103 lines
3.4 KiB
Python
103 lines
3.4 KiB
Python
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# -*- Mode: Python; -*-
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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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# * Ported to Python by Mohit P. Tahiliani
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# */
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import ns.core
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import ns.network
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import ns.csma
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import ns.internet
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import ns.point_to_point
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import ns.applications
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import sys
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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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cmd = ns.core.CommandLine()
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cmd.nCsma = 3
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cmd.verbose = "True"
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cmd.AddValue("nCsma", "Number of \"extra\" CSMA nodes/devices")
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cmd.AddValue("verbose", "Tell echo applications to log if true")
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cmd.Parse(sys.argv)
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nCsma = int(cmd.nCsma)
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verbose = cmd.verbose
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if verbose == "True":
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ns.core.LogComponentEnable("UdpEchoClientApplication", ns.core.LOG_LEVEL_INFO)
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ns.core.LogComponentEnable("UdpEchoServerApplication", ns.core.LOG_LEVEL_INFO)
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nCsma = 1 if int(nCsma) == 0 else int(nCsma)
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p2pNodes = ns.network.NodeContainer()
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p2pNodes.Create(2)
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csmaNodes = ns.network.NodeContainer()
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csmaNodes.Add(p2pNodes.Get(1))
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csmaNodes.Create(nCsma)
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pointToPoint = ns.point_to_point.PointToPointHelper()
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pointToPoint.SetDeviceAttribute("DataRate", ns.core.StringValue("5Mbps"))
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pointToPoint.SetChannelAttribute("Delay", ns.core.StringValue("2ms"))
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p2pDevices = pointToPoint.Install(p2pNodes)
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csma = ns.csma.CsmaHelper()
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csma.SetChannelAttribute("DataRate", ns.core.StringValue("100Mbps"))
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csma.SetChannelAttribute("Delay", ns.core.TimeValue(ns.core.NanoSeconds(6560)))
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csmaDevices = csma.Install(csmaNodes)
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stack = ns.internet.InternetStackHelper()
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stack.Install(p2pNodes.Get(0))
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stack.Install(csmaNodes)
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address = ns.internet.Ipv4AddressHelper()
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address.SetBase(ns.network.Ipv4Address("10.1.1.0"), ns.network.Ipv4Mask("255.255.255.0"))
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p2pInterfaces = address.Assign(p2pDevices)
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address.SetBase(ns.network.Ipv4Address("10.1.2.0"), ns.network.Ipv4Mask("255.255.255.0"))
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csmaInterfaces = address.Assign(csmaDevices)
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echoServer = ns.applications.UdpEchoServerHelper(9)
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serverApps = echoServer.Install(csmaNodes.Get(nCsma))
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serverApps.Start(ns.core.Seconds(1.0))
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serverApps.Stop(ns.core.Seconds(10.0))
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echoClient = ns.applications.UdpEchoClientHelper(csmaInterfaces.GetAddress(nCsma), 9)
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echoClient.SetAttribute("MaxPackets", ns.core.UintegerValue(1))
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echoClient.SetAttribute("Interval", ns.core.TimeValue(ns.core.Seconds (1.0)))
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echoClient.SetAttribute("PacketSize", ns.core.UintegerValue(1024))
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clientApps = echoClient.Install(p2pNodes.Get(0))
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clientApps.Start(ns.core.Seconds(2.0))
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clientApps.Stop(ns.core.Seconds(10.0))
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ns.internet.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.core.Simulator.Run()
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ns.core.Simulator.Destroy()
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