Understanding BGP: The Protocol That Runs the Internet
BGP is the glue that holds the internet together — learn how it works, how to configure it on Cisco, and the security challenges it faces.
Author: Sarah Chen
Sarah brings the analytical edge to IGNA Online. With deep experience in Cisco networking and a sharp eye on crypto markets, she writes detailed breakdowns of BGP, VLANs, IOS variants, blockchain technology, and edge computing platforms like NVIDIA Jetson.
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NVIDIA Jetson vs Raspberry Pi 5: Which Board for Your AI Project?
Jetson Orin Nano vs Raspberry Pi 5 — specs, AI performance benchmarks, power draw, and which board is right for your next project.
Cisco IOS vs IOS-XE vs IOS-XR: What’s the Difference?
A deep dive into Cisco’s three operating systems — IOS, IOS-XE, and IOS-XR — their architectures, platforms, CLI differences, and when you’ll encounter each.
Ethereum Layer 2 Explained: Arbitrum, Optimism, and Base
A clear breakdown of Ethereum Layer 2 solutions — how rollups work, and a deep dive into Arbitrum, Optimism, and Base.
Understanding VLANs: A Practical Guide to Network Segmentation
A hands-on guide to VLANs — what they are, why segmentation matters, and how to configure them on a managed switch with Cisco CLI examples.
End of Year Tech Review: 2025’s Biggest AI, NVIDIA, EV & IoT Moments
From AI’s reality check and NVIDIA’s $5 trillion dominance to EV market turbulence and smart homes going predictive—here’s everything that mattered in tech this year.
Bitcoin After the Halving: How Crypto Markets Shifted in 2025
An analytical look at how Bitcoin and the broader crypto market evolved after the April 2024 halving — ETF impact, altcoin trends, and what to watch next.
Cisco Catalyst vs Meraki: Choosing the Right Network Gear for Your Homelab
A detailed comparison of Cisco Catalyst and Meraki for homelab use — covering cost, management, features, and which one actually makes sense for your setup.
Recovering Lost Cisco ASR9000 Router Passwords: A Practical Guide
Hey everyone! Back again with another tech deep dive, this time tackling a common, yet potentially frustrating, problem: recovering a lost password for your Cisco ASR9000 router. This isn’t a task to take lightly; security is paramount. But sometimes, things happen. Let’s explore how to handle this situation responsibly and effectively. Disclaimer: Accessing network […]
Coinbase’s S&P 500 Inclusion: A Crypto Milestone and What It Means for Bitcoin, Ethereum, and Hedera
Coinbase’s S&P 500 Inclusion: A Crypto Milestone and What It Means for Bitcoin, Ethereum, and Hedera Hey adventurers! Today, we’re venturing into the exciting world of cryptocurrency and the recent landmark event: Coinbase’s addition to the S&P 500 index. This isn’t just another tech stock making the list; it’s a significant acknowledgment of the growing […]