@netblues said in Configure an PPPoE on an CARP IF:
This never really worked. pppoe running on a carp interface isn't an option.
It sure is. We have a few customers set up that way and working well - within boundaries. Of course in such a setup the secondary node of a CARP setup won't easily have internet which is/can be a problem and as such the setup isn't really recommended. But it IS working though. It's important to check though that both nodes on it's WAN "carrier" interface are connected to each other and the DSL modem correctly so both have access to dial-in if needed. If that's set up correctly it's a relatively simple setup:
either node gets the physical interface for the PPPoE connection assigned with its own IP, say 10.12.34.251 and .252
check pinging from one to the other and back (allow ICMP on that interface first)
then add a CARP VIP to it, e.g. .254 - that one should now be active on the primary node anad backup on the secondary node. If that is not the case you don't need to proceed with PPPoE stuff. That's basic CARP that should be working first!
If that's running you can now add the PPPoE interface but as carrier you don't choose your physical interface BUT the NEW CARP VIP you created (yes, that .254 one from above!) This ensures the PPPoE connection switches from node 1 to 2 and back if needed.
Then set up PPPoE as usual.
When finished assign that interface (pppoe0) as your WAN_PPPoE or something else like it. THAT one is your actual WAN, the other physical interface and the VIP on it are only a sort-of transfer/carrier network.
Cheers
