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Assg #1: Measuring RTT

Assg #1: Measuring RTT. Write program to measure round-trip time between two end host on the Internet; Refer to ping: write a simple wrapper program.. Propose a model for RTT prediction, i.e., give a sequence of RTT measures, estimate the next RTT value.

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Assg #1: Measuring RTT

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  1. Assg #1: Measuring RTT • Write program to measure round-trip time between two end host on the Internet; • Refer to ping: write a simple wrapper program.. • Propose a model for RTT prediction, i.e., give a sequence of RTT measures, estimate the next RTT value. • Measure several values of RTT. What can you say about the samples? If they are variable, what can you do to reduce the variability of the RTT estimate? • Time series model 1

  2. Grad students: extra problem • Capacity and Available Bandwidth measurement: • Look at the approaches proposed by the GTech and UCLA groups: • http://www.cc.gatech.edu/fac/Constantinos.Dovrolis/bw.html • http://www.cc.gatech.edu/fac/Constantinos.Dovrolis/Papers/ton_slops.pdf • http://www.cs.ucla.edu/NRL/wireless/uploads/04_SIGCOMM_CapProbe.pdf • Write a short note on why the problem is hard and what are the top 5 novel ideas in the papers. Shivkuma@ecse.rpi.edu

  3. Submission • Submissions from each person to WebCT: • Source code; • Measured RTT outputs; • Report (i.e., RTT prediction model) • All in text format. • Use of perl script is strongly encouraged. • Due next Tuesday Sept 5th, 11:55pm • [Note: future assignments will be due on Sundays] Shivkuma@ecse.rpi.edu

  4. Discovery Problem: Optional • Take a look at paper titles and abstracts in IMW and IMC (the top internet measurement conference) • Make a list of 10 interesting measurement problems on the Internet; why they are interesting and hard. Shivkuma@ecse.rpi.edu

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