GEOCAST Project Work Package WP2400:


Simulation Setup and Configuration

ns Network Simulator was used for simulation work. ns is based on the University of California Berkeley (UCB)/Lawrence Berkeley National Laboratory (LBNL) network simulator. It is an event-driven simulator and derived originally from the REAL network simulator. The simulator has an object-oriented architecture written in C++, with a front-end Object-oriented Text Command language (Tcl) interpreter based on Massachusetts Institute of Technology (MITs) Object-Oriented Text Command Language (Tcl) - (OTcl).

ns Version and Platform Configuration

  • Simulation was based on ns Version 2.1b7
  • Hardware based on Sun Sparc Ultra 10 running Solaris 2.6
  • 10 GB H/Disk, with 256 MB Ram and 300 MHz
  • Other platforms tested include HP Unix and Linux (RedHut/PPC)

Simulation Scenario

  • Scenario based on One-to-Many GEOCAST Scenario I
  • ns Simulation was conducted using 2000 nodes (approx)

ns Limitations

  • ns still unstable in various platforms (e.g. HP Unix)
  • Memory limitations


  • Run-time limitaions

Related Resources

  • Download ns source code and generated test data. [tar , gz]
  • Tips and statistical data for running large ns Simulations
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