Problem:Issue with LTE instability constantly getting disconnected or unable to pass traffic intermittently.
Diagnostics:error messages and logs
•--------------------------------------
Address Product Vendor ProdID Serial Type Profile State Bus
------- ------- ------ ------ ------ ---- ------- ----- —
2 Cruzer Blade 0781 5567 4C531001530819118292 Storage 1
2 EM12-G 2c7c 0512 0123456789ABCDE Storage QUECTEL_EM12 Error: Cellular chat error. #0 2
(Aruba9004lte_p4-2) (support)#
•18:02:2020 00:35:04: buildUsbDeviceList: vid = 12d1 and product id = 1506
18:02:2020 00:35:04: build Usb DeviceList Profile present for USB so using values dev_mode 1, preference 3
18:02:2020 00:35:04: USB device 3 HUAWEI_MOBILE 12d1/1506: 101 inserted
18:02:2020 00:35:04: buildUsbDeviceList: vid = 2c7c and product id = 512
18:02:2020 00:35:04: build Usb DeviceList Profile present for USB so using values dev_mode 1, preference 3
18:02:2020 00:35:04: USB device 2 EM12-G 2c7c/512:0123456789ABCDEF 101 inserted
18:02:2020 00:35:04: manage_module entry 2c7c 512
18:02:2020 00:35:04: Modules loaded at bootup
18:02:2020 00:35:04: Connecting usb/2 Tue Feb 18 00:35:04 2020
18:02:2020 00:35:04: quectel_em12 EM12 network mode 1
18:02:2020 00:35:08: get_em12_mode: Quectel get mode trials -0
18:02:2020 00:35:08: get_em12_mode: Quectel get mode trials -0 - Success
18:02:2020 00:35:10: em12_sim_switch : Trying to switch to SIM: 1
18:02:2020 00:35:13: em12_sim_switch :Switched to SIM slot: 1
18:02:2020 00:35:22: sim_isp[0]: Not Detected
18:02:2020 00:35:22: em12_sim_switch : Trying to switch to SIM: 2
18:02:2020 00:35:25: em12_sim_switch :Switched to SIM slot: 2
•18:02:2020 00:37:08: USB device 3 HUAWEI_MOBILE 12d1/1506: 101 inserted
18:02:2020 00:37:08: manage_module entry 12d1 1506
18:02:2020 00:37:10: Module loaded successfully for HUAWEI E3276 1
18:02:2020 00:37:10: Module loaded successfully for usb modem 1
18:02:2020 00:37:10: Connecting usb/3 Tue Feb 18 00:37:10 2020
18:02:2020 00:37:15: Huawei: failed chat command
18:02:2020 00:37:15: Huawei: failed to get E3372 mode ...
18:02:2020 00:37:15: Huawei: mode failed ..
Console Modem logs
[12-10_16:23:16:752] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[12-10_16:23:21:840] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[12-10_16:23:26:928] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[12-10_16:23:32:016] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[12-10_16:23:37:104] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[12-10_16:23:42:192] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[12-10_16:23:47:280] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[12-10_16:23:52:368] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[12-10_16:23:57:456] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[12-10_16:23:57:456] requestSetOperatingMode(1)
[12-10_16:23:57:520] requestSetOperatingMode(0)
[12-10_16:^C[126.045]recv: 3M 1008K 546B in 5007 msec
29:11:2021 13:45:48: get_Internal-LTE-mode: Internal-LTE get mode trials -0 - Success
•29:11:2021 13:45:49: driver logs started for Internal-LTE...
•29:11:2021 13:45:51: Internal-LTE_sim_switch : Trying to switch to SIM: 1, Trial: 5
•29:11:2021 13:45:53: Internal-LTE_sim_switch :Switched to SIM slot: 1
•29:11:2021 13:45:55: Internal-LTE_preset_apn_check: Finding operator(5)
•29:11:2021 13:45:57: Internal-LTE_preset_apn_check: Finding operator(4)
•29:11:2021 13:46:00: Internal-LTE_preset_apn_check: Finding operator(3)
•29:11:2021 13:46:02: Internal-LTE_preset_apn_check: Finding operator(2)
•29:11:2021 13:46:04: Internal-LTE_preset_apn_check: Finding operator(1)
•29:11:2021 13:46:04: APN Auto populate config:
•29:11:2021 13:46:04: Internal-LTE: APN configuration successful
•29:11:2021 13:46:07: Valid status LTE for SIM:1...
•29:11:2021 13:46:07: Internal-LTE SIM 1 not connecting. re-atmt : 0 ...
•29:11:2021 13:46:10: Valid status LTE for SIM:1...
•29:11:2021 13:46:10: Internal-LTE SIM 1 not connecting. re-atmt : 1 ...
•29:11:2021 13:46:14: Valid status LTE for SIM:1...
•29:11:2021 13:46:14: Internal-LTE: connection failed ...
•29:11:2021 13:46:24: >>== Returned for Internal-LTE ret -1 ==<<
•29:11:2021 13:46:24: Start: 4G device test error
29:11:2021 13:47:13: UplinkLteDetails: ALERT! Sim failed with No service
Violation - Dropping Call too many violations –
IP Source Address Violation - Dropping Call too many violations <311480657407291> Bad ipv4 address 100.75.153 - Expected ipv4 address 100.89.187.155 - Total source violations 10
fpapps[6061]: <399814> <6067> <DBUG> |fpapps| <STUN> stun_log_run_tes_type : Expired: NAT-binding for test-run Binding total_retries: 3 Vlan: 4095 messagesfpapps[6061]: <399815> <6067> <INFO> |fpapps| <STUN> stun_log_run_tes_type : Sent Request: NAT-binding for test-run Binding total_retries: 4 Vlan: 4095
Solution9004-LTE tips to debug
Useful commands and logs to collect before contacting TAC support
•Show usb
•Show inventory
•Show uplink
•Show uplink cellular details
•Show uplink cellular connection-logs lte-logs
•Show uplink cellular signal
•Show usb verbose
•Show ip health-check
•Show crypto-map ipsec-map
•Show crypto ipsec sa
•Gateway logs tech-support & shell outputs with help of TAC support.
Sample of working command output
(Aruba9004-LTE_BC_57_3A) [mynode] #show uplink cellular details
Modem Name : Internal-LTE
SIM Tray : Inserted
Active SIM Detected : SIM1 / (Verizon )
Active SIM Type : Physical
Link Status : Connected
Frequency Band : LTE BAND 66
Frequency Band Config Type : Manually-Configured
Signal Strength (RSSI) : Average (-65 dBm)
RSRP (LTE) : -96 dBm
Cell ID : 9A34D2E
ARFCN (LTE) : 67086
SINR : 9
IMEI : 869710030170512
IMSI : 311480661793550
Access Technology : FDD LTE
APN : ims
PLMN : 311480
Roaming Service : Enabled
Data limit : Not set
Data billing date : Not set
Data usage : 0 MB
GPS Status : ON
LTE Module MTU : 1428
Network mode : AUTO