A Discrete-Event Network Simulator
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tap-csma.cc
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16 
17 // Network topology
18 //
19 // Packets sent to the device "thetap" on the Linux host will be sent to the
20 // tap bridge on node zero and then emitted onto the ns-3 simulated CSMA
21 // network. ARP will be used on the CSMA network to resolve MAC addresses.
22 // Packets destined for the CSMA device on node zero will be sent to the
23 // device "thetap" on the linux Host.
24 //
25 // +----------+
26 // | external |
27 // | Linux |
28 // | Host |
29 // | |
30 // | "thetap" |
31 // +----------+
32 // | n0 n1 n2 n3
33 // | +--------+ +--------+ +--------+ +--------+
34 // +-------| tap | | | | | | |
35 // | bridge | | | | | | |
36 // +--------+ +--------+ +--------+ +--------+
37 // | CSMA | | CSMA | | CSMA | | CSMA |
38 // +--------+ +--------+ +--------+ +--------+
39 // | | | |
40 // | | | |
41 // | | | |
42 // ===========================================
43 // CSMA LAN 10.1.1
44 //
45 // The CSMA device on node zero is: 10.1.1.1
46 // The CSMA device on node one is: 10.1.1.2
47 // The CSMA device on node two is: 10.1.1.3
48 // The CSMA device on node three is: 10.1.1.4
49 //
50 // Some simple things to do:
51 //
52 // 1) Ping one of the simulated nodes
53 //
54 // ./waf --run tap-csma&
55 // ping 10.1.1.2
56 //
57 #include <iostream>
58 #include <fstream>
59 
60 #include "ns3/core-module.h"
61 #include "ns3/network-module.h"
62 #include "ns3/wifi-module.h"
63 #include "ns3/csma-module.h"
64 #include "ns3/internet-module.h"
65 #include "ns3/ipv4-global-routing-helper.h"
66 #include "ns3/tap-bridge-module.h"
67 
68 using namespace ns3;
69 
70 NS_LOG_COMPONENT_DEFINE ("TapCsmaExample");
71 
72 int
73 main (int argc, char *argv[])
74 {
75  std::string mode = "ConfigureLocal";
76  std::string tapName = "thetap";
77 
78  CommandLine cmd;
79  cmd.AddValue ("mode", "Mode setting of TapBridge", mode);
80  cmd.AddValue ("tapName", "Name of the OS tap device", tapName);
81  cmd.Parse (argc, argv);
82 
83  GlobalValue::Bind ("SimulatorImplementationType", StringValue ("ns3::RealtimeSimulatorImpl"));
84  GlobalValue::Bind ("ChecksumEnabled", BooleanValue (true));
85 
86  NodeContainer nodes;
87  nodes.Create (4);
88 
89  CsmaHelper csma;
90  csma.SetChannelAttribute ("DataRate", DataRateValue (5000000));
91  csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
92 
93  NetDeviceContainer devices = csma.Install (nodes);
94 
95  InternetStackHelper stack;
96  stack.Install (nodes);
97 
98  Ipv4AddressHelper addresses;
99  addresses.SetBase ("10.1.1.0", "255.255.255.0");
100  Ipv4InterfaceContainer interfaces = addresses.Assign (devices);
101 
102  TapBridgeHelper tapBridge;
103  tapBridge.SetAttribute ("Mode", StringValue (mode));
104  tapBridge.SetAttribute ("DeviceName", StringValue (tapName));
105  tapBridge.Install (nodes.Get (0), devices.Get (0));
106 
107  csma.EnablePcapAll ("tap-csma", false);
108  Ipv4GlobalRoutingHelper::PopulateRoutingTables ();
109 
110  Simulator::Stop (Seconds (60.));
111  Simulator::Run ();
112  Simulator::Destroy ();
113 }