nanog mailing list archives
Re: DNS Reliability
From: George Michaelson <ggm () algebras org>
Date: Fri, 13 Sep 2013 08:34:25 +1000
we're already outside our operating envelope, if these community expectation figures are believable. a wise man once said to me that when setting formal conformance targets its a good idea to only set ones you can honestly achieve, otherwise you're setting yourself up to be measured to fail. I don't think that necessarily competes with 'aim high' ('be all you can be') but... On Fri, Sep 13, 2013 at 8:26 AM, George William Herbert < george.herbert () gmail com> wrote:
On Sep 12, 2013, at 2:35 PM, Randy Bush <randy () psg com> wrote:Everything else remaining equal...is there a standard or expectation for DNS reliability? ... Measured in queries completed vs. queries lost.this is the wrong question. the protocol is designed assuming query failures. randyI think it's part of the right answer. Capacity and server connectivity issues, what this metric will mostly measure, do matter. The other part, more likely to get you on CNN and Reddit and the front pages of the NY Times and WSJ, is the area represented by MTBF / MTTR / etc. how often is DNS for your domain DOWN - or WRONG - and how fast did you recover. The other subthread about routeability plays into that. For BIGPLACE environments, you should be considering how many AS numbers independently host DNS instances for you, in how many geographical regions, and do you have a backup registrar available spun up... -george william herbert Sent from Kangphone
Current thread:
- Re: DNS Reliability, (continued)
- Re: DNS Reliability Joe Abley (Sep 13)
- Re: DNS Reliability bmanning (Sep 13)
- Re: DNS Reliability Niels Bakker (Sep 16)
- Re: DNS Reliability Nick Hilliard (Sep 16)
- Re: DNS Reliability bmanning (Sep 23)
- Re: DNS Reliability Phil Fagan (Sep 12)
- Re: DNS Reliability Eric Brunner-Williams (Sep 12)
- Re: DNS Reliability George William Herbert (Sep 12)
- Re: DNS Reliability George Michaelson (Sep 12)
- Re: DNS Reliability Randy Bush (Sep 12)
- Re: DNS Reliability George William Herbert (Sep 12)
- Re: DNS Reliability George Michaelson (Sep 12)
- Re: DNS Reliability Sebastian Castro (Sep 16)