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An Evaluation of SDN Based Network Virtualization Techniques.

机译：基于SDN的网络虚拟化技术评估。

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摘要

With the software-defined networking trend growing, several network virtualization controllers have been developed in recent years. These controllers, also called network hypervisors, attempt to manage physical SDN based networks so that multiple tenants can safely share the same forwarding plane hardware without risk of being affected by or affecting other tenants. However, many areas remain unexplored by current network hypervisor implementations. This thesis presents and evaluates some of the features offered by network hypervisors, such as full header space availability, isolation, and transparent traffic forwarding capabilities for tenants. Flow setup time and throughput are also measured and compared among different network hypervisors. Three different network hypervisors are evaluated: FlowVisor, VeRTIGO and OpenVirteX. These virtualization tools are assessed with experiments conducted on three different testbeds: an emulated Mininet scenario, a physical single-switch testbed, and also a remote GENI testbed. The results indicate that network hypervisors bring SDN flexibility to network virtualization, making it easier for network administrators to define with precision how the network is sliced and divided among tenants. This increased flexibility, however, may come with the cost of decreased performance, and also brings additional risks of interoperability due to a lack of standardization of virtualization methods.
机译：随着软件定义网络趋势的发展，近年来已经开发了几种网络虚拟化控制器。这些控制器（也称为网络管理程序）尝试管理基于物理SDN的网络，以便多个租户可以安全地共享同一转发平面硬件，而不会受到其他租户的影响或影响。但是，当前的网络管理程序实现尚未探索许多领域。本文提出并评估了网络管理程序提供的一些功能，例如完整的标头空间可用性，隔离性以及针对租户的透明流量转发功能。还测量了流量建立时间和吞吐量，并在不同的网络管理程序之间进行了比较。评估了三种不同的网络管理程序：FlowVisor，VeRTIGO和OpenVirteX。这些虚拟化工具是通过在三个不同的测试平台上进行的实验进行评估的：模拟的Mininet方案，物理单交换机测试平台以及远程GENI测试平台。结果表明，网络管理程序为网络虚拟化带来了SDN灵活性，使网络管理员可以更轻松地精确定义如何在租户之间划分和划分网络。但是，这种增加的灵活性可能伴随性能下降的代价，并且由于缺乏虚拟化方法的标准化，还带来了互操作性的其他风险。

著录项

  • 作者

    Stall Rechia, Felipe.;

  • 作者单位

    Arizona State University.;

  • 授予单位 Arizona State University.;
  • 学科 Computer engineering.;Computer science.
  • 学位 M.S.
  • 年度 2016
  • 页码 106 p.
  • 总页数 106
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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