Meraki MX67C Router 4G Cellular set up

[lvsanita]

Dear All,

We have a Meraki router MX67C and we have a SIM card that can connect to any network, like 5G too. We want to use this SIM as 4G backup for our network.

As we know, this type of router is compatible with 4G only.
5G is not supported.

When we test this SIM card with a mobile for example, we see that it can connect to 5G and 4G network too.

When we insert the SIM to the router, the status is "connecting" and the service is not able to get established, the SIM details are not loading to the Meraki dashboard despite of the APN settings that our SIM provider suggests to use.

We suspect that this is happening because 5G is available, and the router is trying to connect to that network but it's not possible, and it doesn't fall to 4G due to some reason.

Maybe some further settings would be needed on the Meraki router to force the connection to 4G.

We contacted our SIM provider we asked them to block 5G, but they rejected our request.

We would appreciate if anybody can help us in this matter.

Thank you in advance...

[javalins · Accepted solution]

Make sure you are on the most recent code and if still not success, open up a support ticket.  They should be able to pull modem logs and help identify what is happening.

[lvsanita]

Thank you for your feedback. We proceeded as per your advice.

We asked Cisco Meraki to help, they were checking the logs from the router in real time, and they identified that the APN settings of the cellular were getting rejected. When the APN was rejected, we added back, but rejected again, and so on forever.

We tried to set the APN with using a mobile, also through the Meraki Dashboard, but did not work.

Finally we tried the Local Status Page of the MX as per Cisco's advice and input the APN configuration settings as described in the documentation linked here: 
https://documentation.meraki.com/General_Administration/Tools_and_Troubleshooting/Using_the_Cisco_Me...

And this worked finally. The Cellular was connected and stabilized.

I wanted to share my experience because maybe this will be useful for somebody else too in the future.

Thanks again.