Transcription of A Scalable, Commodity Data Center Network Architecture
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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.
other hosts at the full bandwidth of their network interface (e.g., 1 Gb/s for commodity Ethernet designs). An oversubscription value of 5:1 means that only 20% of available host bandwidth is avail-able for some communication patterns. Typical designs are over-subscribed by a factor of 2.5:1 (400 Mbps) to 8:1 (125 Mbps) [1].
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