I have setup the RUTX50 router with two SIM cards. One SIM card is for a private 5G SA network (n28 and n78) and the other one is for a public 5G NSA network (n28 and n78 + LTE). I have noticed that after FW upgrade to RUTX_R_00.07.11.1 the router does a SIM switch every 2 hours. The modem FW is RG501QEUAAR12A11M4G_04.201.04.201.
I have not configured the router to do SIM switch after any certain time. The primary network to be used is the SIM slot 1 with 5G SA and the secondary is the SIM slot 2 with 5G NSA. I have enabled SIM switch to be done on No Network, On network denied and On data connection fail. None of the criteria’s mentioned for SIM switch are occurring but still a switch happens every two hours.
I disabled SIM switch, but what happens is that when the router is connected with primary SIM in slot 1 (5G SA), then after two hours it looses the connectivity completely.
From the Status → Network → Mobile I can see that the router is registered to the correct network, but the Data connection state is disconnected and the router does not receive any IP address from the network. On the 5G core network side I have configured static IP for the IMSI and it does not use DHCP for changing the IP address. So there is no need for the router to refresh the WAN IP.
This happens with both RUTX_R_00.07.11.1 and RUTX_R_00.07.11.2. I have not tried RUTX_R_00.07.11.3, but according to the changelog there is nothing there that would affect this behavior.
We would like to review the logs from your device to investigate the issue further. A form has been sent to you for this purpose. Once completed, we will contact you privately. Please use the ticket ID “11211” for reference.
I don’t have connection to the routers right now so I am not able to check. If I remember correctly VoLTE is set to Automatic for both SIM cards. I need to verify that once I go onsite to take troubleshooting log from the routers and to recover them.
Could you share a screenshot of your SIM Switch configuration for both SIMs?
If you have them configured, Auto Reboot or any other connectivity-check services configuration would also be appreciated.
In case this issue is not caused by misconfiguration, you could also try disabling IMS services on the device by logging into it’s SSH/CLI and running the following command:
gsmctl -A 'AT+QCFG="ims",2'
Make sure to disable VoLTE before running this command!
Additionally, does your 5G SA SIM have access to the public internet? If no, then make sure to not use AutoAPN on the SIM1 mobile interface and instead specify the APN manually (it uses public well-known DNS servers to verify connectivity).
I have switched off the SIM switch at the moment and only running with SIM1. SIM1 is using 5G SA network that has Internet access. The only network available for SIM 1 is 5G SA. The issue still persists as after a restart the router and SIM1 is connected but after 2 hours the data connection state goes to disconnected and the router looses the mobile network connectivity. VoLTE is switched off. Have tried using both manual APN and automatic APN but both setting gives the same issue.
Firmware is RUTX_R_00.07.11.3.
Internal modem firmware version is RG501QEUAAR12A11M4G_04.201.04.201
Update on this issue. The same issue is also seen with SIM2 that is using public 5G/LTE network. The router stays connected 2 hours after a restart and after that the data connection is disabled. I have now two RUTX50 routers that are behaving this similar way. Both are on the latest FW.
So… two RUTX have the same issue?? Sorry… I just a tech/nerd guy… But, I don’t believe that is a hardware/software issue… because happen with two devices, maybe I am wrong…
Can you test with anoher sim card from another telecom?
Use one sim card from telecom A in rutX_a
and
use another sim card from telecom B in rutX_b ?
I found a similar issue in the forum " RUTX50 continous lose of wan ip"
I implemented the solution for to that issue, and now the both routers have been running connected for more than 2 hours.
Adding the line option dhcp ‘0’ to the config interface ‘mob1s1a1’:
Log in to your router via CLI (more details here: Command Line Interfaces)
Run the command vi /etc/config/network
Locate config interface ‘mob1s1a1’ and press “i” to enter edit mode
Add the line option dhcp ‘0’ under the mobile configuration section
Press “Esc”, then type :wq and hit Enter to save and close the file
Seems there has been some changes what comes to the dhcp for the mobile interface. And I would say that those changes have been implemented in either the device or the modem FW as the only changes done prior to first observing the issue was a FW upgrade. Before that the routers had been running without any issues for several months.
