peering charges?

have a seperate routing policy for each local site to prevent local Mom'Pop
shop routes from getting into other region's routers. Otherwise, these
routes could turn up be BGP best routes, and when you deny them to your

Anyone has good/easy solutions to that?

Sure, you measure the propagation delay and multiply by the speed of light
and drop any routes that traveled more than 50 miles. Routers adjust the
packet time for any delay they add.

Just kidding......