The Research And Implementation Of The Load Balancing Mechanism Based On OpenFlow

From the beginning to the age of the Internet,and then to the mobile Internet era,convenience for people to access the network,has brought the huge data traffic for the entire network,for data center how to manage these many users' access and task request is becoming more and more important.Now in the network architecture,data centers often use multiple servers form the cluster approach to load a large task request in the network,and application of load balancing mechanisms for task allocation management.Under the current network architecture,load balancing mechanism with many restrictive factors,such as hard access to the states of network nodes,the complex flow guide mode.SDN network architecture has many advantages,its separation of data forwarding layer and data control layer,has brought new ideas to solve the characteristic control ability of the global network topology to many fields,its architecture is very suitable for the load balancing mechanism.This paper studies and analyzes the composition and principle of OpenFlow network architecture,and ananalyzed the traditional load balancing mechanism,from the different classification of load balancing as the breakthrough point,analyzes various load balancing mechanism of advantages and disadvantages,and only reserves advantages.This paper also summarized the various traditional load balancing algorithm and dynamic load balancing algorithm based on the idea of feedback model,through the analysis of the advantages and disadvantages to aid in the design of load balancing mechanism research.Based on the above research and study,this paper designed a load balancing mechanism of OpenFlow network architecture based on their.This set of dynamic feedback mechanism based on the idea of using OpenFlow controller with the change of global network topology and excellent data control ability to obtain the real-time network status,distribution through the realization of load balancing algorithm in the controller to control the network task.In the load distribution algorithm,on one hand this paper introduced according to the content request properties were assigned to choose more suitable for processing thoughts,task specific server,so as to improve the task processing speed.On the other hand through the selection of a candidate set in the choice of the server,and then for the redistribution of the ideas to solve the problems of the single point of overload short,this is a very good solution to the effect caused by a large number of requests to cluster network burst.Finally this paper made experiments to test the validity of the designed mechanism.The experimental environment deployment in Mininet network simulation platform,through comparing with the fastest response time and round robin algorithm to prove that the mechanism can achieve the ideal speed in the response time and task processing speed.