Re: [art] New Version Notification for draft-touch-time-05.txt

Joe Touch <touch@strayalpha.com> Tue, 12 November 2019 14:30 UTC

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From: Joe Touch <touch@strayalpha.com>
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Date: Tue, 12 Nov 2019 06:30:41 -0800
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To: Tony Finch <dot@dotat.at>
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Subject: Re: [art] New Version Notification for draft-touch-time-05.txt
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> On Nov 12, 2019, at 5:32 AM, Tony Finch <dot@dotat.at> wrote:
> 
> Joe Touch <touch@strayalpha.com> wrote:
>> 
>> The source above claims PTP tries to coordinate the local clock to TAI.
>> 
>> That doc confirms it isn’t a time scale, as I originally indicated.
> 
> I'm struggling to understand why things like NTP and Unix and GPS are in
> scope but PTP is not.

Unix is included as a time scale. 

The others are not time scales. I see your point that PTP could be included there but it’s not intended for wide-scale deployment over the public Internet. Synchronous Ethernet isn’t listed either. I can add a note that there are other protocols - but I do think it’s reasonable to focus on those that are ~6 orders of magnitude more widely deployed.

Joe