SDN-based dynamic multipath forwarding for inter-data center networking

Yao Chun Wang, Ying-Dar Lin, Guey Yun Chang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Since traffic engineering (TE) in Software Defined Networking (SDN) can be much more efficiently and intelligently implemented, Multipath in SDN becomes a new option. However, Ternary Content Addressable Memory (TCAM) size become the bottleneck of SDN. In this paper, we propose an SDN-based Dynamic Flowentry-Saving Multipath (DFSM) mechanism for inter-DC WAN traffic forwarding. DFSM adopts source-destination-based multipath forwarding and latency-aware flow-based traffic splitting to save flow entries and achieve better load balancing. Our evaluations indicate that DFSM saves 15% to 30% system flow entries in different topologies compared to label-based tunneling, and also reduces average latency by 10% to 48% by consuming 8% to 20% more flow entries than Equal-Cost Multipath (ECMP) in less-interconnected topologies. In addition, compared to even traffic splitting, DFSM reduces the standard deviation of path latencies from 14% to 7%.

Original languageEnglish
Title of host publicationLANMAN 2017 - 23rd IEEE International Symposium on Local and Metropolitan Area Networks
PublisherIEEE Computer Society
ISBN (Electronic)9781538607282
DOIs
StatePublished - 7 Jul 2017
Event23rd IEEE International Symposium on Local and Metropolitan Area Networks, LANMAN 2017 - Osaka, Japan
Duration: 12 Jun 201714 Jun 2017

Publication series

NameIEEE Workshop on Local and Metropolitan Area Networks
Volume2017-June
ISSN (Print)1944-0367
ISSN (Electronic)1944-0375

Conference

Conference23rd IEEE International Symposium on Local and Metropolitan Area Networks, LANMAN 2017
CountryJapan
CityOsaka
Period12/06/1714/06/17

Keywords

  • Inter data center
  • Multipath
  • OpenFlow
  • SDN

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