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NANOG Meeting Presentation Abstract

L3DSR -- Overcoming Layer 2 Limitations of Direct Server Return Load Balancing
Meeting: NANOG51
Date / Time: 2011-01-31 12:30pm - 1:00pm
Room: Grand
Presenters: Speakers:

Jan Schaumann, Yahoo!

Jan Schaumann is a Systems Architect at Yahoo!, a nice place to stay on the internet, and an Adjunct Professor of Computer Science at Stevens Institute of Technology, teaching classes in System Administration and UNIX Programming. He remains continually astonished that the internet at large does not break down spectacularly on a regular basis. Jan can be<BR> reached at: [email protected]
Abstract: Direct Server Return (DSR) load balancing is a common way to distribute network traffic using an approach that currently requires the load balancer and all hosts behind the Virtual IP (VIP) to be within the same Layer 2 network. This is a severe limitation that hinders scaling VIPs beyond a single contiguous subnet. In this paper, we present a method to perform DSR load balancing across Layer 3 boundaries (``L3DSR''), a solution allowing us to serve up to ten times as many VIPs on a single hardware Load Balancer compared to other Layer 3 load balancing methods. This technology has been developed and implemented in-house together with our hardware vendors and internal software development teams. We plan on open sourcing the relevant code on the server side in the near future.
Files: pdfSchaumann(PDF)
Sponsors: None.

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NANOG51 Abstracts

  • Lightning Talks
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    Linda DunbarHuawei; .
    Ken FloranceNetflix; .
    Brandon BianchiEquinix, Inc.; .
  • Lightning Talks
    Speakers:
    Linda DunbarHuawei; .
    Ken FloranceNetflix; .
    Brandon BianchiEquinix, Inc.; .
  • Lightning Talks
    Speakers:
    Linda DunbarHuawei; .
    Ken FloranceNetflix; .
    Brandon BianchiEquinix, Inc.; .
  • World IPv6 Day
    Moderators:
    Phil RobertsInternet Society; .
    Panelists:
    Leslie DaigleInternet Society; .
    Patrick GilmoreAkamai; .
    John BrzozowskiComcast; .
    Igor GashinskyYahoo!; .
  • World IPv6 Day
    Moderators:
    Phil RobertsInternet Society; .
    Panelists:
    Leslie DaigleInternet Society; .
    Patrick GilmoreAkamai; .
    John BrzozowskiComcast; .
    Igor GashinskyYahoo!; .
  • World IPv6 Day
    Moderators:
    Phil RobertsInternet Society; .
    Panelists:
    Leslie DaigleInternet Society; .
    Patrick GilmoreAkamai; .
    John BrzozowskiComcast; .
    Igor GashinskyYahoo!; .
  • World IPv6 Day
    Moderators:
    Phil RobertsInternet Society; .
    Panelists:
    Leslie DaigleInternet Society; .
    Patrick GilmoreAkamai; .
    John BrzozowskiComcast; .
    Igor GashinskyYahoo!; .
  • World IPv6 Day
    Moderators:
    Phil RobertsInternet Society; .
    Panelists:
    Leslie DaigleInternet Society; .
    Patrick GilmoreAkamai; .
    John BrzozowskiComcast; .
    Igor GashinskyYahoo!; .
  • Lightning Talks
    Speakers:
    Christian O'FlahertyInternet Society; .
    Jim CowieRenesys Corporation; .
    Manish KarirMerit Network, Inc.; .
  • Lightning Talks
    Speakers:
    Christian O'FlahertyInternet Society; .
    Jim CowieRenesys Corporation; .
    Manish KarirMerit Network, Inc.; .
  • Lightning Talks
    Speakers:
    Christian O'FlahertyInternet Society; .
    Jim CowieRenesys Corporation; .
    Manish KarirMerit Network, Inc.; .
  • IPv4 Exhaustion What Now?
    Moderators:
    Cathy Aronson, Cascadeo Corporation; Panelists:
    John CurranARIN; .
    Elise GerichICANN; .
    Daniel GoldingDH Capital, LLC; .
  • IPv4 Exhaustion What Now?
    Moderators:
    Cathy Aronson, Cascadeo Corporation; Panelists:
    John CurranARIN; .
    Elise GerichICANN; .
    Daniel GoldingDH Capital, LLC; .
  • IPv4 Exhaustion What Now?
    Moderators:
    Cathy Aronson, Cascadeo Corporation; Panelists:
    John CurranARIN; .
    Elise GerichICANN; .
    Daniel GoldingDH Capital, LLC; .
  • IPv4 Exhaustion What Now?
    Moderators:
    Cathy Aronson, Cascadeo Corporation; Panelists:
    John CurranARIN; .
    Elise GerichICANN; .
    Daniel GoldingDH Capital, LLC; .

 

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