Composing SDN Controller Enhancements with Mozart

Composing SDN Controller Enhancements with Mozart
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使用 Mozart 编写 SDN 控制器增强功能

DOI:
10.1145/3357223.3362712
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发表时间:
2019
期刊:
SoCC ’19: ACM Symposium of Cloud Computing conference
影响因子:
--
通讯作者:
Benson, Theophilus A.
Benson, Theophilus A.
中科院分区:
--
文献类型:
--
作者:
Zhou, Zhenyu;Benson, Theophilus A.

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在过去的几年里,随着SDN增强功能的发展,我们经历了软件定义网络生态系统的巨大转变,例如,Statesman、ESPRES、P2P和Pyretic,以提供更好的可组合性、更好的TCAM利用率、一致的网络更新或无拥塞更新。这种有机演变的最终结果是SDN应用程序和数据平面之间的脱节。在本文中,我们首次系统地研究了SDN Enhancements和SDN应用之间的交互,我们发现SDN应用的性能会受到这些SDN Enhancements的显著影响:例如,我们观察到流量工程SDN应用的效率降低了24.8%。受这些见解的启发,我们提出了Mozart,一个重新设计的SDN控制器,其核心是减轻和减少这些SDN增强的影响。使用两个原型与七个SDN应用程序和两个SDN增强,我们证明了我们的抽象需要最小的变化,可以恢复SDN应用程序的性能。我们使用现代云网络的大规模模拟分析了Mozart的可扩展性和开销,并观察到它们可以忽略不计。
Over the last few years, we have experienced a massive transformation of the Software Defined Networking ecosystem with the development of SDNEnhancements, e.g., Statesman, ESPRES, Pane, and Pyretic, to provide better composability, better utilization of TCAM, consistent network updates, or congestion free updates. The end-result of this organic evolution is a disconnect between the SDN applications and the data-plane. A disconnect which can impact an SDN application's performance and efficacy.In this paper, we present the first systematic study of the interactions between SDNEnhancements and SDN applications -- we show that an SDN application's performance can be significantly impacted by these SDNEnhancements: for example, we observed that the efficiency of a traffic engineering SDN application was reduced by 24.8%. Motivated by these insights, we present, Mozart, a redesigned SDN controller centered around mitigating and reducing the impact of these SDNEnhancements. Using two prototypes interoperating with seven SDN applications and two SDNEnhancements, we demonstrate that our abstractions require minimal changes and can restore an SDN application's performance. We analyzed Mozart's scalability and overhead using large scale simulations of modern cloud networks and observed them to be negligible.
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