A Case for SDN-based Network Virtualization

Gyeongsik Yang, Changyong Shin, Yeonho Yoo, Chuck Yoo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Network virtualization (NV) becomes an essential technology in cloud computing that isolates network flows for tenants. However, because existing NV technologies like overlay do not enable tenants to directly program (i.e., provision, control, and monitor) network resources, software-defined networking (SDN)-based NV (SDN-NV) has been proposed. Despite its great benefits, SDN-NV has been believed to bring considerable overheads due to the network hypervisor (NH). However, to date, there is no definite performance evaluation that proves the overheads of SDN-NV. To this end, this paper comprehensively investigates the performance and overheads of SDN-NV. Our experiment results reveal that SDN-NV provides the data plane performance comparable to or even better (up to 10.5× better TCP throughput) than the existing NV technologies. Also, the results on NH show that its overheads remain mostly constant, even when the number of switches, virtual networks, or network flows increases. In short, our evaluation indicates that the overhead of SDN-NV should not deter its practical use in datacenters.

Original languageEnglish
Title of host publicationProceedings - 29th International Symposium on the Modeling, Analysis, and Simulation of Computer and Telecommunication Systems, MASCOTS 2021
PublisherIEEE Computer Society
ISBN (Electronic)9781665458382
DOIs
Publication statusPublished - 2021
Event29th International Symposium on the Modeling, Analysis, and Simulation of Computer and Telecommunication Systems, MASCOTS 2021 - Houston, United States
Duration: 2021 Nov 32021 Nov 5

Publication series

NameProceedings - IEEE Computer Society's Annual International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunications Systems, MASCOTS
ISSN (Print)1526-7539

Conference

Conference29th International Symposium on the Modeling, Analysis, and Simulation of Computer and Telecommunication Systems, MASCOTS 2021
Country/TerritoryUnited States
CityHouston
Period21/11/321/11/5

Keywords

  • Cloud computing
  • Network virtualization
  • Performance evaluation
  • Software-defined networking

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications
  • Software
  • Modelling and Simulation

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