North American Network Operators Group

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Re: Cogent/Level 3 depeering

  • From: Patrick W. Gilmore
  • Date: Wed Oct 05 18:18:04 2005

On Oct 5, 2005, at 5:11 PM, Daniel Roesen wrote:

Yes, but Cogent actively risked that that this happens, and L3 did only
took active steps to sever that DIRECT relationship, but does (AFAIK)
nothing to prevent connectivity _at_all_ (which Cogent IMHO does claim).
They just make it more costly for Cogent. Cogent doesn't want to pay
the price, so no connectivity.

OF COURSE L3 could start to buy transit... but as a real tier 1 they
are prolly in the position that they won't need to.

A real tier 1 depeering another tier 1 would be a completely different
story though. :-)
This is silly.

"I don't buy transit, but you buy partial transit, so if I shut down the interconnection links (SFI or otherwise), you should buy more transit to get to me." HUH? B does not in any way follow A.

This is no different than MCI de-peering Sprint. Both sides knows what will happen long before they do it.

Given that Cogent was not yet on the
same "eye level" (no pun intended) with Level 3, I as a hypothetical
Cogent customer would blame Cogent to not having made provisions for
that case. Again, I said that from the perspective of a Cogent
customer knowing "the hierarchy" out there.
I'm very confused by what you said there. WTF has "the hierarchy" got to do with my bits getting to you?

Better question: As a "hypothetical Level 3 customer", would you blame Cogent or L3?

"Tier One" is marketing. Even the technical idea of "buys no transit" is BS. It might be well defined, but that doesn't make the term _useful_.

Cogent and L3 had _no_ interconnectivity besides the direct peering relationship. L3 knew it, Cogent knew it. L3 made a decision to sever that direct relationship, and bifurcation ensued. This was not only not a surprised, it was expected. Whether Cogent is a "tier one" or not is irrelevant to the decision, and the resulting effects.

When you can't reach the web / mail / etc. server you need, does it matter if your network is big or small, tier one or tier five? Not to me, I'm just interested in getting packets from point A to point B. From your posts, it sounds like you are OK with buying partial transit at full price - as long as you buy it from a "Tier One" provider.