102 lines
3.2 KiB
Python
102 lines
3.2 KiB
Python
#
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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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# Ported to Python by Mohit P. Tahiliani
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#
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try:
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from ns import ns
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except ModuleNotFoundError:
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raise SystemExit(
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"Error: ns3 Python module not found;"
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" Python bindings may not be enabled"
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" or your PYTHONPATH might not be properly configured"
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)
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import sys
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from ctypes import c_bool, c_int
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# // Default Network Topology
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# //
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# // 10.1.1.0
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# // n0 -------------- n1 n2 n3 n4
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# // point-to-point | | | |
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# // ================
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# // LAN 10.1.2.0
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nCsma = c_int(3)
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verbose = c_bool(True)
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cmd = ns.CommandLine(__file__)
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cmd.AddValue("nCsma", "Number of extra CSMA nodes/devices", nCsma)
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cmd.AddValue("verbose", "Tell echo applications to log if true", verbose)
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cmd.Parse(sys.argv)
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if verbose.value:
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ns.LogComponentEnable("UdpEchoClientApplication", ns.LOG_LEVEL_INFO)
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ns.LogComponentEnable("UdpEchoServerApplication", ns.LOG_LEVEL_INFO)
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nCsma.value = 1 if nCsma.value == 0 else nCsma.value
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p2pNodes = ns.NodeContainer()
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p2pNodes.Create(2)
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csmaNodes = ns.NodeContainer()
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csmaNodes.Add(p2pNodes.Get(1))
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csmaNodes.Create(nCsma.value)
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pointToPoint = ns.PointToPointHelper()
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pointToPoint.SetDeviceAttribute("DataRate", ns.StringValue("5Mbps"))
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pointToPoint.SetChannelAttribute("Delay", ns.StringValue("2ms"))
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p2pDevices = pointToPoint.Install(p2pNodes)
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csma = ns.CsmaHelper()
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csma.SetChannelAttribute("DataRate", ns.StringValue("100Mbps"))
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csma.SetChannelAttribute("Delay", ns.TimeValue(ns.NanoSeconds(6560)))
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csmaDevices = csma.Install(csmaNodes)
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stack = ns.InternetStackHelper()
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stack.Install(p2pNodes.Get(0))
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stack.Install(csmaNodes)
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address = ns.Ipv4AddressHelper()
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address.SetBase(ns.Ipv4Address("10.1.1.0"), ns.Ipv4Mask("255.255.255.0"))
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p2pInterfaces = address.Assign(p2pDevices)
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address.SetBase(ns.Ipv4Address("10.1.2.0"), ns.Ipv4Mask("255.255.255.0"))
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csmaInterfaces = address.Assign(csmaDevices)
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echoServer = ns.UdpEchoServerHelper(9)
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serverApps = echoServer.Install(csmaNodes.Get(nCsma.value))
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serverApps.Start(ns.Seconds(1.0))
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serverApps.Stop(ns.Seconds(10.0))
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echoClient = ns.UdpEchoClientHelper(csmaInterfaces.GetAddress(nCsma.value).ConvertTo(), 9)
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echoClient.SetAttribute("MaxPackets", ns.UintegerValue(1))
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echoClient.SetAttribute("Interval", ns.TimeValue(ns.Seconds(1.0)))
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echoClient.SetAttribute("PacketSize", ns.UintegerValue(1024))
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clientApps = echoClient.Install(p2pNodes.Get(0))
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clientApps.Start(ns.Seconds(2.0))
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clientApps.Stop(ns.Seconds(10.0))
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ns.Ipv4GlobalRoutingHelper.PopulateRoutingTables()
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pointToPoint.EnablePcapAll("second")
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csma.EnablePcap("second", csmaDevices.Get(1), True)
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ns.Simulator.Run()
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ns.Simulator.Destroy()
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