NS3仿真 csma和RIPv2（附源码）

前言

做了两个NS3仿真实验
分别是关于csma和ripv2的
在此记录一下

读者可参考
不可照抄剽窃

如有建议
欢迎交流

1、csma

原理就不做介绍了，网上搜搜就有

实验目的是

• 验证CSMA的性能
• 画出网络吞吐量S随网络数据到达率G之间的关系图

直接上代码

// Network topology
//
//                            Lan1
//                      ================
//                      |    |    |    |
//       n0   n1   n2   n3   n4   n5   n6
//       |    |    |    |     
//       ================        
//           Lan0         
// n0是源头，在n6收数据，每个节点抓包

#include 
#include 
#include 
#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/csma-module.h"
#include "ns3/applications-module.h"
#include "ns3/internet-module.h"
#include "ns3/ipv4-global-routing-helper.h"

using namespace ns3;
NS_LOG_COMPONENT_DEFINE("CsmaMulticastExample");

int main(int argc, char *argv[])
{
 LogComponentEnable("CsmaMulticastExample", LOG_LEVEL_INFO);
 Config::SetDefault("ns3::CsmaNetDevice::EncapsulationMode", StringValue("Dix")); //封装
 CommandLine cmd;
 cmd.Parse(argc, argv);

 // 创建节点
 NS_LOG_INFO("Create nodes.");
 NodeContainer c;
 c.Create(7);
 NodeContainer c0 = NodeContainer(c.Get (0), c.Get (1), c.Get (2), c.Get (3));
 NodeContainer c1 = NodeContainer(c.Get (3), c.Get (4), c.Get (5), c.Get (6));
 
 // 网络拓扑
 NS_LOG_INFO("Build Topology.");
 CsmaHelper csma;
 csma.SetChannelAttribute("DataRate", DataRateValue(DataRate(5000000)));
 csma.SetChannelAttribute("Delay", TimeValue(MilliSeconds(2)));
 NetDeviceContainer nd0 = csma.Install(c0); 
 NetDeviceContainer nd1 = csma.Install(c1);

 // 协议栈
 NS_LOG_INFO("Add IP Stack.");
 InternetStackHelper internet;
 internet.Install(c);

 // IP地址
 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);
 Ipv4Address multicastSource("10.1.1.1");
 Ipv4Address multicastGroup("225.1.2.4");
 
 // 路由
 NS_LOG_INFO("Configure multicasting.");
 Ipv4StaticRoutingHelper multicast;
 Ptr<Node> multicastRouter = c.Get(3); 
 Ptr<NetDevice> inputIf = nd0.Get(3); 
 NetDeviceContainer outputDevices;
 outputDevices.Add(nd1.Get(0));
 multicast.AddMulticastRoute(multicastRouter, multicastSource, multicastGroup, inputIf, outputDevices);
 Ptr<Node> sender = c.Get(0); 
 Ptr<NetDevice> senderIf = nd0.Get(0);
 multicast.SetDefaultMulticastRoute (sender, senderIf);
 //Ptr sender1 = c.Get(3);
 //Ptr senderIf1 = nd1.Get(3);
 //multicast.SetDefaultMulticastRoute (sender, senderIf);

 // 应用
 NS_LOG_INFO("Create Applications.");
 uint16_t multicastPort = 9;
 OnOffHelper onoff("ns3::UdpSocketFactory", Address(InetSocketAddress(multicastGroup, multicastPort)));
 onoff.SetConstantRate(DataRate("255b/s"));
 onoff.SetAttribute("PacketSize", UintegerValue(128));
 ApplicationContainer app = onoff.Install(c0.Get(0));
 app.Start(Seconds (1.));
 app.Stop(Seconds (10.));
 PacketSinkHelper sink("ns3::UdpSocketFactory", 
        InetSocketAddress(Ipv4Address::GetAny(), multicastPort)); 
 ApplicationContainer sinkC = sink.Install(c1.Get(3));
 sinkC.Start(Seconds (1.0));
 sinkC.Stop(Seconds (12.0));

 // 跟踪
 NS_LOG_INFO("Configure Tracing.");
 AsciiTraceHelper ascii;
 csma.EnableAsciiAll(ascii.CreateFileStream("csma.tr"));
 csma.EnablePcapAll("csma", true);
 
 // 启动
 NS_LOG_INFO("Run Simulation.");
 Simulator::Run();
 Simulator::Destroy();
 NS_LOG_INFO("Done.");
}

在跟踪里设置了trace文件
通过trace文件可以计算吞吐量S
修改发包速率不断进行实验

最终应得到类似结果如下

2、RIPv2

RIP是最基本的路由协议，也不多做介绍了

实验目的是

• 验证RIP路由协议的收敛性
• 验证RIP路由协议的路由恢复能力

同样直接上代码

// 网络拓扑
//        SRC
//         |<=== source network
//         A------C
//        /  \    |
//       /    \   |
//      B      \  |
//       \      \ |
//        \      \|
//         E------D
//         |<=== target network
//        DST
//
//
//
// BE之间 cost 10，其他 cost 1
// ABCDE是 RIP router，src 和 dst交换数据包
// 程序运行190s，100s时断开DE

#include 
#include "ns3/core-module.h"
#include "ns3/internet-module.h"
#include "ns3/csma-module.h"
#include "ns3/internet-apps-module.h"
#include "ns3/ipv4-static-routing-helper.h"
#include "ns3/ipv4-routing-table-entry.h"

using namespace ns3;
NS_LOG_COMPONENT_DEFINE("RipRouting");

// 打断路由连接的函数
void TearDownLink(Ptr<Node> nodeA, Ptr<Node> nodeB, uint32_t interfaceA, uint32_t interfaceB)
{
 nodeA->GetObject<Ipv4>()->SetDown(interfaceA);
 nodeB->GetObject<Ipv4>()->SetDown(interfaceB);
}

int main(int argc, char** argv)
{
 bool verbose = false;
 bool printRoutingTables = true;
 bool showPings = true;
 std::string SplitHorizon("PoisonReverse");
 CommandLine cmd;
 cmd.AddValue("verbose", "turn on log components", verbose);
 cmd.AddValue("printRoutingTables", "Print routing tables at 30, 60 and 90 seconds", printRoutingTables);
 cmd.AddValue("showPings", "Show Ping6 reception", showPings);
 cmd.AddValue("splitHorizonStrategy", "Split Horizon strategy to use (NoSplitHorizon, SplitHorizon, PoisonReverse)", SplitHorizon);
 cmd.Parse(argc, argv);
 
 if (verbose)
 {
  LogComponentEnableAll(LogLevel(LOG_PREFIX_TIME | LOG_PREFIX_NODE));
  LogComponentEnable("RipSimpleRouting", LOG_LEVEL_INFO);
  LogComponentEnable("Rip", LOG_LEVEL_ALL);
  LogComponentEnable("Ipv4Interface", LOG_LEVEL_ALL);
  LogComponentEnable("Icmpv4L4Protocol", LOG_LEVEL_ALL);
  LogComponentEnable("Ipv4L3Protocol", LOG_LEVEL_ALL);
  LogComponentEnable("ArpCache", LOG_LEVEL_ALL);
  LogComponentEnable("V4Ping", LOG_LEVEL_ALL);
 }
 
 if (SplitHorizon == "NoSplitHorizon")
 {
  Config::SetDefault("ns3::Rip::SplitHorizon", EnumValue(RipNg::NO_SPLIT_HORIZON));
 }
 else if (SplitHorizon == "SplitHorizon")
 {
  Config::SetDefault("ns3::Rip::SplitHorizon", EnumValue(RipNg::SPLIT_HORIZON));
 }
 else
 {
  Config::SetDefault("ns3::Rip::SplitHorizon", EnumValue(RipNg::POISON_REVERSE));
 }
 
 // 创建节点
 NS_LOG_INFO("Create nodes.");
 Ptr<Node> src = CreateObject<Node>();
 Names::Add("SrcNode", src);
 Ptr<Node> dst = CreateObject<Node>();
 Names::Add("DstNode", dst);
 Ptr<Node> a = CreateObject<Node>();
 Names::Add("RouterA", a);
 Ptr<Node> b = CreateObject<Node>();
 Names::Add("RouterB", b);
 Ptr<Node> c = CreateObject<Node>();
 Names::Add("RouterC", c);
 Ptr<Node> d = CreateObject<Node>();
 Names::Add("RouterD", d);
 Ptr<Node> e = CreateObject<Node>();
 Names::Add("RouterE", e);
 NodeContainer net1(src, a);
 NodeContainer net2(a, b);
 NodeContainer net3(b, e);
 NodeContainer net4(a, c);
 NodeContainer net5(c, d);
 NodeContainer net6(d, e);
 NodeContainer net7(a, d);
 NodeContainer net8(e, dst);
 NodeContainer routers(a, b, c, d, e);
 NodeContainer nodes(src, dst);
 
 // 创建拓扑
 NS_LOG_INFO("Create channels.");
 CsmaHelper csma;
 csma.SetChannelAttribute("DataRate", DataRateValue(5000000));
 csma.SetChannelAttribute("Delay", TimeValue(MilliSeconds(2)));
 NetDeviceContainer ndc1 = csma.Install(net1);
 NetDeviceContainer ndc2 = csma.Install(net2);
 NetDeviceContainer ndc3 = csma.Install(net3);
 NetDeviceContainer ndc4 = csma.Install(net4);
 NetDeviceContainer ndc5 = csma.Install(net5);
 NetDeviceContainer ndc6 = csma.Install(net6);
 NetDeviceContainer ndc7 = csma.Install(net7);
 NetDeviceContainer ndc8 = csma.Install(net8);

 // 路由与IP
 NS_LOG_INFO("Create IPv4 and routing");
 RipHelper ripRouting;
 ripRouting.ExcludeInterface(a, 1);
 ripRouting.ExcludeInterface(e, 3);
 ripRouting.SetInterfaceMetric(b, 3, 10);
 ripRouting.SetInterfaceMetric(e, 1, 10);
 Ipv4ListRoutingHelper listRH;
 listRH.Add(ripRouting, 0);

 NS_LOG_INFO("Add IP Stack.");
 InternetStackHelper internet;
 internet.SetIpv6StackInstall(false);
 internet.SetRoutingHelper(listRH);
 internet.Install(routers);
 InternetStackHelper internetNodes;
 internetNodes.SetIpv6StackInstall(false);
 internetNodes.Install(nodes);

 NS_LOG_INFO("Assign IPv4 Addresses.");
 Ipv4AddressHelper ipv4;
 ipv4.SetBase(Ipv4Address("10.0.0.0"), Ipv4Mask("255.255.255.0"));
 Ipv4InterfaceContainer iic1 = ipv4.Assign(ndc1);
 ipv4.SetBase(Ipv4Address("10.0.1.0"), Ipv4Mask("255.255.255.0"));
 Ipv4InterfaceContainer iic2 = ipv4.Assign(ndc2);
 ipv4.SetBase(Ipv4Address("10.0.2.0"), Ipv4Mask("255.255.255.0"));
 Ipv4InterfaceContainer iic3 = ipv4.Assign(ndc3);
 ipv4.SetBase(Ipv4Address("10.0.3.0"), Ipv4Mask("255.255.255.0"));
 Ipv4InterfaceContainer iic4 = ipv4.Assign(ndc4);
 ipv4.SetBase(Ipv4Address("10.0.4.0"), Ipv4Mask("255.255.255.0"));
 Ipv4InterfaceContainer iic5 = ipv4.Assign(ndc5);
 ipv4.SetBase(Ipv4Address("10.0.5.0"), Ipv4Mask("255.255.255.0"));
 Ipv4InterfaceContainer iic6 = ipv4.Assign(ndc6);
 ipv4.SetBase(Ipv4Address("10.0.6.0"), Ipv4Mask("255.255.255.0"));
 Ipv4InterfaceContainer iic7 = ipv4.Assign(ndc7);
 ipv4.SetBase(Ipv4Address("10.0.7.0"), Ipv4Mask("255.255.255.0"));
 Ipv4InterfaceContainer iic8 = ipv4.Assign(ndc8);
 
 Ptr<Ipv4StaticRouting> staticRouting;
 staticRouting = Ipv4RoutingHelper::GetRouting <Ipv4StaticRouting>(src->GetObject<Ipv4>()->GetRoutingProtocol());
 staticRouting->SetDefaultRoute("10.0.0.2", 1);
 staticRouting = Ipv4RoutingHelper::GetRouting <Ipv4StaticRouting>(dst->GetObject<Ipv4>()->GetRoutingProtocol());
 staticRouting->SetDefaultRoute("10.0.7.1", 1);

 // 打印routing table
 if (printRoutingTables)
 {
  RipHelper routingHelper;
  Ptr<OutputStreamWrapper> routingStream = Create<OutputStreamWrapper>(&std::cout);
 
  // 设置打印时间
  routingHelper.PrintRoutingTableAt(Seconds(1.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(1.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(1.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(1.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(1.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(2.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(2.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(2.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(2.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(2.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(3.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(3.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(3.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(3.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(3.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(4.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(4.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(4.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(4.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(4.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(4.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(4.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(4.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(4.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(4.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(5.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(5.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(5.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(5.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(5.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(6.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(6.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(6.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(6.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(6.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(7.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(7.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(7.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(7.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(7.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(8.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(8.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(8.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(8.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(8.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(9.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(9.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(9.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(9.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(9.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(10.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(10.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(10.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(10.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(10.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(99.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(99.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(99.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(99.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(99.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(100.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(100.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(100.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(100.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(100.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(101.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(101.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(101.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(101.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(101.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(102.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(102.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(102.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(102.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(102.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(103.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(103.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(103.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(103.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(103.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(104.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(104.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(104.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(104.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(104.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(105.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(105.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(105.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(105.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(105.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(106.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(106.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(106.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(106.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(106.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(107.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(107.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(107.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(107.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(107.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(108.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(108.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(108.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(108.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(108.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(109.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(109.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(109.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(109.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(109.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(110.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(110.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(110.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(110.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(110.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(111.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(111.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(111.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(111.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(111.0), e, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(112.0), a, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(112.0), b, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(112.0), c, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(112.0), d, routingStream);
  routingHelper.PrintRoutingTableAt(Seconds(112.0), e, routingStream);
 }

 // 应用
 NS_LOG_INFO("Create Applications.");
 uint32_t packetSize = 1024;
 Time interPacketInterval = Seconds(1.0);
 V4PingHelper ping("10.0.7.2"); 
 ping.SetAttribute("Interval", TimeValue(interPacketInterval));
 ping.SetAttribute("Size", UintegerValue(packetSize));
 if (showPings)
 {
  ping.SetAttribute("Verbose", BooleanValue(true));
 }
 ApplicationContainer apps = ping.Install(src);
 apps.Start(Seconds(1.0));
 apps.Stop(Seconds(190.0)); // 应用的时间

 // 跟踪
 NS_LOG_INFO("Configure Tracing.");
 AsciiTraceHelper ascii;
 csma.EnableAsciiAll(ascii.CreateFileStream("rip.tr"));
 csma.EnablePcapAll("rip", true);

 // 断开AD
 Simulator::Schedule(Seconds(100), &TearDownLink, d, e, 3, 2);
 
 // 启动
 NS_LOG_INFO("Run Simulation.");
 Simulator::Stop(Seconds(200.0));
 Simulator::Run();
 Simulator::Destroy();
 NS_LOG_INFO("Done.");
}

通过打印得到的路由表
可以对RIP的收敛性和恢复能力做观察

结语

也就做了这两个NS3仿真实验

读者可参考
不可照抄剽窃

如有建议或指教
欢迎交流