A Discrete-Event Network Simulator
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star.cc
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17 
18 #include "ns3/core-module.h"
19 #include "ns3/network-module.h"
20 #include "ns3/netanim-module.h"
21 #include "ns3/internet-module.h"
22 #include "ns3/point-to-point-module.h"
23 #include "ns3/applications-module.h"
24 #include "ns3/point-to-point-layout-module.h"
25 
26 // Network topology (default)
27 //
28 // n2 n3 n4 .
29 // \ | / .
30 // \|/ .
31 // n1--- n0---n5 .
32 // /|\ .
33 // / | \ .
34 // n8 n7 n6 .
35 //
36 
37 
38 using namespace ns3;
39 
41 
42 int
43 main (int argc, char *argv[])
44 {
45 
46  //
47  // Set up some default values for the simulation.
48  //
49  Config::SetDefault ("ns3::OnOffApplication::PacketSize", UintegerValue (137));
50 
51  // ??? try and stick 15kb/s into the data rate
52  Config::SetDefault ("ns3::OnOffApplication::DataRate", StringValue ("14kb/s"));
53 
54  //
55  // Default number of nodes in the star. Overridable by command line argument.
56  //
57  uint32_t nSpokes = 8;
58 
59  CommandLine cmd;
60  cmd.AddValue ("nSpokes", "Number of nodes to place in the star", nSpokes);
61  cmd.Parse (argc, argv);
62 
63  NS_LOG_INFO ("Build star topology.");
65  pointToPoint.SetDeviceAttribute ("DataRate", StringValue ("5Mbps"));
66  pointToPoint.SetChannelAttribute ("Delay", StringValue ("2ms"));
67  PointToPointStarHelper star (nSpokes, pointToPoint);
68 
69  NS_LOG_INFO ("Install internet stack on all nodes.");
70  InternetStackHelper internet;
71  star.InstallStack (internet);
72 
73  NS_LOG_INFO ("Assign IP Addresses.");
74  star.AssignIpv4Addresses (Ipv4AddressHelper ("10.1.1.0", "255.255.255.0"));
75 
76  NS_LOG_INFO ("Create applications.");
77  //
78  // Create a packet sink on the star "hub" to receive packets.
79  //
80  uint16_t port = 50000;
81  Address hubLocalAddress (InetSocketAddress (Ipv4Address::GetAny (), port));
82  PacketSinkHelper packetSinkHelper ("ns3::TcpSocketFactory", hubLocalAddress);
83  ApplicationContainer hubApp = packetSinkHelper.Install (star.GetHub ());
84  hubApp.Start (Seconds (1.0));
85  hubApp.Stop (Seconds (10.0));
86 
87  //
88  // Create OnOff applications to send TCP to the hub, one on each spoke node.
89  //
90  OnOffHelper onOffHelper ("ns3::TcpSocketFactory", Address ());
91  onOffHelper.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1]"));
92  onOffHelper.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0]"));
93 
94  ApplicationContainer spokeApps;
95 
96  for (uint32_t i = 0; i < star.SpokeCount (); ++i)
97  {
98  AddressValue remoteAddress (InetSocketAddress (star.GetHubIpv4Address (i), port));
99  onOffHelper.SetAttribute ("Remote", remoteAddress);
100  spokeApps.Add (onOffHelper.Install (star.GetSpokeNode (i)));
101  }
102  spokeApps.Start (Seconds (1.0));
103  spokeApps.Stop (Seconds (10.0));
104 
105  NS_LOG_INFO ("Enable static global routing.");
106  //
107  // Turn on global static routing so we can actually be routed across the star.
108  //
110 
111  NS_LOG_INFO ("Enable pcap tracing.");
112  //
113  // Do pcap tracing on all point-to-point devices on all nodes.
114  //
115  pointToPoint.EnablePcapAll ("star");
116 
117  NS_LOG_INFO ("Run Simulation.");
118  Simulator::Run ();
120  NS_LOG_INFO ("Done.");
121 
122  return 0;
123 }
void AssignIpv4Addresses(Ipv4AddressHelper address)
holds a vector of ns3::Application pointers.
tuple pointToPoint
Definition: first.py:28
an Inet address class
static Ipv4Address GetAny(void)
static void PopulateRoutingTables(void)
Build a routing database and initialize the routing tables of the nodes in the simulation.
int main(int argc, char *argv[])
Definition: star.cc:43
hold variables of type string
Definition: string.h:18
void Add(ApplicationContainer other)
Append the contents of another ApplicationContainer to the end of this container. ...
A helper to make it easier to create a star topology with PointToPoint links.
static void Run(void)
Run the simulation until one of:
Definition: simulator.cc:157
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:170
aggregate IP/TCP/UDP functionality to existing Nodes.
#define NS_LOG_INFO(msg)
Use NS_LOG to output a message of level LOG_INFO.
Definition: log.h:223
A helper to make it easier to instantiate an ns3::PacketSinkApplication on a set of nodes...
Build a set of PointToPointNetDevice objects.
void SetDeviceAttribute(std::string name, const AttributeValue &value)
Set an attribute value to be propagated to each NetDevice created by the helper.
A helper to make it easier to instantiate an ns3::OnOffApplication on a set of nodes.
Definition: on-off-helper.h:42
uint16_t port
Definition: dsdv-manet.cc:44
a polymophic address class
Definition: address.h:86
void EnablePcapAll(std::string prefix, bool promiscuous=false)
Enable pcap output on each device (which is of the appropriate type) in the set of all nodes created ...
Hold an unsigned integer type.
Definition: uinteger.h:46
Ptr< Node > GetSpokeNode(uint32_t i) const
void Start(Time start)
Arrange for all of the Applications in this container to Start() at the Time given as a parameter...
Parse command-line arguments.
Definition: command-line.h:177
static void Destroy(void)
Every event scheduled by the Simulator::insertAtDestroy method is invoked.
Definition: simulator.cc:121
void SetDefault(std::string name, const AttributeValue &value)
Definition: config.cc:667
void SetChannelAttribute(std::string name, const AttributeValue &value)
Set an attribute value to be propagated to each Channel created by the helper.
hold objects of type ns3::Address
void Stop(Time stop)
Arrange for all of the Applications in this container to Stop() at the Time given as a parameter...
void AddValue(const std::string &name, const std::string &help, T &value)
Add a program argument, assigning to POD.
Definition: command-line.h:435
ApplicationContainer Install(NodeContainer c) const
Install an ns3::PacketSinkApplication on each node of the input container configured with all the att...
void Parse(int argc, char *argv[])
Parse the program arguments.
A helper class to make life easier while doing simple IPv4 address assignment in scripts.
void InstallStack(InternetStackHelper stack)
ApplicationContainer Install(NodeContainer c) const
Install an ns3::OnOffApplication on each node of the input container configured with all the attribut...
Ipv4Address GetHubIpv4Address(uint32_t i) const
void SetAttribute(std::string name, const AttributeValue &value)
Helper function used to set the underlying application attributes.