[149583] in North American Network Operators' Group
Re: Question regarding anycasting in CDN setup
daemon@ATHENA.MIT.EDU (Brett Watson)
Wed Feb 8 15:05:10 2012
From: Brett Watson <brett@the-watsons.org>
In-Reply-To: <CAJ0+aXbEoCsbhM9bmn9zEwxMf153AJg_cEXD+zKaMurg4WGe3Q@mail.gmail.com>
Date: Wed, 8 Feb 2012 12:04:22 -0800
To: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Feb 8, 2012, at 11:58 AM, Anurag Bhatia wrote:
> Mike
>=20
> I can also have a single DNS
>> server give 192.0.2.80 out to queries sourced from a US IP Address,
>> 198.51.100.80 for queries sourced from a German IP Address and
>> 203.0.113.80 to queries sourced from a Chinese address (djbdns has a
>> module for this for example).
>=20
>=20
> I have never did such setup, but I assume it works as you say. I =
wonder how
> it finds a US based system from IP quickly (since it's DNS server)?
Here is *one* method if you obtain a feed of geo-ip data from someone =
like Maxmind:
http://phix.me/geodns/
Several DNS providers have different methods and different geo-ip data =
vendors.
-b=
