North American Network Operators Group|
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Re: Cogent/Level 3 depeering
At 03:37 PM 10/5/2005, Justin M. Streiner wrote:
And any ISPs who buy wholesale dialup services from either Level(3) or Cogent. Both of them offer such services, and many ISPs use these wholesale outfits rather than building their own infrastructure in every city.On Wed, 5 Oct 2005, Todd Vierling wrote:People who are single-homed to either Cogent or Level(3) are the ones who are most likely to feel the pain of broken connectivity.On Wed, 5 Oct 2005, Matthew Crocker wrote: This comes down to a little more than just "depeering" -- at least in the BGP sense. There's active route filtering going on as well if connectivity is dead; after all, I can bet the house that at least one of Cogent's network edge peers has connectivity to Level3, and vice versa.
The dialup case results in a very large number of users of a large number of ISPs being single-homed to one or the other of these outfits. Keep that in mind too when you next sign a contract for wholesale dialup service.