[84073] in North American Network Operators' Group
Re: Replacing PSTN with VoIP wise? Was Re: Phone networks struggle
daemon@ATHENA.MIT.EDU (Petri Helenius)
Sat Sep 3 06:45:33 2005
Date: Sat, 03 Sep 2005 13:44:43 +0300
From: Petri Helenius <pete@he.iki.fi>
To: Michael.Dillon@btradianz.com
Cc: nanog@merit.edu
In-Reply-To: <OF57167D84.0688F261-ON8025706F.00367AED-8025706F.0036CEAB@radianz.com>
Errors-To: owner-nanog@merit.edu
Michael.Dillon@btradianz.com wrote:
>
>A similar problem would be created if a web server relied
>on DNS that was only hosted on servers in New Orleans.
>
>
Do you (or somebody) know of recent numbers of what percentage of
domains have all their DNS servers in;
a) same subnet
b) same AS
c) same geographical "zone" (faultline, floodplain, coastline, etc.)
Obviously if everything served by the DNS is co-located in the same
failed facility, it does not matter that much if the names resolve to IP
addresses which are unreachable anyway.
Pete
