[119166] in North American Network Operators' Group
Re: What DNS Is Not
daemon@ATHENA.MIT.EDU (Simon Lyall)
Sun Nov 8 20:36:35 2009
Date: Mon, 9 Nov 2009 14:35:30 +1300 (NZDT)
From: Simon Lyall <simon@darkmere.gen.nz>
To: NANOG list <nanog@nanog.org>
In-Reply-To: <4AF75BE2.80002@evaristesys.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Sun, 8 Nov 2009, Alex Balashov wrote:
> For example, perhaps in the case of CDNs geographic optimisation should be in
> the province of routing (e.g. anycast) and not DNS?
Well my first answer to that would be that GSLB scales down a lot further
than anycast.
And my first question would be what would the load on the global routing
system if a couple of thousand (say) extra sites started using anycast for
their content?
Each would have their own AS (perhaps reused from elsewher in the
company) and a small network or two. Routes would be added and withdrawn
regularly and various "stupid BGP tricks" attempted with communitees and
prefixes.
I heard some anti-spam people use DNS to distribute big databases of
information. I bet Vixie would have nasty things to say to the guy who
first thought that up.
--
Simon Lyall | Very Busy | Web: http://www.darkmere.gen.nz/
"To stay awake all night adds a day to your life" - Stilgar | eMT.
