[155611] in North American Network Operators' Group
Re: Return two locations or low TTL [was: DNS caches that support
daemon@ATHENA.MIT.EDU (Dobbins, Roland)
Mon Aug 20 06:50:23 2012
From: "Dobbins, Roland" <rdobbins@arbor.net>
To: NANOG list <nanog@nanog.org>
Date: Mon, 20 Aug 2012 10:49:44 +0000
In-Reply-To: <0953B8D9-ED04-48ED-ACB9-18EA4C9CB9AA@ianai.net>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Aug 20, 2012, at 5:24 PM, Patrick W. Gilmore wrote:
> But I do not think returning multiple A records for multiple datacenters =
is as useful as lowering the TTL.
Some folks do this via various GSLB mechanisms which selectively respond wi=
th different records based on the assumed relative topological distance bet=
ween the querying resolver and various server/service instantiations in di=
fferent locations.
-----------------------------------------------------------------------
Roland Dobbins <rdobbins@arbor.net> // <http://www.arbornetworks.com>
Luck is the residue of opportunity and design.
-- John Milton
