* deepak@ai.net (Deepak Jain) [Fri 07 Oct 2005, 02:29 CEST]:
I think Cogent's offer of providing free transit to all single homed Level3 customers is particularly clever and being underpublicized.
For educational purposes, could someone elaborate on how this would work? If you're a Level3 customer with Level3 PA space (assumed, since you're already assumed to be single-homed, and therefore very unlikely to need PI or BGP) and move to a Cogent circuit with Cogent PA space, then you'd be able to once again reach Cogent's view of the 'net, but then lose Level3's view of the 'net. If, on the other hand, you move to a Cogent circuit, but keep your Level3 PA space, wouldn't that at least require Cogent to announce all of these "recircuited" customers' Level3 blocks? This could stop working if Level3 filters those announcements, again resulting in non-reachability for existing Level3 downstreams? Or, on the other hand, is Cogent's offer not exclusive of maintaining the customer's existing Level3 circuit as well, in which case the customer will probably incur more pain with juggling two circuits while not speaking BGP in the first place? Or, is there another hand? Thanks. -- Henry Yen Aegis Information Systems, Inc. Senior Systems Programmer Hicksville, New York