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A Comparison of Techniques for Reducing Unicast Traffic in HSR Networks

Author

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  • Nguyen Xuan Tien

    (Department of Information and Communications Engineering, Myongji University, Yongin, Gyeonggi 449-728, Korea)

  • Saad Allawi Nsaif

    (Department of Information and Communications Engineering, Myongji University, Yongin, Gyeonggi 449-728, Korea)

  • Jong Myung Rhee

    (Department of Information and Communications Engineering, Myongji University, Yongin, Gyeonggi 449-728, Korea)

Abstract

This paper investigates several existing techniques for reducing high-availability seamless redundancy (HSR) unicast traffic in HSR networks for substation automation systems (SAS). HSR is a redundancy protocol for Ethernet networks that provides duplicate frames for separate physical paths with zero recovery time. This feature of HSR makes it very suited for real-time and mission-critical applications such as SAS systems. HSR is one of the redundancy protocols selected for SAS systems. However, the standard HSR protocol generates too much unnecessary redundant unicast traffic in connected-ring networks. This drawback degrades network performance and may cause congestion and delay. Several techniques have been proposed to reduce the redundant unicast traffic, resulting in the improvement of network performance in HSR networks. These HSR traffic reduction techniques are broadly classified into two categories based on their traffic reduction manner, including traffic filtering-based techniques and predefined path-based techniques. In this paper, we provide an overview and comparison of these HSR traffic reduction techniques found in the literature. The concepts, operational principles, network performance, advantages, and disadvantages of these techniques are investigated, summarized. We also provide a comparison of the traffic performance of these HSR traffic reduction techniques.

Suggested Citation

  • Nguyen Xuan Tien & Saad Allawi Nsaif & Jong Myung Rhee, 2015. "A Comparison of Techniques for Reducing Unicast Traffic in HSR Networks," Energies, MDPI, vol. 8(10), pages 1-32, October.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:10:p:12029-12060:d:57651
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    References listed on IDEAS

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    1. Saad Nsaif & Jong-Myung Rhee, 2014. "DVP: A Novel High-Availability Seamless Redundancy (HSR) Protocol Traffic-Reduction Algorithm for a Substation Automation System Network," Energies, MDPI, vol. 7(3), pages 1-19, March.
    2. Nguyen Xuan Tien & Jong Myung Rhee, 2015. "FHT: A Novel Approach for Filtering High-Availability Seamless Redundancy (HSR) Traffic," Energies, MDPI, vol. 8(7), pages 1-26, June.
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