Scalable network virtualization in software-defined networks

Dmitry Drutskoy, Eric Keller, Jennifer L. Rexford

Research output: Contribution to journalArticlepeer-review

268 Scopus citations


Network virtualization gives each 'tenant' in a data center its own network topology and control over its traffic flow. Software-defined networking offers a standard interface between controller applications and switch-forwarding tables, and is thus a natural platform for network virtualization. Yet, supporting numerous tenants with different topologies and controller applications raises scalability challenges. The FlowN architecture gives each tenant the illusion of its own address space, topology, and controller, and leverages database technology to efficiently store and manipulate mappings between virtual networks and physical switches.

Original languageEnglish (US)
Article number6362137
Pages (from-to)20-27
Number of pages8
JournalIEEE Internet Computing
Issue number2
StatePublished - 2013

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications


  • NOX
  • OpenFlow
  • software-defined networks
  • virtualization


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