Method and device for balancing load of controllers

Abstract

An embodiment of the invention provides a method and a device for balancing load of controllers. The method includes selecting an overload controller among overload controllers in a current period and determining that the selected overload controller is a first controller; determining to-be-shifted exchange boards among exchange boards controlled by the first controller; dividing the to-be-shifted exchange boards into exchange board units; selecting a slave controller for each exchange board unit from common slave controllers of all the exchange boards in the exchange board unit and utilizing the slave controller of each exchange board unit as a target controller for the exchange board unit; transmitting shifting information to the first controller and each target controller to shift the exchange boards in each exchange board unit onto the corresponding target controller by the aid of the first controller. The overload controller is a controller determined from the various controllers according to locally recorded load values of the various controllers and preset first load thresholds. The method and the device for balancing the load of the controllers in the embodiment of the invention have the advantage that the load balancing time efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of computer networks, in particular to a controller load balancing method and device. Background technique [0002] SDN (Software Defined Network, Software Defined Network) is an important new network architecture in the future network. The core idea of ​​this architecture is to separate the control plane and data plane of network equipment and concentrate them on a centralized controller. The controller has a macro view of the entire SDN network and provides management views and programming interfaces to control the entire SDN network. The controller can calculate the flow entry required for forwarding the data packet or flow for the switch, and the switch only needs to forward the data packet according to the flow entry. In this way, the switch device can be simplified, which saves the device cost, and at the same time, the controllability and manageability of the entire network are also improved. Howeve...

AI Technical Summary

Problems solved by technology

In the above method, after the switch is migrated, the overload controller may still be overloaded, but in one cycle, only one switch of one overload controller can be migrated once, and the overload controller needs to be relocated in the next cycle. The load migration of the controller will cause the overloaded controller to be in an overloaded state for a long time, reducing the time efficiency of load balancing

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