cisco-packet-tracer-physical-layer

📌 Project Overview

This project focuses on exploring and configuring the Physical Layer of network devices using Cisco Packet Tracer. The objective was to identify the physical characteristics of internetworking devices, select appropriate hardware modules for expansion, establish correct physical cabling between various devices, and verify end-to-end connectivity.

🌐 Network Topology

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🎯 Objectives Completed

Part 1: Identify Physical Characteristics of Internetworking Devices

• Examined the physical management ports of the Cisco East router.
• Identified and verified the physical LAN and WAN interfaces via the Command Line Interface (CLI) using the show ip interface brief command.
• Analyzed default interface bandwidth parameters using show interface gigabitethernet 0/0 and show interface serial 0/0/0.
• Determined the available expansion slots on both the East router and Switch2 to understand hardware scalability.

Part 2: Select Correct Modules for Connectivity

• Explored various expansion modules to provide the necessary hardware interfaces without the need for purchasing new standalone switches.
• Properly performed a safe hardware upgrade by powering down the East router, installing the required multi-port switch module, and powering it back up.
• Installed a Gigabit optical fiber module into Switch2 to provide a high-speed backbone link to Switch3.

🛠️ Hardware Upgrade (Physical View)

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Part 3: Connect Devices (Cabling)

Successfully established physical media connections across the entire topology using the precise cable types required for internetworking standards:

• Copper Straight-Through: Used to connect heterogeneous devices (e.g., Routers to Switches, Switches to PCs, and Access Points).
• Copper Cross-Over: Used to connect homogeneous devices (e.g., Switch4 to Switch3).
• Fiber: Installed to support high-speed optical data transmission between Switch3 and Switch2.
• Serial DCE: Configured for the wide-area network (WAN) link between the East and West routers.

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Part 4: Check Connectivity & Verification

• Verified that all physical interfaces were active and operational (up / up) through CLI configuration checks.
• Successfully tested end-to-end wireless connectivity by enabling the Wireless0 interface on the Laptop and TabletPC.
• Confirmed functional web access by browsing to www.cisco.srv via the built-in web browser on end devices.
• Demonstrated network adaptation by transitioning the TabletPC from a local wireless connection to a 3G/4G Cellular interface.

💻 CLI Verification (show ip interface brief)

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📊 Project Completion Status

• Completion Score: 100%

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🎥 Video Demonstration

https://github.com/Nuha56/cisco-packet-tracer-physical-layer/blob/main/Lab-demo.mp4