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.
news flash!!! "if you use a provider's address space, you're locked in!" if you don't qualify for your own address space, see http://www.google.com/search?client=safari&rls=en-us&q=vixie+multihoming+without+bgp&ie=UTF-8&oe=UTF-8 if you decide to use a provider's address space, then you can either pay the higher cost of locked-in transit pricing, or you can pay the higher cost of having to renumber whenever you want to break the lock. in a pay-me-now-or-pay-me-later scenario, you have to pick "now" vs. "later". (it's a pity that the internet, for all its power, cannot alter that rule.) -- Paul Vixie