Le 08-07-28 à 17:29, Patrick W. Gilmore a écrit :
One should check one's assumptions before posting to 10K+ of their not-so-close friends.
Firstly I missed the actual incident since I was off the 'net for an extended period about that time, so apologies for any rehash.
Neither network has transit. What other path is there to take?
http://www.renesys.com/blog/2008/03/he_said_she_said_cogent_vs_tel.shtml "Then Cogent de-peered Telia and suddenly Verizon and others started providing a path between the two and their respective customers." Which is as it should be. Then somebody (not clear who) apparently took explicit steps to stop the traffic from taking these other paths. Surprising. Severing a peering relationship is one thing, purposely filtering large swathes of the Internet over other all links is quite another. As I said, this is surprising behaviour, but not simple de-peering. And I'm sure that any Tier 1 has enough peering relationships with enough other Tier 1 networks that they can always buy temporary transit privileges over an existing link. -w