Automatic failure recovery for software-defined networks

Maciej Kuzniart, Peter Perešínit, Nedeljko Vasict, Marco Canini, Dejan Kostic

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

41 Scopus citations

Abstract

Tolerating and recovering from link and switch failures are fundamental requirements of most networks, including Software-Defined Networks (SDNs). However, instead of traditional behaviors such as network-wide routing reconvergence, failure recovery in an SDN is determined by the specific software logic running at the controller. While this admits more freedom to respond to a failure event, it ultimately means that each controller application must include its own recovery logic, which makes the code more difficult to write and potentially more error-prone. In this paper, we propose a runtime system that automates failure recovery and enables network developers to write simpler, failure-agnostic code. To this end, upon detecting a failure, our approach first spawns a new controller instance that runs in an emulated environment consisting of the network topology excluding the failed elements. Then, it quickly replays inputs observed by the controller before the failure occurred, leading the emulated network into the forwarding state that accounts for the failed elements. Finally, it recovers the network by installing the difference ruleset between emulated and current forwarding states.

Original languageEnglish (US)
Title of host publicationHotSDN 2013 - Proceedings of the 2013 ACM SIGCOMM Workshop on Hot Topics in Software Defined Networking
Pages159-160
Number of pages2
DOIs
StatePublished - Sep 16 2013
Event2013 2nd ACM SIGCOMM Workshop on Hot Topics in Software Defined Networking, HotSDN 2013 - Hong Kong, China
Duration: Aug 16 2013Aug 16 2013

Publication series

NameHotSDN 2013 - Proceedings of the 2013 ACM SIGCOMM Workshop on Hot Topics in Software Defined Networking

Other

Other2013 2nd ACM SIGCOMM Workshop on Hot Topics in Software Defined Networking, HotSDN 2013
CountryChina
CityHong Kong
Period08/16/1308/16/13

Keywords

  • Fault tolerance
  • Software defined network

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Software

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