Cisco ASA Routed Mode vs Transparent Mode
Cisco ASA can run in two firewall modes: routed mode, where the firewall is a Layer 3 hop with its
9 min read
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
Catalyst Center CLI Templates for Network Teams That Hate Fragile Automation
Catalyst Center CLI templates sit between full manual work and heavy automation frameworks. Here is how to use them for repeatable, non-fragile network changes across campus and enterprise sites without building a platform you regret in six months.
14 min read
Post-Quantum Crypto in Cisco Campus Networks: What Operators Need to Know
NIST finalized three post-quantum cryptography standards and Cisco is marketing quantum-ready Catalyst 9000s. Here is what PQC actually means for campus networks, where your real exposure is, and what to prioritize now versus watch.
12 min read
Catalyst Center and ThousandEyes: What Problem Does This Actually Solve?
Catalyst Center shows your infrastructure is healthy while the user still cannot load Salesforce. ThousandEyes closes that gap. Here is what the integration actually solves, how it works, and where it fits in a Cisco shop.
15 min read
Is Cisco SD-Access Worth It in 2026? A Brownfield Reality Check
After years of real-world SD-Access deployments, the honest answer is: it depends. A practical, checklist-driven reality check on whether Cisco SD-Access is worth the effort in brownfield campus networks in 2026.
12 min read
How to Configure Hostname on Cisco Router (Step-by-Step Guide)
Learn how to configure a hostname on your Cisco router using simple CLI commands. This guide explains why hostnames matter, how to save changes, and best practices for network organization.
4 min read