A fully simulated IoT-based Smart Home Sensor Network built in Cisco Packet Tracer. This project covers end-to-end network design, wireless security configuration, IoT device registration, event-driven automation, and quantitative performance analysis.
- Project Overview
- Network Architecture
- Components Used
- Wireless Security
- Automation Rules
- Performance Analysis
- Repository Structure
- Getting Started
- Key Learnings
- Author
This simulation models a smart home environment where sensors continuously monitor environmental parameters and actuators respond intelligently through pre-configured automation logic — all managed via a central IoT Server over a secure Wi-Fi network.
What this project demonstrates:
- Designing a scalable IoT network from scratch in Cisco Packet Tracer
- Configuring DHCP, static IPs, and wireless security (WPA2-PSK/AES)
- Registering and managing 7 heterogeneous IoT devices on a central server
- Writing event-driven automation rules for real-time device control
- Measuring and interpreting PDR, Throughput, and End-to-End Delay
┌─────────────────────────────────────────────────────────┐
│ Wired Backbone │
│ │
│ ┌────────────┐ ┌──────────────┐ │
│ │ IoT Server │──────│ Switch │ │
│ │192.168.0.10│ │ 2960-24TT │──── PC │
│ └────────────┘ └──────┬───────┘ │
│ │ │
│ ┌────────┴────────┐ │
│ │ Wireless Router │ │
│ │ WRT300N │ │
│ │ 192.168.0.1 │ │
│ └────────┬────────┘ │
└───────────────────────────────┼───────────────────────────┘
│ Wi-Fi · SSID: IoT_Wireless
┌──────────┬──────────┼──────────┬──────────┬────────────┐
│ │ │ │ │ │
Motion Sensor Door Temp Smart Smart Smoke +
Sensor Sensor Light Fan Camera +
Smartphone
(All via DHCP: 192.168.0.100–149)
Topology: Star — Switch as central hub, Router as wireless access point.
| Device | IP Address | Type |
|---|---|---|
| IoT Server | 192.168.0.10 | Static |
| Wireless Router | 192.168.0.1 | Static (Gateway) |
| All IoT Devices | 192.168.0.100 – 149 | DHCP |
| # | Device | Model | Function |
|---|---|---|---|
| 1 | IoT Server | Server-PT | Central hub: registration, automation, data |
| 2 | Network Switch | Cisco 2960-24TT | Wired LAN backbone |
| 3 | Wireless Router | WRT300N | Wi-Fi access for all IoT devices |
| 4 | Motion Sensor | IoT-PT | Detects human presence |
| 5 | Door Sensor | IoT-PT | Monitors lock / unlock status |
| 6 | Temperature Sensor | IoT-PT | Ambient temperature monitoring |
| 7 | Smart Light | IoT-PT | Dimmable lighting actuator |
| 8 | Smart Fan | IoT-PT | Variable-speed fan actuator |
| 9 | Smoke Detector | IoT-PT | Fire and smoke hazard detection |
| 10 | Security Camera | IoT-PT (Webcam) | Visual surveillance |
| 11 | Smartphone | SMARTPHONE-PT | Remote monitoring and control |
| Parameter | Value |
|---|---|
| SSID | IoT_Wireless |
| Security Mode | WPA2 Personal (PSK) |
| Encryption | AES |
| Channel | 1 — 2.412 GHz |
| Key Renewal | 3600 seconds |
All IoT devices authenticate using WPA2-PSK before obtaining a DHCP lease, ensuring only registered devices can join the network.
Six event-driven rules configured on the IoT Server enable autonomous smart home behavior:
| # | Rule | Trigger Condition | Actions |
|---|---|---|---|
| 1 | Door Open → Lights & Fan ON | Door Sensor = Unlock | Light → ON, Fan → HIGH |
| 2 | Door Close → Lights & Fan OFF | Door Sensor = Lock | Light → OFF, Fan → OFF |
| 3 | Motion Detected → Light ON | Motion Sensor = true | Light → ON |
| 4 | No Motion → Light OFF | Motion Sensor = false | Light → OFF |
| 5 | High Temperature → Fan ON | Temperature > 25.0 °C | Fan → HIGH |
| 6 | Normal Temperature → Fan LOW | Temperature < 25.0 °C | Fan → LOW |
These rules demonstrate event-driven IoT architecture — actuators respond to sensor states in real time without any manual intervention.
Network performance was evaluated using a 100-packet ICMP ping test from the PC to the Smartphone (192.168.0.115).
Measures network reliability — the fraction of sent packets successfully received.
PDR = (Packets Received / Packets Sent) × 100
= (100 / 100) × 100
= 100%
Zero packet loss observed across all 100 transmitted packets.
Measures the effective data transmission rate during the test.
Total Data = 100 packets × 32 bytes = 3,200 bytes = 25,600 bits
Duration = 4.1 seconds
Throughput = 25,600 / 4.1 ≈ 6,243.9 bps ≈ 6.24 kbps
This reflects ICMP test traffic only. The WRT300N supports up to 54 Mbps (802.11g).
Measures the one-way packet travel time from source to destination.
Average RTT = 41 ms
End-to-End Delay = RTT / 2 = 20.5 ms
| Metric | Value |
|---|---|
| Minimum RTT | 11 ms |
| Maximum RTT | 159 ms |
| Average RTT | 41 ms |
| End-to-End Delay | 20.5 ms |
Smart home applications typically require latency under 100–500 ms. At 20.5 ms, this network is well within acceptable bounds.
| Metric | Result | Benchmark | Status |
|---|---|---|---|
| Packet Delivery Ratio | 100% | > 95% | ✅ Excellent |
| Throughput | 6.24 kbps | Adequate for IoT sensor traffic | ✅ Pass |
| End-to-End Delay | 20.5 ms | < 100 ms for smart home | ✅ Excellent |
IoT-Smart-Home-Sensor-Network/
│
├── README.md
│
├── simulation/
│ └── IoT_Smart_Home_Sensor_Network_WSN_Simulation.pkt
│
└── screenshots/
├── 01_initial_topology.png
├── 02_pc_ip_config.png
├── 03_router_dhcp_setup.png
├── 04_wireless_settings.png
├── 05_wireless_security_wpa2.png
├── 06_iot_server_ip_config.png
├── 07_iot_server_gateway.png
├── 08_registration_service.png
├── 09_temp_sensor_registration.png
├── 10_all_devices_registered.png
├── 11_device_controls.png
├── 12_complete_topology.png
├── 13_automation_rules.png
├── 14_door_sensor_control.png
├── 15_smartphone_config.png
├── 16_ping_phase1.png
├── 17_ping_phase2.png
├── 18_ping_phase3.png
└── 19_ping_statistics.png
- Cisco Packet Tracer 8.2.2+ — free with a Cisco NetAcad account
1. Clone the repository
git clone https://github.com/Divyanshukumar2005/IoT-Smart-Home-Sensor-Network.git
cd IoT-Smart-Home-Sensor-Network2. Open the simulation
- Launch Cisco Packet Tracer
- File → Open →
simulation/IoT_Smart_Home_Sensor_Network_WSN_Simulation.pkt
3. Explore registered devices
- Click PC → Desktop → Web Browser →
http://192.168.0.10 - Login:
admin / admin - View all 7 registered IoT devices and configured automation rules
4. Test automation
- Click the Door Sensor → toggle Lock / Unlock → watch Smart Light and Fan respond
- Click the Temperature Sensor → set value above 25 °C → Fan activates automatically
5. Run the performance test
- Click PC → Desktop → Command Prompt
ping 192.168.0.115 -n 100
- Observe PDR, RTT statistics, and calculate throughput
- IoT Network Design — Building a complete sensor-actuator network with a central management server
- Wireless Security — Implementing WPA2-PSK with AES encryption for device authentication
- DHCP vs Static IP — Choosing appropriate addressing strategies for different device roles
- Event-Driven Automation — Designing condition-action rules for autonomous device behaviour
- Network Performance Analysis — Measuring PDR, Throughput, and End-to-End Delay from empirical test data
- Wireless Sensor Networks (WSN) — Understanding device registration, data collection, and real-time control in IoT environments
Divyanshu Kumar
B.Tech (Electronics & Communication Engineering) · University of Delhi
Built with Cisco Packet Tracer 8.2.2
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