[AusNOG] NTP Best Current Practices Internet Draft

[Shane Chrisp]

On 2/2/19 10:20 am, Cameron Murray wrote:

+1 The NetTime client, and its free!

http://www.timesynctool.com/

> 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 
> <mailto: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
>     <mailto:markzzzsmith at gmail.com>> wrote:
>      >> On Sat, 2 Feb 2019 at 12:35, Michael Junek
>     <michael at juneks.com.au <mailto: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
>     <mailto:ausnog-bounces at lists.ausnog.net>> on behalf of O'Connor,
>     Daniel <darius at dons.net.au <mailto:darius at dons.net.au>>
>      >>> Sent: Saturday, 2 February 2019 12:31
>      >>> To: Mark Smith
>      >>> Cc: <ausnog at lists.ausnog.net <mailto: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
>     <mailto:markzzzsmith at gmail.com>> wrote:
>      >>>> The problem that occurred with 0.au.pool.ntp.org
>     <http://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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-- 
Regards

Shane Chrisp
2000 Computers & Networks Pty Ltd
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