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fragmentation-ipv6-two-MTU.cc
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1 /* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2008-2009 Strasbourg University
4  * Copyright (c) 2013 Universita' di Firenze
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation;
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18  *
19  * Author: David Gross <gdavid.devel@gmail.com>
20  * Sebastien Vincent <vincent@clarinet.u-strasbg.fr>
21  * Modified by Tommaso Pecorella <tommaso.pecorella@unifi.it>
22  */
23 
24 // Network topology
25 // //
26 // // Src n0 r n1 Dst
27 // // | _ |
28 // // MTU ====|_|==== MTU
29 // // 5000 router 1500
30 // //
31 // // - Tracing of queues and packet receptions to file "fragmentation-ipv6-two-mtu.tr"
32 
33 #include <fstream>
34 #include "ns3/core-module.h"
35 #include "ns3/internet-module.h"
36 #include "ns3/csma-module.h"
37 #include "ns3/applications-module.h"
38 #include "ns3/ipv6-static-routing-helper.h"
39 
40 #include "ns3/ipv6-routing-table-entry.h"
41 
42 using namespace ns3;
43 
44 NS_LOG_COMPONENT_DEFINE ("FragmentationIpv6TwoMtuExample");
45 
46 int main (int argc, char** argv)
47 {
48  bool verbose = false;
49 
50  CommandLine cmd;
51  cmd.AddValue ("verbose", "turn on log components", verbose);
52  cmd.Parse (argc, argv);
53 
54  if (verbose)
55  {
56  LogComponentEnable ("Ipv6L3Protocol", LOG_LEVEL_ALL);
57  LogComponentEnable ("Icmpv6L4Protocol", LOG_LEVEL_ALL);
58  LogComponentEnable ("Ipv6StaticRouting", LOG_LEVEL_ALL);
59  LogComponentEnable ("Ipv6Interface", LOG_LEVEL_ALL);
60  LogComponentEnable ("Ping6Application", LOG_LEVEL_ALL);
61  }
62 
63  NS_LOG_INFO ("Create nodes.");
64  Ptr<Node> n0 = CreateObject<Node> ();
65  Ptr<Node> r = CreateObject<Node> ();
66  Ptr<Node> n1 = CreateObject<Node> ();
67 
68  NodeContainer net1 (n0, r);
69  NodeContainer net2 (r, n1);
70  NodeContainer all (n0, r, n1);
71 
72  NS_LOG_INFO ("Create IPv6 Internet Stack");
73  InternetStackHelper internetv6;
74  internetv6.Install (all);
75 
76  NS_LOG_INFO ("Create channels.");
77  CsmaHelper csma;
78  csma.SetChannelAttribute ("DataRate", DataRateValue (5000000));
79  csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
80  NetDeviceContainer d2 = csma.Install (net2);
81  csma.SetDeviceAttribute ("Mtu", UintegerValue (5000));
82  NetDeviceContainer d1 = csma.Install (net1);
83 
84  NS_LOG_INFO ("Create networks and assign IPv6 Addresses.");
85  Ipv6AddressHelper ipv6;
86  ipv6.SetBase (Ipv6Address ("2001:1::"), Ipv6Prefix (64));
87  Ipv6InterfaceContainer i1 = ipv6.Assign (d1);
88  i1.SetForwarding (1, true);
89  i1.SetDefaultRouteInAllNodes (1);
90  ipv6.SetBase (Ipv6Address ("2001:2::"), Ipv6Prefix (64));
91  Ipv6InterfaceContainer i2 = ipv6.Assign (d2);
92  i2.SetForwarding (0, true);
93  i2.SetDefaultRouteInAllNodes (0);
94 
95  Ipv6StaticRoutingHelper routingHelper;
96  Ptr<OutputStreamWrapper> routingStream = Create<OutputStreamWrapper> (&std::cout);
97  routingHelper.PrintRoutingTableAt (Seconds (0), n0, routingStream);
98 
99  /* Create a Ping6 application to send ICMPv6 echo request from n0 to n1 via r */
100  uint32_t packetSize = 4096;
101  uint32_t maxPacketCount = 5;
102  Time interPacketInterval = Seconds (1.0);
103  Ping6Helper ping6;
104 
105  ping6.SetLocal (i1.GetAddress (0, 1));
106  ping6.SetRemote (i2.GetAddress (1, 1));
107 
108  ping6.SetAttribute ("MaxPackets", UintegerValue (maxPacketCount));
109  ping6.SetAttribute ("Interval", TimeValue (interPacketInterval));
110  ping6.SetAttribute ("PacketSize", UintegerValue (packetSize));
111  ApplicationContainer apps = ping6.Install (net1.Get (0));
112  apps.Start (Seconds (2.0));
113  apps.Stop (Seconds (20.0));
114 
115  AsciiTraceHelper ascii;
116  csma.EnableAsciiAll (ascii.CreateFileStream ("fragmentation-ipv6-two-mtu.tr"));
117  csma.EnablePcapAll (std::string ("fragmentation-ipv6-two-mtu"), true);
118 
119  NS_LOG_INFO ("Run Simulation.");
120  Simulator::Run ();
121  Simulator::Destroy ();
122  NS_LOG_INFO ("Done.");
123 }
124