SecondNet:具有带宽保障的数据中心网络虚拟化架构

Chuanxiong Guo, Guohan Lu, Helen J. Wang, Shuang Yang, Chao Kong, Peng Sun, Wenfei Wu, Yongguang Zhang
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引用次数: 659

摘要

在本文中,我们提出虚拟数据中心(VDC)作为云中的多个租户的资源分配单位。vdc比物理数据中心更受欢迎,因为分配给vdc的资源可以随着租户需求的变化而快速调整。为了实现VDC抽象,我们设计了一个名为SecondNet的数据中心网络虚拟化体系结构。SecondNet通过在服务器管理程序中分布所有虚拟到物理的映射、路由和带宽保留状态来实现可伸缩性。它的基于端口交换的源路由(PSSR)进一步使SecondNet适用于使用商品服务器和交换机的任意网络拓扑。SecondNet引入了一种集中的VDC分配算法,用于保证带宽的虚拟到物理映射。仿真结果表明,该方法具有较高的网络利用率和较低的时间复杂度。我们的实现和实验表明,我们可以在各种网络拓扑上构建SecondNet,并且SecondNet如设计的那样提供带宽保证和弹性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
SecondNet: a data center network virtualization architecture with bandwidth guarantees
In this paper, we propose virtual data center (VDC) as the unit of resource allocation for multiple tenants in the cloud. VDCs are more desirable than physical data centers because the resources allocated to VDCs can be rapidly adjusted as tenants' needs change. To enable the VDC abstraction, we design a data center network virtualization architecture called SecondNet. SecondNet achieves scalability by distributing all the virtual-to-physical mapping, routing, and bandwidth reservation state in server hypervisors. Its port-switching based source routing (PSSR) further makes SecondNet applicable to arbitrary network topologies using commodity servers and switches. SecondNet introduces a centralized VDC allocation algorithm for bandwidth guaranteed virtual to physical mapping. Simulations demonstrate that our VDC allocation achieves high network utilization and low time complexity. Our implementation and experiments show that we can build SecondNet on top of various network topologies, and SecondNet provides bandwidth guarantee and elasticity, as designed.
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