DCNS:一种高可用性的数据中心网络  

DCNS:A High Available Data Center Network Topology

作　　者：冷飞[1] 徐进华[1] 栾仕喜[1] 

机构地区：[1]苏州大学信息中心

出　　处：《计算机科学》2013年第12期177-181,共5页Computer Science

基　　金：江苏省自然科学基金项目(102042)资助

摘　　要：近年来,随着云计算技术的飞速发展,数据中心网络作为底层基础设施,发挥着越来越重要的作用。数据中心网络能够为各种云计算环境提供良好的服务。这几年在研究云计算的同时,数据中心也是一个重要的研究热点。学习了一些新的拓扑结构,主要包括Fat-tree、DCell以及BCube等。而这些方案在系统扩展太快或者太慢的情况下,都在不同程度上有一些性能的瓶颈或者在路由以及结构的构建上有比较高的代价。提出了一个代价有效并且具有很强扩展性和容错性的数据中心网络———DCNS。其混合了DCell以及BCube的优点,避免了它们各自的缺点。之后提出了一个针对DCNS的容错路由机制。最后,使用一个合适的测试环境来测试该数据中心网络架构的有效性。实验表明,DCNS能较好地满足数据中心对网络结构的要求,并且能够保证系统的可用性。In recent years, with the rapid development of cloud computing technology, the data center network which acts as the underlying infrastructure of cloud computing, plays an increasingly important role. But there are some fail- ures in the network, which requires a strong and effective recovery mechanism to ensure data center available. The net- work structure plays an important role in the availability of the data center network. Data center network can provide various cloud computing services. As a result, data center networking has recently been a hot research topic in both aca- demia and industry. A fundamental challenge in this research is the design of the data center network that interconnects the massive number of servers, and provides efficient and fault-tolerant routing service to upper-layer applications. In re- sponse to this challenge, the research community has begun exploring novel interconnect topologies including Fat-Tree, DCell,and BCube,etc. Extention of the proposed solutions is either too fast （i. e. , double exponentially） or too slow, they suffer from performance bottlenecks, or can be quite costly in both routing and construction. This paper proposed a cost-effective, gracefully scalable, and fault-tolerant data center interconnect termed DCNS that combines the advantages of both DCell and BCube architectures while avoiding their limitations. We then proposed fault-tolerant and routing mechanisms for DCNS. Finally, we proposed a comprehensive benchmarking environment that can be used for accurately and practically evaluating and testing the proposed data center architecture. Experimental results show that DCNS can better meet requirements of the data center network architecture and ensure system availability.

关 键 词：数据中心网络 失效恢复 网络结构 可用性 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]