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static-routing-slash32.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * This program is free software; you can redistribute it and/or modify
4  * it under the terms of the GNU General Public License version 2 as
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10  * GNU General Public License for more details.
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13  * along with this program; if not, write to the Free Software
14  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
15  *
16  */
17 
18 // Test program for this 3-router scenario, using static routing
19 //
20 // (a.a.a.a/32)A<--x.x.x.0/30-->B<--y.y.y.0/30-->C(c.c.c.c/32)
21 
22 #include <iostream>
23 #include <fstream>
24 #include <string>
25 #include <cassert>
26 
27 #include "ns3/core-module.h"
28 #include "ns3/network-module.h"
29 #include "ns3/internet-module.h"
30 #include "ns3/point-to-point-module.h"
31 #include "ns3/csma-module.h"
32 #include "ns3/applications-module.h"
33 #include "ns3/ipv4-static-routing-helper.h"
34 
35 using namespace ns3;
36 
37 NS_LOG_COMPONENT_DEFINE ("StaticRoutingSlash32Test");
38 
39 int
40 main (int argc, char *argv[])
41 {
42 
43  // Allow the user to override any of the defaults and the above
44  // DefaultValue::Bind ()s at run-time, via command-line arguments
45  CommandLine cmd;
46  cmd.Parse (argc, argv);
47 
48  Ptr<Node> nA = CreateObject<Node> ();
49  Ptr<Node> nB = CreateObject<Node> ();
50  Ptr<Node> nC = CreateObject<Node> ();
51 
52  NodeContainer c = NodeContainer (nA, nB, nC);
53 
54  InternetStackHelper internet;
55  internet.Install (c);
56 
57  // Point-to-point links
58  NodeContainer nAnB = NodeContainer (nA, nB);
59  NodeContainer nBnC = NodeContainer (nB, nC);
60 
61  // We create the channels first without any IP addressing information
62  PointToPointHelper p2p;
63  p2p.SetDeviceAttribute ("DataRate", StringValue ("5Mbps"));
64  p2p.SetChannelAttribute ("Delay", StringValue ("2ms"));
65  NetDeviceContainer dAdB = p2p.Install (nAnB);
66 
67  NetDeviceContainer dBdC = p2p.Install (nBnC);;
68 
69  Ptr<CsmaNetDevice> deviceA = CreateObject<CsmaNetDevice> ();
70  deviceA->SetAddress (Mac48Address::Allocate ());
71  nA->AddDevice (deviceA);
72 
73  Ptr<CsmaNetDevice> deviceC = CreateObject<CsmaNetDevice> ();
74  deviceC->SetAddress (Mac48Address::Allocate ());
75  nC->AddDevice (deviceC);
76 
77  // Later, we add IP addresses.
78  Ipv4AddressHelper ipv4;
79  ipv4.SetBase ("10.1.1.0", "255.255.255.252");
80  Ipv4InterfaceContainer iAiB = ipv4.Assign (dAdB);
81 
82  ipv4.SetBase ("10.1.1.4", "255.255.255.252");
83  Ipv4InterfaceContainer iBiC = ipv4.Assign (dBdC);
84 
85  Ptr<Ipv4> ipv4A = nA->GetObject<Ipv4> ();
86  Ptr<Ipv4> ipv4B = nB->GetObject<Ipv4> ();
87  Ptr<Ipv4> ipv4C = nC->GetObject<Ipv4> ();
88 
89  int32_t ifIndexA = ipv4A->AddInterface (deviceA);
90  int32_t ifIndexC = ipv4C->AddInterface (deviceC);
91 
92  Ipv4InterfaceAddress ifInAddrA = Ipv4InterfaceAddress (Ipv4Address ("172.16.1.1"), Ipv4Mask ("/32"));
93  ipv4A->AddAddress (ifIndexA, ifInAddrA);
94  ipv4A->SetMetric (ifIndexA, 1);
95  ipv4A->SetUp (ifIndexA);
96 
97  Ipv4InterfaceAddress ifInAddrC = Ipv4InterfaceAddress (Ipv4Address ("192.168.1.1"), Ipv4Mask ("/32"));
98  ipv4C->AddAddress (ifIndexC, ifInAddrC);
99  ipv4C->SetMetric (ifIndexC, 1);
100  ipv4C->SetUp (ifIndexC);
101 
102  Ipv4StaticRoutingHelper ipv4RoutingHelper;
103  // Create static routes from A to C
104  Ptr<Ipv4StaticRouting> staticRoutingA = ipv4RoutingHelper.GetStaticRouting (ipv4A);
105  // The ifIndex for this outbound route is 1; the first p2p link added
106  staticRoutingA->AddHostRouteTo (Ipv4Address ("192.168.1.1"), Ipv4Address ("10.1.1.2"), 1);
107  Ptr<Ipv4StaticRouting> staticRoutingB = ipv4RoutingHelper.GetStaticRouting (ipv4B);
108  // The ifIndex we want on node B is 2; 0 corresponds to loopback, and 1 to the first point to point link
109  staticRoutingB->AddHostRouteTo (Ipv4Address ("192.168.1.1"), Ipv4Address ("10.1.1.6"), 2);
110  // Create the OnOff application to send UDP datagrams of size
111  // 210 bytes at a rate of 448 Kb/s
112  uint16_t port = 9; // Discard port (RFC 863)
113  OnOffHelper onoff ("ns3::UdpSocketFactory",
114  Address (InetSocketAddress (ifInAddrC.GetLocal (), port)));
115  onoff.SetConstantRate (DataRate (6000));
116  ApplicationContainer apps = onoff.Install (nA);
117  apps.Start (Seconds (1.0));
118  apps.Stop (Seconds (10.0));
119 
120  // Create a packet sink to receive these packets
121  PacketSinkHelper sink ("ns3::UdpSocketFactory",
122  Address (InetSocketAddress (Ipv4Address::GetAny (), port)));
123  apps = sink.Install (nC);
124  apps.Start (Seconds (1.0));
125  apps.Stop (Seconds (10.0));
126 
127  AsciiTraceHelper ascii;
128  p2p.EnableAsciiAll (ascii.CreateFileStream ("static-routing-slash32.tr"));
129  p2p.EnablePcapAll ("static-routing-slash32");
130 
131  Simulator::Run ();
132  Simulator::Destroy ();
133 
134  return 0;
135 }