How to Migrate ABP Devices from V2 to V3

If not configured for device:

  • mac-settings.rx1-delay is assumed to be 1 as per the spec
  • mac-settings.desired-rx1-delay is assumed to be 5 on our networks

So given your device NS reads the MAC settings as:
Device is using RX delay of 1 by default, but RX delay of 5 is desired - send RxTimingSetupReq to make device use RX delay of 5.

If you want your device to use RX delay value of 1, please set mac-settings.desired-rx1-delay to 1