Hello!
Have you ever try to set up fast-transition roaming between AP with Mikrotik and OpenWRT devices?
I have Mikrotik hap aax2 and Turris MOX (OpenWRT) and I want to improve switching between APs. Is it possible to set up?
Thanks in advance!

I think you can use 802.11k/v but 802.11r (FT over DS) requires all the stations to be managed by the same controller.

If you use PSK (password common for all clients using the same SSID), 802.11r does not matter. Despite common believe 802.11r only makes a difference if enterprise WPA is used (user specific password provided by a radius server or similar). There it shortens reauthentification of STAs changing the AP by avoiding a full round trip to the authentication server. This requires a central coordination by a controller to pass along tokens. For WPA2/3 PSK it has no effect.

802.11k/v instead should work among APs off different vendors. At least in theory. And if working, it will shorten roaming times by providing STAs with information about channels of alternative APs and other roaming instructions.

802.11k/v instead should work among APs off different vendors. At least in theory.

Alas in practice one should then manually set list of possible roaming targets (on the other vendor's equipment), but that in ROS is not possible (yet?).

As it is now, CAPsMAN does it via steering groups (either automatic or manually created) ... and it's possible to see collected list of BSSIDs using . To have working roaming between BSSIDs controlled by different WiFi entities (e.g. between SPs from different vendors or between MT's APs not managed by CAPsMAN) it would have to be possible to add BSSIDs manually.