[AusNOG] ISP DNS Options

[Mark Smith]

On 3 May 2016 12:50 PM, "Mark Andrews" <marka at isc.org> wrote:
>
>
> In message <12115c50-a610-420b-a69d-ee81bac9d276 at oxygennetworks.com.au>, "
paul+ausnog at oxygennetworks.com.au" writes:
> > Hi All, we are looking at DNS Server options for an ISP business of
> > around 10,000 customers using ADSL, NBN, Ethernet, and Wireless
services.
> >
> > Currently the BIND solution which is in place is working but we are
> > wondering what people would suggest as a next step that is easy to
manage
> > and cost effective to implement and that can grow with the business to
> > handle 20-50,000 services eventually.
> >
> > Any advice would be appreciated.
> > >
> > Thanks
> > Paul
>
> What makes you think named can't handle that many clients?
>

+1

Circa 2008 two named servers were handing 50k+ ADSL customers, load shared
by alternating anycast DNS server addresses on a per- BRAS bases. That
included a view selected based on source address, which may increase
processing load over a vanilla named configuration.

CPU utilisation on your named server should be the first way you measure
your available DNS server/service capacity.

> Mark
> --
> Mark Andrews, ISC
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org
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