Lab Task

internet-apps/csma-ping.py

@@ -0,0 +1,65 @@
+import ns.applications
+import ns.core
+import ns.internet
+import ns.network
+import ns.point_to_point
+import ns.csma
+import ns.internet_apps
+
+
+c = ns.network.NodeContainer()
+c.Create(4)
+
+
+csma = ns.csma.CsmaHelper()
+csma.SetChannelAttribute("DataRate", ns.core.StringValue("100Mbps"))
+csma.SetChannelAttribute("Delay", ns.core.TimeValue(ns.core.NanoSeconds(6560)))
+
+csma.SetDeviceAttribute ("EncapsulationMode", ns.core.StringValue ("Llc"));
+devs = csma.Install (c);
+
+stack = ns.internet.InternetStackHelper()
+stack.Install(c)
+
+
+ip = ns.internet.Ipv4AddressHelper()
+ip.SetBase(ns.network.Ipv4Address("10.1.1.0"),
+                ns.network.Ipv4Mask("255.255.255.0"))
+addresses = ns.internet.Ipv4InterfaceContainer()
+
+addresses = ip.Assign(devs)
+
+
+ns.core.Config.SetDefault ("ns3::Ipv4RawSocketImpl::Protocol", ns.core.StringValue ("2"))
+
+dst = ns.network.InetSocketAddress (addresses.GetAddress (3))
+onoff =ns.applications.OnOffHelper ("ns3::Ipv4RawSocketFactory", dst);
+onoff.SetAttribute ("DataRate", ns.core.StringValue("15000"));
+onoff.SetAttribute ("PacketSize", ns.core.UintegerValue (1200));
+
+apps=ns.network.ApplicationContainer ()
+apps = onoff.Install (c.Get (0));
+apps.Start (ns.core.Seconds (1.0));
+apps.Stop (ns.core.Seconds (10.0));
+
+sink = ns.applications.PacketSinkHelper ("ns3::Ipv4RawSocketFactory", dst)
+apps = sink.Install (c.Get (3));
+apps.Start (ns.core.Seconds (0.0));
+apps.Stop (ns.core.Seconds (11.0));
+
+ping =ns.internet_apps.V4PingHelper(addresses.GetAddress(2));
+pingers = ns.network.NodeContainer()
+pingers.Add (c.Get (0));
+pingers.Add (c.Get (1));
+pingers.Add (c.Get (3));
+apps = ping.Install (pingers);
+apps.Start (ns.core.Seconds (2.0));
+apps.Stop (ns.core.Seconds (5.0));
+
+
+csma.EnablePcapAll("csma-ping", False)
+
+ns.core.Simulator.Run()
+ns.core.Simulator.Destroy()
+
+

internet-apps/iping.py

@@ -0,0 +1,93 @@
+import ns.applications
+import ns.core
+import ns.internet
+import ns.network
+import ns.internet_apps
+import ns.point_to_point
+import sys
+
+cmd = ns.core.CommandLine()
+cmd.c = 4294967295
+cmd.t = 0
+cmd.i = 1.0
+cmd.w = 15.0
+cmd.s = 56
+cmd.v = False
+cmd.q = False
+
+cmd.AddValue("c", "Stops after sending specified number(count) of ECHO_REQUEST packets.")
+cmd.AddValue("i", "Specify the interval seconds between sending each packet.")
+cmd.AddValue("t", "Set the IP Time to Live.")
+cmd.AddValue("w", "Specify a timeout, in seconds, before ping exits regardless  of  how  many  packets have  been sent or received.")
+cmd.AddValue("s", "Specifies the number of data bytes to be sent.")
+cmd.AddValue("v", "Verbose output.")
+cmd.AddValue("q", "Quiet output.  Nothing is displayed except the summary lines at  startup  time  and when finished.")
+
+cmd.Parse(sys.argv)
+
+count = int(cmd.c)
+ttl = int(cmd.t)
+deadline = float(cmd.w)
+packetsize = int(cmd.s)
+interval = float(cmd.i)
+verbose = bool(cmd.v)
+quiet = bool(cmd.q)
+
+if count <=0:
+	print ("ping: bad number of packets to transmit.")
+	sys.exit(1)
+if interval < 0:
+	print ("ping: bad timing interval.")
+	sys.exit(1)
+if ttl < 0:
+	print ("ping: bad value.")
+	sys.exit(1)
+if packetsize < 0:
+	print ("ping: illegal negetive packet size.")
+	sys.exit(1)
+if interval < 0.2 and interval >= 0 :
+	print ("ping: cannot flood minimal interval allowed for user is 200ms.")
+	sys.exit(1)
+
+c = ns.network.NodeContainer()
+c.Create (2)
+
+pointToPoint = ns.point_to_point.PointToPointHelper()
+pointToPoint.SetDeviceAttribute ("DataRate", ns.core.StringValue ("5Mbps"))
+pointToPoint.SetChannelAttribute ("Delay", ns.core.StringValue ("2ms"))
+
+devices = ns.network.NetDeviceContainer()
+devices = pointToPoint.Install(c)
+
+address = ns.internet.Ipv4AddressHelper()
+address.SetBase(ns.network.Ipv4Address("10.1.1.0"), ns.network.Ipv4Mask("255.255.255.0"))
+stack = ns.internet.InternetStackHelper()
+stack.Install(c)
+
+interfaces = ns.internet.Ipv4InterfaceContainer()
+interfaces = address.Assign(devices)
+
+app = ns.internet_apps.V4Ping()
+
+app.SetAttribute ("Remote", ns.network.Ipv4AddressValue (interfaces.GetAddress(1)))
+app.SetAttribute ("Verbose", ns.core.BooleanValue (verbose))
+app.SetAttribute ("Count", ns.core.UintegerValue (count))
+app.SetAttribute ("Ttl", ns.core.UintegerValue (ttl))     
+app.SetAttribute ("Quiet", ns.core.BooleanValue (quiet) )     
+app.SetAttribute ("Interval", ns.core.TimeValue (ns.core.Seconds (interval)) )
+app.SetAttribute ("Size", ns.core.UintegerValue (packetsize))
+
+c.Get(0).AddApplication(app)
+
+app.SetStartTime(ns.core.Seconds(1.0))
+app.SetStopTime(ns.core.Seconds(1.0 + deadline))
+
+pointToPoint.EnablePcapAll("iping", False)
+
+ns.core.Simulator.Run()
+ns.core.Simulator.Destroy()
+
+
+
+
+