I have OSPF running between two Mikrotik Routers, each of them with 2 WANs configured on failover.
I have few private subnets behind each router.
Right now my OSPF Interfaces are configured like this:
ISP-A Cost : 10
ISP-B Cost: 30
Thats how I got OSPF to use ISP-A by default for all the intra-office traffic using the private subnets, and is working great.
If any of the two routers loose the ISP-A , then OSPF converge to ISP-B, and back when is again available.
Now, I just added two new private subnets on each side, for VoIP, but Id like to use by default ISP-B only for those subnets, since is the stand-by and not in use.
(I would add QoS later, etc, but I still want to use the unused link)
How can I force OSPF to add routes for the new subnets that use ISP-B without affecting all other routes that are going over ISP-A ?