Two companies wants to exchange some private prefixes (4K prefixes) using eBGP. Each company will have two border routers (with OSPF as IGP, and mutual redistribution & aggregate in eBGP)
So, this is a dual-homed design between the two companies.
Do you advise to run iBGP between the two border routers inside each company, or stick with only an IGP between them? Is there any best practice in this case?
AFAIK, iBGP would be good if I'm redistributing a huge amount of prefixes (INET table), but I couldn't see any other real benefits for this case.