Evaluation of power rating of core network equipment in practical deployments

2012 17th European Conference on Networks and Optical Communications

Parker

Lambert

et al. 2012

Self Cite

Abstract-Several approaches exist to categorize power savings in Information and Communication Technologies (ICT) networks. In this paper we survey current power saving techniques in backbone telecommunication networks, based on an analytical power model. This categorization allows for a more intuitive understanding of the power saving potential of different approaches, and shows that in order to achieve large savings (i.e. more than 10 times reduction of the current power consumption), effort will need to be concentrated on those techniques that reduce either the traffic volume or the equipment power rating. The survey in this paper also provides the basis for a more quantitative evaluation of future power saving techniques.

Section: A Reference Power Valuesmentioning

confidence: 99%

Section: Power Ratingmentioning

confidence: 99%

Using an analytical power model to survey power saving approaches in backbone networks

2012 17th European Conference on Networks and Optical Communications

Parker

Lambert

et al. 2012

Self Cite

“…We assume the power-per-port value fixed and independent of the load, as the power consumption of present-day IP routers when idle and under full load are very similar [10], [11]. This also implies that the influence on the power consumption of buffering and table look-up associated with packet switching is negligible.…”

Section: B Power Consumption Modelmentioning

confidence: 99%

“…All values are taken from [5], with the exception of the 40G coherent transponder value which is based on [10].…”

Section: B Power Consumption Modelmentioning

confidence: 99%

Power consumption evaluation of circuit-switched versus packet-switched optical backbone networks

2013 IEEE Online Conference on Green Communications (OnlineGreenComm)

Lannoo

Colle

et al. 2013

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Abstract-While telecommunication networks have historically been dominated by a circuit-switched paradigm, the last decades have seen a clear trend towards packet-switched networks. In this paper we evaluate how both paradigms perform in optical backbone networks from a power consumption point of view, and whether the general agreement of circuit switching being more power-efficient holds. We consider artificially generated topologies of various sizes, mesh degrees and-not yet previously explored in this context-transport linerates. We cross-validate our findings with a number of realistic topologies.Our results show that, as a generalization, packet switching can become preferable when the traffic demands are lower than half the transport linerate. We find that an increase in the network node count does not consistently increase the energy savings of circuit switching over packet switching, but is heavily influenced by the mesh degree and (to a minor extent) by the average link length.

“…We will use them as a basis for the weighting factors (also listed in Table II) in the analytical model, as we will explain in the next subsection. The power ratings are distilled from [16] and [20], and are homogenized across three properties. First, they are derived from typical power consumption values (as opposed to vendor rated power, which is typically higher and used for provisioning the power distribution infrastructure).…”

Section: A Baseline Scenario and Reference Power Rating Valuesmentioning

confidence: 99%

A Quantitative Survey of the Power Saving Potential in IP-Over-WDM Backbone Networks

IEEE Commun. Surv. Tutorials

Lannoo

Colle

et al. 2016

Self Cite

Abstract-The power consumption in Information and Communication Technologies (ICT) networks is growing year by year; this growth presents challenges from a technical, economic and environmental point of view. This has lead to a great number of research publications on 'green' telecommunication networks. In response, a number of survey works have appeared as well. However, with respect to backbone networks most survey works (a) do not allow for an easy cross-validation of the savings reported in the various works, (b) nor do they provide a clear overview of the individual and combined power saving potential. Therefore, in this work we survey the reported saving potential in IP-over-WDM backbone telecommunication networks across the existing body of research in that area. We do this by mapping more than 10 different approaches to a concise analytical model, which allows us to estimate the combined power reduction potential. Our estimates indicate that the power reduction potential of the once-only approaches is 2.3× in a Moderate Effort scenario and 31× in a Best Effort scenario. Factoring in the historic and projected yearly efficiency improvements ("Moore's law") roughly doubles both values on a 10-year horizon. The large difference between the outcome of the Moderate Effort and Best Effort scenario is explained by the disparity and lack of clarity of the reported saving results, and by our (partly) subjective assessment of the feasibility of the proposed approaches. The Moderate Effort scenario will not be sufficient to counter the projected traffic growth, although the Best Effort scenario indicates that sufficient potential is likely available. The largest isolated power reduction potential is available in improving the power associated with cooling and power provisioning, and applying sleep modes to overdimensioned equipment.