A Discrete-Event Network Simulator
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fragmentation-ipv6-two-MTU.cc
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1 /*
2  * Copyright (c) 2008-2009 Strasbourg University
3  * Copyright (c) 2013 Universita' di Firenze
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: David Gross <gdavid.devel@gmail.com>
19  * Sebastien Vincent <vincent@clarinet.u-strasbg.fr>
20  * Modified by Tommaso Pecorella <tommaso.pecorella@unifi.it>
21  */
22 
23 // Network topology
24 // //
25 // // Src n0 r n1 Dst
26 // // | _ |
27 // // MTU ====|_|==== MTU
28 // // 5000 router 1500
29 // //
30 // // - Tracing of queues and packet receptions to file "fragmentation-ipv6-two-mtu.tr"
31 
32 #include "ns3/applications-module.h"
33 #include "ns3/core-module.h"
34 #include "ns3/csma-module.h"
35 #include "ns3/internet-module.h"
36 #include "ns3/ipv6-routing-table-entry.h"
37 #include "ns3/ipv6-static-routing-helper.h"
38 
39 #include <fstream>
40 
41 using namespace ns3;
42 
43 NS_LOG_COMPONENT_DEFINE("FragmentationIpv6TwoMtuExample");
44 
45 int
46 main(int argc, char** argv)
47 {
48  bool verbose = false;
49 
50  CommandLine cmd(__FILE__);
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("UdpEchoClientApplication", LOG_LEVEL_ALL);
61  LogComponentEnable("UdpEchoServerApplication", LOG_LEVEL_ALL);
62  }
63  LogComponentEnable("UdpEchoClientApplication", LOG_LEVEL_INFO);
64 
65  NS_LOG_INFO("Create nodes.");
66  Ptr<Node> n0 = CreateObject<Node>();
67  Ptr<Node> r = CreateObject<Node>();
68  Ptr<Node> n1 = CreateObject<Node>();
69 
70  NodeContainer net1(n0, r);
71  NodeContainer net2(r, n1);
72  NodeContainer all(n0, r, n1);
73 
74  NS_LOG_INFO("Create IPv6 Internet Stack");
75  InternetStackHelper internetv6;
76  internetv6.Install(all);
77 
78  NS_LOG_INFO("Create channels.");
80  csma.SetChannelAttribute("DataRate", DataRateValue(5000000));
81  csma.SetChannelAttribute("Delay", TimeValue(MilliSeconds(2)));
82  NetDeviceContainer d2 = csma.Install(net2);
83  csma.SetDeviceAttribute("Mtu", UintegerValue(5000));
84  NetDeviceContainer d1 = csma.Install(net1);
85 
86  NS_LOG_INFO("Create networks and assign IPv6 Addresses.");
87  Ipv6AddressHelper ipv6;
88  ipv6.SetBase(Ipv6Address("2001:1::"), Ipv6Prefix(64));
89  Ipv6InterfaceContainer i1 = ipv6.Assign(d1);
90  i1.SetForwarding(1, true);
92  ipv6.SetBase(Ipv6Address("2001:2::"), Ipv6Prefix(64));
93  Ipv6InterfaceContainer i2 = ipv6.Assign(d2);
94  i2.SetForwarding(0, true);
96 
97  Ptr<OutputStreamWrapper> routingStream = Create<OutputStreamWrapper>(&std::cout);
98  Ipv6RoutingHelper::PrintRoutingTableAt(Seconds(0), n0, routingStream);
99 
100  /* Create a UdpEchoClient and UdpEchoServer application to send packets from n0 to n1 via r */
101  uint32_t packetSize = 4096;
102  uint32_t maxPacketCount = 5;
103 
105  echoClient.SetAttribute("PacketSize", UintegerValue(packetSize));
106  echoClient.SetAttribute("MaxPackets", UintegerValue(maxPacketCount));
107  ApplicationContainer clientApps = echoClient.Install(net1.Get(0));
108  clientApps.Start(Seconds(2.0));
109  clientApps.Stop(Seconds(20.0));
110 
112  ApplicationContainer serverApps = echoServer.Install(net2.Get(1));
113  serverApps.Start(Seconds(0.0));
114  serverApps.Stop(Seconds(30.0));
115 
116  AsciiTraceHelper ascii;
117  csma.EnableAsciiAll(ascii.CreateFileStream("fragmentation-ipv6-two-mtu.tr"));
118  csma.EnablePcapAll(std::string("fragmentation-ipv6-two-mtu"), true);
119 
120  NS_LOG_INFO("Run Simulation.");
121  Simulator::Run();
123  NS_LOG_INFO("Done.");
124 
125  return 0;
126 }
holds a vector of ns3::Application pointers.
Manage ASCII trace files for device models.
Definition: trace-helper.h:174
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
build a set of CsmaNetDevice objects
Definition: csma-helper.h:48
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...
Helper class to auto-assign global IPv6 unicast addresses.
void SetBase(Ipv6Address network, Ipv6Prefix prefix, Ipv6Address base=Ipv6Address("::1"))
Set the base network number, network prefix, and base interface ID.
Ipv6InterfaceContainer Assign(const NetDeviceContainer &c)
Allocate an Ipv6InterfaceContainer with auto-assigned addresses.
Describes an IPv6 address.
Definition: ipv6-address.h:49
Keep track of a set of IPv6 interfaces.
void SetForwarding(uint32_t i, bool state)
Set the state of the stack (act as a router or as an host) for the specified index.
void SetDefaultRouteInAllNodes(uint32_t router)
Set the default route for all the devices (except the router itself).
Ipv6Address GetAddress(uint32_t i, uint32_t j) const
Get the address for the specified index.
Describes an IPv6 prefix.
Definition: ipv6-address.h:455
static void PrintRoutingTableAt(Time printTime, Ptr< Node > node, Ptr< OutputStreamWrapper > stream, Time::Unit unit=Time::S)
prints the routing tables of a node at a particular time.
holds a vector of ns3::NetDevice pointers
keep track of a set of node pointers.
static void Destroy()
Execute the events scheduled with ScheduleDestroy().
Definition: simulator.cc:142
static void Run()
Run the simulation.
Definition: simulator.cc:178
Create an application which sends a UDP packet and waits for an echo of this packet.
Create a server application which waits for input UDP packets and sends them back to the original sen...
Hold an unsigned integer type.
Definition: uinteger.h:45
#define NS_LOG_COMPONENT_DEFINE(name)
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
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition: nstime.h:1326
Time MilliSeconds(uint64_t value)
Construct a Time in the indicated unit.
Definition: nstime.h:1338
echoClient
Definition: first.py:59
serverApps
Definition: first.py:54
echoServer
Definition: first.py:52
clientApps
Definition: first.py:64
Every class exported by the ns3 library is enclosed in the ns3 namespace.
void LogComponentEnable(const std::string &name, LogLevel level)
Enable the logging output associated with that log component.
Definition: log.cc:302
@ LOG_LEVEL_ALL
Print everything.
Definition: log.h:116
@ LOG_LEVEL_INFO
LOG_INFO and above.
Definition: log.h:104
csma
Definition: second.py:63
cmd
Definition: second.py:40
bool verbose
static const uint32_t packetSize
Packet size generated at the AP.