A Discrete-Event Network Simulator
API
wifi-wired-bridging.cc
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1/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2/*
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5 * published by the Free Software Foundation;
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9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// Default network topology includes some number of AP nodes specified by
18// the variable nWifis (defaults to two). Off of each AP node, there are some
19// number of STA nodes specified by the variable nStas (defaults to two).
20// Each AP talks to its associated STA nodes. There are bridge net devices
21// on each AP node that bridge the whole thing into one network.
22//
23// +-----+ +-----+ +-----+ +-----+
24// | STA | | STA | | STA | | STA |
25// +-----+ +-----+ +-----+ +-----+
26// 192.168.0.2 192.168.0.3 192.168.0.5 192.168.0.6
27// -------- -------- -------- --------
28// WIFI STA WIFI STA WIFI STA WIFI STA
29// -------- -------- -------- --------
30// ((*)) ((*)) | ((*)) ((*))
31// |
32// ((*)) | ((*))
33// ------- -------
34// WIFI AP CSMA ========= CSMA WIFI AP
35// ------- ---- ---- -------
36// ############## ##############
37// BRIDGE BRIDGE
38// ############## ##############
39// 192.168.0.1 192.168.0.4
40// +---------+ +---------+
41// | AP Node | | AP Node |
42// +---------+ +---------+
43
44#include "ns3/command-line.h"
45#include "ns3/double.h"
46#include "ns3/uinteger.h"
47#include "ns3/rectangle.h"
48#include "ns3/string.h"
49#include "ns3/yans-wifi-helper.h"
50#include "ns3/ssid.h"
51#include "ns3/mobility-helper.h"
52#include "ns3/internet-stack-helper.h"
53#include "ns3/ipv4-address-helper.h"
54#include "ns3/on-off-helper.h"
55#include "ns3/yans-wifi-channel.h"
56#include "ns3/csma-helper.h"
57#include "ns3/bridge-helper.h"
58#include "ns3/packet-socket-address.h"
59
60using namespace ns3;
61
62int main (int argc, char *argv[])
63{
64 uint32_t nWifis = 2;
65 uint32_t nStas = 2;
66 bool sendIp = true;
67 bool writeMobility = false;
68
69 CommandLine cmd (__FILE__);
70 cmd.AddValue ("nWifis", "Number of wifi networks", nWifis);
71 cmd.AddValue ("nStas", "Number of stations per wifi network", nStas);
72 cmd.AddValue ("SendIp", "Send Ipv4 or raw packets", sendIp);
73 cmd.AddValue ("writeMobility", "Write mobility trace", writeMobility);
74 cmd.Parse (argc, argv);
75
76 NodeContainer backboneNodes;
77 NetDeviceContainer backboneDevices;
78 Ipv4InterfaceContainer backboneInterfaces;
79 std::vector<NodeContainer> staNodes;
80 std::vector<NetDeviceContainer> staDevices;
81 std::vector<NetDeviceContainer> apDevices;
82 std::vector<Ipv4InterfaceContainer> staInterfaces;
83 std::vector<Ipv4InterfaceContainer> apInterfaces;
84
88 ip.SetBase ("192.168.0.0", "255.255.255.0");
89
90 backboneNodes.Create (nWifis);
91 stack.Install (backboneNodes);
92
93 backboneDevices = csma.Install (backboneNodes);
94
95 double wifiX = 0.0;
96
97 YansWifiPhyHelper wifiPhy;
98 wifiPhy.SetPcapDataLinkType (WifiPhyHelper::DLT_IEEE802_11_RADIO);
99
100 for (uint32_t i = 0; i < nWifis; ++i)
101 {
102 // calculate ssid for wifi subnetwork
103 std::ostringstream oss;
104 oss << "wifi-default-" << i;
105 Ssid ssid = Ssid (oss.str ());
106
107 NodeContainer sta;
108 NetDeviceContainer staDev;
109 NetDeviceContainer apDev;
110 Ipv4InterfaceContainer staInterface;
111 Ipv4InterfaceContainer apInterface;
113 BridgeHelper bridge;
115 WifiMacHelper wifiMac;
116 YansWifiChannelHelper wifiChannel = YansWifiChannelHelper::Default ();
117 wifiPhy.SetChannel (wifiChannel.Create ());
118
119 sta.Create (nStas);
120 mobility.SetPositionAllocator ("ns3::GridPositionAllocator",
121 "MinX", DoubleValue (wifiX),
122 "MinY", DoubleValue (0.0),
123 "DeltaX", DoubleValue (5.0),
124 "DeltaY", DoubleValue (5.0),
125 "GridWidth", UintegerValue (1),
126 "LayoutType", StringValue ("RowFirst"));
127
128 // setup the AP.
129 mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
130 mobility.Install (backboneNodes.Get (i));
131 wifiMac.SetType ("ns3::ApWifiMac",
132 "Ssid", SsidValue (ssid));
133 apDev = wifi.Install (wifiPhy, wifiMac, backboneNodes.Get (i));
134
135 NetDeviceContainer bridgeDev;
136 bridgeDev = bridge.Install (backboneNodes.Get (i), NetDeviceContainer (apDev, backboneDevices.Get (i)));
137
138 // assign AP IP address to bridge, not wifi
139 apInterface = ip.Assign (bridgeDev);
140
141 // setup the STAs
142 stack.Install (sta);
143 mobility.SetMobilityModel ("ns3::RandomWalk2dMobilityModel",
144 "Mode", StringValue ("Time"),
145 "Time", StringValue ("2s"),
146 "Speed", StringValue ("ns3::ConstantRandomVariable[Constant=1.0]"),
147 "Bounds", RectangleValue (Rectangle (wifiX, wifiX + 5.0,0.0, (nStas + 1) * 5.0)));
148 mobility.Install (sta);
149 wifiMac.SetType ("ns3::StaWifiMac",
150 "Ssid", SsidValue (ssid));
151 staDev = wifi.Install (wifiPhy, wifiMac, sta);
152 staInterface = ip.Assign (staDev);
153
154 // save everything in containers.
155 staNodes.push_back (sta);
156 apDevices.push_back (apDev);
157 apInterfaces.push_back (apInterface);
158 staDevices.push_back (staDev);
159 staInterfaces.push_back (staInterface);
160
161 wifiX += 20.0;
162 }
163
164 Address dest;
165 std::string protocol;
166 if (sendIp)
167 {
168 dest = InetSocketAddress (staInterfaces[1].GetAddress (1), 1025);
169 protocol = "ns3::UdpSocketFactory";
170 }
171 else
172 {
174 tmp.SetSingleDevice (staDevices[0].Get (0)->GetIfIndex ());
175 tmp.SetPhysicalAddress (staDevices[1].Get (0)->GetAddress ());
176 tmp.SetProtocol (0x807);
177 dest = tmp;
178 protocol = "ns3::PacketSocketFactory";
179 }
180
181 OnOffHelper onoff = OnOffHelper (protocol, dest);
182 onoff.SetConstantRate (DataRate ("500kb/s"));
183 ApplicationContainer apps = onoff.Install (staNodes[0].Get (0));
184 apps.Start (Seconds (0.5));
185 apps.Stop (Seconds (3.0));
186
187 wifiPhy.EnablePcap ("wifi-wired-bridging", apDevices[0]);
188 wifiPhy.EnablePcap ("wifi-wired-bridging", apDevices[1]);
189
190 if (writeMobility)
191 {
192 AsciiTraceHelper ascii;
193 MobilityHelper::EnableAsciiAll (ascii.CreateFileStream ("wifi-wired-bridging.mob"));
194 }
195
196 Simulator::Stop (Seconds (5.0));
197 Simulator::Run ();
198 Simulator::Destroy ();
199}
a polymophic address class
Definition: address.h:91
holds a vector of ns3::Application pointers.
void Start(Time start)
Arrange for all of the Applications in this container to Start() at the Time given as a parameter.
void Stop(Time stop)
Arrange for all of the Applications in this container to Stop() at the Time given as a parameter.
Manage ASCII trace files for device models.
Definition: trace-helper.h:163
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.
Add capability to bridge multiple LAN segments (IEEE 802.1D bridging)
Definition: bridge-helper.h:44
NetDeviceContainer Install(Ptr< Node > node, NetDeviceContainer c)
This method creates an ns3::BridgeNetDevice with the attributes configured by BridgeHelper::SetDevice...
Parse command-line arguments.
Definition: command-line.h:229
build a set of CsmaNetDevice objects
Definition: csma-helper.h:47
Class for representing data rates.
Definition: data-rate.h:89
This class can be used to hold variables of floating point type such as 'double' or 'float'.
Definition: double.h:41
an Inet address class
aggregate IP/TCP/UDP functionality to existing Nodes.
A helper class to make life easier while doing simple IPv4 address assignment in scripts.
void SetBase(Ipv4Address network, Ipv4Mask mask, Ipv4Address base="0.0.0.1")
Set the base network number, network mask and base address.
Ipv4InterfaceContainer Assign(const NetDeviceContainer &c)
Assign IP addresses to the net devices specified in the container based on the current network prefix...
holds a vector of std::pair of Ptr<Ipv4> and interface index.
Helper class used to assign positions and mobility models to nodes.
holds a vector of ns3::NetDevice pointers
Ptr< NetDevice > Get(uint32_t i) const
Get the Ptr<NetDevice> stored in this container at a given index.
keep track of a set of node pointers.
void Create(uint32_t n)
Create n nodes and append pointers to them to the end of this NodeContainer.
Ptr< Node > Get(uint32_t i) const
Get the Ptr<Node> stored in this container at a given index.
A helper to make it easier to instantiate an ns3::OnOffApplication on a set of nodes.
Definition: on-off-helper.h:43
void SetConstantRate(DataRate dataRate, uint32_t packetSize=512)
Helper function to set a constant rate source.
ApplicationContainer Install(NodeContainer c) const
Install an ns3::OnOffApplication on each node of the input container configured with all the attribut...
an address for a packet socket
void SetProtocol(uint16_t protocol)
Set the protocol.
void SetPhysicalAddress(const Address address)
Set the destination address.
void SetSingleDevice(uint32_t device)
Set the address to match only a specified NetDevice.
void EnablePcap(std::string prefix, Ptr< NetDevice > nd, bool promiscuous=false, bool explicitFilename=false)
Enable pcap output the indicated net device.
a 2d rectangle
Definition: rectangle.h:35
AttributeValue implementation for Rectangle.
The IEEE 802.11 SSID Information Element.
Definition: ssid.h:36
AttributeValue implementation for Ssid.
Hold variables of type string.
Definition: string.h:41
Hold an unsigned integer type.
Definition: uinteger.h:44
helps to create WifiNetDevice objects
Definition: wifi-helper.h:323
create MAC layers for a ns3::WifiNetDevice.
void SetType(std::string type, Args &&... args)
void SetPcapDataLinkType(SupportedPcapDataLinkTypes dlt)
Set the data link type of PCAP traces to be used.
Definition: wifi-helper.cc:574
manage and create wifi channel objects for the YANS model.
Ptr< YansWifiChannel > Create(void) const
Make it easy to create and manage PHY objects for the YANS model.
void SetChannel(Ptr< YansWifiChannel > channel)
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition: nstime.h:1244
stack
Definition: first.py:41
Every class exported by the ns3 library is enclosed in the ns3 namespace.
csma
Definition: second.py:63
cmd
Definition: second.py:35
staDevices
Definition: third.py:102
ssid
Definition: third.py:97
wifi
Definition: third.py:99
apDevices
Definition: third.py:105
mobility
Definition: third.py:107