数据中心网络路由研究进展

随着云计算的迅速发展,运营商对数据中心的需求与日俱增.作为数据中心网络的关键技术,路由负责在数据中心内部以及数据中心之间为流量选路,为不同服务质量要求的流量提供差异化的路由转发服务.当数据中心规模比较大时,由于应用不可预估的通信流量以及数据中心网络的拓扑特点,传统因特网路由方法不能提供令人满意的高吞吐率和资源利用率,网...

Research progress of routing techniques for data center networks

Due to the rapid development of cloud computing, the demand of Internet service providers for data centers is increasing rapidly. As a key technology of data center networks, routing is responsible for selecting routes for network traffic within or across data centers. It can also provide diffe- rential services for traffic with different QoS (Quality of Service) requirements. However, for large-scale data centers, due to the unpredictable traffic of applications and the topology characteristic of data centers, the traditional routing methods in the Internet cannot provide satisfactory high throughput and resource utilization. Network congestion make it hard to provide guaranteed bandwidth or transmission delay for flows with the demand of QoS. This paper classifies and compares the routing problems in data centers, and then emphatically introduces the research progress about the unicast routing methods. Further, the congestion-aware routing methods are introduced. Finally, the routing technology of the new data center networks is discussed.