Fundamentals

Networking fundamentals and CCNA-level reference content. The TCP/IP and OSI models, ethernet basics, encapsulation, IPv4 addressing, layer 2 fundamentals, and the Cisco IOS commands every network engineer reaches for. The foundations beneath the pillar guides.

76 posts

Fundamentals

How to Configure HTTP Method on a Cisco Switch

Enabling HTTP or HTTPS on a Cisco switch takes ip http server, secure-server, AAA, and a trustpoint. Here is the config, the security hardening, and the gotchas.

Dec 23, 2024 3 min read

Fundamentals

How to Check Your Cisco Switch Warranty

Check a Cisco switch warranty by grabbing the serial from the chassis or show inventory, then running it through the Cisco Serial Number Info Finder.

Dec 23, 2024 1 min read

Fundamentals

Top CCNA Network Simulators: Hands-On Review & Guide

Explore the top CCNA network simulators I tested, hands-on insights, pros & cons, and tips to choose the right one for your study lab.

Dec 23, 2024 3 min read

Fundamentals

Cisco Port Security Guide: Lock Down Your Network Ports

Master Cisco port security techniques to prevent unauthorized devices from joining your LAN — step-by-step commands, violation modes, and best practices included.

Dec 21, 2024 3 min read