Network Simulator OMNeT++

OMNeT++ is a simulation platform for discrete-event systems. Even though it is primarily targeted at simulating computer networks and distributed systems, it cannot be used without any extensions for wireless communication. For this kind of simulations, external model frameworks have to be included. Currently, there are two prominent model frameworks which cover whole model suites for according focus of wireless research. These are the Mobility Framework and the INET Framework. As INET provides all models necessary for simulating Vehicle-2-X communication, it is selected for the integration to Eclipse MOSAIC.

For more information on the INET extension you should look closer on the website.

Operating System GNU/Linux
(Windows with mingw)
License GPL, free to use for academic use
Supported version(s) OMNeT++ 5.5
INET 4.1


There are two installation types of the MOSAIC OMNeT++ Federate:

Type Description
USER This installation type addresses those who only want to use the OMNeT++ network simulator for simulations.
Network configurations can also be adjusted.

If you install the federate with this installation type, OMNeT++ 5.5 and INET 4.1 will automatically be installed inside <mosaic>/bin/fed/omnetpp during the installation.
DEVELOPER The installation for developers addresses those who want to make changes or extend the MOSAIC OMNeT++ Federate.

This installation type awaits that OMNeT++ 5.5 and INET 4.1 are already installed on your system and
- PATH contains /path/to/omnetpp/bin
- LD_LIBRARY_PATH contains /path/to/omnetpp/lib and /path/to/inet/src
- C_INCLUDE_PATH contains /path/to/omnetpp/include and /path/to/inet/src

If you already have OMNeT++ 5.5 and INET 4.1 installed on your system, but you simply want to use OMNeT++ for simulations with Eclipse MOSAIC without developing further the MOSAIC OMNeT++ Federate, you may also choose the installation for developers to avoid multiple installations of OMNeT++ and INET on your system.

First of all, please make sure that you have the following libraries installed: unzip, tar, bison, flex, gcc, python, protoc

The installation of the current version of the OMNeT++ Federate was tested with protobuf version 3.7.0.
It is recommended to install this version. Here you receive more information about how to install protobuf.

Follow the links and download the source code of OMNeT++, INET and the MOSAIC OMNeT++ Federate:

Software Version Link
OMNeT++ 5.5
INET 4.1
MOSAIC OMNeT++ Federate 20.0

Available parameters of

Parameter Value Description
-t --installation-type <INSTALLATION_TYPE> Either USER or DEVELOPER.
-o --omnetpp <PATH_TO_OMNET_TGZ> Provide the archive containing the OMNeT++ source. You can obtain it from
-i --inet <PATH_TO_INET_TGZ> Provide the archive containing the inet source code. You can obtain it from If not given, the inet-source files are downloaded by this installation script.
-f --federate <PATH_TO_FEDERATE_ZIP> Provide the archive containing the OMNeT++-federate and patches for coupling OMNeT++ to Eclipse MOSAIC. If not given, the omnetpp-federate is downloaded by this installation script.
-so --skip-omnetpp - Skip the installation of OMNeT++
-si --skip-inet - Skip the installation of INET
-q --quiet - Less output and no interaction required
-j --parallel <NUMBER_OF_THREADS> Enables make to use the given number of compilation threads.
Per default your systems maximum is selected automatically.
-u --uninstall - Uninstalls the OMNeT++ federate
-h --help - Shows this usage screen

Installation for Users

Run the installation script (this takes a few minutes):

cd <mosaic>/bin/fed/omnetpp
chmod +x`
./ \
    --installation-type USER \
    --omnetpp /path/to/omnetpp-5.5-src.tgz \
    --inet /path/to/inet-4.1-src.tgz \
    --federate /path/to/

For the installation type USER the parameters -o, -i and -f are required.
The installation script should terminate with SUCESS: The MOSAIC OMNeT++ Federate was successfully installed. otherwise the installation failed.

Installation for Developers

Run the installation script (this takes a few minutes):

cd <mosaic>/bin/fed/omnetpp
chmod +x`
./ \
    --installation-type DEVELOPER \
    --federate /path/to/

For the installation type DEVELOPER the parameter -f is required.
The installation script should terminate with SUCCESS: The MOSAIC OMNeT++ Federate was successfully installed. otherwise the installation failed.

Extending MOSAIC OMNeT++ Federate

OMNeT++ Federate Configuration

To use OMNeT++ as network simulator in an Eclipse MOSAIC simulation, open <scenarioName>/scenario_config.json and enable OMNeT++:

"federates": {
   "omnetpp": true,

Now, when you run this scenario, Eclipse MOSAIC will automatically start the MOSAIC OMNeT++ Federate.

The main configuration of the MOSAIC OMNeT++ Federate is done within the configuration files omnetpp.ini and omnetpp_config.json in the scenario:

└─ <scenario_name>
   └─ omnetpp
      ├─ omnetpp.ini ...................... OMNeT++ federate configuration file
      └─ omnetpp_config.json .............. Ambassador configuration file

The whole OMNeT++ specific configuration is done via the omnetpp.ini file. It covers static parts for the simulator coupling such as the specific Eclipse MOSAIC Event Scheduler and the ScenarioManager. Furthermore, logging configurations and the typical parameters for the communication layers (MAC, PHY and Radio Channel) are addressed. The communication parameters are different for vehicles and RSUs. Please refer to the OMNeT++ documentation on the OMNeT++ homepage for further information about the structure of the omnetpp.ini file.

Installation in Docker environment

This is an experimental feature. Please refer to our mailing list if you experience any problems.

This guide gives instructions to execute the OMNeT++ federate inside a docker container. If you already installed OMNeT++ on your machine following the steps before, you can skip this section.

Docker is a new approach to execute software. More precisely, it “wraps software in a complete filesystem that contains everything it needs to run: code, runtime, system tools, and system libraries”. As a result, the software is executed within a container and its execution does not rely on the environment the container is running in.

In context of Eclipse MOSAIC, this approach allows to execute OMNeT++ within a docker container. The user does not need to manually install OMNeT++ and can even run OMNeT++ on Windows hosts.

  1. Install Docker ≥ 1.13 on your machine.
  2. To get everything to work, please make sure to execute the following steps depending on your operating system:
    • Windows - In the settings, share the drive where Eclipse MOSAIC is installed on. You may need to restart docker in the reset tab.
    • Linux - Make sure your user account belongs to the unix-group docker. You may need to restart your machine.
  3. Switch to the location of the Dockerfile in <mosaic>/bin/fed/omnetpp
  4. Execute the following command on command line:
    docker build -t omnetpp-federate.
    This could take a while to finish.
  5. Enter the name of the docker image etc/runtime.json in the omnetpp-section into the property dockerImage:
"federates": [
      "id": "omnetpp",
      "dockerImage": "omnetpp-federate",