128 lines
4.3 KiB
C++
128 lines
4.3 KiB
C++
/*
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* SPDX-License-Identifier: GPL-2.0-only
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*
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*/
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// Test program for this 3-router scenario, using static routing
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//
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// (a.a.a.a/32)A<--x.x.x.0/30-->B<--y.y.y.0/30-->C(c.c.c.c/32)
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#include "ns3/applications-module.h"
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#include "ns3/core-module.h"
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#include "ns3/csma-module.h"
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#include "ns3/internet-module.h"
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#include "ns3/ipv4-static-routing-helper.h"
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#include "ns3/network-module.h"
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#include "ns3/point-to-point-module.h"
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#include <cassert>
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#include <fstream>
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#include <iostream>
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#include <string>
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using namespace ns3;
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NS_LOG_COMPONENT_DEFINE("StaticRoutingSlash32Test");
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int
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main(int argc, char* argv[])
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{
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// Allow the user to override any of the defaults and the above
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// DefaultValue::Bind ()s at run-time, via command-line arguments
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CommandLine cmd(__FILE__);
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cmd.Parse(argc, argv);
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Ptr<Node> nA = CreateObject<Node>();
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Ptr<Node> nB = CreateObject<Node>();
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Ptr<Node> nC = CreateObject<Node>();
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NodeContainer c = NodeContainer(nA, nB, nC);
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InternetStackHelper internet;
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internet.Install(c);
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// Point-to-point links
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NodeContainer nAnB = NodeContainer(nA, nB);
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NodeContainer nBnC = NodeContainer(nB, nC);
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// We create the channels first without any IP addressing information
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PointToPointHelper p2p;
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p2p.SetDeviceAttribute("DataRate", StringValue("5Mbps"));
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p2p.SetChannelAttribute("Delay", StringValue("2ms"));
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NetDeviceContainer dAdB = p2p.Install(nAnB);
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NetDeviceContainer dBdC = p2p.Install(nBnC);
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Ptr<CsmaNetDevice> deviceA = CreateObject<CsmaNetDevice>();
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deviceA->SetAddress(Mac48Address::Allocate());
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nA->AddDevice(deviceA);
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deviceA->SetQueue(CreateObject<DropTailQueue<Packet>>());
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Ptr<CsmaNetDevice> deviceC = CreateObject<CsmaNetDevice>();
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deviceC->SetAddress(Mac48Address::Allocate());
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nC->AddDevice(deviceC);
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deviceC->SetQueue(CreateObject<DropTailQueue<Packet>>());
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// Later, we add IP addresses.
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Ipv4AddressHelper ipv4;
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ipv4.SetBase("10.1.1.0", "255.255.255.252");
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Ipv4InterfaceContainer iAiB = ipv4.Assign(dAdB);
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ipv4.SetBase("10.1.1.4", "255.255.255.252");
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Ipv4InterfaceContainer iBiC = ipv4.Assign(dBdC);
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Ptr<Ipv4> ipv4A = nA->GetObject<Ipv4>();
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Ptr<Ipv4> ipv4B = nB->GetObject<Ipv4>();
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Ptr<Ipv4> ipv4C = nC->GetObject<Ipv4>();
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int32_t ifIndexA = ipv4A->AddInterface(deviceA);
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int32_t ifIndexC = ipv4C->AddInterface(deviceC);
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Ipv4InterfaceAddress ifInAddrA =
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Ipv4InterfaceAddress(Ipv4Address("172.16.1.1"), Ipv4Mask("/32"));
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ipv4A->AddAddress(ifIndexA, ifInAddrA);
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ipv4A->SetMetric(ifIndexA, 1);
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ipv4A->SetUp(ifIndexA);
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Ipv4InterfaceAddress ifInAddrC =
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Ipv4InterfaceAddress(Ipv4Address("192.168.1.1"), Ipv4Mask("/32"));
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ipv4C->AddAddress(ifIndexC, ifInAddrC);
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ipv4C->SetMetric(ifIndexC, 1);
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ipv4C->SetUp(ifIndexC);
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Ipv4StaticRoutingHelper ipv4RoutingHelper;
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// Create static routes from A to C
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Ptr<Ipv4StaticRouting> staticRoutingA = ipv4RoutingHelper.GetStaticRouting(ipv4A);
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// The ifIndex for this outbound route is 1; the first p2p link added
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staticRoutingA->AddHostRouteTo(Ipv4Address("192.168.1.1"), Ipv4Address("10.1.1.2"), 1);
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Ptr<Ipv4StaticRouting> staticRoutingB = ipv4RoutingHelper.GetStaticRouting(ipv4B);
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// The ifIndex we want on node B is 2; 0 corresponds to loopback, and 1 to the first point to
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// point link
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staticRoutingB->AddHostRouteTo(Ipv4Address("192.168.1.1"), Ipv4Address("10.1.1.6"), 2);
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// Create the OnOff application to send UDP datagrams of size
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// 210 bytes at a rate of 448 Kb/s
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uint16_t port = 9; // Discard port (RFC 863)
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OnOffHelper onoff("ns3::UdpSocketFactory",
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Address(InetSocketAddress(ifInAddrC.GetLocal(), port)));
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onoff.SetConstantRate(DataRate(6000));
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ApplicationContainer apps = onoff.Install(nA);
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apps.Start(Seconds(1));
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apps.Stop(Seconds(10));
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// Create a packet sink to receive these packets
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PacketSinkHelper sink("ns3::UdpSocketFactory",
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Address(InetSocketAddress(Ipv4Address::GetAny(), port)));
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apps = sink.Install(nC);
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apps.Start(Seconds(1));
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apps.Stop(Seconds(10));
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AsciiTraceHelper ascii;
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p2p.EnableAsciiAll(ascii.CreateFileStream("static-routing-slash32.tr"));
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p2p.EnablePcapAll("static-routing-slash32");
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Simulator::Run();
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Simulator::Destroy();
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return 0;
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}
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