[80008] in North American Network Operators' Group
Re: Slashdot: Providers Ignoring DNS TTL?
daemon@ATHENA.MIT.EDU (Chris Adams)
Wed Apr 20 14:23:04 2005
Date: Wed, 20 Apr 2005 13:20:41 -0500
From: Chris Adams <cmadams@hiwaay.net>
To: nanog@merit.edu
Mail-Followup-To: Chris Adams <cmadams@hiwaay.net>, nanog@merit.edu
In-Reply-To: <Pine.LNX.4.44.0504201346040.4574-100000@localhost.localdomain>
Errors-To: owner-nanog@merit.edu
Once upon a time, Dean Anderson <dean@av8.com> said:
> If there are
> multiple anycasted caching servers behind a specific IP address, then
> those several cache's will each have a different state. Since, [as I
> explained, and was supposed by the poster], there is "some kind of load
> balancing going on", and also since implementors of anycast caches have
> posted questions and explained their purposes [which could be seen as
> "load balancing"], this is a likely explanation.
Not really. Normally, anycasting should be stable; if you send a
request to the same IP address you will get a response from the same
server. There may be additional load balancing being done where at a
particular location that IP maps to multiple servers (we've done that
with TruCluster for example), but that has nothing to do with
anycasting.
--
Chris Adams <cmadams@hiwaay.net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.
