NS3 Broadcast Example

csma-broadcast.cc (put this file under scratch)

#include <iostream>

#include <fstream>

#include <string>

#include <cassert>

#include "ns3/core-module.h"

#include "ns3/network-module.h"

#include "ns3/csma-module.h"

#include "ns3/applications-module.h"

#include "ns3/internet-module.h"

using namespace ns3;

NS_LOG_COMPONENT_DEFINE ("CsmaBroadcastExample");

int

main (int argc, char *argv[])

{

LogComponentEnable ("UdpEchoClientApplication", LOG_LEVEL_INFO);

LogComponentEnable ("UdpEchoServerApplication", LOG_LEVEL_INFO);

CommandLine cmd (__FILE__);

cmd.Parse (argc, argv);

NodeContainer n;

n.Create (3);

CsmaHelper csma;

csma.SetChannelAttribute ("DataRate", DataRateValue (DataRate (5000000)));

csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));

NetDeviceContainer devices = csma.Install (n);

InternetStackHelper internet;

internet.Install (n);

Ipv4AddressHelper ipv4;

ipv4.SetBase ("192.168.1.0", "255.255.255.0");

ipv4.Assign (devices);

UdpEchoServerHelper echoServer (9);

ApplicationContainer serverApps = echoServer.Install (n.Get (1));

serverApps.Add(echoServer.Install (n.Get (2)));

serverApps.Start (Seconds (1.0));

serverApps.Stop (Seconds (10.0));

UdpEchoClientHelper echoClient (Address (InetSocketAddress (Ipv4Address ("255.255.255.255"), 9)));

echoClient.SetAttribute ("MaxPackets", UintegerValue (1));

echoClient.SetAttribute ("Interval", TimeValue (Seconds (1.0)));

echoClient.SetAttribute ("PacketSize", UintegerValue (1024));

ApplicationContainer clientApps = echoClient.Install (n.Get(0));

clientApps.Start (Seconds (2.0));

clientApps.Stop (Seconds (10.0));

AsciiTraceHelper ascii;

csma.EnableAsciiAll (ascii.CreateFileStream ("csma-broadcast.tr"));

NS_LOG_INFO ("Run Simulation.");

Simulator::Run ();

Simulator::Destroy ();

NS_LOG_INFO ("Done.");

}

Execution

N0 ((192.168.1.1) send out a broadcast packet with destination ip address 255.255.255.255. N1 (192.168.1.2) and N2 (192.168.1.3) receive the packet and then send echo packet back to N0.

adhoc-broadcast.cc (put this file under scratch)

#include "ns3/core-module.h"

#include "ns3/global-route-manager.h"

#include "ns3/network-module.h"

#include "ns3/internet-module.h"

#include "ns3/wifi-module.h"

#include "ns3/mobility-module.h"

#include "ns3/netanim-module.h"

#include "ns3/applications-module.h"

using namespace ns3;

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

{

LogComponentEnable ("UdpEchoClientApplication", LOG_LEVEL_INFO);

LogComponentEnable ("UdpEchoServerApplication", LOG_LEVEL_INFO);

CommandLine cmd;

cmd.Parse (argc, argv);

NodeContainer n;

n.Create (3);

WifiHelper wifi;

wifi.SetStandard (WIFI_STANDARD_80211a);

WifiMacHelper wifiMac;

YansWifiPhyHelper wifiPhy;

YansWifiChannelHelper wifiChannel = YansWifiChannelHelper::Default ();

wifiMac.SetType ("ns3::AdhocWifiMac");

wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager",

"DataMode", StringValue ("OfdmRate54Mbps"));

wifiPhy.SetChannel (wifiChannel.Create ());

NetDeviceContainer devices = wifi.Install (wifiPhy, wifiMac, n);

MobilityHelper mobility;

Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();

positionAlloc->Add (Vector (0.0, 0.0, 0.0));

positionAlloc->Add (Vector (5.0, 0.0, 0.0));

positionAlloc->Add (Vector (10.0, 0.0, 0.0));

mobility.SetPositionAllocator (positionAlloc);

mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");

mobility.Install (n);

InternetStackHelper stack;

Ipv4ListRoutingHelper list;

Ipv4StaticRoutingHelper staticRouting;

list.Add (staticRouting, 0);

stack.SetRoutingHelper (list);

stack.Install (n);

Ipv4AddressHelper ipv4;

ipv4.SetBase ("10.1.1.0", "255.255.255.0");

Ipv4InterfaceContainer i = ipv4.Assign (devices);

UdpEchoServerHelper echoServer (9);

ApplicationContainer serverApps = echoServer.Install (n.Get (1));

serverApps.Add(echoServer.Install (n.Get (2)));

serverApps.Start (Seconds (1.0));

serverApps.Stop (Seconds (10.0));

UdpEchoClientHelper echoClient (Address (InetSocketAddress (Ipv4Address ("255.255.255.255"), 9)));

echoClient.SetAttribute ("MaxPackets", UintegerValue (1));

echoClient.SetAttribute ("Interval", TimeValue (Seconds (1.0)));

echoClient.SetAttribute ("PacketSize", UintegerValue (1024));

ApplicationContainer clientApps = echoClient.Install (n.Get(0));

clientApps.Start (Seconds (2.0));

clientApps.Stop (Seconds (10.0));

AsciiTraceHelper ascii;

wifiPhy.EnableAsciiAll (ascii.CreateFileStream ("adhoc-broadcast.tr"));

uint32_t stopTime = 11;

Simulator::Stop (Seconds (stopTime));

Simulator::Run ();

Simulator::Destroy ();

}

Execution

N1(10.1.1.3) and N2(10.1.1.1) are all within the transmission of N0 (10.1.1.1). So N1 and N2 can receive the packet sent from N0.

Back to NS3 Learning Guide

Last Modified: 2022/2/12 done

[Author]

Dr. Chih-Heng Ke

Department of Computer Science and Information Engineering, National Quemoy University, Kinmen, Taiwan

Email: smallko@gmail.com