Richard A Steenbergen writes:
For anyone keeping score, the last two times Cogent was depeered, it responded by intentionally blocking connectivity to the network in question, despite the fact that both of those networks were Sprint customers and thus perfectly reachable under the Sprint transit Cogent gets from Verio. While no one has come forward to say if the Cogent/Verio agreement is structured for full transit or only Sprint/ATDN routes, Cogent has certainly set a precedent for intentionally disrupting connectivity in response to depeering, as a scare tactic to keep other networks from depeering them.
Without getting into the question of what is "right", it's perfectly plausible that the Cogent-Verio interconnection is structured such that Verio didn't send Cogent routes to FT via Sprint. Consider the hypothetical case where Verio might peer with FT. Joe