I started my wifi-career in 2016 with Cisco WiFi-Fundamental as self-study. While reading about Radio Resource Management (RRM), Transit Power Control (TPC) and design principles I wondered how the network and the controller (WLC) was able to set the transmit power (Tx) on each AP according to design requirement. Since then I have read through CWNP-programme, Cisco RRM white paper and some  Cisco Design Guides and recommendations. Two ECSE–courses has also been completed. One instructor recommended static design and the other recommended tuning of TPC/RRM parameters

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My last blog was about some flavours of fast secure roaming (FSR). Based on feedback from the community, especially from Nicolas Darchis (thanks), I´ve learned that its possible to enable fast secure roaming with both AKM-suite 1 (WPA) and AKM-suite 3 (FT over IEEE802.1X) on the same wlan (also possible with PSK). Cisco calls it Hybrid Mode

We can configure our Cisco WLC like this; enable Fast Transition and both 802.1X and FT 802.1X AKM-suite. The controller will warn you that some non-802.11r clients may not join this WLAN

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A week ago I passed the CWSP-test. My knowledge is mostly from reading study guides, configuration guides, blogs and go through some online practice test. But I admit that the best way to remember the theory is to see whats actually happens with a packet capture. My last blog was on how to do packet capture and using display-filter in Wireshark.

Now its time to have a look a Fast Secure Roaming (FSR) in a network with 802.1X/EAP-authentication
When I was writing this blog I leared a LOT, so some chapters has been rewritten more than once.
Its very briefly, mostly like a “note to self” (wifi-joke). And OK to share
The goal is to see what happens during roaming, not how fast each roaming method are.

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How to capture frames in Wireshark on a network with WPA2 Enterprise and AP in FlexConnect using MacBook

My lab network looks like this

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I need som tips from the wireless community with a challenge I have

Background
I was preparing a blogarticle about transmit power mismatch impact on datarates when I discovered that my Windows client was transmitting  dataframes towards the AP with 2 spatial stream (mcs 8-15), while the AP only transmit with 1 spatial stream (mcs 0-7) toward my client.
No matter how near those stations was each other the same transmit-pattern happened

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