Aren't some reasons for using disconnected as's regulatory based ie the bells etc?
As far as I've seen they do the right thing and use multiple ASNs. Kris
On Wed, 13 Nov 2002 alex@yuriev.com wrote:
inherently wrong with using a single AS in multiple
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
luck getting peering in multiple locations without
locations, and transit, but good 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
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