We've a nRF9151 DK for which we built the Nordic Semiconductor LwM2M Client sample using SDK 3.0.2 (modem firmware 2.0.2).
We followed all steps listed in https://docs.nordicsemi.com/bundle/ncs-3.0.2/page/nrf/samples/cellular/lwm2m_client/sample_description.html for connecting the LwM2M to the public Leshan server.
Unfortunately we're not connecting to Leshan.
The client has been correctly registered using urn:imei:<imeinumber> and the key (DTLS).
On the console we get:
*** Booting nRF Connect SDK v3.0.2-89ba1294ac9b *** *** Using Zephyr OS v4.0.99-f791c49f492c *** [00:00:00.255,584] <inf> app_lwm2m_client: Run LWM2M client [00:00:00.592,193] <inf> app_lwm2m_client: endpoint: urn:imei:359404230143209 [00:00:01.021,484] <inf> lwm2m_lte_notification: Registering ncell notification handler [00:00:01.021,545] <inf> lwm2m_firmware: Image is confirmed OK [00:00:01.021,575] <inf> app_lwm2m_client: Unlock SIM [00:00:05.671,478] <inf> app_lwm2m_client: Connecting to network. [00:00:05.671,508] <inf> app_lwm2m_client: This may take several minutes. [00:00:06.937,561] <dbg> app_lwm2m_client: lwm2m_lte_reg_handler_notify: LTE NW status: 2 [00:00:07.989,898] <dbg> app_lwm2m_client: lwm2m_lte_reg_handler_notify: LTE NW status: 1 [00:00:07.990,600] <inf> app_lwm2m_client: Connected to LTE network [00:00:07.990,600] <inf> app_lwm2m_client: Client connect to server [00:00:07.990,783] <inf> net_lwm2m_rd_client: Start LWM2M Client: urn:imei:359404230143209 [00:00:07.991,088] <inf> net_lwm2m_rd_client: RD Client started with endpoint 'urn:imei:359404230143209' with client lifetime 43200 using server object 0 [00:00:07.991,271] <inf> app_lwm2m_client: LwM2M is connecting to server [00:00:08.188,507] <inf> lwm2m_security: Need to write credentials, requesting LTE and GNSS offline... [00:00:08.233,764] <dbg> app_lwm2m_client: lwm2m_lte_reg_handler_notify: LTE NW status: 0 [00:00:08.233,917] <inf> app_lwm2m_client: LwM2M is connecting to server [00:00:09.497,955] <inf> lwm2m_security: Requesting LTE and GNSS online [00:10:09.537,567] <inf> lte_lc: Network connection attempt timed out [00:10:09.539,855] <err> lwm2m_security: lte_lc_connect() failed -116 [00:10:09.539,855] <inf> lwm2m_security: Modem connection restored [00:10:09.539,886] <err> net_lwm2m_rd_client: Cannot init LWM2M engine (-116) [00:10:09.540,069] <err> net_lwm2m_rd_client: sm_do_network_error, retries 0 [00:10:09.540,191] <inf> net_lwm2m_rd_client: RD Client started with endpoint 'urn:imei:359404230143209' with client lifetime 43200 using server object 0 [00:10:09.546,966] <err> net_lwm2m_message_handling: Unable to resolve address [00:10:09.546,997] <err> net_lwm2m_rd_client: Cannot init LWM2M engine (-2) [00:10:09.547,180] <err> net_lwm2m_rd_client: sm_do_network_error, retries 1 [00:10:10.547,454] <err> net_lwm2m_rd_client: sm_do_network_error, retries 1 [00:10:10.547,637] <inf> net_lwm2m_rd_client: RD Client started with endpoint 'urn:imei:359404230143209' with client lifetime 43200 using server object 0 [00:10:10.556,640] <err> net_lwm2m_message_handling: Unable to resolve address [00:10:10.556,671] <err> net_lwm2m_rd_client: Cannot init LWM2M engine (-2) [00:10:10.556,884] <err> net_lwm2m_rd_client: sm_do_network_error, retries 2 [00:10:12.557,159] <err> net_lwm2m_rd_client: sm_do_network_error, retries 2 [00:10:12.557,312] <inf> net_lwm2m_rd_client: RD Client started with endpoint 'urn:imei:359404230143209' with client lifetime 43200 using server object 0 [00:10:12.566,345] <err> net_lwm2m_message_handling: Unable to resolve address [00:10:12.566,375] <err> net_lwm2m_rd_client: Cannot init LWM2M engine (-2) [00:10:12.566,558] <err> net_lwm2m_rd_client: sm_do_network_error, retries 3 [00:10:16.566,833] <err> net_lwm2m_rd_client: sm_do_network_error, retries 3 [00:10:16.566,986] <inf> net_lwm2m_rd_client: RD Client started with endpoint 'urn:imei:359404230143209' with client lifetime 43200 using server object 0 [00:10:16.575,988] <err> net_lwm2m_message_handling: Unable to resolve address [00:10:16.576,019] <err> net_lwm2m_rd_client: Cannot init LWM2M engine (-2) [00:10:16.576,202] <err> net_lwm2m_rd_client: sm_do_network_error, retries 4 [00:10:24.576,477] <err> net_lwm2m_rd_client: sm_do_network_error, retries 4 [00:10:24.576,629] <inf> net_lwm2m_rd_client: RD Client started with endpoint 'urn:imei:359404230143209' with client lifetime 43200 using server object 0 [00:10:24.585,632] <err> net_lwm2m_message_handling: Unable to resolve address [00:10:24.585,662] <err> net_lwm2m_rd_client: Cannot init LWM2M engine (-2) [00:10:24.585,845] <err> net_lwm2m_rd_client: sm_do_network_error, retries 5 [00:10:40.586,120] <err> net_lwm2m_rd_client: sm_do_network_error, retries 5 [00:10:40.586,151] <err> net_lwm2m_rd_client: Network error, max retries reached (6) [00:10:40.586,181] <err> net_lwm2m_obj_server: No server candidate found [00:10:40.586,212] <err> app_lwm2m_client: LwM2M engine reported a network error. [00:10:40.586,456] <dbg> app_lwm2m_client: rd_client_event: Disconnected [00:10:40.586,547] <inf> net_lwm2m_rd_client: Stop LWM2M Client: urn:imei:359404230143209 [00:10:40.586,547] <inf> app_lwm2m_client: LwM2M restart requested. The sample will try to re-establish network connection. [00:10:40.595,794] <inf> app_lwm2m_client: Unlock SIM [00:10:45.189,910] <inf> app_lwm2m_client: Connecting to network. [00:10:45.189,941] <inf> app_lwm2m_client: This may take several minutes. [00:10:45.454,132] <dbg> app_lwm2m_client: lwm2m_lte_reg_handler_notify: LTE NW status: 1 [00:10:45.455,444] <inf> app_lwm2m_client: Connected to LTE network [00:10:45.455,474] <inf> app_lwm2m_client: Client connect to server [00:10:45.455,627] <inf> net_lwm2m_rd_client: Start LWM2M Client: urn:imei:359404230143209 [00:10:45.456,390] <inf> net_lwm2m_rd_client: RD Client started with endpoint 'urn:imei:359404230143209' with client lifetime 43200 using server object 0 [00:10:45.456,634] <inf> app_lwm2m_client: LwM2M is connecting to server [00:10:45.938,781] <inf> net_lwm2m_engine: Connected, sock id 1 [00:10:46.016,113] <err> net_lwm2m_rd_client: Failed with code 4.3 (Forbidden). [00:10:46.017,547] <wrn> app_lwm2m_client: Registration failure! [00:10:46.017,791] <err> net_lwm2m_rd_client: sm_do_network_error, retries 0 [00:11:18.018,066] <err> net_lwm2m_rd_client: sm_do_network_error, retries 0 [00:11:18.018,157] <err> net_lwm2m_obj_server: No server candidate found [00:11:18.018,157] <err> net_lwm2m_rd_client: Unable to find a valid server instance. [00:11:18.018,280] <err> net_lwm2m_rd_client: sm_do_network_error, retries 1 [00:11:19.018,524] <err> net_lwm2m_rd_client: sm_do_network_error, retries 1 [00:11:19.018,646] <err> net_lwm2m_obj_server: No server candidate found [00:11:19.018,646] <err> net_lwm2m_rd_client: Unable to find a valid server instance. [00:11:19.018,798] <err> net_lwm2m_rd_client: sm_do_network_error, retries 2 [00:11:21.019,073] <err> net_lwm2m_rd_client: sm_do_network_error, retries 2 [00:11:21.019,165] <err> net_lwm2m_obj_server: No server candidate found [00:11:21.019,165] <err> net_lwm2m_rd_client: Unable to find a valid server instance. [00:11:21.019,287] <err> net_lwm2m_rd_client: sm_do_network_error, retries 3 [00:11:25.019,561] <err> net_lwm2m_rd_client: sm_do_network_error, retries 3 [00:11:25.019,653] <err> net_lwm2m_obj_server: No server candidate found [00:11:25.019,653] <err> net_lwm2m_rd_client: Unable to find a valid server instance. [00:11:25.019,775] <err> net_lwm2m_rd_client: sm_do_network_error, retries 4 [00:11:33.020,050] <err> net_lwm2m_rd_client: sm_do_network_error, retries 4 [00:11:33.020,141] <err> net_lwm2m_obj_server: No server candidate found [00:11:33.020,141] <err> net_lwm2m_rd_client: Unable to find a valid server instance. [00:11:33.020,263] <err> net_lwm2m_rd_client: sm_do_network_error, retries 5 [00:11:49.020,538] <err> net_lwm2m_rd_client: sm_do_network_error, retries 5 [00:11:49.020,568] <err> net_lwm2m_rd_client: Network error, max retries reached (6) [00:11:49.020,599] <err> net_lwm2m_obj_server: No server candidate found [00:11:49.020,629] <err> app_lwm2m_client: LwM2M engine reported a network error. [00:11:49.020,874] <dbg> app_lwm2m_client: rd_client_event: Disconnected [00:11:49.020,965] <inf> net_lwm2m_rd_client: Stop LWM2M Client: urn:imei:359404230143209 [00:11:49.020,965] <inf> app_lwm2m_client: LwM2M restart requested. The sample will try to re-establish network connection. [00:11:49.359,283] <dbg> app_lwm2m_client: lwm2m_lte_reg_handler_notify: LTE NW status: 0 [00:11:49.479,003] <inf> app_lwm2m_client: Unlock SIM [00:11:54.096,435] <inf> app_lwm2m_client: Connecting to network. [00:11:54.096,466] <inf> app_lwm2m_client: This may take several minutes. [00:11:54.336,608] <dbg> app_lwm2m_client: lwm2m_lte_reg_handler_notify: LTE NW status: 1 [00:11:54.337,921] <inf> app_lwm2m_client: Connected to LTE network [00:11:54.337,951] <inf> app_lwm2m_client: Client connect to server [00:11:54.338,134] <inf> net_lwm2m_rd_client: Start LWM2M Client: urn:imei:359404230143209 [00:11:54.338,806] <inf> net_lwm2m_rd_client: RD Client started with endpoint 'urn:imei:359404230143209' with client lifetime 43200 using server object 0 [00:11:54.339,050] <inf> app_lwm2m_client: LwM2M is connecting to server [00:11:55.470,581] <inf> net_lwm2m_engine: Connected, sock id 1 [00:11:55.566,619] <err> net_lwm2m_rd_client: Failed with code 4.3 (Forbidden). [00:11:55.568,267] <wrn> app_lwm2m_client: Registration failure! [00:11:55.568,450] <err> net_lwm2m_rd_client: sm_do_network_error, retries 0
The console output confirms we are connected to the LTE network but we never appear in Leshan.
Any suggestion ?
Some times ago we were able without any effort to successfully connect an nRF9161 DK to the Leshan public server. With nRF9151 DK instead this doesn't seems to work.
Thanks for the support.
