A Discrete-Event Network Simulator
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18// Network topology
20// n0
21// \ 5 Mb/s, 2ms
22// \ 1.5Mb/s, 10ms
23// n2 -------------------------n3
24// /
25// / 5 Mb/s, 2ms
26// n1
28// - all links are point-to-point links with indicated one-way BW/delay
29// - CBR/UDP flows from n0 to n3, and from n3 to n1
30// - FTP/TCP flow from n0 to n3, starting at time 1.2 to time 1.35 sec.
31// - UDP packet size of 210 bytes, with per-packet interval 0.00375 sec.
32// (i.e., DataRate of 448,000 bps)
33// - DropTail queues
34// - Tracing of queues and packet receptions to file "simple-global-routing.tr"
36#include "ns3/applications-module.h"
37#include "ns3/core-module.h"
38#include "ns3/flow-monitor-helper.h"
39#include "ns3/internet-module.h"
40#include "ns3/ipv4-global-routing-helper.h"
41#include "ns3/network-module.h"
42#include "ns3/point-to-point-module.h"
44#include <cassert>
45#include <fstream>
46#include <iostream>
47#include <string>
49using namespace ns3;
54main(int argc, char* argv[])
56 // Users may find it convenient to turn on explicit debugging
57 // for selected modules; the below lines suggest how to do this
58#if 0
59 LogComponentEnable ("SimpleGlobalRoutingExample", LOG_LEVEL_INFO);
62 // Set up some default values for the simulation. Use the
63 Config::SetDefault("ns3::OnOffApplication::PacketSize", UintegerValue(210));
64 Config::SetDefault("ns3::OnOffApplication::DataRate", StringValue("448kb/s"));
66 // DefaultValue::Bind ("DropTailQueue::m_maxPackets", 30);
68 // Allow the user to override any of the defaults and the above
69 // DefaultValue::Bind ()s at run-time, via command-line arguments
70 CommandLine cmd(__FILE__);
71 bool enableFlowMonitor = false;
72 cmd.AddValue("EnableMonitor", "Enable Flow Monitor", enableFlowMonitor);
73 cmd.Parse(argc, argv);
75 // Here, we will explicitly create four nodes. In more sophisticated
76 // topologies, we could configure a node factory.
77 NS_LOG_INFO("Create nodes.");
79 c.Create(4);
82 NodeContainer n3n2 = NodeContainer(c.Get(3), c.Get(2));
84 InternetStackHelper internet;
85 internet.Install(c);
87 // We create the channels first without any IP addressing information
88 NS_LOG_INFO("Create channels.");
90 p2p.SetDeviceAttribute("DataRate", StringValue("5Mbps"));
91 p2p.SetChannelAttribute("Delay", StringValue("2ms"));
96 p2p.SetDeviceAttribute("DataRate", StringValue("1500kbps"));
97 p2p.SetChannelAttribute("Delay", StringValue("10ms"));
98 NetDeviceContainer d3d2 = p2p.Install(n3n2);
100 // Later, we add IP addresses.
101 NS_LOG_INFO("Assign IP Addresses.");
103 ipv4.SetBase("", "");
106 ipv4.SetBase("", "");
109 ipv4.SetBase("", "");
110 Ipv4InterfaceContainer i3i2 = ipv4.Assign(d3d2);
112 // Create router nodes, initialize routing database and set up the routing
113 // tables in the nodes.
114 Ipv4GlobalRoutingHelper::PopulateRoutingTables();
116 // Create the OnOff application to send UDP datagrams of size
117 // 210 bytes at a rate of 448 Kb/s
118 NS_LOG_INFO("Create Applications.");
119 uint16_t port = 9; // Discard port (RFC 863)
120 OnOffHelper onoff("ns3::UdpSocketFactory",
122 onoff.SetConstantRate(DataRate("448kb/s"));
123 ApplicationContainer apps = onoff.Install(c.Get(0));
124 apps.Start(Seconds(1.0));
125 apps.Stop(Seconds(10.0));
127 // Create a packet sink to receive these packets
128 PacketSinkHelper sink("ns3::UdpSocketFactory",
129 Address(InetSocketAddress(Ipv4Address::GetAny(), port)));
130 apps = sink.Install(c.Get(3));
131 apps.Start(Seconds(1.0));
132 apps.Stop(Seconds(10.0));
134 // Create a similar flow from n3 to n1, starting at time 1.1 seconds
135 onoff.SetAttribute("Remote", AddressValue(InetSocketAddress(i1i2.GetAddress(0), port)));
136 apps = onoff.Install(c.Get(3));
137 apps.Start(Seconds(1.1));
138 apps.Stop(Seconds(10.0));
140 // Create a packet sink to receive these packets
141 apps = sink.Install(c.Get(1));
142 apps.Start(Seconds(1.1));
143 apps.Stop(Seconds(10.0));
145 AsciiTraceHelper ascii;
146 p2p.EnableAsciiAll(ascii.CreateFileStream("simple-global-routing.tr"));
147 p2p.EnablePcapAll("simple-global-routing");
149 // Flow Monitor
150 FlowMonitorHelper flowmonHelper;
151 if (enableFlowMonitor)
152 {
153 flowmonHelper.InstallAll();
154 }
156 NS_LOG_INFO("Run Simulation.");
157 Simulator::Stop(Seconds(11));
158 Simulator::Run();
159 NS_LOG_INFO("Done.");
161 if (enableFlowMonitor)
162 {
163 flowmonHelper.SerializeToXmlFile("simple-global-routing.flowmon", false, false);
164 }
166 Simulator::Destroy();
167 return 0;
Ipv4InterfaceContainer i0i2
IPv4 interface container i0 + i2.
NodeContainer n1n2
Nodecontainer n1 + n2.
Ipv4InterfaceContainer i1i2
IPv4 interface container i1 + i2.
NodeContainer n0n2
Nodecontainer n0 + n2.
a polymophic address class
Definition: address.h:100
AttributeValue implementation for Address.
holds a vector of ns3::Application pointers.
void Start(Time start)
Start all of the Applications in this container at the start time given as a parameter.
void Stop(Time stop)
Arrange for all of the Applications in this container to Stop() at the Time given as a parameter.
void EnableAsciiAll(std::string prefix)
Enable ascii trace output on each device (which is of the appropriate type) in the set of all nodes c...
Manage ASCII trace files for device models.
Definition: trace-helper.h:173
Ptr< OutputStreamWrapper > CreateFileStream(std::string filename, std::ios::openmode filemode=std::ios::out)
Create and initialize an output stream object we'll use to write the traced bits.
Parse command-line arguments.
Definition: command-line.h:232
Helper to enable IP flow monitoring on a set of Nodes.
Ptr< FlowMonitor > InstallAll()
Enable flow monitoring on all nodes.
void SerializeToXmlFile(std::string fileName, bool enableHistograms, bool enableProbes)
Same as SerializeToXmlStream, but writes to a file instead.
an Inet address class
aggregate IP/TCP/UDP functionality to existing Nodes.
void Install(std::string nodeName) const
Aggregate implementations of the ns3::Ipv4, ns3::Ipv6, ns3::Udp, and ns3::Tcp classes onto the provid...
A helper class to make life easier while doing simple IPv4 address assignment in scripts.
void SetBase(Ipv4Address network, Ipv4Mask mask, Ipv4Address base="")
Set the base network number, network mask and base address.
Ipv4InterfaceContainer Assign(const NetDeviceContainer &c)
Assign IP addresses to the net devices specified in the container based on the current network prefix...
holds a vector of std::pair of Ptr<Ipv4> and interface index.
Ipv4Address GetAddress(uint32_t i, uint32_t j=0) const
holds a vector of ns3::NetDevice pointers
keep track of a set of node pointers.
void Create(uint32_t n)
Create n nodes and append pointers to them to the end of this NodeContainer.
Ptr< Node > Get(uint32_t i) const
Get the Ptr<Node> stored in this container at a given index.
A helper to make it easier to instantiate an ns3::OnOffApplication on a set of nodes.
Definition: on-off-helper.h:44
A helper to make it easier to instantiate an ns3::PacketSinkApplication on a set of nodes.
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 ...
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.
void SetChannelAttribute(std::string name, const AttributeValue &value)
Set an attribute value to be propagated to each Channel created by the helper.
NetDeviceContainer Install(NodeContainer c)
Hold variables of type string.
Definition: string.h:56
Hold an unsigned integer type.
Definition: uinteger.h:45
uint16_t port
Definition: dsdv-manet.cc:45
void SetDefault(std::string name, const AttributeValue &value)
Definition: config.cc:891
Define a Log component with a specific name.
Definition: log.h:202
#define NS_LOG_INFO(msg)
Use NS_LOG to output a message of level LOG_INFO.
Definition: log.h:275
void(* DataRate)(DataRate oldValue, DataRate newValue)
TracedValue callback signature for DataRate.
Definition: data-rate.h:328
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition: nstime.h:1336
Every class exported by the ns3 library is enclosed in the ns3 namespace.
void LogComponentEnable(const char *name, LogLevel level)
Enable the logging output associated with that log component.
Definition: log.cc:296
LOG_INFO and above.
Definition: log.h:107
Definition: second.py:33
Ptr< PacketSink > sink
Pointer to the packet sink application.
Definition: wifi-tcp.cc:55