Today I have a single mikrotik router with 3 interfaces: internal (192.168.1.1/24), external (217.123.80.150/30) and WISP network for PPPoE connections (192.168.5.1/24). I plan to replace this unit with two new Routerboard 1000. I want to configure these routers for redundancy - if one router fails, the other should take over.
I have read most documentation, and understand the pasics of VRRP and how to configure this on the internal interface. This is the easy part. I am a bit confused, however, what to do with my other two interfaces. Should these also be defined as a VRRP interface? On my external interface I only have 1 available IP (from my ISP). What about my third interface? Will VRRP disable the PPPoE server functionality on the backup router?
I would be very happy to get some goot help here!