This video demonstrates troubleshooting techniques for Layer 1 and Layer 3 network issues using Packet Tracer. The instructor explains the theoretical background of web communication (client-server interaction, TCP segmentation, IP addressing) and then systematically guides viewers through troubleshooting steps, using practical examples within Packet Tracer. The video highlights the importance of checking physical connections (Layer 1) and IP addressing/configurations (Layer 3) to resolve network connectivity problems.
ipconfig to obtain IP address, subnet mask, and default gateway information. Employ the ping command to test connectivity between devices. Ensure devices on the same logical network have matching subnet masks. A properly configured default gateway is essential for communication outside the local network.ipconfig and ping to diagnose problems. Verify IP addresses, subnet masks, and default gateways. Check for mismatched configurations.