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Agenda & notes for NIIT/SLAC meeting 4/12/2002


  • Will need a fast traceroute as one scales to few hundred hosts (this is a nice stand alone project)
    • Goal a new parallel traceroute, send probes (ICMP or UDP selectable) in parallel to different TTLs, provide many of standard traceroute features (-q number of probes, -w wait time, -I ICMP probe, -f first hop TTL, -F don’t fragment …, see the Linux traceroute man pages for ideas) plus add option to get AS information. Should not require user to need root.
    • Fawad Nazir found suitable tool at http://packages.debian.org/unstable/net/traceroute-nanog.html. We need to install, evaluate and see how to make work for a user without root.

Web Page

M.Sufyan Masood has put together a web page at We all need to provide input as to what else is needed.

Mailing List

A mailing list has been set up at Maggie-ns@niit.edu.pk. Only subscribers can submit (to reduce spam).

Plot lat/long

Jerrod has sent information (4/1/04) needed to allow someone at NIIT to modify  plot-lat/long (see http://www.caida.org/tools/visualization/plot-latlong/index.xml) to

  • provide support for different symbols
  • and be able to create mouseover maps so could got to a URL or even just give the site name.

We use this for displaying where PingER nodes are located, see http://www.slac.stanford.edu/~iepm/output.png

If more information is needed then ask Jerrod


Analysis presentation of Internet trends

  • Possibly provide a Windows Web server with access to Excel to analyze and create plots of PingER data
    • Long term exponential fits, aggregation by region etc.
    • Number of hosts with loss qualities
    • Tie into web services/SQL access to data to make a much more flexible, distributed way of selecting analyzing displaying data
  • Do it with Perl scripts/GnuPlot flat files etc.

Jerrod is writing up information on how to remotely access PingER long term archived data so it can be used to make long term trends plots.

Based on experience with installing a PingER monitoring site develop a package to make installation much easier

Extend PingER gathering to make it hourly so data is more real-time.

Understand pingtable.pl etc. and extend to support viewing monthly data older than 2 years

Schedule next meeting

Monday April 26th, 9:00am PDT. Do we need video?


Maybe look into qiperf but need Web100 (using at NIIT may be a bit intense with todays NIIT network, also it would be better if this work was done by NCSC who maintain iperf)

NDT (needs web100, active work is in progress in Internet2 so doubt this is a good idea at the moment)

  • Install an NDT server at NIIT
  • Command line interface
  • Make client lighter weight

Work on change detection, alerting – this is of immediate interest, is a tough problem, might be a good idea for a summer project then carry back to NIIT

  • Research, no guarantee of a product
  • On detecting a significant change, gather relevant information, e.g. RTT, traceroute, ping routers along route, get AS of suspicious points and get contacts. Look to see if can get more information, e.g. from other monitoring infrastructures such as PlanetLab, IEPM-BW, PingER which have “nearby” data.
  • Add to the detection the gathering of relevant information for the complete path.
  • Filter alerts (hysteresis) before reporting


  • The richness of data collected at NIIT initially is limited since most connections go via London. So probably makes sense to focus on SLAC/CERN data for analysis
  • Given the low speed of the NIIT line it we do not want to impose much traffic so running the full iepm-bw with iperf etc. is probably a bad idea at first.
  • We are working on an IEPM-LITE that may be quite appropriate for NIIT, see

     http://www.slac.stanford.edu/comp/net/iepmlite/tracesummaries/today.html and  http://www.slac.stanford.edu/comp/net/iepmlite/html/slac_wan_bw_tests.html

    • It does traceroutes, RTT & available bandwidth measurements
    • Measurement and analysis of  traceroutes from Pakistan might be very interesting, could show strange routes.
    • Looking for changes in abing performance  is low network impact, fold in diurnal and weekly variations
    • Should install at NIIT
      • Student works on install, nb. Not been installed elsewhere so needs work to make into installable package, this could be an NIIT project
    • Wait until package is stable at SLAC.

Student visit (Awaits BS to get started on paperwork)

  • We (SLAC) need named individual with a BS to whom we can issue an invitation so we can get started on getting the visa.
    • Focus on one student/project initially
    • Student visit will be to learn PingER and IEPM technologies so can take back to Pakistan