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NANOG Meeting Presentation Abstract

Data Center Challenges: Building Networks for Agility
Meeting: NANOG47
Date / Time: 2009-10-20 10:30am - 11:00pm
Room: Grand
Presenters: Speakers:

David A. Maltz, Microsoft Research

David A. Maltz is in the Networking Research Group of Microsoft Research where he designs new architectures for data center and enterprise networks and investigates techniques for managing IT infrastructure. He was a founder of startup companies in network traffic management and wireless networking, leading engineering efforts at each.
Abstract: To be agile and cost effective, data centers must allow dynamic resource allocation across large server pools. Today, the highest barriers to achieving this agility are limitations imposed by the network, such as bandwidth bottlenecks, subnet layout, and VLAN restrictions. To overcome this challenge, we present VL2, a practical network architecture that scales to support huge data centers with 100,000 servers while providing uniform high capacity between servers, performance isolation between services, and Ethernet layer-2 semantics.



VL2 uses (1) flat addressing to allow service instances to be placed anywhere in the network, (2) Valiant Load Balancing to spread traffic uniformly across network paths, and (3) end-system based address resolution to scale to large server pools, without introducing complexity to the network control plane. VL2’s design is driven by detailed measurements of traffic and fault data from a large operational cloud service provider. VL2’s implementation leverages proven network technologies, already available at low cost in high-speed hardware implementations, to build a scalable and reliable network architecture. As a result, VL2 networks can be deployed today, and we have built a working prototype with 300 servers. We evaluate the merits of the VL2 design using measurement, analysis, and experiments. Our VL2 prototype shuffles 2.7 TB of data among 75 servers in 395 seconds – sustaining a rate that is 94% of the maximum possible.
Files: youtubeData Center Challenges: Building Networks for Agility
pdfDave Maltz Presentation(PDF)
Sponsors: None.

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NANOG47 Abstracts

  • ISP Security Track
    Moderators:
    Roland Dobbins, Arbor Networks; Warren Kumari, Google; Panelists:
    Ian FetteGoogle; .
    Barry Raveendran Greene, Juniper; Joe AbleyICANN; .
  • ISP Security Track
    Moderators:
    Roland Dobbins, Arbor Networks; Warren Kumari, Google; Panelists:
    Ian FetteGoogle; .
    Barry Raveendran Greene, Juniper; Joe AbleyICANN; .
  • ISP Security Track
    Moderators:
    Roland Dobbins, Arbor Networks; Warren Kumari, Google; Panelists:
    Ian FetteGoogle; .
    Barry Raveendran Greene, Juniper; Joe AbleyICANN; .
  • ISP Security Track
    Moderators:
    Roland Dobbins, Arbor Networks; Warren Kumari, Google; Panelists:
    Ian FetteGoogle; .
    Barry Raveendran Greene, Juniper; Joe AbleyICANN; .
  • ISP Security Track
    Moderators:
    Roland Dobbins, Arbor Networks; Warren Kumari, Google; Panelists:
    Ian FetteGoogle; .
    Barry Raveendran Greene, Juniper; Joe AbleyICANN; .
  • IPv6 Emerging Stories of Success
    Moderators:
    Mark Kosters, ARIN; Panelists:
    John Brzozowski, Comcast; Matt RyanczakARIN; .
    Owen Delong, Hurricane Electric; Aaron Hughes, 6connect;
  • IPv6 Emerging Stories of Success
    Moderators:
    Mark Kosters, ARIN; Panelists:
    John Brzozowski, Comcast; Matt RyanczakARIN; .
    Owen Delong, Hurricane Electric; Aaron Hughes, 6connect;
  • IPv6 Emerging Stories of Success
    Moderators:
    Mark Kosters, ARIN; Panelists:
    John Brzozowski, Comcast; Matt RyanczakARIN; .
    Owen Delong, Hurricane Electric; Aaron Hughes, 6connect;
  • IPv6 Emerging Stories of Success
    Moderators:
    Mark Kosters, ARIN; Panelists:
    John Brzozowski, Comcast; Matt RyanczakARIN; .
    Owen Delong, Hurricane Electric; Aaron Hughes, 6connect;
  • IPv6 Emerging Stories of Success
    Moderators:
    Mark Kosters, ARIN; Panelists:
    John Brzozowski, Comcast; Matt RyanczakARIN; .
    Owen Delong, Hurricane Electric; Aaron Hughes, 6connect;

 

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