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Re: [Ntp] Antwort: Re: New Version Notification for draft-gruessing-ntp-ntpv5-requirements-03.txt

Danny Mayer <mayer@pdmconsulting.net> Thu, 21 October 2021 19:42 UTC

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To: Doug Arnold <doug.arnold@meinberg-usa.com>, "kristof.teichel@ptb.de" <kristof.teichel@ptb.de>, James <james.ietf@gmail.com>
Cc: NTP WG <ntp@ietf.org>, Hal Murray <halmurray@sonic.net>
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From: Danny Mayer <mayer@pdmconsulting.net>
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Subject: Re: [Ntp] Antwort: Re: New Version Notification for draft-gruessing-ntp-ntpv5-requirements-03.txt
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On 10/21/21 3:18 PM, Doug Arnold wrote:
>
> Unless you are a member of the IERS, you don’t decide whether there is 
> going to be a negative leap second or not.  I suggest that the rest of 
> us focus on making sure that our products, or open source projects can 
> handle a negative leap second.
>
I agree, but negative leapseconds is fraught with problems that really 
have never been addressed or tested in NTP (PTP testing of this showed a 
lot of problems).
>
> All the more reason to make TAI the default timescale for NTPv5.
>
No, the networked world expects UTC. GPS runs on TAI but then the 
satellites have atomic clocks.

Danny

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