DNS Reliability

Thu Sep 12 20:48:46 UTC 2013

Good reference; thank you.

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

>
>
>
> On Thu, Sep 12, 2013 at 5:03 PM, Phil Fagan <philfagan at 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