Practical delay monitoring for ISPs

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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.
Publisher
Centre National de la Recherche Scientifique, CNRS
Issue Date
2005-10-24
Language
English
Citation

1st International Conference on Emerging Networking Experiments and Technologies, CoNEXT'05, pp.83 - 92

DOI
10.1145/1095921.1095933
URI
http://hdl.handle.net/10203/126
Appears in Collection
CS-Conference Papers(학술회의논문)
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