A Scalable, Commodity Data Center Network Architecture

A scalable , Commodity data Center Network ArchitectureMohammad of Computer Science and EngineeringUniversity of California, San DiegoLa Jolla, CA 92093-0404 ABSTRACTT oday s data centers may contain tens of thousands of computerswith significant aggregate bandwidth requirements. The networkarchitecture typically consists of a tree of routing and switchingelements with progressively more specialized and expensive equip-ment moving up the Network hierarchy. Unfortunately, even whendeploying the highest-end IP switches/routers, resulting topologiesmay only support 50% of the aggregate bandwidth available at theedge of the Network , while stillincurring tremendous cost. Non-uniform bandwidth among data Center nodes complicates applica-tion design and limits overall system this paper, we show how to leverage largely Commodity Eth-ernet switches to support the full aggregate bandwidth of clustersconsisting of tens of thousands of elements. Similar to how clustersof Commodity computers have largely replaced more specializedSMPs and MPPs, we argue that appropriately architected and inter-connected Commodity switches may deliver more performance atless cost than available from today s higher-end solutions.

A Scalable, Commodity Data Center Network Architecture Mohammad Al-Fares malfares@cs.ucsd.edu Alexander Loukissas aloukiss@cs.ucsd.edu Amin Vahdat

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  Architecture, Network, Center, Data, Commodity, Scalable, Commodity data center network architecture

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