author | Gustavo J. A. M. Carneiro <gjc@inescporto.pt> |
Fri, 11 Jul 2008 18:39:19 +0100 | |
changeset 3416 | 926ccb845111 |
parent 3381 | 3cdd9d60f7c7 |
child 3536 | 087b1b45b3b5 |
permissions | -rw-r--r-- |
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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ |
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/* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation; |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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*/ |
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|
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// |
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// This ns-3 example demonstrates the use of helper functions to ease |
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// the construction of simulation scenarios. |
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// |
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// The simulation topology consists of a mixed wired and wireless |
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// scenario in which a hierarchical mobility model is used. |
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// |
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// The simulation layout consists of N backbone routers interconnected |
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// by an ad hoc wifi network. |
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// Each backbone router also has a local 802.11 network and is connected |
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// to a local LAN. An additional set of (K-1) nodes are connected to |
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// this backbone. Finally, a local LAN is connected to each router |
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// on the backbone, with L-1 additional hosts. |
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// |
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// The nodes are populated with TCP/IP stacks, and OLSR unicast routing |
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// on the backbone. An example UDP transfer is shown. The simulator |
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// be configured to output tcpdumps or traces from different nodes. |
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// |
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// |
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// +--------------------------------------------------------+ |
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// | | |
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// | 802.11 ad hoc, ns-2 mobility | |
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// | | |
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// +--------------------------------------------------------+ |
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// | o o o (N backbone routers) | |
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// +--------+ +--------+ |
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// wired LAN | mobile | wired LAN | mobile | |
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// -----------| router | -----------| router | |
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// --------- --------- |
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// | | |
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// +----------------+ +----------------+ |
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// | 802.11 | | 802.11 | |
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// | net | | net | |
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// | K-1 hosts | | K-1 hosts | |
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// +----------------+ +----------------+ |
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// |
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#include <fstream> |
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#include "ns3/core-module.h" |
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#include "ns3/common-module.h" |
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#include "ns3/node-module.h" |
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#include "ns3/helper-module.h" |
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#include "ns3/mobility-module.h" |
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#include "ns3/contrib-module.h" |
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#include "ns3/wifi-module.h" |
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using namespace ns3; |
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// |
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// Define logging keyword for this file |
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// |
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NS_LOG_COMPONENT_DEFINE ("MixedWireless"); |
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// |
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// This function will be used below as a trace sink |
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// |
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#ifdef ENABLE_FOR_TRACING_EXAMPLE |
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static void |
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CourseChangeCallback (std::string path, Ptr<const MobilityModel> model) |
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{ |
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Vector position = model->GetPosition (); |
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std::cout << "CourseChange " << path << " x=" << position.x << ", y=" << position.y << ", z=" << position.z << std::endl; |
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} |
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#endif |
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int |
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main (int argc, char *argv[]) |
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{ |
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// |
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// First, we declare and initialize a few local variables that control some |
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// simulation parameters. |
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// |
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uint32_t backboneNodes = 10; |
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uint32_t infraNodes = 5; |
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uint32_t lanNodes = 5; |
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uint32_t stopTime = 10; |
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// |
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// Simulation defaults are typically set next, before command line |
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// arguments are parsed. |
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// |
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Config::SetDefault ("ns3::OnOffApplication::PacketSize", StringValue ("210")); |
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Config::SetDefault ("ns3::OnOffApplication::DataRate", StringValue ("448kb/s")); |
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// |
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// For convenience, we add the local variables to the command line argument |
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// system so that they can be overridden with flags such as |
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// "--backboneNodes=20" |
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// |
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CommandLine cmd; |
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cmd.AddValue("backboneNodes", "number of backbone nodes", backboneNodes); |
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cmd.AddValue ("infraNodes", "number of leaf nodes", infraNodes); |
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cmd.AddValue("lanNodes", "number of LAN nodes", lanNodes); |
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cmd.AddValue("stopTime", "simulation stop time (seconds)", stopTime); |
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// |
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// The system global variables and the local values added to the argument |
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// system can be overridden by command line arguments by using this call. |
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// |
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cmd.Parse (argc, argv); |
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// The metadata system (off by default) is used by ascii tracing below |
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Packet::EnableMetadata (); |
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/////////////////////////////////////////////////////////////////////////// |
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// // |
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// Construct the backbone // |
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// // |
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/////////////////////////////////////////////////////////////////////////// |
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|
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// |
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// Create a container to manage the nodes of the adhoc (backbone) network. |
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// Later we'll create the rest of the nodes we'll need. |
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// |
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NodeContainer backbone; |
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backbone.Create (backboneNodes); |
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// |
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// Create the backbone wifi net devices and install them into the nodes in |
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// our container |
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// |
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WifiHelper wifi; |
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wifi.SetMac ("ns3::AdhocWifiMac"); |
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wifi.SetPhy ("ns3::WifiPhy"); |
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NetDeviceContainer backboneDevices = wifi.Install (backbone); |
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// |
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// Add the IPv4 protocol stack to the nodes in our container |
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// |
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InternetStackHelper internet; |
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internet.Install (backbone); |
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// |
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// Assign IPv4 addresses to the device drivers (actually to the associated |
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// IPv4 interfaces) we just created. |
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// |
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Ipv4AddressHelper ipAddrs; |
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ipAddrs.SetBase ("192.168.0.0", "255.255.255.0"); |
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ipAddrs.Assign (backboneDevices); |
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|
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// |
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// The ad-hoc network nodes need a mobility model so we aggregate one to |
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// each of the nodes we just finished building. |
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// |
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MobilityHelper mobility; |
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Ptr<ListPositionAllocator> positionAlloc = |
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CreateObject<ListPositionAllocator> (); |
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double x = 0.0; |
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for (uint32_t i = 0; i < backboneNodes; ++i) |
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{ |
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positionAlloc->Add (Vector (x, 0.0, 0.0)); |
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x += 5.0; |
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} |
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mobility.SetPositionAllocator (positionAlloc); |
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mobility.SetMobilityModel ("ns3::RandomDirection2dMobilityModel", |
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"Bounds", RectangleValue (Rectangle (0, 1000, 0, 1000)), |
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"Speed", RandomVariableValue (ConstantVariable (2000)), |
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"Pause", RandomVariableValue (ConstantVariable (0.2))); |
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mobility.Install (backbone); |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// // |
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// Construct the LANs // |
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// // |
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/////////////////////////////////////////////////////////////////////////// |
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|
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// Reset the address base-- all of the CSMA networks will be in |
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// the "172.16 address space |
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ipAddrs.SetBase ("172.16.0.0", "255.255.255.0"); |
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184 |
|
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185 |
|
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for (uint32_t i = 0; i < backboneNodes; ++i) |
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{ |
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NS_LOG_INFO ("Configuring local area network for backbone node " << i); |
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// |
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// Create a container to manage the nodes of the LAN. We need |
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// two containers here; one with all of the new nodes, and one |
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// with all of the nodes including new and existing nodes |
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// |
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NodeContainer newLanNodes; |
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newLanNodes.Create (lanNodes - 1); |
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// Now, create the container with all nodes on this link |
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NodeContainer lan (backbone.Get (i), newLanNodes); |
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// |
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// Create the CSMA net devices and install them into the nodes in our |
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// collection. |
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// |
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CsmaHelper csma; |
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csma.SetChannelAttribute ("DataRate", |
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DataRateValue (DataRate (5000000))); |
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csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2))); |
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NetDeviceContainer lanDevices = csma.Install (lan); |
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// |
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// Add the IPv4 protocol stack to the new LAN nodes |
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// |
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internet.Install (newLanNodes); |
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// |
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// Assign IPv4 addresses to the device drivers (actually to the |
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// associated IPv4 interfaces) we just created. |
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// |
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ipAddrs.Assign (lanDevices); |
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// |
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// Assign a new network prefix for the next LAN, according to the |
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// network mask initialized above |
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// |
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ipAddrs.NewNetwork (); |
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221 |
} |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// // |
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// Construct the mobile networks // |
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226 |
// // |
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/////////////////////////////////////////////////////////////////////////// |
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|
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// Reset the address base-- all of the 802.11 networks will be in |
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230 |
// the "10.0" address space |
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231 |
ipAddrs.SetBase ("10.0.0.0", "255.255.255.0"); |
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232 |
|
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233 |
for (uint32_t i = 0; i < backboneNodes; ++i) |
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234 |
{ |
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NS_LOG_INFO ("Configuring wireless network for backbone node " << i); |
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// |
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// Create a container to manage the nodes of the LAN. We need |
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// two containers here; one with all of the new nodes, and one |
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// with all of the nodes including new and existing nodes |
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// |
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NodeContainer newInfraNodes; |
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newInfraNodes.Create (infraNodes - 1); |
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// Now, create the container with all nodes on this link |
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NodeContainer infra (backbone.Get (i), newInfraNodes); |
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// |
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// Create another ad hoc network and devices |
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// |
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WifiHelper wifiInfra; |
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wifiInfra.SetMac ("ns3::AdhocWifiMac"); |
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wifiInfra.SetPhy ("ns3::WifiPhy"); |
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NetDeviceContainer infraDevices = wifiInfra.Install (infra); |
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|
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// Add the IPv4 protocol stack to the nodes in our container |
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// |
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internet.Install (newInfraNodes); |
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// |
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// Assign IPv4 addresses to the device drivers (actually to the associated |
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// IPv4 interfaces) we just created. |
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// |
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ipAddrs.Assign (infraDevices); |
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// |
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// Assign a new network prefix for each mobile network, according to |
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// the network mask initialized above |
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// |
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ipAddrs.NewNetwork (); |
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// |
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// The new wireless nodes need a mobility model so we aggregate one |
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// to each of the nodes we just finished building. |
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// |
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Ptr<ListPositionAllocator> subnetAlloc = |
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CreateObject<ListPositionAllocator> (); |
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for (uint32_t j = 0; j < infra.GetN (); ++j) |
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{ |
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subnetAlloc->Add (Vector (0.0, j, 0.0)); |
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} |
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mobility.PushReferenceMobilityModel (backbone.Get (i)); |
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mobility.SetPositionAllocator (subnetAlloc); |
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mobility.SetMobilityModel ("ns3::RandomDirection2dMobilityModel", |
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"Bounds", RectangleValue (Rectangle (-25, 25, -25, 25)), |
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"Speed", RandomVariableValue (ConstantVariable (30)), |
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"Pause", RandomVariableValue (ConstantVariable (0.4))); |
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mobility.Install (infra); |
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} |
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/////////////////////////////////////////////////////////////////////////// |
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// // |
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// Routing configuration // |
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// // |
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/////////////////////////////////////////////////////////////////////////// |
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|
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NS_LOG_INFO ("Enabling OLSR routing on all backbone nodes"); |
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OlsrHelper olsr; |
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olsr.Install (backbone); |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// // |
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// Application configuration // |
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// // |
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/////////////////////////////////////////////////////////////////////////// |
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|
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// Create the OnOff application to send UDP datagrams of size |
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// 210 bytes at a rate of 448 Kb/s, between two nodes |
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NS_LOG_INFO ("Create Applications."); |
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uint16_t port = 9; // Discard port (RFC 863) |
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|
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// Let's make sure that the user does not define too few LAN nodes |
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// to make this example work. We need lanNodes >= 5 |
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NS_ASSERT (lanNodes >= 5); |
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Ptr<Node> appSource = NodeList::GetNode (11); |
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Ptr<Node> appSink = NodeList::GetNode (13); |
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Ipv4Address remoteAddr = Ipv4Address ("172.16.0.5"); |
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|
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OnOffHelper onoff ("ns3::UdpSocketFactory", |
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Address (InetSocketAddress (remoteAddr, port))); |
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onoff.SetAttribute ("OnTime", RandomVariableValue (ConstantVariable (1))); |
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onoff.SetAttribute ("OffTime", RandomVariableValue (ConstantVariable (0))); |
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ApplicationContainer apps = onoff.Install (appSource); |
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apps.Start (Seconds (3.0)); |
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apps.Stop (Seconds (20.0)); |
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|
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// Create a packet sink to receive these packets |
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PacketSinkHelper sink ("ns3::UdpSocketFactory", |
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InetSocketAddress (Ipv4Address::GetAny (), port)); |
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apps = sink.Install (appSink); |
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apps.Start (Seconds (3.0)); |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// // |
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// Tracing configuration // |
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// // |
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/////////////////////////////////////////////////////////////////////////// |
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|
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NS_LOG_INFO ("Configure Tracing."); |
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// |
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// Let's set up some ns-2-like ascii traces, using another helper class |
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// |
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std::ofstream ascii; |
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ascii.open ("mixed-wireless.tr"); |
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EnablePcap()->EnablePcapAll(); EnableAscii()->EnableAsciiAll()
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WifiHelper::EnableAsciiAll (ascii); |
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CsmaHelper::EnableAsciiAll (ascii); |
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// Look at nodes 11, 13 only |
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//WifiHelper::EnableAscii (ascii, 11, 0); |
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//WifiHelper::EnableAscii (ascii, 13, 0); |
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|
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// Let's do a pcap trace on the backbone devices |
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WifiHelper::EnablePcap ("mixed-wireless", backboneDevices); |
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// Let's additionally trace the application Sink, ifIndex 0 |
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CsmaHelper::EnablePcap ("mixed-wireless", appSink->GetId (), 0); |
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|
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#ifdef ENABLE_FOR_TRACING_EXAMPLE |
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Config::Connect ("/NodeList/*/$MobilityModel/CourseChange", |
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MakeCallback (&CourseChangeCallback)); |
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#endif |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// // |
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// Run simulation // |
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// // |
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/////////////////////////////////////////////////////////////////////////// |
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|
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NS_LOG_INFO ("Run Simulation."); |
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Simulator::Stop (Seconds (stopTime)); |
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Simulator::Run (); |
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Simulator::Destroy (); |
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} |