I am not totally sure how the ASes work. Doesn't the AS sit above the other routers kind of a super router that talks to the other ASes.
if had an AS would we not then need to pay for paths to reach all of the end point networks or would you just transit back via tunnels?
my understanding it that if we(in Atlanta) want our upstream to route a 44 subnet to our router over our upstream provider.
Since we don't have a way to route all traffic globally behind the AS it would not do us much good.
Maybe I am totally wrong on how this works I have just a little info....and that makes me dangerous.
or maybe you have another reason related to the tunnel systems.
Lin