nanog mailing list archives
Re: Numbering nameservers and resolvers
From: "Patrick W. Gilmore" <patrick () ianai net>
Date: Mon, 16 Aug 2010 08:04:56 +0100
Composed on a virtual keyboard, please forgive typos. On Aug 16, 2010, at 7:49, Mike <mike-nanog () tiedyenetworks com> wrote:
Hi Folks, I am needing to renumber some core infrastructure - namely, my nameservers and my resolvers - and I was wondering if the collective wisdom still says heck yes keep this stuff all on seperate subnets away from eachother? Anyone got advice either way? Should I try to give sequential numbers to my resolvers for the benefit of consultants ... like .11, .22 and .33 for my server ips?
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.) 2) Consider trading secondary NS with another AS. This is for authorities only, recursive NSes should be on-net only. 3) Try not to use the first /24 in a large prefix. See as7007 incident for why, although that is probably less likely today. 4) Using easily memorized numbers for at least one authority & one resolved will help your NOC, but should not override other considerations. That's a start, I'm sure others will have more suggestions. -- TTFN, patrick
Current thread:
- Numbering nameservers and resolvers Mike (Aug 15)
- Re: Numbering nameservers and resolvers Patrick W. Gilmore (Aug 16)
- Re: Numbering nameservers and resolvers Chris Adams (Aug 16)
- Re: Numbering nameservers and resolvers Owen DeLong (Aug 16)
- Re: Numbering nameservers and resolvers Matthew Palmer (Aug 17)
- Re: Numbering nameservers and resolvers Sven Olaf Kamphuis (Aug 17)
- Re: Numbering nameservers and resolvers Jared Mauch (Aug 17)
- Re: Numbering nameservers and resolvers Joe Greco (Aug 17)
- Re: Numbering nameservers and resolvers Phil Vandry (Aug 18)
- Re: Numbering nameservers and resolvers Lyndon Nerenberg (Aug 18)
- Re: Numbering nameservers and resolvers Chris Adams (Aug 16)
- Re: Numbering nameservers and resolvers Joe Greco (Aug 17)
- Re: Numbering nameservers and resolvers Chris Adams (Aug 17)
- Re: Numbering nameservers and resolvers Patrick W. Gilmore (Aug 16)