OpenFlow规则交互:定义和检测

R. Bifulco, Fabian Schneider
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引用次数: 16

摘要

软件定义网络(SDN)是一种很有前途的计算机网络体系结构,它允许开发复杂和革命性的应用程序,而不会破坏与传统网络的向后兼容性。控制平面的可编程性是SDN最有趣的特性之一,因为它在网络管理中提供了更高程度的灵活性:网络操作由专门编写的程序驱动,这些程序取代了传统网络中执行的防火墙、路由器和交换机配置的经典组合。OpenFlow标准提供了一个成功的SDN实现,它为网络定义了一个基于规则的编程模型。OpenFlow应用程序的开发过程目前是一个低级的、容易出错的编程练习,主要是在实现和验证阶段手工执行。在本文中,我们提供了OpenFlow规则交互的第一个正式分类到单个OpenFlow开关中,并提供了一种检测这种交互的算法,以帮助OpenFlow应用程序的开发。此外,我们还简要介绍了我们的原型的性能评估以及它如何在实际应用中使用。
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OpenFlow Rules Interactions: Definition and Detection
Software Defined Networking (SDN) is a promising architecture for computer networks that allows the development of complex and revolutionary applications, without breaking the backward compatibility with legacy networks. Programmability of the control-plane is one of the most interesting features of SDN, since it provides a higher degree of flexibility in network management: network operations are driven by ad-hoc written programs that substitute the classical combination of firewalls, routers and switches configurations performed in traditional networks. A successful SDN implementation is provided by the OpenFlow standard, that defines a rule-based programming model for the network. The development process of OpenFlow applications is currently a low-level, error prone programming exercise, mainly performed manually in both the implementation and verification phases. In this paper we provide a first formal classification of OpenFlow rules interactions into a single OpenFlow switch, and an algorithm to detect such interactions in order to aid the OpenFlow applications development. Moreover, we briefly present a performance evaluation of our prototype and how it has been used in a real-word application.
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