Building a Network from Scratch - Epsiode 1: The Physical Layer/Infrastructure

Building a Network from Scratch | Cisco Packet Tracer — Episode 1: The Physical Layer Welcome to Episode 1 of this hands-on networking series, where we will build and progressively evolve a network from a small LAN into a fully connected enterprise WAN using Cisco Packet Tracer. In this first episode, we start at the foundation of networking: OSI Layer 1 — the Physical Layer. Before configuring VLANs, IP addressing, routing protocols, security, wireless networking and WAN technologies, we first need to establish the physical infrastructure that allows our network devices to communicate. In this episode, we: • Build the initial network topology in Cisco Packet Tracer • Connect routers, switches, wireless access points and end devices • Establish physical connections between network devices • Select appropriate interfaces and connection types • Understand the role of each device within the network • Explore the importance of the Physical Layer • Prepare the network for Layer 2 configuration in the next episode This is only the beginning. As the series progresses, we will continue expanding the same network by introducing: 🔹 Ethernet & Layer 2 Switching 🔹 VLANs & Trunking 🔹 IP Addressing & Subnetting 🔹 Inter-VLAN Routing 🔹 Static & Dynamic Routing 🔹 OSPF 🔹 Network Redundancy 🔹 Network Security 🔹 Wireless Networking 🔹 Branch Office Connectivity 🔹 WAN Technologies 🔹 Enterprise Network Design The goal is to build one network progressively and understand why each technology is introduced as the network grows, rather than simply configuring isolated Packet Tracer labs. Whether you're learning networking, preparing for CCNA/CCNP, or developing practical Cisco networking skills, follow along as we take this network from a simple topology to an enterprise-scale WAN. 📌 Lab Platform: Cisco Packet Tracer 📚 Topic: OSI Model — Layer 1 (Physical Layer) 🌐 Project: Building a Network from Scratch — LAN to WAN Next Episode: Layer 2 — Ethernet, Switching and VLANs If you find the series useful, consider liking, subscribing and following the playlist as we build the network step by step. #CiscoPacketTracer #Networking #NetworkEngineering #OSIModel #PhysicalLayer #Cisco #CCNA #CCNP #NetworkingLab #LAN #WAN #NetworkEngineer