Cogent recently bought or took over some of Verrio's business, maybe this has to do with that?

Tony Weasler wrote:
To set the record straight, no peering agreements were violated
between L3 and Cogent.  There is also no confirmed evidence that L3 is
blocking Cogent traffic through Cogent's Verio transit (which Cogent
pays $$ for.)  It appears that Cogent is unwilling to use this route
because it would force them to pay (Verio) per Mb/s for the
information sent to/from L3's network.  The de-peering was consistent
with the peering agreement between L3 and Cogent according to

Current NANOG consensus (whatever that's worth) is that both companies
are equally responsible for correcting their reachability issues, but
L3 initiated the de-peering process.

Peering (or Settlement Free Interconnection, SFI) is an extremely
complicated subject often involving millions of dollars to the
carriers involved.  The current NANOG thread on the subject contains a
great deal of information (and mis-information) and is a good read for
those interested in the subject.  I tend to weight the arguments made
by Patrick, Leo, Randy, Vijay, and Richard higher than most others.


On 10/6/2005 11:16 AM, Tom DeReggi created:

For those that are not aware, Level-3 vilolated its inplace agreements,
and blocked all peering connections from Cogent communications yesterday
(October 5th), and rumor has it that they are also now blocking all
Cogent assigned IP ranges, so that routing diverse paths won't be
effective.  Not much I can say about peering disputes, but blocking IPs
without cause (meaning violation of AUP) is crossing the line, and
clearly anti-competitive and a law sute soon to happen.
Level3 VOIP provider just lost our business over this one.  Can't risk
using a provider that demonstrates such practices.

If using Level3 for servers, call to complain, because otherwise you are
going to have lots of unsatisfied customers that can't get to the
servers that reside on the Cogent network.  Level 3 is doing the blocking.

For those of you using Level3 and looking to become multi-homed, nows
the chance to save.  Cogent is offering FREE one years transit service
at the same capacity as the level 3 connection.
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband

WISPA Wireless List:



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