Steps to Develop Simple Network Protocol Projects Using NS3

To develop the Simple Network Protocol (SNP) it used the several methods. Here’s how we can simulate SNMP-related projects using NS3:

Steps to Develop Simple Network Protocol Projects Using NS3

Introduction to Simple Network Protocol (SNP)

The Simple Network Protocol (SNP) is simple custom network layer protocols which manage the packet forwarding and routing in basic method. SNP is useful for:

✅ It is a simple replication for network routing

✅ Educational purposes such as investigate the packet forwarding mechanisms)

✅ Lightweight networks for instance IoT, sensor networks, etc.

Setting up NS-3 for Simple Network Protocol Development

(a) Install and download the tool NS3 in your system

sudo apt update

sudo apt install git g++ python3 python3-pip cmake

git clone

cd ns-3-dev

./ns3 configure –enable-examples –enable-tests

./ns3 build

Implementing Simple Network Protocol (SNP) in NS-3

SNP is custom routing protocol that:

Transmit the packets terms on basic routing table.
It cannot utilize the difficult for link-state or distance vector procedures.
We manage the unicast and simple transmission messages.

Step 1: Create an SNP Routing Class

State the SNP Routing Class in snp-routing.h

#ifndef SNP_ROUTING_H

#define SNP_ROUTING_H

#include “ns3/ipv4-routing-protocol.h”

#include “ns3/ipv4-route.h”

#include “ns3/packet.h”

#include “ns3/socket.h”

#include <map>

class SnpRouting : public ns3::Ipv4RoutingProtocol {

public:

static ns3::TypeId GetTypeId(void);

SnpRouting();

virtual ~SnpRouting();

virtual ns3::Ptr<ns3::Ipv4Route> RouteOutput(

ns3::Ptr<ns3::Packet> packet,

const ns3::Ipv4Header &header,

ns3::Ptr<ns3::NetDevice> oif,

ns3::Socket::SocketErrno &sockerr) override;

virtual bool RouteInput(

ns3::Ptr<const ns3::Packet> packet,

const ns3::Ipv4Header &header,

ns3::Ptr<const ns3::NetDevice> idev,

UnicastForwardCallback ucb,

MulticastForwardCallback mcb,

LocalDeliverCallback lcb,

ErrorCallback ecb) override;

void AddRoute(uint32_t destination, uint32_t nextHop);

void PrintRoutingTable();

private:

std::map<uint32_t, uint32_t> m_routingTable;

};

#endif // SNP_ROUTING_H

Step 2: Apply the execution of packet forwarding in SNP

Create snp-routing.cc

#include “snp-routing.h”

#include “ns3/log.h”

NS_LOG_COMPONENT_DEFINE(“SnpRouting”);

NS_OBJECT_ENSURE_REGISTERED(SnpRouting);

ns3::TypeId SnpRouting::GetTypeId(void) {

static ns3::TypeId tid = ns3::TypeId(“ns3::SnpRouting”)

.SetParent<ns3::Ipv4RoutingProtocol>()

.SetGroupName(“Internet”);

return tid;

}

SnpRouting::SnpRouting() {}

SnpRouting::~SnpRouting() {}

ns3::Ptr<ns3::Ipv4Route> SnpRouting::RouteOutput(

ns3::Ptr<ns3::Packet> packet, const ns3::Ipv4Header &header,

ns3::Ptr<ns3::NetDevice> oif, ns3::Socket::SocketErrno &sockerr) {

NS_LOG_INFO(“SNP RouteOutput: Forwarding packet”);

return 0;

}

bool SnpRouting::RouteInput(

ns3::Ptr<const ns3::Packet> packet, const ns3::Ipv4Header &header,

ns3::Ptr<const ns3::NetDevice> idev,

UnicastForwardCallback ucb, MulticastForwardCallback mcb,

LocalDeliverCallback lcb, ErrorCallback ecb) {

NS_LOG_INFO(“SNP RouteInput: Received a packet, checking route”);

uint32_t dst = header.GetDestination().Get();

if (m_routingTable.find(dst) != m_routingTable.end()) {

NS_LOG_INFO(“SNP RouteInput: Forwarding to next hop”);

return true;

}

NS_LOG_INFO(“SNP RouteInput: Destination not found”);

return false;

}

void SnpRouting::AddRoute(uint32_t destination, uint32_t nextHop) {

m_routingTable[destination] = nextHop;

}

void SnpRouting::PrintRoutingTable() {

for (auto route : m_routingTable) {

NS_LOG_INFO(“Destination: ” << route.first << ” Next Hop: ” << route.second);

}

Step 3: Incorporate a SNP in NS-3 replication

Create snp-simulation.cc

#include “ns3/core-module.h”

#include “ns3/network-module.h”

#include “ns3/internet-module.h”

#include “ns3/point-to-point-module.h”

#include “snp-routing.h”

using namespace ns3;

int main() {

NodeContainer nodes;

nodes.Create(3);

PointToPointHelper p2p;

p2p.SetDeviceAttribute(“DataRate”, StringValue(“5Mbps”));

p2p.SetChannelAttribute(“Delay”, StringValue(“2ms”));

NetDeviceContainer devices;

devices = p2p.Install(nodes.Get(0), nodes.Get(1));

devices = p2p.Install(nodes.Get(1), nodes.Get(2));

InternetStackHelper stack;

stack.Install(nodes);

Ptr<SnpRouting> snpRouting = CreateObject<SnpRouting>();

snpRouting->AddRoute(2, 1);

snpRouting->AddRoute(1, 0);

nodes.Get(0)->AggregateObject(snpRouting);

Ipv4AddressHelper address;

address.SetBase(“10.1.1.0”, “255.255.255.0”);

address.Assign(devices);

Simulator::Run();

Simulator::Destroy();

return 0;

}

Step 4: Compile and Run the Simulation

Compile

./waf

Implement the process

./waf –run “scratch/snp-simulation”

Performance Evaluation for SNP

We estimate the SNP routing effectiveness, use FlowMonitor:

Ptr<FlowMonitor> flowMonitor;

FlowMonitorHelper flowHelper;

flowMonitor = flowHelper.InstallAll();

Simulator::Stop(Seconds(10.0));

Simulator::Run();

flowMonitor->SerializeToXmlFile(“snp_results.xml”, true, true);

Run analysis

python3 analyze_results.py

Example Simple Network Protocol Project Ideas in NS-3

✅ 1. SNP-Based Ad Hoc Routing

We apply the execution of lightweight routing protocol for IoT networks.

✅ 2. Secure SNP with Authentication

Adjust the SNP to contain the packet authentication.

✅ 3. Performance Analysis of SNP vs. Traditional Routing (AODV, OSPF)

We calculate the amount of performance metrices such as latency, throughput, and packet loss.

✅ 4. Adaptive SNP with AI-Based Routing

Machine learning used to enhance the packet forwarding.

✅ 5. SNP for Disaster Recovery Networks

For change the SNP to manage an emergency communication.

Through this brief procedure, you can get to understand more about the simulation process and their approaches regarding the Simple Network Management Protocol including sample snippets using ns3 tool. We design to deliver the more information regarding the Simple Network Management Protocol.