Research And Implementation Of Load Balancer In SDN Network Of Data Center

With the development of big data,cloud computing,AI and other business areas,the data center has also undergone significant changes with the development of new technologies.As the infrastructure to provide data interaction,data centers need to expand their capacity,and the network of data centers should be expanded to provide more complex and diverse network business functions.This makes the rapid growth of network traffic,meanwhile,the load of network traffic in data centers become a research hotspot.But,because of the static operation mode and rigid management method inherent in traditional network structure,network traffic can only be scheduled through traditional flooding and routing,causing the research on traffic scheduling in data center develops slowly.After many years of development,SDN has made great breakthroughs in network control and forwarding separation.Through centralized control,SDN technology has been used and deployed widely in data center network,through programmable hardware/software to achieve fine-grained traffic control.The load balancing of data center network based on SDN network architecture is a load balancing service based on the existing SDN and Neutron virtual network technology.It realizes the LBaaS function in Neutron and combines the advantages of SDN centralized control,making the data center network more efficient,flexible and controllable.This thesis applies the SDN network architecture to the data center network,and implements an SDN-based load balancing scheduling scheme by using network technologies such as VLAN,VXLAN,and PBR,which makes traffic scheduling more intelligent,thereby improving network resource utilization.By studying the deployment and application of the load balancer in the data center SDN network,based on the network plan of the load balancer incorporated into the data center management and control,an implementation scheme of introducing the load balancing technology into the data center SDN network management and control is proposed,so as to meet the load balancing demand of the enterprise level network.The main work of the thesis is as follows:(1)Incorporate the load balancer into the data center SDN network.Select the load balancer deployment mode suitable for the data center network,and put the load balancer into the SDN controller control to ensure that its function is available and interoperable with the related device.(2)Traffic that does not require load balancing does not pass through the load balancer,avoiding irrelevant traffic impacting the load balancer.After the load balancer is incorporate into the data center network,traffic that does not require load balancing does not pass through the load balancer,and the original data center networking traffic is not affected regardless of whether the load balancer is available normally.(3)To realize the services provided by the SDN network,the traffic accessed from the extra-cloud and intra-cloud network is loaded to different servers.(4)To achieve dynamic deployment and deletion of load balancing services,ensuring that cloud users can apply and release on demand.As a device that provides LBaaS services,the services provided should be dynamically deployed and deleted to ensure that the original data center network is not affected when it is operated.