A Network Coding Approach to In-Band Control Traffic Sharing in Software Defined Networks

Fayaz Akhtar, Mubashir Husain Rehmani, Alan Davy

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

Abstract

In-band southbound connectivity provides a cost-efficient way to share control traffic between the software-defined network controller and underlying forwarding devices; without having to worry about establishing and maintaining a separate transport network. However, the adoption of such a design also exposes the control plane traffic to non-negligible delay and losses; incurred from burdening a single transport network with an increased number of transmissions. These drawbacks can severely degrade network performance. For instance, when the requests in the form of control packets from switch-to-controller (or vice-versa) are dropped, the information may not get updated promptly and thus, the system would not behave as desired or in the worst case scenario can collapse altogether. To mitigate these constraints, in this paper, we propose the use of network coding which encourages information mixing as packets traverse the network. We show that network coding when applied to control plane traffic in an in-band design can help overcome losses due to congestion and link impairments. Evaluation results suggest that network coding aware in-band design can mitigate number of transmissions as well as total delay incurred by control packet losses.

Original languageEnglish
Title of host publication2018 4th IEEE Conference on Network Softwarization and Workshops, NetSoft 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages318-322
Number of pages5
ISBN (Print)9781538646335
DOIs
Publication statusPublished - 10 Sep 2018
Event4th IEEE Conference on Network Softwarization and Workshops, NetSoft 2018 - Montreal, Canada
Duration: 25 Jun 201829 Jun 2018

Publication series

Name2018 4th IEEE Conference on Network Softwarization and Workshops, NetSoft 2018

Conference

Conference4th IEEE Conference on Network Softwarization and Workshops, NetSoft 2018
Country/TerritoryCanada
CityMontreal
Period25/06/201829/06/2018

Keywords

  • Control Traffic
  • In-band
  • Network coding
  • SDN

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