Numbering nameservers and resolvers
Patrick W. Gilmore
patrick at ianai.net
Mon Aug 16 13:11:37 UTC 2010
On Aug 16, 2010, at 9:03 AM, Chris Adams wrote:
> Once upon a time, Patrick W. Gilmore <patrick at 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.)
> 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
Oooooooooobviously I was not thinking clearly, since I was only considering v4. =)
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.
More information about the NANOG