Practical delay monitoring for ISPs

Baek Young Choi, Sue Moon, Rene Cruz, Zhi Li Zhang, Christophe Diot

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

17 Scopus citations

Abstract

Point-to-point delay is an important network performance measure as well as a key parameter in SLAs. We study how to measure and report delay in a concise and meaningful way for an ISP, and how to monitor it efficiently. We analyze various measurement intervals and potential metric definitions. We find that reporting high quantiles (between 0.95 and 0.99)every 10-30 minutes as the most effective way to summarize the delay in an ISP. We then propose an active probing scheme to estimate a high quantile with bounded error. We show that only a small number of probes are sufficient to provide an accurate estimate. We validate the proposed delay monitoring technique on real data collected on the Sprint IP backbone network.

Original languageEnglish (US)
Title of host publicationCoNEXT 2005 - Proceedings of the 2005 ACM Conference on Emerging Network Experiment and Technology
Pages83-92
Number of pages10
DOIs
StatePublished - Dec 1 2005
Event1st International Conference on Emerging Networking Experiments and Technologies, CoNEXT'05 - Toulouse, France
Duration: Oct 24 2005Oct 27 2005

Publication series

NameCoNEXT 2005 - Proceedings of the 2005 ACM Conference on Emerging Network Experiment and Technology

Conference

Conference1st International Conference on Emerging Networking Experiments and Technologies, CoNEXT'05
CountryFrance
CityToulouse
Period10/24/0510/27/05

Keywords

  • Active probing
  • Delay
  • Performance monitoring

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