A Switch Design for Real-Time Industrial Networks

TitleA Switch Design for Real-Time Industrial Networks
Publication TypeConference Paper
Year of Publication2008
AuthorsWang, Q., S. Gopalakrishnan, X. Liu, and L. Sha
Conference NameReal-Time and Embedded Technology and Applications Symposium, 2008. RTAS '08. IEEE
Pagination367 -376
Date Publishedapr.
Keywordsbest-effort Internet traffic, crossbar switching fabric, flow aggregation, hierarchical scheduling, high-speed WAN switches, Internet, iSLIP crossbar switch scheduler, next generation networking, real-time industrial networks, real-time virtual machine tasks, scheduling, telecommunication switching, telecommunication traffic

The convergence of computers and the physical world is the theme for next generation networking research. This trend calls for real-time network infrastructure, which requires a high-speed real-time WAN to serve as its backbone. However, commercially available high-speed WAN switches (routers) are designed for best-effort Internet traffic. A real-time switch design for the aforementioned networks is missing. We propose a real-time switch design using a crossbar switching fabric. The proposed switch can be implemented by making minimal modification, or even simplification, to the widely implemented iSLIP crossbar switch scheduler. Our real-time switch serves periodic and aperiodic traffic with real-time virtual machine tasks, which simplifies analysis, provides isolation, and facilitates future hierarchical scheduling and flow aggregation. Taking advantage of the fact that most industrial real-time network flows rarely change, our switch is better adapted to providing high bandwidths and low latencies.


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