OMNeT++

Outline What is OMNeT++? Installation TicToc Tutorial for OMNeT++ Simulation models Visualizing the results with Plove and Scalars Reference

What is OMNeT++?

What is OMNeT++? OMNeT++ is a public-source, component-based, modular and open-architecture simulation environment with strong GUI support and an embeddable simulation kernel. OMNeT++ provides a component architecture for models. Components (modules) are programmed in C++, then assembled into larger components and models using a high-level language (NED). OMNeT++ is free for academic and non-profit use; commercial users must obtain a license from Omnest Global Inc.

Installation

Platforms OMNeT++ runs well on Third party software Linux most other Unix-like systems Win32 platforms (NT4.0, Window 2000, XP). Third party software C++ compiler Tcl/Tk Perl GraphViz Ghostscript UnxUtils LibXML/LibXSLT

Linux, Solaris and other Unix-like systems download the source tgz archive (omnetpp-<version>-src.tgz). Extract it into your home directory: (tar xvfz omnetpp-2.3-src.tgz ) You'll find a Readme.Unix file in its doc/ subdirectory -- just follow the instructions described there.

Windows You need to have NT4.0, Win2000 or XP. Win95/98/ME won't work. Install OMNeT++ into a directory that doesn't have space in its name, e.g. don't install in under C:\Program files\ (Otherwise you'll have problems with the makefiles.)

Windows/Microsoft Visual C++ 6.0 or 7.0 (.NET) Windows/MSVC - building from sources Windows/Cygwin Windows/MinGW

Install OMNeT++ on Windows with the Cygwin platform 1. install Cygwin 2. download X11inc.zip from the OMNeT++ site then extract it to /usr/include/X11 3. install OMNeT++ 4. add omnetpp/bin to the PATH 5. make sure nedtool, gned, opp_makemake and the sample simulations work

Install Cygwin When selection packages to install, be sure to include the following ones: gcc g++、make、tcl/tk… It is a good idea to create a .bash_profile for each user who will use Cygwin. This should be stored in each users home directory (i.e. /home/<you>). For example, an initial .bash_profile may contain: alias ls='ls -aF' export TCL_LIBRARY=c:/cygwin/usr/share/tcl8.3 TCL_LIBRARY is necessary to allow tcl/tk to operate correctly.

Install Cygwin Cygwin misses X11 headers that are normally required to build programs with Tcl/Tk. Extract it to /usr/include/X11. If you're getting compilation errors like /usr/include/tk.h:77: X11/Xlib.h: No such file or directory while building Tkenv. The BLT Tcl/Tk extension package is needed to run OMNeT++ 3.x on Cygwin. The Cygwin distribution doesn't contain BLT. and download the BLT source, build (./configure;make) and install (make install) it.

Install OMNeT++ Download the omnetpp source code. tar zxvf omnetpp.tgz ./configure make You should now add the following lines to your startup file .bash_profile: export PATH=$PATH:~/omnetpp/bin

Test OMNeT++ make sure nedtool, gned, opp_makemake and the sample simulations work cd ~/omnetpp/samples/dyna ./dyna

Tkenv Tkenv is a portable graphical windowing user interface. Tkenv supports interactive execution of the simulation, tracing and debugging.

Simulation models INET Framework The INET Framework is the successor of the IPSuite package. It provides TCP, IP, Ethernet, MPLS and other protocols. AdHocSim Nicola Concer's simulator for ad-hoc networks. Implements AODV protocol and several mobility models. Antnet The model implements an Ant-based routing algorithms (AntNet-CL and AntNet-CO) proposed by G. Di Caro and M. Dorigo.

Simulation models Mobility Framework Supports wireless and mobile simulations within OMNeT++. The core framework implements the support for node mobility, dynamic connection management and a wireless channel model. IPv6Suite IPv6Suite is an OMNeT++ model suite for accurate simulation of IPv6 protocols and networks. VideoInterface

Simulation models Ethernet Ethernet, Fast Ethernet and Gigabit Ethernet model. Includes MAC, LLC, switch, hub and bus models. P2P Swarming Protocol Simulation The first release of a swarming P2P protocol simulation. Centralized Network model based on Hiperlan/2 SimSANs A development toolkit for designing, modeling, simulating, and evaluating SANs (Storage Area Networks).

Simulation models Queues Queues is a queueing network tutorial and basic queueing library for OMNeT++. SCSI Bus SCSI bus model Personal Communication Services (PCS) File System Simulation A simulation of the components involved in a file system implementation.

OMNEST Demo OMNEST 3.0 Demo for Windows (installer) Contains executable demo simulations for several model frameworks written for OMNEST/OMNeT++

TicToc Tutorial for OMNeT++

TicToc Tutorial for OMNeT++ This short tutorial to OMNeT++ guides you through an example of modeling and simulation, showing you along the way some of the commonly used OMNeT++ features.

Steps for application 1. Create a working directory called tictoc. 2. Describe your example network by creating a topology file(*.ned). 3. We now need to implement the functionality of the simple module(*.cc). 4. We now create the Makefile which will help us to compile and link our program to create the executable tictoc: $ opp_makemake 5. Compile and link our very first simulation by making command: $ make 6.you have to create one. omnetpp.ini tells the simulation program which network you want to simulate 7. Once you complete the above steps, you launch the simulation by issuing this command:

tictoc1.ned

NED language overview NED (NEtwork Description) is the topology description language of OMNeT++. It has a simple syntax yet, but it is very powerful in defining topologies.

GNED - Graphical Network Editor GNED is a graphical editor for OMNeT++ models. Some features: fully two-way tool: switch back and forth between graphics and corresponding NED representation multiple files, multiple editing windows drag & drop submodule creation syntax highlighted NED editor

txc1.cc

Visualizing the results with Plove and Scalars

Plove - Overview Plove is a handy tool for plotting and analysing OMNeT++ simulation results. Plove works with output vector files; they are files OMNeT++ saves simulation results into. Output vector files contain several output vectors. An output vector contains a time series: several values with timestamps. Plove can plot output vectors, one or more in a graph. You can specify the drawing style (lines, dots etc) for each vector. You can set axis bounds, scaling, titles and labels, etc. You can save the graphs to files in various formats (EPS, GIF, etc) or (on Windows) copy them to the clipboard.

Scalars - Overview Scalars is a handy tool for creating bar charts and x-y plots from OMNeT++ output scalar files (omnetpp.sca by default). You can save the graphs to files in various formats (EPS, GIF, etc) or (on Windows) copy them to the clipboard.

Reference http://www.omnetpp.org/ http://www.omnest.com/

林志昇 zslin@mail.ndhu.edu.tw Thanks 林志昇 zslin@mail.ndhu.edu.tw