一种多控制器的网络服务器集群负载均衡调度策略

A Multi-Controller Network Server Cluster Load Balancing Scheduling Strategy

为提高网络服务器集群中心宽带利用率、降低网络访问及传输时延,文章提出一种基于SDN的多控制器负载均衡调度策略。首先,构建多控制器的网络服务器集群负载均衡调度的总体框架,通过转发层采集网络交换设备的状态信息;然后,在多控制器单元生成全局网络视图,采用自适应网络大小流进行调度,以提高网络及传输时延为目标构建网络服务器集群负载均衡调度策略模型。最后,控制器单元更新流量表并对OpenFlow交换层设备进行更新,以实现网络服务器集群中心的网络负载均衡。

In order to improve the bandwidth utilization of network server cluster center and re-duce network access and transmission delay,a multi-controller load balancing scheduling strategy based on SDN is proposed in this paper.Firstly,the general frame of multi-controller network server cluster load balancing scheduling is constructed,and the state information of network switching equipment is collected through the forwarding layer.Then,the global network view is generated in the multi-controller unit,and the adaptive network size flow is used for schedu-ling.In order to improve the network and transmission delay,the load balancing scheduling strategy model of nctwork server cluster is constructed.Finally,the controller unit updates the flow meter and the OpenFlow switching layer device to achieve network load balancing in the center of the network server cluster.