High speed 100GE adaptive link rate switching for energy consumption reduction

Abstract

Energy efficiency is becoming a critical issue in highspeed networks. 100 Gb/s Ethernet was standardized in 2010, and several papers have been published on power consumption reduction methods using Adaptive Link Rate (ALR) technology. ALR reduces power consumption by adapting link speed to traffic demand. However, rate switching time is a parameter that impacts the level of power reduction achievable with current ALR technologies. In this paper, we propose a new energy-efficient architecture for 100 Gb/s Ethernet. The rate switching time is reduced using coherent lightwave transmission technologies. We use simulations to evaluate how the proposed architecture impacts energy efficiency, switching time and network performance.Index Terms-Networks, energy efficiency, optical communications equipment, optical fiber communications.

Designing and building SDN testbeds for energy-aware traffic engineering services

“…Several technologies have been employed for this purpose, e.g. putting resources into low power consumption modes [23], adapting links' data transmission rates [22,30], and grouping and transferring packets in bursts [31]. Their utilisation, in general, results in lower overall energy use.…”

On Designing SDN Services for Energy-Aware Traffic Engineering

“…Several technologies have been employed generally resulting in overall lower energy use; e.g. putting resources into low power consumption modes [4], adapting links' data transmission rates [5,6], grouping and transfering packets in bursts [7]. Traffic engineering [8], initially conceived to enable quality of service and service differentiation, has been investigated as a network-wide approach to improve energy efficiency by, for instance, redirecting traffic and freeing network links that are henceforth put into low power consumption modes [9,10].…”