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mixed-global-routing.cc
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17 
18 // This script exercises global routing code in a mixed point-to-point
19 // and csma/cd environment
20 //
21 // Network topology
22 //
23 // n0
24 // \ p-p
25 // \ (shared csma/cd)
26 // n2 -------------------------n3
27 // / | |
28 // / p-p n4 n5 ---------- n6
29 // n1 p-p
30 //
31 // - CBR/UDP flows from n0 to n6
32 // - Tracing of queues and packet receptions to file "mixed-global-routing.tr"
33 
34 #include <iostream>
35 #include <fstream>
36 #include <string>
37 #include <cassert>
38 
39 #include "ns3/core-module.h"
40 #include "ns3/network-module.h"
41 #include "ns3/point-to-point-module.h"
42 #include "ns3/csma-module.h"
43 #include "ns3/applications-module.h"
44 #include "ns3/internet-module.h"
45 
46 using namespace ns3;
47 
48 NS_LOG_COMPONENT_DEFINE ("MixedGlobalRoutingExample");
49 
50 int
51 main (int argc, char *argv[])
52 {
53  Config::SetDefault ("ns3::OnOffApplication::PacketSize", UintegerValue (210));
54  Config::SetDefault ("ns3::OnOffApplication::DataRate", StringValue ("448kb/s"));
55 
56  // Allow the user to override any of the defaults and the above
57  // Bind ()s at run-time, via command-line arguments
58  CommandLine cmd;
59  cmd.Parse (argc, argv);
60 
61  NS_LOG_INFO ("Create nodes.");
62  NodeContainer c;
63  c.Create (7);
64  NodeContainer n0n2 = NodeContainer (c.Get (0), c.Get (2));
65  NodeContainer n1n2 = NodeContainer (c.Get (1), c.Get (2));
66  NodeContainer n5n6 = NodeContainer (c.Get (5), c.Get (6));
67  NodeContainer n2345 = NodeContainer (c.Get (2), c.Get (3), c.Get (4), c.Get (5));
68 
69  InternetStackHelper internet;
70  internet.Install (c);
71 
72  // We create the channels first without any IP addressing information
73  NS_LOG_INFO ("Create channels.");
74  PointToPointHelper p2p;
75  p2p.SetDeviceAttribute ("DataRate", StringValue ("5Mbps"));
76  p2p.SetChannelAttribute ("Delay", StringValue ("2ms"));
77  NetDeviceContainer d0d2 = p2p.Install (n0n2);
78 
79  NetDeviceContainer d1d2 = p2p.Install (n1n2);
80 
81  p2p.SetDeviceAttribute ("DataRate", StringValue ("1500kbps"));
82  p2p.SetChannelAttribute ("Delay", StringValue ("10ms"));
83  NetDeviceContainer d5d6 = p2p.Install (n5n6);
84 
85  // We create the channels first without any IP addressing information
86  CsmaHelper csma;
87  csma.SetChannelAttribute ("DataRate", StringValue ("5Mbps"));
88  csma.SetChannelAttribute ("Delay", StringValue ("2ms"));
89  NetDeviceContainer d2345 = csma.Install (n2345);
90 
91  // Later, we add IP addresses.
92  NS_LOG_INFO ("Assign IP Addresses.");
93  Ipv4AddressHelper ipv4;
94  ipv4.SetBase ("10.1.1.0", "255.255.255.0");
95  ipv4.Assign (d0d2);
96 
97  ipv4.SetBase ("10.1.2.0", "255.255.255.0");
98  ipv4.Assign (d1d2);
99 
100  ipv4.SetBase ("10.1.3.0", "255.255.255.0");
101  Ipv4InterfaceContainer i5i6 = ipv4.Assign (d5d6);
102 
103  ipv4.SetBase ("10.250.1.0", "255.255.255.0");
104  ipv4.Assign (d2345);
105 
106  // Create router nodes, initialize routing database and set up the routing
107  // tables in the nodes.
108  Ipv4GlobalRoutingHelper::PopulateRoutingTables ();
109 
110  // Create the OnOff application to send UDP datagrams of size
111  // 210 bytes at a rate of 448 Kb/s
112  NS_LOG_INFO ("Create Applications.");
113  uint16_t port = 9; // Discard port (RFC 863)
114  OnOffHelper onoff ("ns3::UdpSocketFactory",
115  InetSocketAddress (i5i6.GetAddress (1), port));
116  onoff.SetConstantRate (DataRate ("300bps"));
117  onoff.SetAttribute ("PacketSize", UintegerValue (50));
118 
119  ApplicationContainer apps = onoff.Install (c.Get (0));
120  apps.Start (Seconds (1.0));
121  apps.Stop (Seconds (10.0));
122 
123  AsciiTraceHelper ascii;
124  Ptr<OutputStreamWrapper> stream = ascii.CreateFileStream ("mixed-global-routing.tr");
125  p2p.EnableAsciiAll (stream);
126  csma.EnableAsciiAll (stream);
127 
128  p2p.EnablePcapAll ("mixed-global-routing");
129  csma.EnablePcapAll ("mixed-global-routing", false);
130 
131  NS_LOG_INFO ("Run Simulation.");
132  Simulator::Run ();
133  Simulator::Destroy ();
134  NS_LOG_INFO ("Done.");
135 }