A Closed-Form Model for the IEEE 802.3az Network and Power Performance

Bolla, Raffaele; Bruschi, Roberto; Carrega, Alessandro; Davoli, Franco; Lago, Paolo

doi:10.1109/jsac.2014.140103

Cited by 21 publications

(26 citation statements)

References 17 publications

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“…However, the buffer size and the coalescing timeout setting strongly affect the trade-off in EEE performance. Since then, several works addressed modeling and performance analysis of EEE based on various traffic parameters and with and without consideration to packet coalescing [133][134][135][136][137][138][139]. In [133] authors provide an evaluation of static and dynamic coalescing for EEE in which buffer size and timeout are fixed (static) and adapted to traffic pattern (dynamic).…”

Section: ) Node Level A) Hardware Optimisationmentioning

confidence: 99%

“…However, this model is valid only for unidirectional traffic and specifically designed for the case of 10 Gbit/s links. Also, the work in [139] provides a model that can be used for three available EEE links: 100BASE-TX, 1000BASE-T and 10GBASE-T. By analysing energy consumption and various network performance indexes in closed form, i.e., without upper bound and lower bound approximations, makes the model suitable to be adopted in optimisation frameworks. This model can be used and useful for dimensioning interfaces during the design phase of a datacenter.…”

Section: ) Node Level A) Hardware Optimisationmentioning

confidence: 99%

“…Figure 15 shows the transitions between modes as defined in EEE, as well as, it indicates a qualitative indication of the energy consumption ( ) for the different periods. However, the sleep and wake-up periods are intensely greater for small frames and higher speed [139]. permits faster wake-up time and maintains alignment between Transmitter (TX) and Receiver (RX).…”

Section: ) Node Level A) Hardware Optimisationmentioning

confidence: 99%

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Energy saving in carrier-grade networks: A survey

Mâaloul

Fourati

Cousin

2018

Computer Standards & Interfaces

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Summary-Energy consumption of large-scale networks has become a primary concern in a society increasingly dependent on information technology. Novel solutions that contribute to achieving energy savings in wired networks have been proposed to mitigate ongoing and alarming climate change and global warming. A detailed survey of relevant power-saving approaches in wired networks is presented here. We give a special focus on carrier-grade networks. At first we perform a comprehensive study of communication infrastructures regarding energy saving. Then, we highlight key issues to enable green networks, ranging from network design to network operation. After that, we present the major contributors to power consumption in wireline networks. Afterwards, we survey, classify, and compare the main energyaware methods and mechanisms that are the most appropriate for improving the energy efficiency of carrier-grade networks.

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Section: ) Node Level A) Hardware Optimisationmentioning

confidence: 99%

Section: ) Node Level A) Hardware Optimisationmentioning

confidence: 99%

Section: ) Node Level A) Hardware Optimisationmentioning

confidence: 99%

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Energy saving in carrier-grade networks: A survey

Mâaloul

Fourati

Cousin

2018

Computer Standards & Interfaces

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“…This mode, known as packet coalescing or burst transmission, avoids unnecessary transitions between the normal and low power modes, greatly improving the energy savings at the cost of additional delays. There exist analytic models for the power savings of burst transmission for both Poisson traffic [11] and for its delay [24], [25]. A general model for general arrival patterns for both frame and burst transmission covering both power usage and delay can be found in [13].…”

Section: Related Workmentioning

confidence: 99%

Optimum Traffic Allocation in Bundled Energy-Efficient Ethernet Links

Rodríguez‐Pérez

Fernández‐Veiga

Herrería-Alonso

et al. 2018

IEEE Systems Journal

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The energy demands of Ethernet links have been an active focus of research in the recent years. This work has enabled a new generation of energy-efficient Ethernet (EEE) interfaces able to adapt their power consumption to the actual traffic demands, thus yielding significant energy savings. With the energy consumption of single network connections being a solved problem, in this paper, we focus on the energy demands of link aggregates that are commonly used to increase the capacity of a network connection. We build on known energy models of single EEE links to derive the energy demands of the whole aggregate as a function on how the traffic load is spread among its powered links. We then provide a practical method to share the load that minimizes overall energy consumption with controlled packet delay and prove that it is valid for a wide range of EEE links. Finally, we validate our method with both synthetic and real traffic traces captured in Internet backbones. Index Terms-Energy efficiency, link aggregation, network interfaces, optimization methods.1932-8184 © 2015 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.See http://www.ieee.org/publications_standards/publications/rights/index.html for more information. Miguel Rodríguez-Pérez (M'09) received the M.Sc. and Ph.D. degrees in telecommunication engineering from the University of Vigo, Pontevedra, Spain, in 2001 and 2006, respectively. He is currently an Associate Professor with the Department of Telematics Engineering, University of Vigo, where he is also an affiliated member of the colocated Networking Laboratory. His research interests include congestion control and traffic engineering, with a strong focus on energy efficiency. Manuel Fernández-Veiga (SM'12) received the M.Sc. and Ph.D. degrees in telecommunication engineering from the University of Vigo, Pontevedra, Spain, in 1992 and 2001, respectively.He is currently an Associate Professor with the University of Vigo, where he is also an affiliated member of the colocated Networking Laboratory. His research interests include communication theory, performance analysis of computer networks, and wireless networking. He has authored over 50 papers in international conferences and journals.Sergio Herrería-Alonso received the M.Sc. and Ph.D. degrees in telecommunication engineering from the University of Vigo, Pontevedra, Spain, in 2001 and 2006, respectively. He is currently an Associate Professor with the Department of Telematics Engineering, University of Vigo, where he is also an affiliated member of the colocated Networking Laboratory. He has authored or coauthored over 30 papers in peer-reviewed international conferences and journals. His research interests include quality of service in the Internet and energy-efficient networking.

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“…The most significant aspects of EEE are presented in [17], where the authors, besides describing the steps that led to the IEEE 802.3az standard publication, focus in particular on the economic benefits expected from the adoption of EEE. In [18], a complete and exhaustive theoretical model is proposed to describe both power consumption and performance of networks that adopt EEE, assuming that the incoming traffic is that typical of the Internet. In [19], the authors introduce a theoretical model to calculate the time an Ethernet link spends in each EEE state.…”

Section: Related Work and Motivationmentioning

confidence: 99%

Strategies and Services for Energy Efficiency in Real-Time Ethernet Networks

Tramarin

Vitturi

2015

IEEE Trans. Ind. Inf.

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The IEEE 802.3az amendment to the Ethernet standard, referred to as energy-efficient Ethernet (EEE), encompasses the new low power Idle operational mode that allows to strongly decrease the energy consumption of inactive links. The introduction of EEE in real-time industrial communications represents an interesting topic currently addressed by the scientific community, as well as by some standardization bodies. The outcomes of these activities are promising, since effective EEE strategies can be devised, and are able to cope with the very tight timing requirements of industrial communication. Unfortunately, the proposed analyses do not address implementation issues that, conversely, represent a crucial aspect in this scenario. Hence, in this paper, we specifically focus on practical issues concerned with the adoption of EEE strategies by real-time Ethernet (RTE) networks. At first, we address the use of commercially available network components and describe a measurement setup that can be adopted to achieve the adequate characterization of such components. Furthermore, we show that, in an RTE perspective, link activations/deactivations should be independently managed by suitably designed EEE strategies at the application level. Consequently, we defined a set of network services that have to be made available in the device drivers. Hence, we consider a generic RTE network and discuss methods for the practical implementation of those EEE strategies. A performance assessment carried out via theoretical models as well as numerical simulations shows that EEE strategies can be effectively implemented with considerable power savings at the expense of only minimal performance degradation.

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A Closed-Form Model for the IEEE 802.3az Network and Power Performance

Cited by 21 publications

References 17 publications

Energy saving in carrier-grade networks: A survey

Energy saving in carrier-grade networks: A survey

Optimum Traffic Allocation in Bundled Energy-Efficient Ethernet Links

Strategies and Services for Energy Efficiency in Real-Time Ethernet Networks

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