[149584] in North American Network Operators' Group
Re: Question regarding anycasting in CDN setup
daemon@ATHENA.MIT.EDU (Joe Provo)
Wed Feb 8 15:08:19 2012
Date: Wed, 8 Feb 2012 15:07:30 -0500
From: Joe Provo <nanog-post@rsuc.gweep.net>
To: nanog@nanog.org
In-Reply-To: <CAJ0+aXbEoCsbhM9bmn9zEwxMf153AJg_cEXD+zKaMurg4WGe3Q@mail.gmail.com>
Reply-To: nanog-post@rsuc.gweep.net
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Thu, Feb 09, 2012 at 01:28:07AM +0530, Anurag Bhatia wrote:
[snip]
> 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)?
Drop "ip geolocation" or "internet geolocation" into Your Favorite
Search Engine. Short answer is some folks just refer to databases
published/generated by others, some folks use DNS guesses, and some
folks measure packet arrival. And most often, there is a combination
of methods used.
--
RSUC / GweepNet / Spunk / FnB / Usenix / SAGE / NewNOG
