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Elastic Edge-Overlay Methods Using OpenFlow for Cloud Networks

机译：使用OpenFlow for云网络的​​弹性边缘覆盖方法

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摘要

The virtualization of cloud network requires flexible and effective techniques to accommodate the rapid changes in the network configurations and updates. OpenFlow protocol has attracted attentions for cloud networks since it facilitates managing and sharing the network resources, and it can be utilized to create an overlay abstraction on top of the network infrastructure for the flow setup in the cloud. However, the traditional reactive flow setup of OpenFlow introduces higher flow latency and overhead on the network controller. This paper discusses the issues of the reactive flow setup and presents two optimized overlay network virtualization methods that leverage OpenFlow to control and forward the tenants' traffic. The proposed methods enable tenants to use their own MAC/IP addresses in the cloud. We have implemented and evaluated the proposed overlay methods, and the experimental results show that our methods have less flow latency than the traditional reactive approach, and higher performance than the popular overlay tunneling protocols such as VXLAN, STT, and NVGRE.
机译：云网络的虚拟化需要灵活且有效的技术来适应网络配置和更新的快速变化。 OpenFlow协议引起了云网络的关注，因为它有助于管理和共享网络资源，并且它可以用于在网络基础架构顶部创建覆盖抽象，以便在云中的流量设置。然而，OpenFlow的传统反应流设置在网络控制器上引入了更高的流量延迟和开销。本文讨论了反应流设置的问题，并呈现了两个优化的叠加网络虚拟化方法，利用OpenFlow来控制和转发租户的流量。所提出的方法使租户能够在云中使用自己的MAC / IP地址。我们已经实施和评估了所提出的覆盖方法，实验结果表明，我们的方法比传统的反应方法更少的流动延迟，比流行覆盖隧道协议（如VXLAN，STT和NVGRE）的性能更高。

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