DevEUI, AppEUI (JoinEUI) and AppKey rules?

[MartijnJonkers]

Hello,

I was looking into the rules regarding the AppEUI (JoinEUI) and the AppKey. I now stumbled upon the EUI rules. These state that an EUI consists out of OUI and a extension number. I checked the OUI of the lora gateways we have and the OUI matches with what is registered with the IEEE, as expected.

But the loRaMac-node uses the stm32 device unique id as a source for the DevEUI. From what I found, this results in an invalid EUI, is this expected? Can we use the stm32 hardware id, or do we need to get a OUI from the IEEE and commission the device with this new DevEUI?

I also saw that some join servers seem to use random numbers for the JoinEUI (like multitech LENS) and others do use the OUI assigned to them (like TTN).

What are we allowed to use? can we just use any sequence of 64 bits as a EUI? or do we need to use a local administered EUI by setting the X-bit to 1 and the M-bit to 0, as explained in this video

And from what I found, the AppKey is just a 128 bit random number?

thank you!