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ISMA 2011 AIMS-3 Workshop on Active Internet Measurements

ISMA 2011 AIMS-3 Workshop on Active Internet Measurements. February 9-11 , 2011 UCSD, La Jolla, CA. Workshop Summary Mehmet Burak Akgun. Objectives of Workshop. Reviewing plans and results of various active measurement projects

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ISMA 2011 AIMS-3 Workshop on Active Internet Measurements

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  1. ISMA 2011 AIMS-3 Workshop on Active Internet Measurements February 9-11 , 2011UCSD, La Jolla, CA Workshop Summary MehmetBurakAkgun

  2. Objectives of Workshop • Reviewing plans and results of various active measurement projects • Identifying measurement priorities, strengths, and weaknesses of measurement efforts • Exchange views on operational and research measurement needs • Geolocation accuracy and evaluation methods • Fostering collaboration, coordination, and data sharing among participants • 7 Sessions, 32 Presentations, >60 Reseachers

  3. Sessions - Teams • Internet Topology Mapping • Policy, Cooperation, Data Sharing • IPv6 • Performance • Infrastructure • Routing and Path Quality Measurements • Annotations of Internet Topology

  4. Talks • Internet Topology Measurements • Performance • Geolocalization

  5. Matthew Luckie, David Murrell (Univ. of Waikato) Amogh Dhamdhere, kc Claffy (CAIDA/UCSD) Measured Impact of Crooked Traceroute

  6. X B Y A D C The Problem 1 0 • Classic traceroute: probes toward a destination can take different paths • Augustin et al. IMC’07: 39% of paths have at least one per-flow load-balancer • We try to quantify false link inference rate • Can’t go back and fix pre-2006 data 1 0 1 0 2 0 2 1 1 0 1 0 X0 X0 A0 B0 C0 D0 Y0 Y0

  7. Summary • Quantified the impact of classic traceroute + per-flow load balancing • Macroscopic topology: small impact • 0.76% of links in classic ICMP traceroute are invalid • 2.71% of links in classic UDP traceroute are invalid • Classic ICMP-echo approach not as affected by per-flow load balancers as UDP • ISP mapping: larger impact • Classic traceroute overestimates router degrees (median factor 2.9), PoP level path diversity

  8. Talks • Internet Topology Measurements • Performance • Geolocalization CNL 2010

  9. Talks • Internet Topology Measurements • Performance • Geolocalization CNL 2010

  10. Thank You !

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