My Journey in Wireless Networking: From Foundations to Expertise

My CWNE Journey – CWNE #590 | Ruckus Guy Wi-Fi · CWNP · Personal Journey From Passion to CWNE — The Journey That Changed Me What it really took to earn the highest Wi-Fi credential in the world 🏅 CWNE #590 · Certified Wireless Network Expert CWNE Journey Personal 2025 ~8 min read There are certifications you earn to check a box. And then there is the CWNE — a credential you earn because something inside you refuses to stop until you truly understand wireless networking at every layer, in every scenario, under every condition. I am CWNE #590. That number means something to me that I find difficult to put into words. It represents years of early mornings with study guides, late nights chasing packet captures, failed attempts I had to learn from, and a community of engineers who believed in raising the bar. If you are on this path or thinking about starting, I want to share what this journey actually looked like fro...

You Can't Have Good WiFi Without Good Infrastructure Field Notes on Networks & Infrastructure OPINION · 2025 Network Engineering · Travel Dispatch You Can't Have Good WiFi Without Good Bones A chance glimpse behind the reception desk at a hotel laid bare an uncomfortable truth: the problems you see at the surface are almost always symptoms of something far worse underneath. N Network Engineering Field Notes Travel dispatch · Infrastructure · 8 min read The back-of-house "network room" at the hotel — a tangle of Ethernet runs, unsecured patch cables, wall-mounted equipment on bare plywood, and no visible cable management. This is what 5 Mbps looks like from the inside. I checked into a hotel expecting a quiet place to work. What I got was a frustrating lesson in the relationship between visible p...

PPE Requirements for Network Engineers | Field Safety Guide 🦺 Field Safety — Network Engineering PPE Requirements A comprehensive safety guide for network engineers deployed on active construction sites. Compliance is not optional — it protects your life and your team. Audience Network Field Engineers Site Type Active Construction Zones Standard OSHA 29 CFR 1926 ⚠️ Zero Tolerance Policy All PPE mandatory on site Hardhat Required Z-87 Safety Glasses High-Vis Vest Cut Level 4 Gloves Safety Toed Footwear Fall Harness at 6ft+ Hearing Protection at 90dB Long Pants Always Hardhat Required Z-87 Safety Glasses High-Vis Vest Cut Level 4 Gloves Safety Toed Footwear Fall Harness at 6ft+ Hearing Protection at 90dB Long Pants Always "Network engineers...

 When investigating Fast Transition (FT) roaming issues in enterprise wireless networks, packet captures often hold the key to diagnosis. Let's analyze this specific roaming failure case where a client fails to roam from one access point to another. Problem Statement: Random Devices are facing FT roaming issue and requires reauthentication.  While the problem statement sounds easy, capturing roaming failures could be challenging when the problem is random/intermittent. It is also important to know where to capture; Remember CWAP Guidelines? For roaming we need to capture near multiple AP's.  In this case we used RUCKUS AP Remote PCAP feature to stream captures from multiple AP's to the Wireshark and Voila! We were lucky to capture the failure  use case.  Now lets see what does it look like: The packet captures shows us an "Invalid FTE (0x0037)" error. FTE stands for Fast Transition Element, a critical component of the 802.11r protocol that facilitates seaml...

 Let's understand first, what is Management Frame Protection? Based on the IEEE 802.11w amendment, Protected Management Frames (PMF), also known as Management Frame Protection (MFP), is a security feature that provides integrity protection for both unicast and broadcast management frames, while also encrypting unicast management frames in the same way as data to provide confidentiality. Without the Protected Management Frames feature, all management frames are sent unprotected in the open. Transmitting open frames makes connections vulnerable to attack. To leverage Protected Management Frames, both the AP and the STA need to be capable of using it, and it must be activated for each encrypted Wi-Fi network of the AP. If those conditions are met, Protected Management Frames are automatically invoked during client association. Understanding Management Frame Protection Failures MFP is one of the common challenge when working with legacy devices in modern wireless networks. My recent t...

Last week, I had the opportunity to attend the WiFi Now Congress, where I was introduced to an amazing  technology by "American Bandwidth"  that promises to revolutionize how we experience wireless connectivity: Wi-Fi DAS. This innovative approach to Wi-Fi deployment caught my attention, and I'm excited to share what I learned with you at the  WiFi Now Congress 2025, at the heart of the Silicon Valley.  What is Wi-Fi DAS? Wi-Fi DAS (Distributed Antenna System) technology addresses the growing need for seamless, secure connectivity across indoor and outdoor environments. Specifically the areas that struggle with the Cellular coverage, Wi-Fi DAS offers a comprehensive solution that integrates with existing WiFi infrastructure and significantly enhances the performance. Key Benefits of Wi-Fi DAS Based on the presentations at the WiFi Now Congress, here are the standout advantages of Wi-Fi DAS: 1. Seamless Authentication One of the most impressive aspects of Wi-Fi DAS is...

We have heard about roaming several times, and understand how seamless roaming experience is important for users with time sensitive applications. This seamless experience is made possible by a process called "roaming" in 802.11 wireless networks.  What is 802.11 Roaming and how does it work? The 802.11 roaming refers to the process where a wireless station moves from one access point (AP) to another within the same extended service set (ESS). This transition should ideally happen without any interruption to the network connectivity. When the station first connect to a Wi-Fi network, it associates with an access point. As you move away from this initial access point, the signal strength degrades. When this happens, your device starts scanning for a better connection, looking for another access point to associate with. A very important fact, which is often forgotten by the Users/Network administrators is, the decision to roam is made entirely by your device, not the Access Poi...