2nd European ns-2 Workshop

Tutorial: Internet Simulations with the NS simulator

Organized by:

ftw. Forschungszentrum Telekommunikation Wien
(Telecommunications Research Center Vienna)

Presented by:

Polly Huang.
Computer Engineering and Networks Lab (TIK)
Swiss Federal Institute of Technology Zurich (ETH)

Time:

Wed, 18 April, 2001, 9AM-5PM
Thu, 19 April, 2001, 9AM-5PM

Location:

Altes Allgemeines Krankenhaus (Altes AKH), University Campus
Spitalgasse 2, Hof 7, 1st Floor, 1090 Vienna

Fee:

EUR 40.- covering class material, a CDROM, and lab access

See the official page at ftw.

Description:

This tutorial is intended for anyone who would like to use ns more actively, or extend its functionality. We will discuss the primary components of the simulator (the scheduler, connection oriented and connectionless protocols, trace support, routing, topology generation, multicast support, and queue management), and discuss various issues in adding new routing or transport protocols, scheduling algorithms, link layers, applications, or visualization tools to ns.

The tutorial is intended to largely repeat the tutorial information we have presented at IEC San Diego and ETH Zurich in 2000, as well as previous workshops/tutorials at SIGCOMM '97, ISI and in Washington, DC. The format and content will be very similar to the previous workshops, with updates based on functionality added to the ns simulator recently.

In addition, for attendees to get hands-on experience using ns, exercises in various levels will be given as lectures progress in breadth and depth.

Intended Audience:

• Researchers who have started looking at the basics of ns-2, but had problems realizing exactly how ns-2 can be manipulated to get the results they want
• Users who tried ns-2 before but had to give up because learning otcl/tcl was such a pain
• Researchers who need to evaluate their design using simulations but not sure where to start
• Researchers who need to compare alternative solutions using simulations but not sure if ns-2's set of TCP/IP protocols covers them all and to what extend
• Professors/teachers who are interested in illustrating TCP/IP protocol dynamics using animated examples (ns-2 and nam combination)
• Users of commercial simulators who are considering switching to a free simulator
• Users of home-bred simulators who are considering switching to a more extendible simulator

Presentation Slides:

powerpoint: ns-ftw-1.ppt| ns-ftw-2.ppt
gzip'd postscript: ns-ftw-1.ps.gz| ns-ftw-2.ps.gz

Outline:

• 18 April, Wednesday:
  • 09.00 - 11.50 (Lectures)
    • Overview, Introduction, Goal, Developers
    • Design principle, Download and installation
    • tcl & otcl fundamantals
    • ns-2 wired/wireless fundementals
    • TCP, RED, multicast web traffic , and wireless examples
  • 13.30 - 17.00 (Exercises)
    • Install ns
    • Run/play with the examples scripts provided
    • Simple tcl/otcl exercises
    • Simple ns exercises
• 19 April, Thursday:
  • 09.00 - 11.50 (Lectures)
    • Quick recap
    • ns-2 wired/wireless internals
    • otcl and C++ linkage
    • Creating and changing protocol modules
  • 13.30 - 17.00 (Exercises)
    • Co-existing TCP and UDP traffic
    • Compare bandwidth shares
    • Send TCP data aggressively
    • Send UDP data TCP friendly

References:

• The main VINT/ns page
• The ns Manual page containing the mannual and previous workshop/tutorial material