21except ModuleNotFoundError:
23 "Error: ns3 Python module not found;"
24 " Python bindings may not be enabled"
25 " or your PYTHONPATH might not be properly configured"
30 cmd = ns.CommandLine()
37 all = ns.NodeContainer(3)
38 net1 = ns.NodeContainer()
41 net2 = ns.NodeContainer()
46 internetv6 = ns.InternetStackHelper()
47 internetv6.Install(all)
50 csma = ns.CsmaHelper()
51 csma.SetChannelAttribute(
"DataRate", ns.DataRateValue(ns.DataRate(5000000)))
52 csma.SetChannelAttribute(
"Delay", ns.TimeValue(ns.MilliSeconds(2)))
53 d1 = csma.Install(net1)
54 d2 = csma.Install(net2)
58 ipv6 = ns.Ipv6AddressHelper()
59 ipv6.SetBase(ns.Ipv6Address(
"2001:1::"), ns.Ipv6Prefix(64))
61 i1.SetForwarding(1,
True)
62 i1.SetDefaultRouteInAllNodes(1)
63 ipv6.SetBase(ns.Ipv6Address(
"2001:2::"), ns.Ipv6Prefix(64))
65 i2.SetForwarding(0,
True)
66 i2.SetDefaultRouteInAllNodes(0)
72 interPacketInterval = ns.Seconds(1.0)
74 ping = ns.PingHelper(i2.GetAddress(1, 1).ConvertTo())
79 ping.SetAttribute(
"Count", ns.UintegerValue(maxPacketCount))
80 ping.SetAttribute(
"Interval", ns.TimeValue(interPacketInterval))
81 ping.SetAttribute(
"Size", ns.UintegerValue(packetSize))
83 apps = ping.Install(ns.NodeContainer(net1.Get(0)))
84 apps.Start(ns.Seconds(2.0))
85 apps.Stop(ns.Seconds(20.0))
88 ascii = ns.AsciiTraceHelper()
89 csma.EnableAsciiAll(ascii.CreateFileStream(
"simple-routing-ping6.tr"))
90 csma.EnablePcapAll(
"simple-routing-ping6",
True)
94 ns.Simulator.Destroy()
97if __name__ ==
"__main__":