Internet failover

[bruci3]

Hi guys,

My company has 2 internet lines from separate ISP, I am looking at setting up Opnsense failover, so if 1 internet fails, it will automatically fail over to the other internet.

Just trying to clarify, do I follow this guide then: https://docs.opnsense.org/manual/how-tos/multiwan.html

So this setup only requires 1 Opnsense box which connects to both internets?

I also found CARP setup which allows HA so 2 Opnsense box, not sure if this is what I need or not. https://wiki.opnsense.org/manual/how-tos/carp.html

So just to clarify,

1) Multi WAN setup is setup failover for 2 or more internet services, if 1 internet fails, failover to other internet?
2) CARP setup is used for only 1 internet service, and failover is only for the Opnsense boxes, not used for multiple internet?

Is it possible to also combine CARP + Multiwan setup i.e. 2 internet services and 2 Opnsense boxes?

[bruci3]

Doing some googling, and found this:
https://docs.netgate.com/pfsense/en/latest/book/highavailability/multi-wan-with-ha.html

This looks like the setup that I want. This should work in Opnsense?

Its pretty much a combined CARP + multi WAN setup yeah?