How to Implement Fog Computing in OMNeT++

To implement the Fog Computing in OMNeT++ consist of set up a reproduction wherever the edge devices, fog nodes, and cloud servers work composed to process data and make available the services. The essential tools to classical and put on like a network provided by the INET Framework in OMNeT++.

Given below is the procedure to get started:

Step-by-Step Implementations:

Install OMNeT++ and INET Framework

Make sure to have OMNeT++ and the INET Framework is installed. From the respective websites and obey the installation instructions to download it.

Create a New OMNeT++ Project

Open OMNeT++ IDE: Start the OMNeT++ IDE.
Create a New Project: Go to File -> New -> OMNeT++ Project. Label the project like FogComputingSimulation.

Import INET into Your Project

Import INET: Right-click on the project in the Project Explorer, get Properties. Go to Project References and form the INET project.
Copy INET Examples: To the project for reference from the INET framework to copy an example configurations.

Define the Network Topology

To make the network topology including the cloud servers, fog nodes, edge devices for to build a fresh NED file.

Example: Fog Computing Network Topology (FogNetwork.ned)

package fog;

import inet.node.inet.StandardHost;

import inet.node.inet.Router;

network FogNetwork

{

parameters:

@display(“bgb=800,400”);

submodules:

edgeDevice1: StandardHost {

@display(“p=100,300”);

}

edgeDevice2: StandardHost {

@display(“p=300,300”);

}

fogNode1: StandardHost {

@display(“p=500,300”);

}

fogNode2: StandardHost {

@display(“p=700,300”);

}

cloudServer: StandardHost {

@display(“p=900,300”);

}

router1: Router {

@display(“p=200,200”);

}

router2: Router {

@display(“p=400,200”);

}

router3: Router {

@display(“p=600,200”);

}

router4: Router {

@display(“p=800,200”);

}

connections:

edgeDevice1.ethg++ <–> Eth10M <–> router1.ethg++;

edgeDevice2.ethg++ <–> Eth10M <–> router1.ethg++;

router1.ethg++ <–> Eth10M <–> router2.ethg++;

router2.ethg++ <–> Eth10M <–> fogNode1.ethg++;

router2.ethg++ <–> Eth10M <–> router3.ethg++;

router3.ethg++ <–> Eth10M <–> fogNode2.ethg++;

router3.ethg++ <–> Eth10M <–> router4.ethg++;

router4.ethg++ <–> Eth10M <–> cloudServer.ethg++;

}

In this example:

To representing the edge devices by edgeDevice1 and edgeDevice2 are standard hosts.
To demonstrating the fog nodes by the standard hosts are fogNode1 and fogNode2.
cloudServer is a ordinary host in place of the cloud server.
To communication among the devices by the routers facilities are router1, router2, router3, and router4.
The Eth10M channel reproductions a 10 Mbps Ethernet link.

Configure the Simulation

To make an OMNeT++ initialization file to configure the limitations of the simulation.

Example: Configuration File (omnetpp.ini)

[General]

network = fog.FogNetwork

sim-time-limit = 100s

# Visualization

*.visualizer.canvasVisualizer.displayBackground = true

*.visualizer.canvasVisualizer.displayGrid = true

# Host Configuration

*.edgeDevice*.numApps = 1

*.edgeDevice*.app[0].typename = “UdpBasicApp”

*.edgeDevice*.app[0].destAddresses = “fogNode1 fogNode2”

*.edgeDevice*.app[0].destPort = 5000

*.edgeDevice*.app[0].messageLength = 1024B

*.edgeDevice*.app[0].sendInterval = 1s

*.fogNode*.numApps = 1

*.fogNode*.app[0].typename = “UdpSink”

*.fogNode*.app[0].localPort = 5000

*.cloudServer.numApps = 1

*.cloudServer.app[0].typename = “UdpSink”

*.cloudServer.app[0].localPort = 5000

# UDP Configuration

*.edgeDevice*.hasUdp = true

*.fogNode*.hasUdp = true

*.cloudServer.hasUdp = true

# IP Address Configuration

*.edgeDevice1.ipv4.config = xmldoc(“edgeDevice1.xml”)

*.edgeDevice2.ipv4.config = xmldoc(“edgeDevice2.xml”)

*.fogNode1.ipv4.config = xmldoc(“fogNode1.xml”)

*.fogNode2.ipv4.config = xmldoc(“fogNode2.xml”)

*.cloudServer.ipv4.config = xmldoc(“cloudServer.xml”)

*.router1.ipv4.config = xmldoc(“router1.xml”)

*.router2.ipv4.config = xmldoc(“router2.xml”)

*.router3.ipv4.config = xmldoc(“router3.xml”)

*.router4.ipv4.config = xmldoc(“router4.xml”)

Create IP Address Configuration Files

For each host and routers to make a XML files to describe the IP address configuration.

Example: IP Configuration File for edgeDevice1 (edgeDevice1.xml)

</interface>

<route>

</route>

</routing>

</config>

Example: IP Configuration File for edgeDevice2 (edgeDevice2.xml)

</interface>

<route>

</route>

</routing>

</config>

Example: IP Configuration File for fogNode1 (fogNode1.xml)

</interface>

</config>

Example: IP Configuration File for fogNode2 (fogNode2.xml)

</interface>

</config>

Example: IP Configuration File for cloudServer (cloudServer.xml)

</interface>

</config>

Example: IP Configuration File for router1 (router1.xml)

</interface>

</config>

Example: IP Configuration File for router2 (router2.xml)

</interface>

</config>

Example: IP Configuration File for router3 (router3.xml)

</interface>

</config>

Example: IP Configuration File for router4 (router4.xml)

</interface>

</config>

Implement Fog Computing Logic

To put on fog computing, requirement to implement logic for data processing and task offloading among the cloud server, fog nodes, and edge devices.

Example: Simple Fog Computing Logic (Pseudo-Code)

class FogComputingApp : public cSimpleModule

{

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

private:

void processLocally(cMessage *msg);

void offloadToFogNode(cMessage *msg);

void offloadToCloudServer(cMessage *msg);

};

void FogComputingApp::initialize() {

// Initialization code

}

void FogComputingApp::handleMessage(cMessage *msg) {

// Decide where to process the message

if (canProcessLocally(msg)) {

processLocally(msg);

} else if (canOffloadToFogNode(msg)) {

offloadToFogNode(msg);

} else {

offloadToCloudServer(msg);

}

void FogComputingApp::processLocally(cMessage *msg) {

// Logic to process data locally on the edge device

}

void FogComputingApp::offloadToFogNode(cMessage *msg) {

// Logic to offload data to the fog node

}

void FogComputingApp::offloadToCloudServer(cMessage *msg) {

// Logic to offload data to the cloud server

}

Run the Simulation

Build the Project: Right-click on the project and pick Build Project.
Run the Simulation: To start the simulation to get on the green play button in the OMNeT++ IDE to start the simulation.

We gain knowledge of about how to carry out the Fog Computing in OMNeT++ and we see how to define the network, make an IP address to the configuration files and more examples about to implement the Fog Computing in OMNeT++.

We successfully implemented Fog Computing within the OMNeT++ program for your projects. Please feel free to contact us for guidance, as we are committed to delivering optimal simulation results. Our expertise encompasses edge devices, fog nodes, and cloud servers tailored to your specific needs. Achieve superior project performance results with our assistance.