Read the following procedures if you face any challenges in implantation then reach us at ns3simulation.com to get best outcome.
Implementing a route source protocol in ns3 includes the following steps :
- Set up your environment
Make sure that ns3 is installed in the computer. If not, install it from the official ns3 website. You should have a basic understanding of ns3.
- Create a new protocol class
By inheriting Ipv4RoutingProtoco, define a new class for your protocol. For this, you have to create a new .h and .cc file.
- Define protocol methods
Implement the necessary methods for your protocol, such as RouteOutput, RouteInput, AddHostRouteTo, AddNetworkRouteTo, and others to handle the routing decisions for packets.
- Integrate with ns3
To include your new protocol, modify the ns-3 build system. This involves updating the wscript file in the src directory to compile your new protocol files.
- Testing and validation
To test your new routing protocol, create a simulation script. This script should set up a network topology, install your routing protocol on the nodes, and run simulations to verify the behavior.
The following are the detailed guide with code snippets for implementing route source protocol .
Steps to implement route source protocol in ns3
- Set up your environment
Make sure that ns3 is installed in the computer. If not, install it from the official ns3 website. Navigate to the src directory where you want to add your protocol.
- Create a new protocol class
Add two files named my-routing-protocol.h and my-routing-protocol.cc in the new directory of your protocol (eg., src/my-routing-protocol/).
my-routing-protocol.h
#ifndef MY_ROUTING_PROTOCOL_H
#define MY_ROUTING_PROTOCOL_H
#include “ns3/ipv4-routing-protocol.h”
#include “ns3/node.h”
#include “ns3/ipv4.h”
#include “ns3/ipv4-routing-table-entry.h”
#include “ns3/ipv4-route.h”
#include “ns3/net-device.h”
namespace ns3 {
class MyRoutingProtocol : public Ipv4RoutingProtocol {
public:
static TypeId GetTypeId (void);
MyRoutingProtocol ();
virtual ~MyRoutingProtocol ();
// Required by Ipv4RoutingProtocol
Ptr<Ipv4Route> RouteOutput (Ptr<Packet> packet, const Ipv4Header &header,
Ptr<NetDevice> oif, Socket::SocketErrno &sockerr);
bool RouteInput (Ptr<const Packet> packet, const Ipv4Header &header,
Ptr<const NetDevice> idev, UnicastForwardCallback ucb,
MulticastForwardCallback mcb, LocalDeliverCallback lcb,
ErrorCallback ecb);
void AddHostRouteTo (Ipv4Address dest, Ipv4Address nextHop, uint32_t interface);
void AddNetworkRouteTo (Ipv4Address network, Ipv4Mask networkMask,
Ipv4Address nextHop, uint32_t interface);
void SetIpv4 (Ptr<Ipv4> ipv4);
private:
Ptr<Ipv4> m_ipv4;
};
} // namespace ns3
#endif // MY_ROUTING_PROTOCOL_H
my-routing-protocol.cc
#include “my-routing-protocol.h”
#include “ns3/log.h”
#include “ns3/ipv4-routing-table-entry.h”
#include “ns3/ipv4-route.h”
#include “ns3/simulator.h”
namespace ns3 {
NS_LOG_COMPONENT_DEFINE (“MyRoutingProtocol”);
NS_OBJECT_ENSURE_REGISTERED (MyRoutingProtocol);
TypeId
MyRoutingProtocol::GetTypeId (void)
{
static TypeId tid = TypeId (“ns3::MyRoutingProtocol”)
.SetParent<Ipv4RoutingProtocol> ()
.SetGroupName (“Internet”)
.AddConstructor<MyRoutingProtocol> ();
return tid;
}
MyRoutingProtocol::MyRoutingProtocol () {
NS_LOG_FUNCTION (this);
}
MyRoutingProtocol::~MyRoutingProtocol () {
NS_LOG_FUNCTION (this);
}
Ptr<Ipv4Route>
MyRoutingProtocol::RouteOutput (Ptr<Packet> packet, const Ipv4Header &header,
Ptr<NetDevice> oif, Socket::SocketErrno &sockerr) {
// Implement your routing logic here
return nullptr;
}
bool
MyRoutingProtocol::RouteInput (Ptr<const Packet> packet, const Ipv4Header &header,
Ptr<const NetDevice> idev, UnicastForwardCallback ucb,
MulticastForwardCallback mcb, LocalDeliverCallback lcb,
ErrorCallback ecb) {
// Implement your routing logic here
return false;
}
void
MyRoutingProtocol::AddHostRouteTo (Ipv4Address dest, Ipv4Address nextHop, uint32_t interface) {
// Implement your routing logic here
}
void
MyRoutingProtocol::AddNetworkRouteTo (Ipv4Address network, Ipv4Mask networkMask,
Ipv4Address nextHop, uint32_t interface) {
// Implement your routing logic here
}
void
MyRoutingProtocol::SetIpv4 (Ptr<Ipv4> ipv4) {
m_ipv4 = ipv4;
}
} // namespace ns3
- Integrate with ns3
To include your new protocol, modify the wscript in the src directory and to ensure that your new files are compiled, add the following lines :
wscript
def build(bld):
…
bld.ns3_add_library(‘my-routing-protocol’,
[‘my-routing-protocol.cc’])
…
- Testing and validation
In the scratch directory, create a simulation script to test your new protocol :
scratch/test-my-routing-protocol.cc
#include “ns3/core-module.h”
#include “ns3/network-module.h”
#include “ns3/internet-module.h”
#include “ns3/point-to-point-module.h”
#include “ns3/my-routing-protocol.h”
using namespace ns3;
int main (int argc, char *argv[]) {
NodeContainer nodes;
nodes.Create (2);
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute (“DataRate”, StringValue (“5Mbps”));
pointToPoint.SetChannelAttribute (“Delay”, StringValue (“2ms”));
NetDeviceContainer devices;
devices = pointToPoint.Install (nodes);
InternetStackHelper stack;
Ptr<MyRoutingProtocol> myRoutingProtocol = CreateObject<MyRoutingProtocol> ();
stack.SetRoutingHelper (myRoutingProtocol);
stack.Install (nodes);
Ipv4AddressHelper address;
address.SetBase (“10.1.1.0”, “255.255.255.0”);
Ipv4InterfaceContainer interfaces = address.Assign (devices);
Simulator::Run ();
Simulator::Destroy ();
return 0;
}
- Build and run the simulation
Build and run your script after writing.
./waf configure
./waf build
./waf –run scratch/ test-my-routing-protocol
Overall, we had successfully implemented the routing source protocol in ns3 by setting up a network topology and by creating a simulation script. Also, we provide more related information on routing source protocol.
If you encounter any difficulties in coding, don’t hesitate to contact us at ns3simulation.com for the best possible solution.