[c-nsp] OSPF areas?

[sthaug at nethelp.no]

> Not convinced multiple areas do anything for us aside from complicate things.
> Plus I have run into the situation where an intra-area route is
> preferred by OSPF even though an inter-area route might actually be
> better.

As far as I remember that behavior is mandated by the OSPF RFC.

> If I were doing it again I would seriously consider running OSPF for
> infrastructure, and iBGP for the "Customer Edge." I like the idea of
> separating out the edge from the core routing wise. This would provide
> a lot of control over policy. But perhaps that would be
> overengineering too.

Customer routes in iBGP, backbone links in IGP is *very* common in
service provider environments.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no