I have a Routerboard Hex and just purchased a SXT LTE6 as backup internet feed.
The Routerboard is set as Router and is connected in its Internet Port to a Starlink device. One Ethernet port is connected to a large Giga switch, which links a large network together, including (via microwave links) to a remote site.
At this remote site I have installed the new SXT LTE6, connected to the cellular network.
This is intended as a failover backup. What I want may not be possible, but:
Is there any way I can program the Routerboard to start using the SXT LTE6 for Internet if the Starlink fails?
I have seen the various failover scripts(?) but it is not clear to me how I can force the Routerboard router NOT to use its 'Internet' Port, but instead to use an IP address on the local LAN (via a single Ethernet port connected to the main Switch).
An additional question: The SXT LTE6 is set up as a Bridge. But it still has an external 'Internet' IP address with a box called "Firewall Router". Is this some unique new system to mix a Bridge with a Router?