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# /*
# * This program is free software; you can redistribute it and/or modify
# * it under the terms of the GNU General Public License version 2 as
# * published by the Free Software Foundation;
# *
# * This program is distributed in the hope that it will be useful,
# * but WITHOUT ANY WARRANTY; without even the implied warranty of
# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# * GNU General Public License for more details.
# *
# * You should have received a copy of the GNU General Public License
# * along with this program; if not, write to the Free Software
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# *
# */
#
# This ns-3 example demonstrates the use of helper functions to ease
# the construction of simulation scenarios.
#
# The simulation topology consists of a mixed wired and wireless
# scenario in which a hierarchical mobility model is used.
#
# The simulation layout consists of N backbone routers interconnected
# by an ad hoc wifi network.
# Each backbone router also has a local 802.11 network and is connected
# to a local LAN. An additional set of(K-1) nodes are connected to
# this backbone. Finally, a local LAN is connected to each router
# on the backbone, with L-1 additional hosts.
#
# The nodes are populated with TCP/IP stacks, and OLSR unicast routing
# on the backbone. An example UDP transfer is shown. The simulator
# be configured to output tcpdumps or traces from different nodes.
#
#
# +--------------------------------------------------------+
# | |
# | 802.11 ad hoc, ns-2 mobility |
# | |
# +--------------------------------------------------------+
# | o o o(N backbone routers) |
# +--------+ +--------+
# wired LAN | mobile | wired LAN | mobile |
# -----------| router | -----------| router |
# --------- ---------
# | |
# +----------------+ +----------------+
# | 802.11 | | 802.11 |
# | net | | net |
# | K-1 hosts | | K-1 hosts |
# +----------------+ +----------------+
#
import ns.applications
import ns.core
import ns.csma
import ns.internet
import ns.mobility
import ns.network
import ns.olsr
import ns.wifi
# #
# # This function will be used below as a trace sink
# #
# static void
# CourseChangeCallback(std.string path, Ptr<const MobilityModel> model)
# {
# Vector position = model.GetPosition();
# std.cout << "CourseChange " << path << " x=" << position.x << ", y=" << position.y << ", z=" << position.z << std.endl;
# }
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.Default()
wifiPhy.SetChannel(wifiChannel.Create())
wifiInfra.SetRemoteStationManager('ns3::ArfWifiManager')
macInfra = ns.wifi.WifiMacHelper();
macInfra.SetType("ns3::StaWifiMac",
"Ssid", ns.wifi.SsidValue(ssid),
"ActiveProbing", ns.core.BooleanValue(False))
# setup stas
staDevices = wifiInfra.Install(wifiPhy, macInfra, stas)
# setup ap.
macInfra.SetType("ns3::ApWifiMac",
"Ssid", ns.wifi.SsidValue(ssid),
"BeaconGeneration", ns.core.BooleanValue(True),
"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
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()
if __name__ == '__main__':
import sys
main(sys.argv)
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