[AusNOG] NTP Best Current Practices Internet Draft

[Cameron Murray]

Small windows client I've used for as long as I can remember called "Net
Time" allows multiple sources to be configured and runs as a service.

On Sat, 2 Feb. 2019, 12:09 pm Chris Watts <Chris.Watts at techanalysis.com.au
wrote:

> LOL!
>
> On 2/02/2019 1:05 PM, Rob Thomas wrote:
> > I am perfectly happy to sell anyone who wants one a Rasperry Pi in a
> > big heavy metal box.  I'll stick 'SUPER ACCURATE NTP SERVER' on the
> > front, and you just need to plug it in. I think AUD$1000 ex GST sounds
> > acceptable.  Please form an orderly queue to the left.  For an EXTRA
> > $800, I'll stick a GPS Time source in there, and it can be a Stratum 1
> > time server, rather than Stratum 2.
> >
> > (Yes, this is humour. If someone REALLY wants to do this, please
> > contact me off-list, and I'll happily step you through it - you're
> > looking at less than AUD$100 in hardware to create a Stratum 2 NTP
> > server)
> >
> >
> > On Sat, 2 Feb 2019 at 11:54, Mark Smith <markzzzsmith at gmail.com> wrote:
> >> On Sat, 2 Feb 2019 at 12:35, Michael Junek <michael at juneks.com.au>
> wrote:
> >>> Thats correct. Windows only has a SNTP client implemented, and not an
> NTP client. As such, it can only query a single NTP server, and does not
> have the algorithms to determine the accuracy of the time sources.
> >>>
> >>>
> >> If that's the case, I'd buy/find a 3rd party NTP client for my Windows
> >> boxes. (Don't have any so don't have this problem.)
> >>
> >>
> >>
> >>>
> >>> ________________________________________
> >>> From: AusNOG <ausnog-bounces at lists.ausnog.net> on behalf of O'Connor,
> Daniel <darius at dons.net.au>
> >>> Sent: Saturday, 2 February 2019 12:31
> >>> To: Mark Smith
> >>> Cc: <ausnog at lists.ausnog.net>
> >>> Subject: Re: [AusNOG] NTP Best Current Practices Internet Draft
> >>>
> >>>> On 2 Feb 2019, at 11:48, Mark Smith <markzzzsmith at gmail.com> wrote:
> >>>> The problem that occurred with 0.au.pool.ntp.org proving bad time
> >>>> wouldn't have had an effect if the Windows domain controller had at
> >>>> least 2 other NTP time sources.
> >>> The behaviour of OPs system implies that a PDC does not use more than
> one clock source.
> >>>
> >>> If that is true (I have no idea, but googling suggests it may be so)
> then you are going to end up relying on a single time server. In that case
> you are probably better firing up a tiny Linux VM running only ntpd (or
> chrony etc etc) which is configured for multiple pool servers and then
> point your DCs at that.
> >>>
> >>> It does seem pretty ridiculous than Windows server can't behave more
> sensibly though..
> >>>
> >>> --
> >>> Daniel O'Connor
> >>> "The nice thing about standards is that there
> >>> are so many of them to choose from."
> >>>  -- Andrew Tanenbaum
> >>>
> >>>
> >>> _______________________________________________
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