Abstract

In recent times, energy consumption in communication media has been increasing drastically. In the literature, energy-saving techniques that enable network devices to enter sleep state or limit the data rate have been proposed to reduce energy costs. In our earlier work, we proposed an energy-saving technique called burst-based adaptive link rate BBALR , the simulation of which assures increased energy savings. In this paper, we have emulated the hardware implementation of BBALR and compared its performance with the outputs of other prominent energy-saving policies based on dynamic link rate adaption. The energy savings are mapped from the measured sleep time and reference power values. We have used NetFPGA as the testbed, which is a research platform for building real-time network hardware prototypes.

Highlights

  • The Global e-Sustainability Initiative (GeSI) has been researching on cutting down the CO2 emissions caused by the ICT sector towards building a sustainable society

  • In this work, we have done the real-time implementations for burst-based adaptive link rate, burst transmission, and adaptive link rate policies

  • The hardware implementation of energy-saving policies for data transmission in wired networks has been performed in the NetFPGA platform

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Summary

Introduction

The Global e-Sustainability Initiative (GeSI) has been researching on cutting down the CO2 emissions caused by the ICT sector towards building a sustainable society. The scope for saving energy costs of the networking plane will exist as a research challenge at device and data center levels. Techniques like reengineering the hardware design and dynamic link rates were forecast as the future of green networks [5, 6]. Link rate adaption was proposed as an energysaving technique in NICs, switches, and routers in the last decade [5]. It is being successfully incorporated in emerging networking paradigms. We have emulated the real-time hardware implementation of the latest technique named burst-based adaptive link rate (BBALR). Three techniques that dynamically change the states of line cards are briefly summarized

Burst transmission techniques
Burst-full Policy
Timeout policy
Hybrid Policy
Adaptive link rates
Burst-based adaptive link rates
System model of BBALR
Energy consumption model
System design and hardware implementation
MB SRAM
Results and discussion
Conclusion

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