined Network, software defined network) is a network architecture based on software programmable, the core idea is to separate the control plane and data forwarding plane of the traditional network. As a new type of network architecture, SDN has become a research hotspot worldwide. [0003] In the existing SDN network structure, the control plane dominates and manages the data plane, also known as the "network operating system", which plays an increasingly important role in the development of SDN. However, with the increase of network scale and the increase of data transmission volume, SDN is also facing new problems. For example, when the network is large and there are many bottom data plane switches, the number of control flows sent to the controller wil...

AI Technical Summary

Problems solved by technology

[0005] Obviously, the disadvantage of the existing multi-controller load balancing technology is that it does not take into account the load of the target controller after the load migration of the overloaded controller, and does not consider the situation that multiple controllers are overloaded at the same time. After the migrated switch is migrated to the target controller, the target controller may be overloaded, and multiple overloaded controllers may migrate the switch to be migrated to the same target controller, which will cause the target controller to be overloaded. Multi-controller load balancing efficiency

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