INTERNET <=> CABLE MODEM <=> OPNsense <=> OSPF-ROUTER <=> Client Computer
I've got a problem with OSPF, in that it keeps advertising that it has a default gateway even when the internet is unreachable to OPNsense. My OSPF router has other paths with a higher cost to the internet, but because OPNsense keeps advertising the default route my Client Computers get routed to nowhere.
Originally I thought it was because the cable modem(OPNsense gateway for static IP) is up, so I added 8.8.8.8 as the monitor IP for that gateway and it now correctly shows Offline when the upstream provider goes down, but it still seems to advertise a default route to downstream OSPF routers.
Does anyone know how to configure this correctly? I can only find an option to always advertise default route which is the opposite of what I want, and the manual reads as though the default should be to not distribute.
This is an FRR feature which does not interact with gateway monitoring. As long as the cable is not unplugged, it will think that it is online. I do not know if there is any FRR setting to check it differently.
I really appreciate the response. That's what I was afraid of. I'll dig into FRR docs. Thanks