A survey of network virtualization

  • Authors:
  • N.M. Mosharaf Kabir Chowdhury;Raouf Boutaba

  • Affiliations:
  • Electrical Engineering and Computer Sciences, University of California, Berkeley, CA 94702, United States;Cheriton School of Computer Science, University of Waterloo, ON, Canada N2L 3G1 and Division of IT Convergence Engineering, POSTECH, Pohang KB 790-784, Republic of Korea

  • Venue:
  • Computer Networks: The International Journal of Computer and Telecommunications Networking
  • Year:
  • 2010

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Abstract

Due to the existence of multiple stakeholders with conflicting goals and policies, alterations to the existing Internet architecture are now limited to simple incremental updates; deployment of any new, radically different technology is next to impossible. To fend off this ossification, network virtualization has been propounded as a diversifying attribute of the future inter-networking paradigm. By introducing a plurality of heterogeneous network architectures cohabiting on a shared physical substrate, network virtualization promotes innovations and diversified applications. In this paper, we survey the existing technologies and a wide array of past and state-of-the-art projects on network virtualization followed by a discussion of major challenges in this area.