Single-link failure recovery with or without software-defined networking switches

Dawei Li, Jie Wu, Dajin Wang

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

5 Scopus citations

Abstract

In this paper, we consider IP fast recovery from single-link failures in a given network topology. The basic idea is to replace some existing routers with a designated switch. When a link fails, the affected router will send all the affected traffic to the designated switch (through pre-configured IP tunnels), which will deliver the affected traffic to its destination without using the failed link. The goal of the approach is to achieve faster failure recovery than traditional routing protocols that employ reactive computing upon link failures. Software-Defined Networking (SDN) switches can serve as the designated switches because they can flexibly redirect affected traffic to other routes, instead of only to the shortest paths in the network. However, SDN switches are very expensive. Our objective is to minimize the number of SDN switches needed and to guarantee that the network can still recover from any single-link failure. For networks with uniform link costs, we show that using normal non-SDN switches with IP tunneling capability as designated switches can guarantee recovery from any single-link failure. For networks with general link costs, we show that by using SDN switches only when necessary, we can reduce the total number of SDN switches needed compared to an existing work.

Original languageEnglish
Title of host publication2018 International Conference on Information and Computer Technologies, ICICT 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages87-91
Number of pages5
ISBN (Electronic)9781538653845
DOIs
StatePublished - 9 May 2018
Event2018 International Conference on Information and Computer Technologies, ICICT 2018 - DeKalb, United States
Duration: 23 Mar 201825 Mar 2018

Publication series

Name2018 International Conference on Information and Computer Technologies, ICICT 2018

Other

Other2018 International Conference on Information and Computer Technologies, ICICT 2018
Country/TerritoryUnited States
CityDeKalb
Period23/03/1825/03/18

Keywords

  • IP tunneling
  • Software-defined networking (SDN)
  • equal cost multi-path (ECMP)
  • failure recovery
  • shortest paths

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