The Green Diamond

Read the full post here: wlanprofession...
The "green diamond" represents how clients join an access point
It's easy to remember. We all know the color green and we all know the shape of a diamond. But where it came from was a graphic from a slide deck I did oh, almost 20 years ago now It was a diamond because the decision of which AP to join is solely, totally, completely only in the client device itself. So we put the diamond to represent a decision on the laptop itself.
We could call it the "Unique proprietary roaming algorithm used by your client". Now it's a big, long thing to say, but that's actually what's happening when a client is going to associate to an AP it's going to go through a series of frames.
Chapters:
00:00 Start
00:19 How Wi-Fi Clients Join an Access Point
00:35 Why The Green Diamond?
00:52 Association/Roaming Algorithms
03:17 SSID
03:31 RSSI & SNR
04:03 Authentication Method
04:13 Channel Switch Announcements
05:04 MCS/Data, Minimum Basic Rate & Supported Data Rates
05:30 Heuristics
06:11 Wi-Fi Client Joining WLAN
07:31 Role of Green Diamond

[@joelourenco4621]

Thank you! The process flow starting at 6:10 is perfect.

[@cidercreekranch]

Nice presentation. Very informative.
Dating myself... the diamond symbolizes a decision point in an IBM flowchart model. Back in the day you would use a plastic template to draw, by hand, the execution flow of a module.

[@greggs1000]

Thank you for the great video Keith!

[@akshaychavan9308]

Ok this is a great video...a great topic as well

[@vichhaiyserey]

Very helpful :)

[@venutoj]

Thank you!!!!

[@techevangelist8373]

If my manager walks up to me asks, what are the metrics his PC would use out of all these attributes. Can I check that somewhere in the pc or is it opaque for end user?

[@codemaschine]

Nope, except for a few open source drivers, the green diamond often is a well kept secret.