Static Routing (Wired)

[Topology]

Test-static-routing1.cc (put the file under scratch)

#include <iostream>

#include <fstream>

#include <string>

#include <cassert>

#include "ns3/core-module.h"

#include "ns3/network-module.h"

#include "ns3/internet-module.h"

#include "ns3/point-to-point-module.h"

#include "ns3/csma-module.h"

#include "ns3/applications-module.h"

#include "ns3/ipv4-static-routing-helper.h"

using namespace ns3;

NS_LOG_COMPONENT_DEFINE ("StaticRoutingSlash32Test");

int

main (int argc, char *argv[])

{

LogComponentEnable ("UdpEchoClientApplication", LOG_LEVEL_INFO);

LogComponentEnable ("UdpEchoServerApplication", LOG_LEVEL_INFO);

CommandLine cmd (__FILE__);

cmd.Parse (argc, argv);

/* Build nodes. */

NodeContainer term_0;

term_0.Create (1);

NodeContainer term_1;

term_1.Create (1);

NodeContainer router_0;

router_0.Create (1);

NodeContainer router_1;

router_1.Create (1);

/* Build link. */

PointToPointHelper p2p_p2p_0;

p2p_p2p_0.SetDeviceAttribute ("DataRate", StringValue ("10Mbps"));

p2p_p2p_0.SetChannelAttribute ("Delay", StringValue ("1ms"));

PointToPointHelper p2p_p2p_1;

p2p_p2p_1.SetDeviceAttribute ("DataRate", StringValue ("10Mbps"));

p2p_p2p_1.SetChannelAttribute ("Delay", StringValue ("1ms"));

PointToPointHelper p2p_p2p_2;

p2p_p2p_2.SetDeviceAttribute ("DataRate", StringValue ("10Mbps"));

p2p_p2p_2.SetChannelAttribute ("Delay", StringValue ("1ms"));

/* Build link net device container. */

NodeContainer all_p2p_0;

all_p2p_0.Add (router_0);

all_p2p_0.Add (term_0);

NetDeviceContainer ndc_p2p_0 = p2p_p2p_0.Install (all_p2p_0);

NodeContainer all_p2p_1;

all_p2p_1.Add (router_0);

all_p2p_1.Add (router_1);

NetDeviceContainer ndc_p2p_1 = p2p_p2p_1.Install (all_p2p_1);

NodeContainer all_p2p_2;

all_p2p_2.Add (router_1);

all_p2p_2.Add (term_1);

NetDeviceContainer ndc_p2p_2 = p2p_p2p_2.Install (all_p2p_2);

/* Install the IP stack. */

InternetStackHelper internetStackH;

internetStackH.Install (term_0);

internetStackH.Install (term_1);

internetStackH.Install (router_0);

internetStackH.Install (router_1);

/* IP assign. */

Ipv4AddressHelper ipv4;

ipv4.SetBase ("10.0.0.0", "255.255.255.0");

Ipv4InterfaceContainer iface_ndc_p2p_0 = ipv4.Assign (ndc_p2p_0);

ipv4.SetBase ("10.0.1.0", "255.255.255.0");

Ipv4InterfaceContainer iface_ndc_p2p_1 = ipv4.Assign (ndc_p2p_1);

ipv4.SetBase ("10.0.2.0", "255.255.255.0");

Ipv4InterfaceContainer iface_ndc_p2p_2 = ipv4.Assign (ndc_p2p_2);

//Ipv4GlobalRoutingHelper::PopulateRoutingTables ();

Ptr<Ipv4> ipv4N0 = term_0.Get (0)->GetObject<Ipv4> ();

Ptr<Ipv4> ipv4R0 = router_0.Get (0)->GetObject<Ipv4> ();

Ptr<Ipv4> ipv4R1 = router_1.Get (0)->GetObject<Ipv4> ();

Ptr<Ipv4> ipv4N1 = term_1.Get (0)->GetObject<Ipv4> ();

Ipv4StaticRoutingHelper ipv4RoutingHelper;

// Create static routes from N0 to R0

Ptr<Ipv4StaticRouting> staticRoutingN0 = ipv4RoutingHelper.GetStaticRouting (ipv4N0);

staticRoutingN0->AddHostRouteTo (Ipv4Address ("10.0.2.2"), Ipv4Address ("10.0.0.1"), 1);

// The ifIndex we want on node R0 is 2; 0 corresponds to loopback, 1 to the first point to point link (N0-R1)

// 2 to the second point to point link (R0-R1)

Ptr<Ipv4StaticRouting> staticRoutingR0 = ipv4RoutingHelper.GetStaticRouting (ipv4R0);

staticRoutingR0->AddHostRouteTo (Ipv4Address ("10.0.2.2"), Ipv4Address ("10.0.1.2"), 2);

staticRoutingR0->AddHostRouteTo (Ipv4Address ("10.0.0.2"), Ipv4Address ("10.0.0.2"), 1);

Ptr<Ipv4StaticRouting> staticRoutingR1 = ipv4RoutingHelper.GetStaticRouting (ipv4R1);

staticRoutingR1->AddHostRouteTo (Ipv4Address ("10.0.2.2"), Ipv4Address ("10.0.2.2"), 2);

staticRoutingR1->AddHostRouteTo (Ipv4Address ("10.0.0.2"), Ipv4Address ("10.0.1.1"), 1);

Ptr<Ipv4StaticRouting> staticRoutingN1 = ipv4RoutingHelper.GetStaticRouting (ipv4N1);

staticRoutingN1->AddHostRouteTo (Ipv4Address ("10.0.0.2"), Ipv4Address ("10.0.2.1"), 1);

UdpEchoServerHelper echoServer (9);

ApplicationContainer serverApps = echoServer.Install (term_1.Get(0));

serverApps.Start (Seconds (1.0));

serverApps.Stop (Seconds (10.0));

UdpEchoClientHelper echoClient (iface_ndc_p2p_2.GetAddress (1), 9);

echoClient.SetAttribute ("MaxPackets", UintegerValue (1));

echoClient.SetAttribute ("Interval", TimeValue (Seconds (1.0)));

echoClient.SetAttribute ("PacketSize", UintegerValue (1024));

ApplicationContainer clientApps =

echoClient.Install (term_0.Get(0));

clientApps.Start (Seconds (2.0));

clientApps.Stop (Seconds (10.0));

Simulator::Stop (Seconds (11.0));

Simulator::Run ();

Simulator::Destroy ();

return 0;

}

Execution

If you remove the red lines, you can only get

The server cannot receive the packet sent from client.

Reference

https://signetlabdei.github.io/lorawan-docs/html/static-routing-slash32_8cc_source.html

Back to NS3 Learning Guide

Last Modified: 2022/2/11 done

[Author]

Dr. Chih-Heng Ke

Department of Computer Science and Information Engineering, National Quemoy University, Kinmen, Taiwan

Email: smallko@gmail.com