Internet issues when backup WAN is having problems, even though Primary WAN is working, Link Backup
Primary WAN = FIOS
Backup WAN = 5G Hotspot with RJ45 port (not USB)
Primary WAN is working fine. When backup WAN router/modem has issues such as being powered up but offline/loss of internet connection from ISP, I experience connectivity issues across all devices (wired and WiFi). Some devices cannot connect at all to the internet while others appear to work for most things but cannot connect to external VPN or certain connections. The primary WAN is fine. When I unplug the backup WAN from the ER605 everything works fine instantly. As long as the backup WAN has an internet connection everything works fine with all traffic going through the primary WAN.
If I setup Link Backup, I would think everything should work perfectly fine as long as the primary WAN is working.