Re: DNS Reliability

[Phil Fagan <philfagan () gmail com>]

Good reference; thank you.


On Thu, Sep 12, 2013 at 2:39 PM, Rubens Kuhl <rubensk () gmail com> wrote:

> On Thu, Sep 12, 2013 at 5:03 PM, Phil Fagan <philfagan () gmail com> wrote:
>
> > Everything else remaining equal...is there a standard or expectation for
> > DNS reliability?
> >
> > 98%
> > 99%
> > 99.5%
> > 99.9%
> > 99.99%
> > 99.999%
> >
> > Measured in queries completed vs. queries lost.
> >
> > Whats the consensus?
>
> ICANN new gTLD agreements specified 100% availability for the service,
> meaning at least 2 DNS IP addresses answered 95% of requests within 500 ms
> (UDP) or 1500 ms (TCP) for 51+% of the probes, or 99% availability for a
> single name server, defined as 1 DNS IP address.
>
>
> Rubens



-- 
Phil Fagan
Denver, CO
970-480-7618