currently I have a totally bridged network but for reasons of size I decided to adopt a new configuration by inserting some routers with OSPF protocol.
I would like to implement a Core Router that implements a BGP session with my ISP. Subsequently with the OSPF protocol I would like to make the routers communicate as in the following network diagram. So far everything is working, I get the problem when I would like to go and manage the assignment of my public subnet xxx.xxx.xxx.xxx/24 assigned to me by RIPE. I would like to be able to place a number greater than 2 or more Public IPs on both the Tower 1 router and the Tower 2 router. I have read that it is actually feasible with the OSPF protocol but after several tests I could not find a working configuration. I have searched for similar examples online but have not come to any effective solution.
Thanks in advance for any help or advice