Sleep-Mode/Traffic Grooming Versus Device Reliability Overview

The paper reviews the extent to which sleep mode (SM) green routing strategy in green networking impacts on the reliability as well as lifespan of optical networking devices. We first briefly review green routing, followed by describing a simple model of an end-to-end optical network's operational energy consumption. We later discuss operational energy efficiency versus network device reliability as well as lifespan. The discussion is based on results derived from various related works. Overall, we conclude that SM green routing approaches can achieve good device lifespan/reliability without consuming significantly more operational energy.