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Forum Discussion
LM1200 repeatedly dropping link
I recently purchased an LM1200-100NAS to serve as an LTE failover connection for my homelab and noticed a strange issue while setting up my pfSense-based router to use the LM1200 as a secondary WAN c...
I have the same UDM Pro setup with LM1200 on WAN2. My SIM is a Verizon BYOD data-only plan. The modem will connect and operate fine, until I swap the WAN interface in the UDM console to simulate a WAN failover. The moment the UDM Pro attempts to get a DHCP address, the modem will reset itself. I've tried both bridge and router mode with the same results.
Same here, actually with a Ubiquiti USG (Unifi Security Gateway).
Verizon 4G SIM, BYOD w/ a public static IP,
I got the LM1200 in bridge mode, have the USG configured properly, but the moment it attempts to use the LTE network, which 99% of the time it will never actually establish a connection.
If it does actually connect to the LTE network, it will only for a brief moment, then seemingly "restart" where you lose connectivity to the webpage AND loss of internet. So I can only assume the device is restarting itself. It will repeat this forever, but if you let it remain disconnected from LTE, you can login to the device and play with settings, it's just actually connecting is where it stops working.
This is using the latest Unifi Controller, USG firmware, and latest Netgear firmware. Even after factory resetting it and just putting it into bridge mode, no dice.
This is the same behavior I'm seeing. I'll add that if I log into my UDM Pro and add a static route on the command line:
ip route add 192.168.1.5 dev eth9
Then I can use the web interface and see that the device is connected, etc. When I swap the WAN interfaces and try to actually use the modem, it resets itself as you describe.