[AusNOG] NTP Best Current Practices Internet Draft

[Chris Watts]

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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