Extending OpenFlow with flexible time-triggered real-time communication services

2017 22nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA) Pub Date : 2017-09-01 DOI:10.1109/ETFA.2017.8247595

Luís Silva, Pedro Gonçalves, R. Marau, P. Pedreiras, L. Almeida

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引用次数: 15

Abstract

Emerging concepts such as Smart Production, Industrial Internet of Things and Industry 4.0 bring a radically new set of requirements to the way industrial systems are engineered. In what concerns the communication infrastructure, support to dynamic environments, interoperability and heterogeneity, combined with a significant increase in the number of devices, are just a few of the challenges that must be faced. Software-defined networking is a disruptive networking paradigm that emerged on campus networks but was soon considered for use at industrial level. This paper presents a set of extensions to the Software Defined Networking (SDN) OpenFlow protocol that complement its functionality, namely supporting real-time reservations, which is one of its more notorious limitations when considering industrial scenarios. We explain how the extensions are implemented in the OpenFlow side and enforced using a Flexible Time-Triggered Ethernet network. The extensions are validated experimentally, showing that the platform supports dynamically reconfigurable heterogeneous traffic classes.

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扩展OpenFlow，提供灵活的时间触发实时通信服务

智能生产、工业物联网和工业4.0等新兴概念为工业系统的设计方式带来了一系列全新的要求。在通信基础设施方面，对动态环境的支持、互操作性和异构性，以及设备数量的显著增加，只是必须面对的一些挑战。软件定义网络是一种颠覆性的网络模式，出现在校园网中，但很快就被考虑用于工业层面。本文介绍了软件定义网络(SDN) OpenFlow协议的一组扩展，以补充其功能，即支持实时预订，这是考虑工业场景时最臭名昭著的限制之一。我们解释了如何在OpenFlow端实现扩展，并使用灵活的时间触发以太网网络强制执行。实验验证了该扩展，表明该平台支持动态可重构的异构流量类。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2017 22nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA)

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