>> so it is heavily routed using L3 on the core 'switches'? makes a lot >> of sense. > Lots of switches will happily forward layer 3 packets.
and a lot of so-called switches will happily *route* at L3, which is i think the point. in this case, heavily subnetting a LAN, it makes a lot of sense. otoh, i did not believe in the fad of using 65xxs at the bgp global edge. while it was temporarily cheap, two years later not a lot of folk had that many boats which needed anchoring. randy