FHT: A Novel Approach for Filtering High-Availability Seamless Redundancy (HSR) Traffic

Tien, Nguyen Xuan; Rhee, Jong Myung

doi:10.3390/en8076249

Cited by 11 publications

(5 citation statements)

References 5 publications

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“…Traffic filtering-based techniques reduce redundant unicast traffic by solving some or all of the HSR issues mentioned in Section 1. There are several traffic filtering techniques, including quick removing (QR) [14], port locking (PL) [15], and filtering HSR traffic (FHT) [16].…”

Section: Traffic Reduction Techniques 21 Traffic Filtering-based Tementioning

confidence: 99%

Techniques for Reducing Redundant Unicast Traffic in HSR Networks

Rhee¹,

Tien²

2018

Broadband Communications Networks - Recent Advances and Lessons From Practice

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High-availability seamless redundancy (HSR) is a seamless redundancy protocol for Ethernet networks. HSR provides seamless communication with fault tolerance based on the duplication of every unicast frame sent in a ring topology. HSR is very useful for mission-and time-critical systems such as substation automation systems (SASs). However, the main drawback of HSR is to generate excessively redundant network traffic in HSR networks. This drawback would unnecessarily waste network bandwidth and hence could degrade network performance in HSR networks. Several traffic reduction techniques for HSR networks have been proposed to improve the network performance in the networks. These techniques can be classified into two main groups: traffic filteringbased and dual paths-based techniques. In this chapter, we provide a description and comparison of these HSR traffic reduction techniques. This chapter describes these traffic reduction techniques and compares their network performance. The operations, advantages, and disadvantages of these techniques are investigated and summarized.

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Section: Traffic Reduction Techniques 21 Traffic Filtering-based Tementioning

confidence: 99%

Techniques for Reducing Redundant Unicast Traffic in HSR Networks

Rhee¹,

Tien²

2018

Broadband Communications Networks - Recent Advances and Lessons From Practice

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“…FHT Concepts FHT [16] is an HSR traffic reduction technique that solves all HSR issues mentioned in Section 3. The FHT approach prunes unicast traffic for both unused DANH and QuadBox rings, and removes duplicated and circulated traffic from all active rings in HSR networks.…”

Section: Filtering Hsr Traffic (Fht)mentioning

confidence: 99%

A Comparison of Techniques for Reducing Unicast Traffic in HSR Networks

2015

Self Cite

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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.

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“…This approach still suffers from excessive traffic in the learning process. This idea was promoted in [15] by the HSR frame modification to provide a header for filtering traffic. In this method, QuadBox is equipped with two MAC address tables that assist the network in eliminating the circulation of the packet in non-destination HSR and QuadBox rings.…”

Section: Introductionmentioning

confidence: 99%

Towards Latency Bypass and Scalability Maintain in Digital Substation Communication Domain with IEC 62439-3 Based Network Architecture

Tightiz

Yoo

2022

Sensors

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Parallel redundancy protocol (PRP) and high-availability redundancy protocol (HSR) are widely adopted protocols based on IEC 61850 standard to support zero recovery communication networks for time-critical and reliable interactions in power system substations. However, hiring these protocols comes with technical and economic constraints that impact the size of the substation network arrangement. Therefore, we will undertake a theoretical analysis of HSR, PRP, and their combinations to reach a maximum number of nodes in different substation communication architectures regarding IEC 61850 standard message time constraint requirements and IEC 62439-3 standard regulations. We will validate our findings through a simulation in the OPNET Modeler environment. In addition, we considered bandwidth efficiency by prohibiting the extra circulation of packets in the redundancy Box (RedBox) and QuadBox implementation as interfaces for HSR and PRP connection and HSR rings interconnection, respectively, which represent the main hindrance in utilizing the combination of these protocols.

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FHT: A Novel Approach for Filtering High-Availability Seamless Redundancy (HSR) Traffic

Cited by 11 publications

References 5 publications

Techniques for Reducing Redundant Unicast Traffic in HSR Networks

Techniques for Reducing Redundant Unicast Traffic in HSR Networks

A Comparison of Techniques for Reducing Unicast Traffic in HSR Networks

Towards Latency Bypass and Scalability Maintain in Digital Substation Communication Domain with IEC 62439-3 Based Network Architecture

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