How to Calculate Network Migration time in ns3

To calculate network migration time in ns3, we need to simulate the network migration process and measure the time taken for the migration to complete. You can trust our team of experts to deliver the best project performance for your network migration process.

Here is an interesting guide on calculating network migration in ns3.

Steps for calculating network migration

1. Set up the simulation :

• Make sure that ns3 is installed in the computer. If not, install it and include necessary modules.

2. Define Network Topology:

• Define the network topology by incorporating source and destination nodes between which the migration will occur.

3. Implement the Network Migration Logic:

• To simulate the migration process, we should moving virtual machines (VMs), containers, or data from one node to another. Define the migration process using NS-3’s application layer.

4. Instrument the Simulation:

• to measure the time taken for the migration process, add code. We can use ns3 built-in time measurement capabilities.

5. Run the simulation:

• Execute the simulation and record the migration time.

Example code

Here is an example to set up a basic simulation to measure network migration time in ns3. This example assumes a simple case where a file transfer simulates the migration.

#include “ns3/core-module.h”

#include “ns3/network-module.h”

#include “ns3/internet-module.h”

#include “ns3/point-to-point-module.h”

#include “ns3/applications-module.h”

using namespace ns3;

NS_LOG_COMPONENT_DEFINE (“NetworkMigrationExample”);

void StartMigration (Ptr<Socket> socket, Address peerAddress, uint32_t packetSize, uint32_t numPackets, double interval)

{

for (uint32_t i = 0; i < numPackets; ++i)

{

socket->Send (Create<Packet> (packetSize));

Simulator::Schedule (Seconds (interval), &StartMigration, socket, peerAddress, packetSize, numPackets, interval);

}

}

int main (int argc, char *argv[])

{

CommandLine cmd;

cmd.Parse (argc, argv);

Time::SetResolution (Time::NS);

NodeContainer nodes;

nodes.Create (2);

PointToPointHelper pointToPoint;

pointToPoint.SetDeviceAttribute (“DataRate”, StringValue (“5Mbps”));

pointToPoint.SetChannelAttribute (“Delay”, StringValue (“2ms”));

NetDeviceContainer devices;

devices = pointToPoint.Install (nodes);

InternetStackHelper stack;

stack.Install (nodes);

Ipv4AddressHelper address;

address.SetBase (“10.1.1.0”, “255.255.255.0”);

Ipv4InterfaceContainer interfaces = address.Assign (devices);

uint16_t port = 9;

// Install server application on node 1

UdpServerHelper server (port);

ApplicationContainer serverApp = server.Install (nodes.Get (1));

serverApp.Start (Seconds (1.0));

serverApp.Stop (Seconds (10.0));

// Install client application on node 0

UdpClientHelper client (interfaces.GetAddress (1), port);

client.SetAttribute (“MaxPackets”, UintegerValue (320));

client.SetAttribute (“Interval”, TimeValue (MilliSeconds (10)));

client.SetAttribute (“PacketSize”, UintegerValue (1024));

ApplicationContainer clientApp = client.Install (nodes.Get (0));

clientApp.Start (Seconds (2.0));

clientApp.Stop (Seconds (10.0));

Simulator::Run ();

Simulator::Destroy ();

return 0;

}

Explanation

1. Setup:

Created two nodes and those nodes are connected by point-to-point links.

1. Applications:

On node 1, a UDP server is installed, and a UDP client is installed on node 0.

1. Migration Simulation:

To simulate the migration process, the client sends packets to the server.

1. Timing:

By capturing the start and end times of the migration process using Simulator::Now(), the time measurement can be done.

Measuring Migration Time

Capture the start and end times around the migration process, to measure the migration time accurately:

Time startTime = Simulator::Now ();

StartMigration (/* parameters */);

Time endTime = Simulator::Now ();

Running the Simulation

Compile and run the simulation using the following commands:

./waf configure

./waf build

./waf –run your-script-name

Replace your-script-name with the actual name of your script file.

Finally, we had our simulation results for calculating network migration time in ns3 by measuring the time taken for the migration to complete. Also, we provide a detailed explanation on Network Migration Time.Provide us with all the details of your parameters so that we can assist you in achieving optimal results when calculating the network migration time in ns3 simulation.