使用SDN的实时系统的端到端网络延迟保证

Rakesh Kumar, M. Hasan, Smruti Padhy, Konstantin Evchenko, Lavanya Piramanayagam, Sibin Mohan, R. Bobba
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引用次数: 75

摘要

实时系统(RTS)需要端到端延迟保证网络数据包的传输。在本文中,我们提出了一个框架,通过利用软件定义网络(SDN)的功能(包括网络的全局可见性和管理)来减少这种实时(RT)网络流的管理和集成开销。给定必须满足硬实时需求的流规范,我们的框架通过网络合成路径。为了保证这些流同时满足带宽和端到端时间要求,我们的框架使用启发式算法解决了一个多约束优化问题。我们在硬件开关上进行了详尽的仿真和实验,以证明我们的技术和方法的可行性。作为这项工作的结果,sdn成为“延迟感知”,因此可以用于安全关键型和其他延迟敏感型应用程序。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
End-to-End Network Delay Guarantees for Real-Time Systems Using SDN
Real-time systems (RTS) require end-to-end delay guarantees for the delivery of network packets. In this paper, we propose a framework to reduce the management and integration overheads for such real-time (RT) network flows by leveraging the capabilities of software-defined networking (SDN) – capabilities that include global visibility and management of the network. Given the specifications of flows that must meet hard real-time requirements, our framework synthesizes paths through the network. To guarantee that these flows meet both, their bandwidth and end-to-end timing requirements, our framework solves a multi-constraint optimization problem using a heuristic algorithm. We use exhaustive emulations and experiments on hardware switches to demonstrate our techniques and feasibility of our approach. As a result of this work, SDNs become “delay-aware” and thus can be adapted for use in safety-critical and other delay-sensitive applications.
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