A synthesizable ethernet switch with enhanced real-time features

Santos, Ricardo J.; Marau, Ricardo; Vieira, A.; Pedreiras, Paulo; Oliveira, Arnaldo S. R.; Almeida, Luís

doi:10.1109/iecon.2009.5415405

Cited by 18 publications

(8 citation statements)

References 5 publications

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“…A prototype real-time Ethernet switch is proposed in [14], the switch provides real-time communication based on a time-triggered schedule. The switch supports frame transmission with a network-coherent time line and online administration control, and it enforces isolation of three different traffic classes so as to prevent any interference from non-time-sensitive traffic.…”

Section: Researching On Traffic Scheduling In Tsnmentioning

confidence: 99%

Insight into the IEEE 802.1 Qcr Asynchronous Traffic Shaping in Time Sensitive Network

Zhou¹,

Berger²,

Ruepp³

et al. 2019

Adv. sci. technol. eng. syst. j.

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TSN is an attractive solution for latency-critical frame transmission built upon IEEE 802 architecture. Traffic scheduling and shaping in TSN aim to achieve bounded low latency and zero congestion loss. However, the most widespread solution (i.e. Time-Aware Shaper) requires a networkwide precision clock reference and only targets on cyclical traffic flows. This paper focuses on the performance evaluation of the ATS, which applies shaping algorithm to any flows and requires no clock reference. Simulations are proposed for evaluation and comparison. Metrics including end-to-end delay, buffer usage and frame loss rate are collected to assess the shaping performance. Results show that ATS achieves effective traffic shaping and switching without synchronous mechanisms, while there is an evident trade-off for using these specific algorithms.

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Section: Researching On Traffic Scheduling In Tsnmentioning

confidence: 99%

Insight into the IEEE 802.1 Qcr Asynchronous Traffic Shaping in Time Sensitive Network

Zhou¹,

Berger²,

Ruepp³

et al. 2019

Adv. sci. technol. eng. syst. j.

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show abstract

“…Por ejemplo, en [12] se implementan alternativas con sistemas de comunicaciones cableados e inalámbricos, ubicando los dispositivos en diferentes segmentos para balancear el retardo de los paquetes y la carga de tráfico de la red, con el fin de mejorar las condiciones de respuesta de los sistemas propuestos [54], [34]. También, se han estudiado la implementación de políticas en la prioridad de tráfico [55], [56] y se han realizado desarrollos con hardware especializado [57], [58], a fin de obtener mejoras en las condiciones de tráfico, posibilitando cambiar los tiempos de operación y respuesta de los sistemas analizados [59]. En otro estudio [60], se propone un esquema para mejorar las condiciones de la red basado en direccionamiento, optimización en la transferencia de paquetes y sincronización programada.…”

Section: Características Relevantes De Un Canal De Comunicacionesunclassified

Caracterización de canales de comunicación por tráfico y arquitectura de la red: una revisión<br />Characterization of communication channels in terms of traffic and network architecture: a review

Serna-Guarín¹,

Delgado-Trejos²

2014

Iteckne

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“…Since IEEE 802.1Qcc in TSN is not yet available in practice, we used another Ethernet-based protocol, namely Hard Real-Time Ethernet Switch (HaRTES) [11], that uses a centralized AC, to be compared against the distributed AC of AVB, focusing on the architectural differences of the respective AC processes. HaRTES is an academic implementation on switched Ethernet of the Flexible Time-Triggered (FTT) [12] paradigm that was devised to provide native real-time and operational flexibility.…”

Section: Introductionmentioning

confidence: 99%

Comparing Admission Control Architectures for Real-Time Ethernet

et al. 2020

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Industry 4.0 and Autonomous Driving are emerging resource-intensive distributed application domains that deal with open and evolving environments. These systems are subject to stringent resource, timing, and other non-functional constraints, as well as frequent reconfiguration. Thus, real-time behavior must not preclude operational flexibility. This combination is motivating ongoing efforts within the Time Sensitive Networking (TSN) standardization committee to define admission control mechanisms for Ethernet. Existing mechanisms in TSN, like those of AVB, its predecessor, follow a distributed architecture that favors scalability. Conversely, the new mechanisms envisaged for TSN (IEEE 802.1Qcc) follow a (partially) centralized architecture, favoring short reconfiguration latency. This paper shows the first quantitative comparison between distributed and centralized admission control architectures concerning reconfiguration latency. Here, we compare AVB against a dynamic real-time reconfigurable Ethernet technology with centralized management, namely HaRTES. Our experiments show a significantly lower latency using the centralized architecture. We also observe the dependence of the distributed architecture in the end nodes' performance and the benefit of having a protected channel for the admission control transactions. INDEX TERMS Ethernet, TSN, AVB, HaRTES, real-time communication, dynamic reconfiguration, admission control protocol.

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A synthesizable ethernet switch with enhanced real-time features

Cited by 18 publications

References 5 publications

Insight into the IEEE 802.1 Qcr Asynchronous Traffic Shaping in Time Sensitive Network

Insight into the IEEE 802.1 Qcr Asynchronous Traffic Shaping in Time Sensitive Network

Caracterización de canales de comunicación por tráfico y arquitectura de la red: una revisión<br />Characterization of communication channels in terms of traffic and network architecture: a review

Comparing Admission Control Architectures for Real-Time Ethernet

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