int
main (int argc, char *argv[])
{
//
// Users may find it convenient to turn on explicit debugging
// for selected modules; the below lines suggest how to do this
//
#if 0
LogComponentEnable ("UdpEchoExample", LOG_LEVEL_INFO);
LogComponentEnable ("UdpEchoClientApplication", LOG_LEVEL_ALL);
LogComponentEnable ("UdpEchoServerApplication", LOG_LEVEL_ALL);
#endif
//
// Allow the user to override any of the defaults and the above Bind() at
// run-time, via command-line arguments
//
bool useV6 = false;
Address serverAddress;
CommandLine cmd;
cmd.AddValue ("useIpv6", "Use Ipv6", useV6);
cmd.Parse (argc, argv);
//
// Explicitly create the nodes required by the topology (shown above).
//
NS_LOG_INFO ("Create nodes.");
NodeContainer n;
n.Create (4);
InternetStackHelper internet;
internet.Install (n);
NS_LOG_INFO ("Create channels.");
//
// Explicitly create the channels required by the topology (shown above).
//
CsmaHelper csma;
csma.SetChannelAttribute ("DataRate", DataRateValue (DataRate (5000000)));
csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
csma.SetDeviceAttribute ("Mtu", UintegerValue (1400));
NetDeviceContainer d = csma.Install (n);
//
// We've got the "hardware" in place. Now we need to add IP addresses.
//
NS_LOG_INFO ("Assign IP Addresses.");
if (useV6 == false)
{
Ipv4AddressHelper ipv4;
ipv4.SetBase ("10.1.1.0", "255.255.255.0");
Ipv4InterfaceContainer i = ipv4.Assign (d);
serverAddress = Address(i.GetAddress (1));
}
else
{
Ipv6AddressHelper ipv6;
ipv6.SetBase ("2001:0000:f00d:cafe::", Ipv6Prefix (64));
Ipv6InterfaceContainer i6 = ipv6.Assign (d);
serverAddress = Address(i6.GetAddress (1,1));
}
NS_LOG_INFO ("Create Applications.");
//
// Create a UdpEchoServer application on node one.
//
uint16_t port = 9; // well-known echo port number
UdpEchoServerHelper server (port);
ApplicationContainer apps = server.Install (n.Get (1));
apps.Start (Seconds (1.0));
apps.Stop (Seconds (10.0));
//
// Create a UdpEchoClient application to send UDP datagrams from node zero to
// node one.
//
uint32_t packetSize = 1024;
uint32_t maxPacketCount = 1;
Time interPacketInterval = Seconds (1.);
UdpEchoClientHelper client (serverAddress, port);
client.SetAttribute ("MaxPackets", UintegerValue (maxPacketCount));
client.SetAttribute ("Interval", TimeValue (interPacketInterval));
client.SetAttribute ("PacketSize", UintegerValue (packetSize));
apps = client.Install (n.Get (0));
apps.Start (Seconds (2.0));
apps.Stop (Seconds (10.0));
#if 0
//
// Users may find it convenient to initialize echo packets with actual data;
// the below lines suggest how to do this
//
client.SetFill (apps.Get (0), "Hello World");
client.SetFill (apps.Get (0), 0xa5, 1024);
uint8_t fill[] = { 0, 1, 2, 3, 4, 5, 6};
client.SetFill (apps.Get (0), fill, sizeof(fill), 1024);
#endif
AsciiTraceHelper ascii;
csma.EnableAsciiAll (ascii.CreateFileStream ("udp-echo.tr"));
csma.EnablePcapAll ("udp-echo", false);
//
// Now, do the actual simulation.
//
NS_LOG_INFO ("Run Simulation.");
Simulator::Run ();
Simulator::Destroy ();
NS_LOG_INFO ("Done.");
}
int
main (int argc, char *argv[])
{
//
// Users may find it convenient to turn on explicit debugging
// for selected modules; the below lines suggest how to do this
//
#if 0
LogComponentEnable ("CsmaBridgeOneHopExample", LOG_LEVEL_INFO);
#endif
//
// Allow the user to override any of the defaults and the above Bind() at
// run-time, via command-line arguments
//
CommandLine cmd;
cmd.Parse (argc, argv);
//
// Explicitly create the nodes required by the topology (shown above).
//
NS_LOG_INFO ("Create nodes.");
Ptr<Node> n0 = CreateObject<Node> ();
Ptr<Node> n1 = CreateObject<Node> ();
Ptr<Node> n2 = CreateObject<Node> ();
Ptr<Node> n3 = CreateObject<Node> ();
Ptr<Node> n4 = CreateObject<Node> ();
Ptr<Node> bridge1 = CreateObject<Node> ();
Ptr<Node> bridge2 = CreateObject<Node> ();
NS_LOG_INFO ("Build Topology");
CsmaHelper csma;
csma.SetChannelAttribute ("DataRate", DataRateValue (5000000));
csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
// Create the csma links, from each terminal to the bridge
// This will create six network devices; we'll keep track separately
// of the devices on and off the bridge respectively, for later configuration
NetDeviceContainer topLanDevices;
NetDeviceContainer topBridgeDevices;
// It is easier to iterate the nodes in C++ if we put them into a container
NodeContainer topLan (n2, n0, n1);
for (int i = 0; i < 3; i++)
{
// install a csma channel between the ith toplan node and the bridge node
NetDeviceContainer link = csma.Install (NodeContainer (topLan.Get (i), bridge1));
topLanDevices.Add (link.Get (0));
topBridgeDevices.Add (link.Get (1));
}
//
// Now, Create the bridge netdevice, which will do the packet switching. The
// bridge lives on the node bridge1 and bridges together the topBridgeDevices
// which are the three CSMA net devices on the node in the diagram above.
//
BridgeHelper bridge;
bridge.Install (bridge1, topBridgeDevices);
// Add internet stack to the router nodes
NodeContainer routerNodes (n0, n1, n2, n3, n4);
InternetStackHelper internet;
internet.Install (routerNodes);
// Repeat for bottom bridged LAN
NetDeviceContainer bottomLanDevices;
NetDeviceContainer bottomBridgeDevices;
NodeContainer bottomLan (n2, n3, n4);
for (int i = 0; i < 3; i++)
{
NetDeviceContainer link = csma.Install (NodeContainer (bottomLan.Get (i), bridge2));
bottomLanDevices.Add (link.Get (0));
bottomBridgeDevices.Add (link.Get (1));
}
bridge.Install (bridge2, bottomBridgeDevices);
// We've got the "hardware" in place. Now we need to add IP addresses.
NS_LOG_INFO ("Assign IP Addresses.");
Ipv4AddressHelper ipv4;
ipv4.SetBase ("10.1.1.0", "255.255.255.0");
ipv4.Assign (topLanDevices);
ipv4.SetBase ("10.1.2.0", "255.255.255.0");
ipv4.Assign (bottomLanDevices);
//
// Create router nodes, initialize routing database and set up the routing
// tables in the nodes. We excuse the bridge nodes from having to serve as
// routers, since they don't even have internet stacks on them.
//
Ipv4GlobalRoutingHelper::PopulateRoutingTables ();
//
// Create an OnOff application to send UDP datagrams from node zero to node 1.
//
NS_LOG_INFO ("Create Applications.");
uint16_t port = 9; // Discard port (RFC 863)
OnOffHelper onoff ("ns3::UdpSocketFactory",
Address (InetSocketAddress (Ipv4Address ("10.1.1.3"), port)));
onoff.SetConstantRate (DataRate ("500kb/s"));
ApplicationContainer app = onoff.Install (n0);
// Start the application
app.Start (Seconds (1.0));
app.Stop (Seconds (10.0));
// Create an optional packet sink to receive these packets
PacketSinkHelper sink ("ns3::UdpSocketFactory",
Address (InetSocketAddress (Ipv4Address::GetAny (), port)));
ApplicationContainer sink1 = sink.Install (n1);
sink1.Start (Seconds (1.0));
sink1.Stop (Seconds (10.0));
//
// Create a similar flow from n3 to n0, starting at time 1.1 seconds
//
onoff.SetAttribute ("Remote",
AddressValue (InetSocketAddress (Ipv4Address ("10.1.1.2"), port)));
ApplicationContainer app2 = onoff.Install (n3);
app2.Start (Seconds (1.1));
app2.Stop (Seconds (10.0));
ApplicationContainer sink2 = sink.Install (n0);
sink2.Start (Seconds (1.1));
sink2.Stop (Seconds (10.0));
NS_LOG_INFO ("Configure Tracing.");
//
// Configure tracing of all enqueue, dequeue, and NetDevice receive events.
// Trace output will be sent to the file "csma-bridge-one-hop.tr"
//
AsciiTraceHelper ascii;
csma.EnableAsciiAll (ascii.CreateFileStream ("csma-bridge-one-hop.tr"));
//
// Also configure some tcpdump traces; each interface will be traced.
// The output files will be named:
// csma-bridge-one-hop-<nodeId>-<interfaceId>.pcap
// and can be read by the "tcpdump -r" command (use "-tt" option to
// display timestamps correctly)
//
csma.EnablePcapAll ("csma-bridge-one-hop", false);
//
// Now, do the actual simulation.
//
NS_LOG_INFO ("Run Simulation.");
Simulator::Run ();
Simulator::Destroy ();
NS_LOG_INFO ("Done.");
}
int
main (int argc, char *argv[])
{
//
// Users may find it convenient to turn on explicit debugging
// for selected modules; the below lines suggest how to do this
//
// LogComponentEnable ("CsmaMulticastExample", LOG_LEVEL_INFO);
//
// Set up default values for the simulation.
//
// Select DIX/Ethernet II-style encapsulation (no LLC/Snap header)
Config::SetDefault ("ns3::CsmaNetDevice::EncapsulationMode", StringValue ("Dix"));
// Allow the user to override any of the defaults at
// run-time, via command-line arguments
CommandLine cmd;
cmd.Parse (argc, argv);
NS_LOG_INFO ("Create nodes.");
NodeContainer c;
c.Create (5);
// We will later want two subcontainers of these nodes, for the two LANs
NodeContainer c0 = NodeContainer (c.Get (0), c.Get (1), c.Get (2));
NodeContainer c1 = NodeContainer (c.Get (2), c.Get (3), c.Get (4));
NS_LOG_INFO ("Build Topology.");
CsmaHelper csma;
csma.SetChannelAttribute ("DataRate", DataRateValue (DataRate (5000000)));
csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
// We will use these NetDevice containers later, for IP addressing
NetDeviceContainer nd0 = csma.Install (c0); // First LAN
NetDeviceContainer nd1 = csma.Install (c1); // Second LAN
NS_LOG_INFO ("Add IP Stack.");
InternetStackHelper internet;
internet.Install (c);
NS_LOG_INFO ("Assign IP Addresses.");
Ipv4AddressHelper ipv4Addr;
ipv4Addr.SetBase ("10.1.1.0", "255.255.255.0");
ipv4Addr.Assign (nd0);
ipv4Addr.SetBase ("10.1.2.0", "255.255.255.0");
ipv4Addr.Assign (nd1);
NS_LOG_INFO ("Configure multicasting.");
//
// Now we can configure multicasting. As described above, the multicast
// source is at node zero, which we assigned the IP address of 10.1.1.1
// earlier. We need to define a multicast group to send packets to. This
// can be any multicast address from 224.0.0.0 through 239.255.255.255
// (avoiding the reserved routing protocol addresses).
//
Ipv4Address multicastSource ("10.1.1.1");
Ipv4Address multicastGroup ("225.1.2.4");
// Now, we will set up multicast routing. We need to do three things:
// 1) Configure a (static) multicast route on node n2
// 2) Set up a default multicast route on the sender n0
// 3) Have node n4 join the multicast group
// We have a helper that can help us with static multicast
Ipv4StaticRoutingHelper multicast;
// 1) Configure a (static) multicast route on node n2 (multicastRouter)
Ptr<Node> multicastRouter = c.Get (2); // The node in question
Ptr<NetDevice> inputIf = nd0.Get (2); // The input NetDevice
NetDeviceContainer outputDevices; // A container of output NetDevices
outputDevices.Add (nd1.Get (0)); // (we only need one NetDevice here)
multicast.AddMulticastRoute (multicastRouter, multicastSource,
multicastGroup, inputIf, outputDevices);
// 2) Set up a default multicast route on the sender n0
Ptr<Node> sender = c.Get (0);
Ptr<NetDevice> senderIf = nd0.Get (0);
multicast.SetDefaultMulticastRoute (sender, senderIf);
//
// Create an OnOff application to send UDP datagrams from node zero to the
// multicast group (node four will be listening).
//
NS_LOG_INFO ("Create Applications.");
uint16_t multicastPort = 9; // Discard port (RFC 863)
// Configure a multicast packet generator that generates a packet
// every few seconds
OnOffHelper onoff ("ns3::UdpSocketFactory",
Address (InetSocketAddress (multicastGroup, multicastPort)));
onoff.SetConstantRate (DataRate ("255b/s"));
onoff.SetAttribute ("PacketSize", UintegerValue (128));
ApplicationContainer srcC = onoff.Install (c0.Get (0));
//
// Tell the application when to start and stop.
//
srcC.Start (Seconds (1.));
srcC.Stop (Seconds (10.));
// Create an optional packet sink to receive these packets
PacketSinkHelper sink ("ns3::UdpSocketFactory",
InetSocketAddress (Ipv4Address::GetAny (), multicastPort));
ApplicationContainer sinkC = sink.Install (c1.Get (2)); // Node n4
// Start the sink
sinkC.Start (Seconds (1.0));
sinkC.Stop (Seconds (10.0));
NS_LOG_INFO ("Configure Tracing.");
//
// Configure tracing of all enqueue, dequeue, and NetDevice receive events.
// Ascii trace output will be sent to the file "csma-multicast.tr"
//
AsciiTraceHelper ascii;
csma.EnableAsciiAll (ascii.CreateFileStream ("csma-multicast.tr"));
// Also configure some tcpdump traces; each interface will be traced.
// The output files will be named:
// csma-multicast-<nodeId>-<interfaceId>.pcap
// and can be read by the "tcpdump -r" command (use "-tt" option to
// display timestamps correctly)
csma.EnablePcapAll ("csma-multicast", false);
//
// Now, do the actual simulation.
//
NS_LOG_INFO ("Run Simulation.");
Simulator::Run ();
Simulator::Destroy ();
NS_LOG_INFO ("Done.");
}
int main (int argc, char** argv)
{
bool verbose = false;
CommandLine cmd;
cmd.AddValue ("verbose", "turn on log components", verbose);
cmd.Parse (argc, argv);
if (verbose)
{
LogComponentEnable ("Ipv6L3Protocol", LOG_LEVEL_ALL);
LogComponentEnable ("Icmpv6L4Protocol", LOG_LEVEL_ALL);
LogComponentEnable ("Ipv6StaticRouting", LOG_LEVEL_ALL);
LogComponentEnable ("Ipv6Interface", LOG_LEVEL_ALL);
LogComponentEnable ("Ping6Application", LOG_LEVEL_ALL);
}
NS_LOG_INFO ("Create nodes.");
Ptr<Node> n0 = CreateObject<Node> ();
Ptr<Node> r = CreateObject<Node> ();
Ptr<Node> n1 = CreateObject<Node> ();
NodeContainer net1 (n0, r);
NodeContainer net2 (r, n1);
NodeContainer all (n0, r, n1);
NS_LOG_INFO ("Create IPv6 Internet Stack");
InternetStackHelper internetv6;
internetv6.Install (all);
NS_LOG_INFO ("Create channels.");
CsmaHelper csma;
csma.SetChannelAttribute ("DataRate", DataRateValue (5000000));
csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
NetDeviceContainer d1 = csma.Install (net1);
NetDeviceContainer d2 = csma.Install (net2);
NS_LOG_INFO ("Create networks and assign IPv6 Addresses.");
Ipv6AddressHelper ipv6;
ipv6.SetBase (Ipv6Address ("2001:1::"), Ipv6Prefix (64));
Ipv6InterfaceContainer i1 = ipv6.Assign (d1);
i1.SetForwarding (1, true);
i1.SetDefaultRouteInAllNodes (1);
ipv6.SetBase (Ipv6Address ("2001:2::"), Ipv6Prefix (64));
Ipv6InterfaceContainer i2 = ipv6.Assign (d2);
i2.SetForwarding (0, true);
i2.SetDefaultRouteInAllNodes (0);
Ipv6StaticRoutingHelper routingHelper;
Ptr<OutputStreamWrapper> routingStream = Create<OutputStreamWrapper> (&std::cout);
routingHelper.PrintRoutingTableAt (Seconds (0), n0, routingStream);
/* Create a Ping6 application to send ICMPv6 echo request from n0 to n1 via r */
uint32_t packetSize = 4096;
uint32_t maxPacketCount = 5;
Time interPacketInterval = Seconds (1.0);
Ping6Helper ping6;
ping6.SetLocal (i1.GetAddress (0, 1));
ping6.SetRemote (i2.GetAddress (1, 1));
ping6.SetAttribute ("MaxPackets", UintegerValue (maxPacketCount));
ping6.SetAttribute ("Interval", TimeValue (interPacketInterval));
ping6.SetAttribute ("PacketSize", UintegerValue (packetSize));
ApplicationContainer apps = ping6.Install (net1.Get (0));
apps.Start (Seconds (2.0));
apps.Stop (Seconds (20.0));
AsciiTraceHelper ascii;
csma.EnableAsciiAll (ascii.CreateFileStream ("fragmentation-ipv6.tr"));
csma.EnablePcapAll (std::string ("fragmentation-ipv6"), true);
NS_LOG_INFO ("Run Simulation.");
Simulator::Run ();
Simulator::Destroy ();
NS_LOG_INFO ("Done.");
}