Controller load balancing system and method based on efficient switch migration

A load balancing and controller technology, applied in the field of communications, can solve the problems of uneven controller load and low migration efficiency.

Active Publication Date: 2020-09-25
XIDIAN UNIV
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies in the prior art, and propose a controller load balancing system and method based on efficient switch migration, which solves the problems of uneven controller load and low migration efficiency in elastic optical networks, and improves Efficiency of Controller Load Balancing

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  • Controller load balancing system and method based on efficient switch migration
  • Controller load balancing system and method based on efficient switch migration
  • Controller load balancing system and method based on efficient switch migration

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Embodiment Construction

[0057] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0058] In the traditional small-scale elastic optical network, there are few flow request messages, and a single controller can easily handle it. However, when the network scale expands, the single controller will cause scalability problems due to its own capacity limitation. In a large-scale network, it is proposed to use distributed multi-controllers to control multiple sub-domain networks to improve the scalability of the network. However, unreasonable deployment of multiple controllers leads to unbalanced distribution of controller load. Although the existing switch migration methods can effectively improve the load balancing performance of the controller to a certain extent, their efficiency is low because, during the switch migration process, a large number of migration costs will be generated, and after the switch migration, the controll...

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Abstract

The invention discloses a controller load balancing system and method based on efficient switch migration. The system comprises a switch, an agent, a controller additionally provided with a load measurement module, a switch selection module, a target controller selection module and a switch migration module, and a sub-domain network. The method comprises the following steps: collecting load information of each sub-domain network through a controller; judging the load state of the controller, outputting the overload controller and the light load controller set, selecting the switch to be migrated by minimizing the migration cost, and migrating the switch from the switch set controlled by the overload controller to the switch set controlled by the light load controller to realize the balanced distribution of the load of the controller. The method is used in an elastic optical network with interconnected data centers, and the load balancing effect of the controller is remarkable.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a controller load balancing system and method based on efficient switch migration in the technical field of network communication. The present invention can be used in elastic optical network under software defined network to balance the load of multiple controllers when deploying statically matched controllers. Background technique [0002] Software-defined networking is an important data center network architecture, which is widely used in elastic optical networks interconnected by data centers. Since the software-defined network with a single-controller structure cannot cope with the increasing network traffic, the multi-controller solution came into being. At this point, the network is divided into multiple sub-networks, and each sub-network has a controller to manage switches and flow request messages. However, with the dynamic change of network traffic, the co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/803
CPCH04L47/125
Inventor 顾华玺刘勇王云灏王琨余晓杉魏雯婷
Owner XIDIAN UNIV
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