[128793] in North American Network Operators' Group
Re: Numbering nameservers and resolvers
daemon@ATHENA.MIT.EDU (Patrick W. Gilmore)
Mon Aug 16 09:12:52 2010
From: "Patrick W. Gilmore" <patrick@ianai.net>
In-Reply-To: <20100816130336.GA703173@hiwaay.net>
Date: Mon, 16 Aug 2010 09:11:37 -0400
To: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Aug 16, 2010, at 9:03 AM, Chris Adams wrote:
> =08Once upon a time, Patrick W. Gilmore <patrick@ianai.net> said:
>> 1) Use different prefixes. A single prefix going down should not =
kill
>> your entire network. (Nameservers and resolvers being unreachable
>> breaks the whole Internet as far as users are concerned.)
>=20
> How do you do this in the IPv6 world, where I get a single /32? Will
> others accept announcements of two /33s to better handle things like
> this?
Oooooooooobviously I was not thinking clearly, since I was only =
considering v4. =3D)
But you do what you can. Some people have only a single v4 prefixes as =
well. If you can't use more than one prefix, then don't.
Other good suggestions were things like ensuring the default exit point =
for each NS was a different vector. If you have only one exit point, =
that is not possible. But it does not mean the suggestion is bad.
--=20
TTFN,
patrick
