Design of shuffle net based fast hybrid data center network architeture

Abstract

Traffic forecasts predict a more than threefold increase in the global datacenter workload newlinein coming years, caused by the increasing adoption of cloud and data-intensive newlineapplications. Consequently, there has been an unprecedented need for ultra-high newlinethroughput and minimal latency. Currently deployed hierarchical architectures using newlineelectronic packet switching technologies are costly and energy-inefficient. Very high newlinecapacity switches are required to satisfy the enormous bandwidth requirements of cloud newlinedatacenters and this limits the overall network scalability. With the maturity of photonic newlinecomponents, turning to optical switching in datacenters is a viable option to accommodate newlinegreater bandwidth and network flexibility while potentially minimizing the latency, cost newlineand power consumption. newlineVarious data center network (DCN) architectures have been proposed to date and this newlinethesis includes a comparative analysis of such electronic and optical topologies to judge newlinetheir suitability based on network performance parameters and cost/energy effectiveness, newlinewhile identifying the challenges faced by recent DCN infrastructures. newlineCurrent data center networks rely on electronic switching and point-to-point interconnects. newlineWhen considering future data center requirements, these solutions will raise issues in newlineterms of flexibility, scalability, performance, and energy consumption. For this reason newlineseveral optical switched interconnects, which make use of optical switches and newlinewavelength division multiplexing (WDM), have been recently proposed. However, the newlinearchitectures proposed so far suffer from low flexibility and are not able to provide service newlinedifferentiation. Due to the unprecedented growth of cloud-centric applications, the next- newlinegeneration DCNs would require low latency and high capacity (speed) along with a newlinescalable architecture. So far the DCNs have been designed with electrical packet- newlineswitching, but the interconnections between the servers, switch and between the switches newlineused optical fiber links. Given the fact that, the DCNs should accommodate huge number newlineof servers, such architectures cannot be recommended as scalable network for future newlinegrowth, as the network complexity with electrical-switching equipment turns out to be a newlineserious issue due to limited bandwidth in electrical switches, high power consumption and newline newline