On 16 September 2014 13:04, Gavin Atkinson <[log in to unmask]> wrote:
> On Tue, 2014-09-16 at 08:49 +0100, Terry Burton wrote:
>> ISC's SNS-PB [1] seems to fit the bill and we have been quoted ~$1000
>> p.a. Anycast, multi-master, high-volume...
>>
>> A couple of questions if I may:
>>
>> Firstly, does anybody have experience with this service (or a similar
>> service that they can recommend)?
>
> I have experience with ISC SNS-COM, though not from an .ac.uk context
> (one of my other hats is as part of the cluster administrator team for
> freebsd.org)
>
> We host the DNS for freebsd.org on SNS-COM, which is the "commercial"
> varient of SNS-PB, and have done since early 2009. I believe we're on
> the commercial offering purely because it existed before SNS-PB. We
> have an average query rate of between 50-150 qps, though that can easily
> ramp up to 1500+/sec at times, which has obviously never been an issue
> for the service.
Hi Gavin.
I no longer see references to the SNS-COM service so my wild guess is
that they've converged the infrastructures under a single service.
> In all the time we've been using it, I can only remember one issue -
> July 21st this year a massive DoS attack against .il and .ua (both
> hosted on SNS-PB) caused a slowdown on some of their anycast DNS
> servers. We don't believe we ever actually lost DNS services in any
> area during the time and zone transfers from us continued to take place
> throughout, though we did lose access to the management interfaces
> intermittently.
The high availability is reassuring although I wouldn't expect much
less due to it leveraging the F-root infrastructure.
Information about the management interfaces for SNS-PB seems to be
scarce. If a can be a bit cheeky, a brief description of what
configuration options and reporting is available for SNS-COM would be
gratefully received if you happen to know?
Thanks for the testimonial.
Terry
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