云计算数据中心网络设计综述

Review of the Design of Data Center Network for Cloud Computing

在云计算技术趋势的影响下,数据中心网络正发生着深刻的变革,不仅体现在规模、带宽、多链路、扩展性、灵活性的提升和成本的降低上,而且还体现在对虚拟机动态迁移的支持以及网络虚拟化等方面.围绕云计算数据中心网络所面临的主要挑战,首先,从交换机为中心和服务器为中心的2个角度分别展开论述了云计算数据中心的网络体系架构;其次,从网络资源灵活部署的角度,详细分析了云计算数据中心虚拟机动态迁移的相关协议与关键技术;然后,从虚拟网络体系架构的角度分析了虚拟化技术在云计算数据中心网络中的应用;最后预测了云计算数据中心网络未来的发展趋势.

Under the influence of the development of cloud computing, the data center network is going through tremendous changes, which are reflected not only in the improvement of network size, bandwidth, abundant links, scalability, agility and the cutting down of the cost, but also in other aspects, such as the support for the VMotion dynamically, the network virtualization etc. On the basis of the main challenges of data center network for cloud computing, the paper firstly describes the network architecture of data center for cloud computing in two different aspects, which regards switches and servers as the forwarding center respectively. Next, from the perspective of the flexible deployment of network resources, the paper deeply analyzes the related proposals and key technologies concerning the VMotion dynamically in data center for cloud computing. Further, in order to summarize the application of the network virtualization in data center for cloud computing in detail, the paper mainly analyzes a variety of designs for the virtual network architecture, which includes two different types, the scalability type and the performance guaranteed type. Finally, taking the rapid development of advanced technologies into account, the paper puts forward several points of future prediction in terms of the development of data center network for cloud computing.