如何用可编程数据平面硬件测量光速?

2019 ACM/IEEE Symposium on Architectures for Networking and Communications Systems (ANCS) Pub Date : 2019-09-01 DOI:10.1109/ANCS.2019.8901871

Ralf Kundel, Fridolin Siegmund, B. Koldehofe

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引用次数: 3

摘要

在工业物联网、TSN和车载网络等实时应用的推动下，网络及其要素的延迟和吞吐量优化变得越来越重要。通过这个演示，我们将展示如何使用商用P4硬件以纳秒级的精度识别网络组件的延迟。我们展示了在光纤电缆中测量到的5ns/m的传播速度。除此之外，我们的方法通过将许多低成本负载生成器聚合到一个灵活的基于软件的负载生成来扩展到$100Gbit/s$链接速度。

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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How to measure the speed of light with programmable data plane hardware?

Driven by real-time applications such as IIoT, TSN and vehicular networks, the optimization of networks and its elements regarding latency and throughput becomes more and more important. With this demo we show how latencies of network components can be identified within nanosecond accuracy by use of commodity P4 hardware. We show a measured propagation speed of $5ns/m$ in fiber optical cables. Besides that, our approach scales up to $100Gbit/s$ link speed by the aggregation of many low-cost load generators to a flexible software-based load generation.

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来源期刊

2019 ACM/IEEE Symposium on Architectures for Networking and Communications Systems (ANCS)

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