[44291] in North American Network Operators' Group
Re: ISP network design of non-authoritative caches
daemon@ATHENA.MIT.EDU (Alex Bligh)
Sun Nov 18 05:21:15 2001
Date: Sun, 18 Nov 2001 10:19:22 -0000
From: Alex Bligh <alex@alex.org.uk>
Reply-To: Alex Bligh <alex@alex.org.uk>
To: Sean Donelan <sean@donelan.com>, nanog@merit.edu
Cc: Alex Bligh <alex@alex.org.uk>
Message-ID: <1797053574.1006078761@[195.224.237.69]>
In-Reply-To: <Pine.GSO.4.40.0111170218450.17375-100000@clifden.donelan.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Errors-To: owner-nanog-outgoing@merit.edu
--On Saturday, 17 November, 2001 4:48 AM -0500 Sean Donelan
<sean@donelan.com> wrote:
> We know this isn't good engineering practice, because another national
> ISP with millions of subscribers configured their network the same way,
> and experienced a multi-hour service disruption affecting most of their
> users a couple of years ago when an error blocked access to their two
> caching-only, name servers.
You mean there are national ISPs out there, who have exactly 2
caching nameservers, as opposed to configure their clients with
2 IP addresses (perhaps always the same 2) which perform name
resolution? Wow. Is this some sort of retro fashion?
--
Alex Bligh
Personal Capacity
