Development of an Enhanced Adaptive Energy Saving Scheme for Green Optical Networking
|Kathiravan.A1, Dr.N.K.Sakthivel2, Dr.S.Subasree3
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Global IP traffic is predicted to reach 63.9 exabytes per month in2014. This growth rate has not only driven up demand for bandwidth from the Internet backbone infrastructure but has also presented providers with new challenges such as Enormous Energy Consumption, which causes Global Warming. To address these issues, Load adaptive energy saving schemes were proposed which is for backboneIP networks use dynamic transport circuit services to adapt the active network resources to the current traffic demand in order to reduce the network’s energy consumption. Recently, several approaches, categorized as Switch-Off schemes, have been proposed which attempt to reduce the energy consumption of already existing networks by switching-off IP ports and links during periods of low traffic. Although it has been shown that these schemes can notably decrease the network’s energy consumption, they are prone to instabilities in the IP routing service and decreased resilience due to reduced connectivity. To address these challenges, Switch-On scheme in an IP-over-WDM network was proposed, where the network is designed so that the essential IP connectivity is maintained during low traffic periods while dynamic circuits are switched on in the optical layer to boost network capacity during periods of high traffic demand. The Wavelength Division Multiplexed (WDM) layer is provided with the traffic management flexibility and the engineering simplicity of digital transport systems (significant operational expenditures reduction) and with the network cost savings of large-scale photonic integration(capital expenditures reduction).However, from our experimental results, it is revealed that the proposed Improved Load Adaptive Energy Saving Scheme which is integrated with Switch-On Technique for Saving Energy in Optical Networks causes considerable computational complexity. This could be minimized, if we are designing new mechanism which reduces the packet processing period. It combines packet and WDM switching technologies where appropriate, with the ability to offload pass-through traffic from the packet layer to the lowest possible layer, so as to reduce costs and power consumption by eliminating unnecessary packet processing, which will reduce the computational complexity, it also further improve the performance of Optical Network in terms of Power Consumption, Throughput, Router Utilization and Bandwidth Utilization.