101 lines
2.6 KiB
Python
101 lines
2.6 KiB
Python
#
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# Copyright (c) 2008-2009 Strasbourg University
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#
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# SPDX-License-Identifier: GPL-2.0-only
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#
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# Author: David Gross <gdavid.devel@gmail.com>
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# Sebastien Vincent <vincent@clarinet.u-strasbg.fr>
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#
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#
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# Network topology:
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#
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# n0 r n1
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# | _ |
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# ====|_|====
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# router
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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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def main(argv):
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cmd = ns.CommandLine()
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cmd.Parse(argv)
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# Create nodes
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print("Create nodes")
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all = ns.NodeContainer(3)
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net1 = ns.NodeContainer()
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net1.Add(all.Get(0))
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net1.Add(all.Get(1))
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net2 = ns.NodeContainer()
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net2.Add(all.Get(1))
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net2.Add(all.Get(2))
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# Create IPv6 Internet Stack
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internetv6 = ns.InternetStackHelper()
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internetv6.Install(all)
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# Create channels
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csma = ns.CsmaHelper()
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csma.SetChannelAttribute("DataRate", ns.DataRateValue(ns.DataRate(5000000)))
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csma.SetChannelAttribute("Delay", ns.TimeValue(ns.MilliSeconds(2)))
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d1 = csma.Install(net1)
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d2 = csma.Install(net2)
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# Create networks and assign IPv6 Addresses
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print("Addressing")
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ipv6 = ns.Ipv6AddressHelper()
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ipv6.SetBase(ns.Ipv6Address("2001:1::"), ns.Ipv6Prefix(64))
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i1 = ipv6.Assign(d1)
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i1.SetForwarding(1, True)
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i1.SetDefaultRouteInAllNodes(1)
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ipv6.SetBase(ns.Ipv6Address("2001:2::"), ns.Ipv6Prefix(64))
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i2 = ipv6.Assign(d2)
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i2.SetForwarding(0, True)
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i2.SetDefaultRouteInAllNodes(0)
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# Create a Ping6 application to send ICMPv6 echo request from n0 to n1 via r
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print("Application")
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packetSize = 1024
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maxPacketCount = 5
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interPacketInterval = ns.Seconds(1)
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# ping = ns.PingHelper(i2.GetAddress(1, 1).ConvertTo())
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ping = ns.PingHelper(i2.GetAddress(1, 1).ConvertTo())
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# ping6.SetLocal(i1.GetAddress(0, 1))
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# ping6.SetRemote(i2.GetAddress(1, 1))
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ping.SetAttribute("Count", ns.UintegerValue(maxPacketCount))
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ping.SetAttribute("Interval", ns.TimeValue(interPacketInterval))
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ping.SetAttribute("Size", ns.UintegerValue(packetSize))
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apps = ping.Install(ns.NodeContainer(net1.Get(0)))
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apps.Start(ns.Seconds(2))
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apps.Stop(ns.Seconds(20))
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print("Tracing")
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ascii = ns.AsciiTraceHelper()
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csma.EnableAsciiAll(ascii.CreateFileStream("simple-routing-ping6.tr"))
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csma.EnablePcapAll("simple-routing-ping6", True)
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# Run Simulation
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ns.Simulator.Run()
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ns.Simulator.Destroy()
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if __name__ == "__main__":
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import sys
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main(sys.argv)
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