Actually, most of the RBOC/ILEC's use completely seperate AS's. "FCC Regulation" being a legitimate reason to request a whole bushel of AS's from ARIN.
Try doing an ARIN whois on bellsouth, and you get... Bellsouth.Net (AS7891) BELLSOUTH-NET-BLK2 7891 - 7894 Bellsouth.Net (AS8060) BELLSOUTH-NET-BLK3 8060 - 8063 BellSouth.net Inc. (AS6380) BELLSOUTH-NET-BLK 6380 - 6389 - Dan On Wed, 13 Nov 2002, Scott Granados wrote: > Aren't some reasons for using disconnected as's regulatory based ie the > bells etc? > > > On Wed, 13 Nov 2002 [EMAIL PROTECTED] wrote: > > > > > > > inherently wrong with using a single AS in multiple locations, and > > > > advertising discrete blocks of address space in each one. The best reason > > > > to do this is for a network that you eventually plan to merge - it > > > > eliminates issues of having to make major BGP configuration changes. > > > > > > Nothing inherently wrong with it if you're paying for transit, but good > > > luck getting peering in multiple locations without presenting consistent > > > views. > > > > No problem at all. Use a tunnel. > > > > Going back to the original question: > > > > (A) Is there a reason have disconnected ASs? Sure. Does it make more sense > > than using multiple AS numbers? No. > > > > (B) Is there a reason to deaggregate? Absolutely. The biggest being rather > > bad internal allocations practiced by networks. > > > > Alex > > > > -- > > > > > > > >
