I know a lot of us here span networks across large areas and have multiple providers.
I want my IP address space to be redundant and I guess I can either make sure I have a ring with OSPF/ static routes, or I can BGP. Since I sell to other providers that would like BGP and I would like to preserve my routing by /24 classes via BGP. Maybe I should just use BGP at each site/area? That would restrict me to keeping the sites at /24 class size or larger though, since external BGP doesn't like anything smaller. I think that's ok, but it does lend itself to waste if I come short of using the 254 IP's or I just break the barrier into another /24 for the site. But I can't think of any way around it without relying on infrastructure to ring me back to a central BGP point or two, using OSPF inside. What do you guys do?
