[80069] in North American Network Operators' Group
Re: Slashdot: Providers Ignoring DNS TTL?
daemon@ATHENA.MIT.EDU (Dean Anderson)
Fri Apr 22 23:23:31 2005
Date: Fri, 22 Apr 2005 23:21:52 -0400 (EDT)
From: Dean Anderson <dean@av8.com>
To: Valdis.Kletnieks@vt.edu
Cc: sthaug@nethelp.no, <nanog@merit.edu>
In-Reply-To: <200504201930.j3KJUj7j009247@turing-police.cc.vt.edu>
Errors-To: owner-nanog@merit.edu
On Wed, 20 Apr 2005 Valdis.Kletnieks@vt.edu wrote:
> On Wed, 20 Apr 2005 14:00:00 EDT, Dean Anderson said:
> > On Wed, 20 Apr 2005 sthaug@nethelp.no wrote:
> > > Where do you see any connection between anycast and ignoring DNS TTL?
> > The data he showed isn't necessarilly "ignoring ttl". 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. It may not be the only
> > explanation: e.g. they could be restarting their nameservers every thirty
> > seconds. But "anycast loadbalancing" of a caching server is probably the
> > most likely.
>
> All fine and good. But nowhere in your long paragraph do you actually
> address Steinar's question, which is "What does this rant have to do with
> *ignoring* *DNS* *TTL*?"
Try actually reading the long paragraph. It starts with the interesting
sentence 'The data he showed isn't necessarilly "ignoring ttl".', and I
then explain why that is.
--
Av8 Internet Prepared to pay a premium for better service?
www.av8.net faster, more reliable, better service
617 344 9000
