>Since these are designed to be regional exchanges, one would presume that
>transit is still available elsewhere.
>
>Even at the large carrier level, I should think that the priority NAPs,
>as well as the private interconnects, would contain complete information
>on the other networks to back up any failure to route at a regional exchange.Er, um, well yes, but ideally if you get peering from all the big
boys, you wouldn't need to purchase transit from someone.
Did I mention purchase anywhere? I don't think I did. It's not what I'm
talking about. What I'm talking about is a set of places in the country
where you have access to everything in your peers peoples network.
I think the idea of only exchanging local routes at any given regional
exchange is not a bad idea, but I don't see how it would really end up
working properly in a fluctuating environment.
I see absolutely nothing wrong with it as long as normal engineering
considerations are taken into account.
These would include redundancy/fallover, among many other things.
Dave