LIFEGUARD: Practical repair of persistent route failures

Ethan Katz-Bassett, Colin Scott, David R. Choffnes, Italo Cunha, Vytautas Valancius, Nick Feamster, Harsha V. Madhyastha, Thomas Anderson, Arvind Krishnamurthy

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

8 Scopus citations

Abstract

The Internet was designed to always find a mute if there is a policy- compliant path. However, in many cases, connectivity is disrupted despite the existence of an underlying valid path. The research community has focused on short-term outages that occur during route convergence. There has been less progress on addressing avoidable long-lasting outages. Our measurements show that long- lasting events contribute significantly to overall unavailability. To address these problems, we develop LIFEGUARD, a system for automatic failure localization and remediation. LIFEGUARD uses active measurements and a historical path atlas to locate faults, even in the presence of asymmetric paths and failures. Given the ability to locate faults, we argue that the Internet protocols should allow edge ISPs to steer traffic to them around failures, without requiring the involvement of the network causing the failure. Although the Internet does not explicitly support this functionality today, we show how to approximate it using carefully crafted BGP messages. LIFEGUARD employs a set of techniques to reroute around failures with low impact on working routes. Deploying LIFEGUARD on the Internet, we find that it can effectively route traffic around an AS without causing widespread disruption.

Original languageEnglish (US)
Title of host publicationProceedings of the ACM SIGCOMM 2012 and Best Papers of the Co-located Workshops
Pages395-406
Number of pages12
Edition4
DOIs
StatePublished - 2012
EventAnnual Conference of the ACM Special Interest Group on Data Communication on the Applications, Technologies, Architectures, and Protocols for Computer Communication, ACM SIGCOMM 2012 - Helsinki, Finland
Duration: Aug 13 2012Aug 17 2012

Publication series

NameComputer Communication Review
Number4
Volume42
ISSN (Print)0146-4833
ISSN (Electronic)1943-5819

Other

OtherAnnual Conference of the ACM Special Interest Group on Data Communication on the Applications, Technologies, Architectures, and Protocols for Computer Communication, ACM SIGCOMM 2012
CountryFinland
CityHelsinki
Period8/13/128/17/12

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Networks and Communications

Keywords

  • Availability
  • BGP
  • Measurement
  • Outages
  • Repair

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  • Cite this

    Katz-Bassett, E., Scott, C., Choffnes, D. R., Cunha, I., Valancius, V., Feamster, N., Madhyastha, H. V., Anderson, T., & Krishnamurthy, A. (2012). LIFEGUARD: Practical repair of persistent route failures. In Proceedings of the ACM SIGCOMM 2012 and Best Papers of the Co-located Workshops (4 ed., pp. 395-406). (Computer Communication Review; Vol. 42, No. 4). https://doi.org/10.1145/2377677.2377756