Пример #1
0
apps.Start(ns.core.Seconds(1.0))
apps.Stop(ns.core.Seconds(10.0))

sink2 = ns.applications.PacketSinkHelper(
    "ns3::UdpSocketFactory",
    ns.network.Address(
        ns.network.InetSocketAddress(ns.network.Ipv4Address.GetAny(), port)))
apps2 = sink2.Install(c.Get(6))
apps2.Start(ns.core.Seconds(11.0))
apps2.Stop(ns.core.Seconds(16.0))

ascii = ns.network.AsciiTraceHelper()
stream = ascii.CreateFileStream("dynamic-global-routing.tr")
p2p.EnableAsciiAll(stream)
csma.EnableAsciiAll(stream)
internet.EnableAsciiIpv4All(stream)

p2p.EnablePcapAll("dynamic-global-routing")
csma.EnablePcapAll("dynamic-global-routing", False)

n1 = c.Get(1)
ipv41 = n1.GetObject(ns.internet.Ipv4.GetTypeId())

#The first ifIndex is 0 for loopback, then the first p2p is numbered 1,
#then the next p2p is numbered 2
ipv4ifIndex1 = 2

ns.core.Simulator.Schedule(ns.core.Seconds(6), ns.internet.Ipv4.SetDown, ipv41,
                           ipv4ifIndex1)
ns.core.Simulator.Schedule(ns.core.Seconds(4), ns.internet.Ipv4.SetUp, ipv41,
                           ipv4ifIndex1)
Пример #2
0
def main(argv):
    #
    #  First, we initialize a few local variables that control some
    #  simulation parameters.
    #

    cmd = ns.core.CommandLine()
    cmd.backboneNodes = 10
    cmd.infraNodes = 2
    cmd.lanNodes = 2
    cmd.stopTime = 20

    #
    #  Simulation defaults are typically set next, before command line
    #  arguments are parsed.
    #
    ns.core.Config.SetDefault("ns3::OnOffApplication::PacketSize",
                              ns.core.StringValue("1472"))
    ns.core.Config.SetDefault("ns3::OnOffApplication::DataRate",
                              ns.core.StringValue("100kb/s"))

    #
    #  For convenience, we add the local variables to the command line argument
    #  system so that they can be overridden with flags such as
    #  "--backboneNodes=20"
    #

    cmd.AddValue("backboneNodes", "number of backbone nodes")
    cmd.AddValue("infraNodes", "number of leaf nodes")
    cmd.AddValue("lanNodes", "number of LAN nodes")
    cmd.AddValue("stopTime", "simulation stop time(seconds)")

    #
    #  The system global variables and the local values added to the argument
    #  system can be overridden by command line arguments by using this call.
    #
    cmd.Parse(argv)

    backboneNodes = int(cmd.backboneNodes)
    infraNodes = int(cmd.infraNodes)
    lanNodes = int(cmd.lanNodes)
    stopTime = int(cmd.stopTime)

    if (stopTime < 10):
        print("Use a simulation stop time >= 10 seconds")
        exit(1)
    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /
    #                                                                        #
    #  Construct the backbone                                                #
    #                                                                        #
    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /

    #
    #  Create a container to manage the nodes of the adhoc(backbone) network.
    #  Later we'll create the rest of the nodes we'll need.
    #
    backbone = ns.network.NodeContainer()
    backbone.Create(backboneNodes)
    #
    #  Create the backbone wifi net devices and install them into the nodes in
    #  our container
    #
    wifi = ns.wifi.WifiHelper()
    mac = ns.wifi.WifiMacHelper()
    mac.SetType("ns3::AdhocWifiMac")
    wifi.SetRemoteStationManager("ns3::ConstantRateWifiManager", "DataMode",
                                 ns.core.StringValue("OfdmRate54Mbps"))
    wifiPhy = ns.wifi.YansWifiPhyHelper.Default()
    wifiChannel = ns.wifi.YansWifiChannelHelper.Default()
    wifiPhy.SetChannel(wifiChannel.Create())
    backboneDevices = wifi.Install(wifiPhy, mac, backbone)
    #
    #  Add the IPv4 protocol stack to the nodes in our container
    #
    print("Enabling OLSR routing on all backbone nodes")
    internet = ns.internet.InternetStackHelper()
    olsr = ns.olsr.OlsrHelper()
    internet.SetRoutingHelper(olsr)
    # has effect on the next Install ()
    internet.Install(backbone)
    # re-initialize for non-olsr routing.
    # internet.Reset()
    #
    #  Assign IPv4 addresses to the device drivers(actually to the associated
    #  IPv4 interfaces) we just created.
    #
    ipAddrs = ns.internet.Ipv4AddressHelper()
    ipAddrs.SetBase(ns.network.Ipv4Address("192.168.0.0"),
                    ns.network.Ipv4Mask("255.255.255.0"))
    ipAddrs.Assign(backboneDevices)

    #
    #  The ad-hoc network nodes need a mobility model so we aggregate one to
    #  each of the nodes we just finished building.
    #
    mobility = ns.mobility.MobilityHelper()
    mobility.SetPositionAllocator("ns3::GridPositionAllocator", "MinX",
                                  ns.core.DoubleValue(20.0), "MinY",
                                  ns.core.DoubleValue(20.0), "DeltaX",
                                  ns.core.DoubleValue(20.0), "DeltaY",
                                  ns.core.DoubleValue(20.0), "GridWidth",
                                  ns.core.UintegerValue(5), "LayoutType",
                                  ns.core.StringValue("RowFirst"))
    mobility.SetMobilityModel(
        "ns3::RandomDirection2dMobilityModel", "Bounds",
        ns.mobility.RectangleValue(ns.mobility.Rectangle(-500, 500, -500,
                                                         500)), "Speed",
        ns.core.StringValue("ns3::ConstantRandomVariable[Constant=2]"),
        "Pause",
        ns.core.StringValue("ns3::ConstantRandomVariable[Constant=0.2]"))
    mobility.Install(backbone)

    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /
    #                                                                        #
    #  Construct the LANs                                                    #
    #                                                                        #
    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /

    #  Reset the address base-- all of the CSMA networks will be in
    #  the "172.16 address space
    ipAddrs.SetBase(ns.network.Ipv4Address("172.16.0.0"),
                    ns.network.Ipv4Mask("255.255.255.0"))

    for i in range(backboneNodes):
        print("Configuring local area network for backbone node ", i)
        #
        #  Create a container to manage the nodes of the LAN.  We need
        #  two containers here; one with all of the new nodes, and one
        #  with all of the nodes including new and existing nodes
        #
        newLanNodes = ns.network.NodeContainer()
        newLanNodes.Create(lanNodes - 1)
        #  Now, create the container with all nodes on this link
        lan = ns.network.NodeContainer(
            ns.network.NodeContainer(backbone.Get(i)), newLanNodes)
        #
        #  Create the CSMA net devices and install them into the nodes in our
        #  collection.
        #
        csma = ns.csma.CsmaHelper()
        csma.SetChannelAttribute(
            "DataRate", ns.network.DataRateValue(ns.network.DataRate(5000000)))
        csma.SetChannelAttribute("Delay",
                                 ns.core.TimeValue(ns.core.MilliSeconds(2)))
        lanDevices = csma.Install(lan)
        #
        #  Add the IPv4 protocol stack to the new LAN nodes
        #
        internet.Install(newLanNodes)
        #
        #  Assign IPv4 addresses to the device drivers(actually to the
        #  associated IPv4 interfaces) we just created.
        #
        ipAddrs.Assign(lanDevices)
        #
        #  Assign a new network prefix for the next LAN, according to the
        #  network mask initialized above
        #
        ipAddrs.NewNetwork()
        #
        # The new LAN nodes need a mobility model so we aggregate one
        # to each of the nodes we just finished building.
        #
        mobilityLan = ns.mobility.MobilityHelper()
        positionAlloc = ns.mobility.ListPositionAllocator()
        for j in range(newLanNodes.GetN()):
            positionAlloc.Add(ns.core.Vector(0.0, (j * 10 + 10), 0.0))

        mobilityLan.SetPositionAllocator(positionAlloc)
        mobilityLan.PushReferenceMobilityModel(backbone.Get(i))
        mobilityLan.SetMobilityModel("ns3::ConstantPositionMobilityModel")
        mobilityLan.Install(newLanNodes)

    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /
    #                                                                        #
    #  Construct the mobile networks                                         #
    #                                                                        #
    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /

    #  Reset the address base-- all of the 802.11 networks will be in
    #  the "10.0" address space
    ipAddrs.SetBase(ns.network.Ipv4Address("10.0.0.0"),
                    ns.network.Ipv4Mask("255.255.255.0"))

    for i in range(backboneNodes):
        print("Configuring wireless network for backbone node ", i)
        #
        #  Create a container to manage the nodes of the LAN.  We need
        #  two containers here; one with all of the new nodes, and one
        #  with all of the nodes including new and existing nodes
        #
        stas = ns.network.NodeContainer()
        stas.Create(infraNodes - 1)
        #  Now, create the container with all nodes on this link
        infra = ns.network.NodeContainer(
            ns.network.NodeContainer(backbone.Get(i)), stas)
        #
        #  Create another ad hoc network and devices
        #
        ssid = ns.wifi.Ssid('wifi-infra' + str(i))
        wifiInfra = ns.wifi.WifiHelper()
        wifiPhy.SetChannel(wifiChannel.Create())
        wifiInfra.SetRemoteStationManager('ns3::ArfWifiManager')
        macInfra = ns.wifi.WifiMacHelper()
        macInfra.SetType("ns3::StaWifiMac", "Ssid", ns.wifi.SsidValue(ssid))

        # setup stas
        staDevices = wifiInfra.Install(wifiPhy, macInfra, stas)
        # setup ap.
        macInfra.SetType("ns3::ApWifiMac", "Ssid", ns.wifi.SsidValue(ssid))
        apDevices = wifiInfra.Install(wifiPhy, macInfra, backbone.Get(i))
        # Collect all of these new devices
        infraDevices = ns.network.NetDeviceContainer(apDevices, staDevices)

        #  Add the IPv4 protocol stack to the nodes in our container
        #
        internet.Install(stas)
        #
        #  Assign IPv4 addresses to the device drivers(actually to the associated
        #  IPv4 interfaces) we just created.
        #
        ipAddrs.Assign(infraDevices)
        #
        #  Assign a new network prefix for each mobile network, according to
        #  the network mask initialized above
        #
        ipAddrs.NewNetwork()
        #
        #  The new wireless nodes need a mobility model so we aggregate one
        #  to each of the nodes we just finished building.
        #
        subnetAlloc = ns.mobility.ListPositionAllocator()
        for j in range(infra.GetN()):
            subnetAlloc.Add(ns.core.Vector(0.0, j, 0.0))

        mobility.PushReferenceMobilityModel(backbone.Get(i))
        mobility.SetPositionAllocator(subnetAlloc)
        mobility.SetMobilityModel(
            "ns3::RandomDirection2dMobilityModel", "Bounds",
            ns.mobility.RectangleValue(ns.mobility.Rectangle(-10, 10, -10,
                                                             10)), "Speed",
            ns.core.StringValue("ns3::ConstantRandomVariable[Constant=3]"),
            "Pause",
            ns.core.StringValue("ns3::ConstantRandomVariable[Constant=0.4]"))
        mobility.Install(stas)

    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /
    #                                                                        #
    #  Application configuration                                             #
    #                                                                        #
    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /

    #  Create the OnOff application to send UDP datagrams of size
    #  210 bytes at a rate of 448 Kb/s, between two nodes
    print("Create Applications.")
    port = 9  #  Discard port(RFC 863)

    appSource = ns.network.NodeList.GetNode(backboneNodes)
    lastNodeIndex = backboneNodes + backboneNodes * (
        lanNodes - 1) + backboneNodes * (infraNodes - 1) - 1
    appSink = ns.network.NodeList.GetNode(lastNodeIndex)
    # Let's fetch the IP address of the last node, which is on Ipv4Interface 1
    remoteAddr = appSink.GetObject(ns.internet.Ipv4.GetTypeId()).GetAddress(
        1, 0).GetLocal()

    onoff = ns.applications.OnOffHelper(
        "ns3::UdpSocketFactory",
        ns.network.Address(ns.network.InetSocketAddress(remoteAddr, port)))
    apps = onoff.Install(ns.network.NodeContainer(appSource))
    apps.Start(ns.core.Seconds(3))
    apps.Stop(ns.core.Seconds(stopTime - 1))

    #  Create a packet sink to receive these packets
    sink = ns.applications.PacketSinkHelper(
        "ns3::UdpSocketFactory",
        ns.network.InetSocketAddress(ns.network.Ipv4Address.GetAny(), port))
    apps = sink.Install(ns.network.NodeContainer(appSink))
    apps.Start(ns.core.Seconds(3))

    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /
    #                                                                        #
    #  Tracing configuration                                                 #
    #                                                                        #
    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /

    print("Configure Tracing.")
    csma = ns.csma.CsmaHelper()
    #
    #  Let's set up some ns-2-like ascii traces, using another helper class
    #
    ascii = ns.network.AsciiTraceHelper()
    stream = ascii.CreateFileStream("mixed-wireless.tr")
    wifiPhy.EnableAsciiAll(stream)
    csma.EnableAsciiAll(stream)
    internet.EnableAsciiIpv4All(stream)

    #  Csma captures in non-promiscuous mode
    csma.EnablePcapAll("mixed-wireless", False)
    #  Let's do a pcap trace on the backbone devices
    wifiPhy.EnablePcap("mixed-wireless", backboneDevices)
    wifiPhy.EnablePcap("mixed-wireless", appSink.GetId(), 0)

    #   #ifdef ENABLE_FOR_TRACING_EXAMPLE
    #     Config.Connect("/NodeList/*/$MobilityModel/CourseChange",
    #       MakeCallback(&CourseChangeCallback))
    #   #endif

    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
    #                                                                        #
    #  Run simulation                                                        #
    #                                                                        #
    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

    print("Run Simulation.")
    ns.core.Simulator.Stop(ns.core.Seconds(stopTime))
    ns.core.Simulator.Run()
    ns.core.Simulator.Destroy()
Пример #3
0
def main():
    framework.start()

    # First, we initialize a few local variables that control some
    #  simulation parameters.
    cmd = ns.core.CommandLine()
    cmd.backboneNodes = {{backbone_nodes}}
    cmd.infraNodes = {{infra_nodes}}
    cmd.lanNodes = {{lan_nodes}}
    cmd.stopTime = {{exec_time}}

    #  Simulation defaults are typically set next, before command line
    #  arguments are parsed.
    ns.core.Config.SetDefault("ns3::OnOffApplication::PacketSize",
                              ns.core.StringValue("1472"))
    ns.core.Config.SetDefault("ns3::OnOffApplication::DataRate",
                              ns.core.StringValue("100kb/s"))

    backboneNodes = int(cmd.backboneNodes)
    infraNodes = int(cmd.infraNodes)
    lanNodes = int(cmd.lanNodes)
    stopTime = int(cmd.stopTime)

    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /
    #                                                                        #
    #  Construct the backbone                                                #
    #                                                                        #
    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /
    #  Create a container to manage the nodes of the adhoc(backbone) network.
    #  Later we'll create the rest of the nodes we'll need.
    backbone = ns.network.NodeContainer()
    backbone.Create(backboneNodes)

    #  Create the backbone wifi net devices and install them into the nodes in
    #  our container
    wifi = ns.wifi.WifiHelper()
    mac = ns.wifi.WifiMacHelper()
    mac.SetType("ns3::AdhocWifiMac")
    wifi.SetRemoteStationManager(
        "ns3::ConstantRateWifiManager", "DataMode",
        ns.core.StringValue("OfdmRate{}Mbps".format({{ofdm_rate}})))
    wifiPhy = ns.wifi.YansWifiPhyHelper.Default()
    wifiChannel = ns.wifi.YansWifiChannelHelper.Default()
    wifiPhy.SetChannel(wifiChannel.Create())
    backboneDevices = wifi.Install(wifiPhy, mac, backbone)

    #  Add the IPv4 protocol stack to the nodes in our container
    print("Enabling OLSR routing on all backbone nodes")
    internet = ns.internet.InternetStackHelper()
    olsr = ns.olsr.OlsrHelper()
    internet.SetRoutingHelper(olsr)
    # has effect on the next Install ()
    internet.Install(backbone)

    #  Assign IPv4 addresses to the device drivers(actually to the associated
    #  IPv4 interfaces) we just created.
    ipAddrs = ns.internet.Ipv4AddressHelper()
    ipAddrs.SetBase(ns.network.Ipv4Address("192.168.0.0"),
                    ns.network.Ipv4Mask("255.255.255.0"))
    ipAddrs.Assign(backboneDevices)

    #  The ad-hoc network nodes need a mobility model so we aggregate one to
    #  each of the nodes we just finished building.
    mobility = ns.mobility.MobilityHelper()
    mobility.SetPositionAllocator("ns3::GridPositionAllocator", "MinX",
                                  ns.core.DoubleValue(20.0), "MinY",
                                  ns.core.DoubleValue(20.0), "DeltaX",
                                  ns.core.DoubleValue(20.0), "DeltaY",
                                  ns.core.DoubleValue(20.0), "GridWidth",
                                  ns.core.UintegerValue(5), "LayoutType",
                                  ns.core.StringValue("RowFirst"))
    mobility.SetMobilityModel(
        "ns3::RandomDirection2dMobilityModel", "Bounds",
        ns.mobility.RectangleValue(ns.mobility.Rectangle(-500, 500, -500,
                                                         500)), "Speed",
        ns.core.StringValue("ns3::ConstantRandomVariable[Constant=2]"),
        "Pause",
        ns.core.StringValue("ns3::ConstantRandomVariable[Constant=0.2]"))
    mobility.Install(backbone)

    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /
    #                                                                        #
    #  Construct the LANs                                                    #
    #                                                                        #
    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /
    #  Reset the address base-- all of the CSMA networks will be in
    #  the "172.16 address space
    ipAddrs.SetBase(ns.network.Ipv4Address("172.16.0.0"),
                    ns.network.Ipv4Mask("255.255.255.0"))

    for i in range(backboneNodes):
        #  Create a container to manage the nodes of the LAN.  We need
        #  two containers here; one with all of the new nodes, and one
        #  with all of the nodes including new and existing nodes
        newLanNodes = ns.network.NodeContainer()
        newLanNodes.Create(lanNodes - 1)
        lan = ns.network.NodeContainer(
            ns.network.NodeContainer(backbone.Get(i)), newLanNodes)

        #  Create the CSMA net devices and install them into the nodes in our
        #  collection.
        csma = ns.csma.CsmaHelper()
        csma.SetChannelAttribute(
            "DataRate",
            ns.network.DataRateValue(ns.network.DataRate({{datarate}})))
        csma.SetChannelAttribute(
            "Delay", ns.core.TimeValue(ns.core.MilliSeconds({{delay}})))
        lanDevices = csma.Install(lan)

        #  Add the IPv4 protocol stack to the new LAN nodes
        internet.Install(newLanNodes)

        #  Assign IPv4 addresses to the device drivers(actually to the
        #  associated IPv4 interfaces) we just created.
        ipAddrs.Assign(lanDevices)

        #  Assign a new network prefix for the next LAN, according to the
        #  network mask initialized above
        ipAddrs.NewNetwork()

        # The new LAN nodes need a mobility model so we aggregate one
        # to each of the nodes we just finished building.
        mobilityLan = ns.mobility.MobilityHelper()
        positionAlloc = ns.mobility.ListPositionAllocator()
        for j in range(newLanNodes.GetN()):
            positionAlloc.Add(ns.core.Vector(0.0, (j * 10 + 10), 0.0))

        mobilityLan.SetPositionAllocator(positionAlloc)
        mobilityLan.PushReferenceMobilityModel(backbone.Get(i))
        mobilityLan.SetMobilityModel("ns3::ConstantPositionMobilityModel")
        mobilityLan.Install(newLanNodes)

    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /
    #                                                                        #
    #  Construct the mobile networks                                         #
    #                                                                        #
    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /
    #  Reset the address base-- all of the 802.11 networks will be in
    #  the "10.0" address space
    ipAddrs.SetBase(ns.network.Ipv4Address("10.0.0.0"),
                    ns.network.Ipv4Mask("255.255.255.0"))

    for i in range(backboneNodes):
        #  Create a container to manage the nodes of the LAN.  We need
        #  two containers here; one with all of the new nodes, and one
        #  with all of the nodes including new and existing nodes
        stas = ns.network.NodeContainer()
        stas.Create(infraNodes - 1)
        infra = ns.network.NodeContainer(
            ns.network.NodeContainer(backbone.Get(i)), stas)

        #  Create another ad hoc network and devices
        ssid = ns.wifi.Ssid('wifi-infra' + str(i))
        wifiInfra = ns.wifi.WifiHelper()
        wifiPhy.SetChannel(wifiChannel.Create())
        wifiInfra.SetRemoteStationManager('ns3::ArfWifiManager')
        macInfra = ns.wifi.WifiMacHelper()
        macInfra.SetType("ns3::StaWifiMac", "Ssid", ns.wifi.SsidValue(ssid))

        # setup stas
        staDevices = wifiInfra.Install(wifiPhy, macInfra, stas)
        # setup ap.
        macInfra.SetType("ns3::ApWifiMac", "Ssid", ns.wifi.SsidValue(ssid),
                         "BeaconInterval",
                         ns.core.TimeValue(ns.core.Seconds(2.5)))
        apDevices = wifiInfra.Install(wifiPhy, macInfra, backbone.Get(i))
        # Collect all of these new devices
        infraDevices = ns.network.NetDeviceContainer(apDevices, staDevices)

        #  Add the IPv4 protocol stack to the nodes in our container
        internet.Install(stas)

        #  Assign IPv4 addresses to the device drivers(actually to the associated
        #  IPv4 interfaces) we just created.
        ipAddrs.Assign(infraDevices)

        #  Assign a new network prefix for each mobile network, according to
        #  the network mask initialized above
        ipAddrs.NewNetwork()

        #  The new wireless nodes need a mobility model so we aggregate one
        #  to each of the nodes we just finished building.
        subnetAlloc = ns.mobility.ListPositionAllocator()
        for j in range(infra.GetN()):
            subnetAlloc.Add(ns.core.Vector(0.0, j, 0.0))

        mobility.PushReferenceMobilityModel(backbone.Get(i))
        mobility.SetPositionAllocator(subnetAlloc)
        mobility.SetMobilityModel(
            "ns3::RandomDirection2dMobilityModel", "Bounds",
            ns.mobility.RectangleValue(ns.mobility.Rectangle(-10, 10, -10,
                                                             10)), "Speed",
            ns.core.StringValue("ns3::ConstantRandomVariable[Constant=3]"),
            "Pause",
            ns.core.StringValue("ns3::ConstantRandomVariable[Constant=0.4]"))
        mobility.Install(stas)

    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /
    #                                                                        #
    #  Application configuration                                             #
    #                                                                        #
    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /
    #  Create the OnOff application to send UDP datagrams of size
    #  210 bytes at a rate of 448 Kb/s, between two nodes
    port = 9  #  Discard port(RFC 863)

    appSource = ns.network.NodeList.GetNode(backboneNodes)
    lastNodeIndex = backboneNodes + backboneNodes * (
        lanNodes - 1) + backboneNodes * (infraNodes - 1) - 1
    appSink = ns.network.NodeList.GetNode(lastNodeIndex)
    # Let's fetch the IP address of the last node, which is on Ipv4Interface 1
    remoteAddr = appSink.GetObject(ns.internet.Ipv4.GetTypeId()).GetAddress(
        1, 0).GetLocal()

    onoff = ns.applications.OnOffHelper(
        "ns3::UdpSocketFactory",
        ns.network.Address(ns.network.InetSocketAddress(remoteAddr, port)))
    apps = onoff.Install(ns.network.NodeContainer(appSource))
    apps.Start(ns.core.Seconds(3))
    apps.Stop(ns.core.Seconds(stopTime - 1))

    #  Create a packet sink to receive these packets
    sink = ns.applications.PacketSinkHelper(
        "ns3::UdpSocketFactory",
        ns.network.InetSocketAddress(ns.network.Ipv4Address.GetAny(), port))
    apps = sink.Install(ns.network.NodeContainer(appSink))
    apps.Start(ns.core.Seconds(3))

    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /
    #                                                                        #
    #  Tracing configuration                                                 #
    #                                                                        #
    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # /
    csma = ns.csma.CsmaHelper()

    #  Let's set up some ns-2-like ascii traces, using another helper class
    #
    ascii = ns.network.AsciiTraceHelper()
    stream = ascii.CreateFileStream("mixed-wireless.tr")
    wifiPhy.EnableAsciiAll(stream)
    csma.EnableAsciiAll(stream)
    internet.EnableAsciiIpv4All(stream)

    mob = ascii.CreateFileStream("mixed-wireless.mob")
    mobility.EnableAsciiAll(mob)

    #  Csma captures in non-promiscuous mode
    csma.EnablePcapAll("mixed-wireless", False)
    #  Let's do a pcap trace on the backbone devices
    wifiPhy.EnablePcap("mixed-wireless", backboneDevices)
    wifiPhy.EnablePcap("mixed-wireless", appSink.GetId(), 0)

    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
    #                                                                        #
    #  Run simulation                                                        #
    #                                                                        #
    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
    ns.core.Simulator.Stop(ns.core.Seconds(stopTime))
    ns.core.Simulator.Run()
    ns.core.Simulator.Destroy()

    framework.addBinaryFile("mixed-wireless.tr")
    framework.addBinaryFile("mixed-wireless.mob")

    path = "*.pcap"
    for filename in glob.glob(path):
        framework.addBinaryFile(filename)

    framework.stop()