Blog
Field notes on complex Wi-Fi.
PoE for Wi-Fi Explained
PoE is one of those topics everyone assumes is solved. You plug the access point in, it powers up, the survey looks fine, and the project moves on. Then someone measures two spatial streams on a 4x4 access point, or notices that the 6 GHz radio never came up, and the investigation ends at the switch.
François Vergès, CWNE #1806 min read
12 posts
Most recent first
Why 6 GHz Wi-Fi is Already Improving High Density Networks
Walk into a university lecture hall just before class begins, and the scene is always the same. Students stream in, open laptops, pull out tablets, and connect their phones all at once. Within minutes, the air is thick with competing signals. For the IT staff responsible for keeping everyone connected, it is less about managing people and more about managing airtime.
François Vergès, CWNE #1805 min read
Wi‑Fi Was a Branding Move Not Just a Technical Term
If you’ve ever wondered where the name Wi‑Fi came from, you are not alone.
François Vergès, CWNE #1803 min read
WWC Toronto 2023 – Summary
The World Wi-Fi Congress organized by Wi-Fi Now and held in Toronto showcased the latest developments in the Wi-Fi industry, highlighting the revolutionary potential of Wi-Fi 7, efforts to improve latency and optimize traffic scheduling, the integration of location services for precise navigation and asset tracking, the shift towards providing additional services leveraging 6 GHz capabilities, and the innovative use of Wi-Fi signals for motion sensing, all pointing towards a promising future of continuous advancements and enhanced services in the Wi-Fi industry.Read about the popular topics that were discussed during the conference.
François Vergès, CWNE #1803 min read
Calculate 802.11 Retry Rate with Wireshark
There are many broadcast and unicast messages between a user and an access point that the user has no idea about! So what if some of them fail while you are streaming or having an internet-based call? A low-quality call? Lags and buffering? Slow uploads and downloads?Probably all of them! Why? Because for every failure in communications, there will be a retry, and once these retries increase, they will affect your service indirectly.
Amin SedighFar, CWNE #6224 min read
IEEE 802.11 Timeline – Update 2021
Same changes have been happening around the 802.11 standards lately, so the initial 802.11 timeline we had previously created was up for an update.Here is what has changed since the last update:
François Vergès, CWNE #1801 min read
Wi-Fi Security Timeline (2019)
A few years ago, I created a first Wi-Fi Security Timeline. With the new security improvements introduced last year, I thought it would be a good idea to update it.
François Vergès, CWNE #1801 min read
IEEE 802.11 Standards & Amendments Timeline
Visiting the IEEE website, we can find the details about the IEEE 802.11 standards and amendments displayed on a table: http://grouper.ieee.org/groups/802/11/Reports/802.11_Timelines.htm
François Vergès, CWNE #1801 min read
Wireshark: How to check if a Wi-Fi network supports 802.11k
Today’s exercice is simple: study the beacon frame and try to figure out what characteristics of the Wi-Fi network are advertised.
François Vergès, CWNE #1803 min read
How to check if a client device supports 802.11v
This post is directly related to the following previous article: "Wireshark: How to check it a Wi-Fi Network Supports 802.11v".
François Vergès, CWNE #1804 min read
Wireshark: How to check if a Wi-Fi network supports 802.11v
Today's exercice is simple: study the beacon frame and try to figure out what characteristics of the Wi-Fi network are advertised.
François Vergès, CWNE #1802 min read
Wireshark: How to check if a data frame is sent using 802.11n
Studying for the CWAP exam, I was using Wireshark and wondering how to see if the traffic (data frames) I was capturing was using HT (or 802.11n). So this article will show you how to find out!
François Vergès, CWNE #1802 min read
Wi-Fi Security Timeline
Here is a timeline concerning important standards and protocols related to Wi-Fi security. (Click for full size image)
François Vergès, CWNE #1801 min read