NDLI: A scalable, commodity data center network architecture

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A scalable, commodity data center network architecture

Content Provider	ACM Digital Library
Author	Vahdat, Amin Al-Fares, Mohammad Loukissas, Alexander
Abstract	Today's data centers may contain tens of thousands of computers with significant aggregate bandwidth requirements. The network architecture typically consists of a tree of routing and switching elements with progressively more specialized and expensive equipment moving up the network hierarchy. Unfortunately, even when deploying the highest-end IP switches/routers, resulting topologies may only support 50% of the aggregate bandwidth available at the edge of the network, while still incurring tremendous cost. Non-uniform bandwidth among data center nodes complicates application design and limits overall system performance. In this paper, we show how to leverage largely commodity Ethernet switches to support the full aggregate bandwidth of clusters consisting of tens of thousands of elements. Similar to how clusters of commodity computers have largely replaced more specialized SMPs and MPPs, we argue that appropriately architected and interconnected commodity switches may deliver more performance at less cost than available from today's higher-end solutions. Our approach requires no modifications to the end host network interface, operating system, or applications; critically, it is fully backward compatible with Ethernet, IP, and TCP.
Starting Page	63
Ending Page	74
Page Count	12
File Format	PDF
ISBN	9781605581750
DOI	10.1145/1402958.1402967
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2008-08-17
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Equal-cost routing Data center topology
Content Type	Text
Resource Type	Article

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