Hello RAK Support
We have been using RAK4270 (New production is RAK3172) modules in our sensors successfully for some time with our own LNS. The RAK4270 uses standard RAKWireless Firmware (3.3.0.18) with a slave processor sending standard AT commands.
Note: The LNS is used with 1000’s of Elsys sensors without any problem so we think the Gateway and Packet Forwarder is good
We have a remote site with 100+ LoRa Sensors using the RAK4270 that were all joined successfully when installed over 6 months ago.
On this site approx 20 LoRa Sensors have now dropped off and we are receiving the following logs from our LNS Server and the packet forwarders in the building
Note: We have been informed that there are no other LoRa devices in the building.
Notice that the devEUI is empty (devEUI:) or only 4 characters (devEUI:2BDD) in some logs and the log with a join request from devEUI:A07D9E10FCB3E324 shows a devEUI that will never be received again on the LNS.
The devEUIs are stored in the RAK4270 as normal
I believe these logs are being received from the RAK4270 sensors that have dropped off and perhaps are trying to join again but something is corrupt in the join request ??
Looking for suggestions on how we can debug this situation
Thank You
Paul Humphreys
8/07/2023, 11:23:11:
Jul 28 11:23:11 ECO-LWBAC-01A node[926]: Join Request, 0
Jul 28 11:23:11 ECO-LWBAC-01A node[926]: 28/07/2023, 11:23:11:
Jul 28 11:23:11 ECO-LWBAC-01A node[926]: ==> Join Request from unknown device with devEUI:, via GW: 3636303730003200 @ SF9BW125, Freq.: 868.1
Jul 28 11:23:18 ECO-LWBAC-01A node[926]: 28/07/2023, 11:23:18:
Jul 28 11:23:18 ECO-LWBAC-01A node[926]: Join Request, 0
Jul 28 11:23:18 ECO-LWBAC-01A node[926]: 28/07/2023, 11:23:18:
Jul 28 11:23:18 ECO-LWBAC-01A node[926]: ==> Join Request from unknown device with devEUI:2BDD, via GW: 3636303730003200 @ SF9BW125, Freq.: 868.1
Jul 28 11:24:19 ECO-LWBAC-01A node[926]: 28/07/2023, 11:24:19:
Jul 28 11:24:19 ECO-LWBAC-01A node[926]: Join Request, 0
Jul 28 11:24:19 ECO-LWBAC-01A node[926]: 28/07/2023, 11:24:19:
Jul 28 11:24:19 ECO-LWBAC-01A node[926]: ==> Join Request from unknown device with devEUI:, via GW: 3636303730003200 @ SF9BW125, Freq.: 868.1
Jul 28 11:53:01 ECO-LWBAC-02 node[811]: Join Request, 0
Jul 28 11:53:01 ECO-LWBAC-02 node[811]: 28/07/2023, 11:53:01:
Jul 28 11:53:01 ECO-LWBAC-02 node[811]: ==> Join Request from unknown device with devEUI:A07D9E10FCB3E324, via GW: 3636303730003200 @ SF12BW125, Freq.: 868.5
Jul 28 11:26:17 ECO-LWBAC-01A node[926]: Unconfirmed Data Up, 2
Jul 28 11:26:17 ECO-LWBAC-01A node[926]: 28/07/2023, 11:26:17: Sensor with DevAddress: 005FFBB9 is not found in database
Jul 28 11:26:27 ECO-LWBAC-01A node[926]: 28/07/2023, 11:26:27:
Jul 28 11:26:27 ECO-LWBAC-01A node[926]: Unconfirmed Data Up, 2
Jul 28 11:26:27 ECO-LWBAC-01A node[926]: 28/07/2023, 11:26:27: Sensor with DevAddress: 01C7F398 is not found in database