[194181] in North American Network Operators' Group
Re: Facebook more specific via Level3 ?
daemon@ATHENA.MIT.EDU (Doug Porter)
Tue Mar 21 17:55:24 2017
X-Original-To: nanog@nanog.org
From: Doug Porter <dsp@fb.com>
To: =?iso-8859-1?Q?J=FCrgen_Jaritsch?= <juergen@jaritsch.at>,
"nanog@nanog.org" <nanog@nanog.org>
Date: Tue, 21 Mar 2017 21:55:14 +0000
In-Reply-To: <01f901d2a27a$a8c24720$fa46d560$@jaritsch.at>
Errors-To: nanog-bounces@nanog.org
> looks like this is also affecting other prefixes:
Many of our prefixes are only announced to peers in the metro
they originate in. Please stop obsessing about this detail; it's
not the problem.
> I understand that FB is using some type of DNS
> geo-loadbalancing and other mechanism to redirect users to
> (possibly) nearer mirrors.
We target traffic two ways. One is relatively traditional dns
global load balancing, using the resolver ip. The other
method---which steers the vast majority of our traffic---vends
urls that send people to a specific PoP based on their client ip.
It appears you're having a targeting problem. Please reach out
to our NOC to get support.
--=20
dsp
