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Energies 2016, 9(1), 36; doi:10.3390/en9010036

Developing a New HSR Switching Node (SwitchBox) for Improving Traffic Performance in HSR Networks

Department of Information and Communications Engineering, Myongji University, 116 Myongji-ro, Yongin-si, Gyeonggi-do 449-728, Korea
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Author to whom correspondence should be addressed.
Academic Editor: Neville Watson
Received: 8 December 2015 / Revised: 5 January 2016 / Accepted: 5 January 2016 / Published: 8 January 2016
(This article belongs to the Collection Smart Grid)

Abstract

High availability is crucial for industrial Ethernet networks as well as Ethernet-based control systems such as automation networks and substation automation systems (SAS). Since standard Ethernet does not support fault tolerance capability, the high availability of Ethernet networks can be increased by using redundancy protocols. Various redundancy protocols for Ethernet networks have been developed and standardized, such as rapid spanning tree protocol (RSTP), media redundancy protocol (MRP), parallel redundancy protocol (PRP), high-availability seamless redundancy (HSR) and others. RSTP and MRP have switchover delay drawbacks. PRP provides zero recovery time, but requires a duplicate network infrastructure. HSR operation is similar to PRP, but HSR uses a single network. However, the standard HSR protocol is mainly applied to ring-based topologies and generates excessively unnecessary redundant traffic in the network. In this paper, we develop a new switching node for the HSR protocol, called SwitchBox, which is used in HSR networks in order to support any network topology and significantly reduce redundant network traffic, including unicast, multicast and broadcast traffic, compared with standard HSR. By using the SwitchBox, HSR not only provides seamless communications with zero switchover time in case of failure, but it is also easily applied to any network topology and significantly reduces unnecessary redundant traffic in HSR networks. View Full-Text
Keywords: high-availability seamless redundancy (HSR); HSR SwitchBox; fault-tolerant Ethernet; industrial Ethernet; substation automation systems high-availability seamless redundancy (HSR); HSR SwitchBox; fault-tolerant Ethernet; industrial Ethernet; substation automation systems
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Tien, N.X.; Rhee, J.M. Developing a New HSR Switching Node (SwitchBox) for Improving Traffic Performance in HSR Networks. Energies 2016, 9, 36.

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