基于SDN架构的链路负载均衡策略的研究

The Research on Link Load Balancing Strategy Based on SDN Architecture

随着互联网规模的不断扩大,传统网络软硬结合负载均衡方式出现了可扩展性差、交换技术繁琐和自我调节能力差等问题。SDN(Software Definition Network)是传统网络架构的一次重大技术变革,SDN具有可软件编程和集中式控制的优势,可以更好地实现链路负载均衡和转发路径优化。本文通过分析SDN优势,实现了一种基于SDN架构的数据中心网络负载均衡策略,该策略利用SDN控制器集中监控整网,能基于网络的实时负载情况进行转发路径选择,实现了网络的负载均衡,提高了整个网络链路的带宽利用率。

With the incessant expansion of the internet scale,the traditional network load balancing method of combining hardware and software has some problems,such as poor scalability,tedious switching technology and poor self-regulation ability.SDN(Software Definition Network)is a major technological change in traditional network architecture.SDN has the advantages of software programming and centralized control,Load balancing and forwarding path optimization can be better realized.This paper mainly implemented a load balancing strategy based on SDN in data center network,which centralized monitoring of the whole network using SDN controller,selected Forwarding Path Based on Real-time Load of Network,realized load balancing of network,improved the bandwidth utilization of the whole network link.