[44296] in North American Network Operators' Group
Re: ISP network design of non-authoritative caches
daemon@ATHENA.MIT.EDU (Joel Baker)
Sun Nov 18 14:51:45 2001
From: "Joel Baker" <lucifer@lightbearer.com>
Date: Sun, 18 Nov 2001 12:51:08 -0700
To: Alex Bligh <alex@alex.org.uk>
Cc: Sean Donelan <sean@donelan.com>, nanog@merit.edu
Message-ID: <20011118125108.A12030@lightbearer.com>
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In-Reply-To: <1797053574.1006078761@[195.224.237.69]>; from alex@alex.org.uk on Sun, Nov 18, 2001 at 10:19:22AM -0000
Errors-To: owner-nanog-outgoing@merit.edu
On Sun, Nov 18, 2001 at 10:19:22AM -0000, Alex Bligh wrote:
>
>
>
> --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?
Yes, there are.
No, it's not fashion. Though it's about as foolish.
Names avoided to prevent NDA lawsuits. You can fill in the blanks.
--
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Joel Baker System Administrator - lightbearer.com
lucifer@lightbearer.com http://users.lightbearer.com/lucifer/
