201 lines
7.3 KiB
C++
201 lines
7.3 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
|
|
/*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation;
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
//
|
|
// Network topology
|
|
//
|
|
// n0
|
|
// \ 5 Mb/s, 2ms
|
|
// \ 1.5Mb/s, 10ms
|
|
// n2 ------------------------n3
|
|
// / /
|
|
// / 5 Mb/s, 2ms /
|
|
// n1--------------------------
|
|
// 1.5 Mb/s, 100ms
|
|
//
|
|
// this is a modification of simple-global-routing to allow for
|
|
// a single hop but higher-cost path between n1 and n3
|
|
//
|
|
// - Tracing of queues and packet receptions to file "simple-rerouting.tr"
|
|
|
|
#include <iostream>
|
|
#include <fstream>
|
|
#include <string>
|
|
#include <cassert>
|
|
|
|
#include "ns3/core-module.h"
|
|
#include "ns3/simulator-module.h"
|
|
#include "ns3/helper-module.h"
|
|
#include "ns3/global-route-manager.h"
|
|
#include "ns3/ascii-trace.h"
|
|
#include "ns3/pcap-trace.h"
|
|
|
|
using namespace ns3;
|
|
|
|
NS_LOG_COMPONENT_DEFINE ("SimpleAlternateRoutingExample");
|
|
|
|
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("GlobalRouteManager", LOG_LOGIC);
|
|
LogComponentEnable("GlobalRouter", LOG_LOGIC);
|
|
LogComponentEnable("Object", LOG_LEVEL_ALL);
|
|
LogComponentEnable("Queue", LOG_LEVEL_ALL);
|
|
LogComponentEnable("DropTailQueue", LOG_LEVEL_ALL);
|
|
LogComponentEnable("Channel", LOG_LEVEL_ALL);
|
|
LogComponentEnable("CsmaChannel", LOG_LEVEL_ALL);
|
|
LogComponentEnable("NetDevice", LOG_LEVEL_ALL);
|
|
LogComponentEnable("CsmaNetDevice", LOG_LEVEL_ALL);
|
|
LogComponentEnable("Ipv4L3Protocol", LOG_LEVEL_ALL);
|
|
LogComponentEnable("PacketSocket", LOG_LEVEL_ALL);
|
|
LogComponentEnable("Socket", LOG_LEVEL_ALL);
|
|
LogComponentEnable("UdpSocket", LOG_LEVEL_ALL);
|
|
LogComponentEnable("UdpL4Protocol", LOG_LEVEL_ALL);
|
|
LogComponentEnable("Ipv4L3Protocol", LOG_LEVEL_ALL);
|
|
LogComponentEnable("Ipv4StaticRouting", LOG_LEVEL_ALL);
|
|
LogComponentEnable("Ipv4Interface", LOG_LEVEL_ALL);
|
|
LogComponentEnable("ArpIpv4Interface", LOG_LEVEL_ALL);
|
|
LogComponentEnable("Ipv4LoopbackInterface", LOG_LEVEL_ALL);
|
|
LogComponentEnable("OnOffApplication", LOG_LEVEL_ALL);
|
|
LogComponentEnable("PacketSinkApplication", LOG_LEVEL_ALL);
|
|
LogComponentEnable("UdpEchoClientApplication", LOG_LEVEL_ALL);
|
|
LogComponentEnable("UdpEchoServerApplication", LOG_LEVEL_ALL);
|
|
#endif
|
|
// Set up some default values for the simulation. Use the
|
|
// DefaultValue::Bind () technique to tell the system what subclass of
|
|
// Queue to use, and what the queue limit is
|
|
|
|
|
|
Config::SetDefault ("ns3::OnOffApplication::PacketSize", Uinteger (210));
|
|
Config::SetDefault ("ns3::OnOffApplication::DataRate", DataRate ("300b/s"));
|
|
|
|
// The below metric, if set to 3 or higher, will cause packets between
|
|
// n1 and n3 to take the 2-hop route through n2
|
|
|
|
CommandLine cmd;
|
|
//
|
|
// Additionally, we plumb this metric into the default value / command
|
|
// line argument system as well, for exemplary purposes. This means
|
|
// that it can be resettable at the command-line to the program,
|
|
// rather than recompiling
|
|
// e.g. waf --run "simple-alternate-routing --AlternateCost=5"
|
|
uint16_t sampleMetric = 1;
|
|
cmd.AddValue ("AlternateCost",
|
|
"This metric is used in the example script between n3 and n1 ",
|
|
sampleMetric);
|
|
|
|
// Allow the user to override any of the defaults and the above
|
|
// DefaultValue::Bind ()s at run-time, via command-line arguments
|
|
cmd.Parse (argc, argv);
|
|
|
|
// Here, we will explicitly create four nodes. In more sophisticated
|
|
// topologies, we could configure a node factory.
|
|
NS_LOG_INFO ("Create nodes.");
|
|
NodeContainer c;
|
|
c.Create (4);
|
|
NodeContainer n0n2 = NodeContainer (c.Get (0), c.Get (2));
|
|
NodeContainer n1n2 = NodeContainer (c.Get (1), c.Get (2));
|
|
NodeContainer n3n2 = NodeContainer (c.Get (3), c.Get (2));
|
|
NodeContainer n1n3 = NodeContainer (c.Get (1), c.Get (3));
|
|
|
|
// We create the channels first without any IP addressing information
|
|
NS_LOG_INFO ("Create channels.");
|
|
PointToPointHelper p2p;
|
|
p2p.SetChannelParameter ("BitRate", DataRate (5000000));
|
|
p2p.SetChannelParameter ("Delay", MilliSeconds (2));
|
|
NetDeviceContainer d0d2 = p2p.Build (n0n2);
|
|
|
|
NetDeviceContainer d1d2 = p2p.Build (n1n2);
|
|
|
|
p2p.SetChannelParameter ("BitRate", DataRate(1500000));
|
|
p2p.SetChannelParameter ("Delay", MilliSeconds (10));
|
|
NetDeviceContainer d3d2 = p2p.Build (n3n2);
|
|
|
|
p2p.SetChannelParameter ("Delay", MilliSeconds (100));
|
|
NetDeviceContainer d1d3 = p2p.Build (n1n3);
|
|
|
|
InternetStackHelper internet;
|
|
internet.Build (c);
|
|
|
|
// Later, we add IP addresses. The middle two octets correspond to
|
|
// the channel number.
|
|
NS_LOG_INFO ("Assign IP Addresses.");
|
|
Ipv4AddressHelper ipv4;
|
|
ipv4.SetBase ("10.0.0.0", "255.255.255.0");
|
|
ipv4.Allocate (d0d2);
|
|
|
|
ipv4.SetBase ("10.1.1.0", "255.255.255.0");
|
|
Ipv4InterfaceContainer i1i2 = ipv4.Allocate (d1d2);
|
|
|
|
ipv4.SetBase ("10.2.2.0", "255.255.255.0");
|
|
ipv4.Allocate (d3d2);
|
|
|
|
ipv4.SetBase ("10.3.3.0", "255.255.255.0");
|
|
Ipv4InterfaceContainer i1i3 = ipv4.Allocate (d1d3);
|
|
|
|
i1i3.SetMetric (0, sampleMetric);
|
|
i1i3.SetMetric (1, sampleMetric);
|
|
|
|
// Create router nodes, initialize routing database and set up the routing
|
|
// tables in the nodes.
|
|
GlobalRouteManager::PopulateRoutingTables ();
|
|
|
|
// Create the OnOff application to send UDP datagrams
|
|
NS_LOG_INFO ("Create Application.");
|
|
uint16_t port = 9; // Discard port (RFC 863)
|
|
|
|
// Create a flow from n3 to n1, starting at time 1.1 seconds
|
|
OnOffHelper onoff;
|
|
onoff.SetAppAttribute ("OnTime", ConstantVariable (1));
|
|
onoff.SetAppAttribute ("OffTime", ConstantVariable (0));
|
|
onoff.SetUdpRemote (i1i2.GetAddress (0), port);
|
|
ApplicationContainer apps = onoff.Build (c.Get (3));
|
|
apps.Start (Seconds (1.1));
|
|
apps.Start (Seconds (10.0));
|
|
|
|
// Create a packet sink to receive these packets
|
|
PacketSinkHelper sink;
|
|
sink.SetupUdp (Ipv4Address::GetAny (), port);
|
|
apps = sink.Build (c.Get (1));
|
|
apps.Start (Seconds (1.1));
|
|
apps.Stop (Seconds (10.0));
|
|
|
|
// Configure tracing of all enqueue, dequeue, and NetDevice receive events
|
|
// Trace output will be sent to the simple-alternate-routing.tr file
|
|
NS_LOG_INFO ("Configure Tracing.");
|
|
AsciiTrace asciitrace ("simple-alternate-routing.tr");
|
|
asciitrace.TraceAllQueues ();
|
|
asciitrace.TraceAllNetDeviceRx ();
|
|
|
|
// Also configure some tcpdump traces; each interface will be traced
|
|
// The output files will be named simple-p2p.pcap-<nodeId>-<interfaceId>
|
|
// and can be read by the "tcpdump -r" command (use "-tt" option to
|
|
// display timestamps correctly)
|
|
PcapTrace pcaptrace ("simple-alternate-routing.pcap");
|
|
pcaptrace.TraceAllIp ();
|
|
|
|
NS_LOG_INFO ("Run Simulation.");
|
|
Simulator::Run ();
|
|
Simulator::Destroy ();
|
|
NS_LOG_INFO ("Done.");
|
|
|
|
return 0;
|
|
}
|