[106395] in North American Network Operators' Group
Re: Arbitrary de-peering
daemon@ATHENA.MIT.EDU (William Waites)
Mon Jul 28 11:56:41 2008
From: William Waites <ww@styx.org>
To: "Patrick W. Gilmore" <patrick@ianai.net>
In-Reply-To: <111B2355-EF43-4F92-8E66-DD9BFF81593F@ianai.net>
Date: Mon, 28 Jul 2008 17:54:45 +0200
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
Le 08-07-28 =E0 17:29, Patrick W. Gilmore a =E9crit :
>
> One should check one's assumptions before posting to 10K+ of their =20
> not-so-close friends.
Firstly I missed the actual incident since I was off the 'net for an =20
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 =20
providing a path
between the two and their respective customers."
Which is as it should be. Then somebody (not clear who) apparently =20
took explicit steps
to stop the traffic from taking these other paths. Surprising. =20
Severing a peering relationship
is one thing, purposely filtering large swathes of the Internet over =20
other all links is quite
another.
As I said, this is surprising behaviour, but not simple de-peering. =20
And I'm sure that any
Tier 1 has enough peering relationships with enough other Tier 1 =20
networks that they can
always buy temporary transit privileges over an existing link.
-w=
