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Re: [Ntp] Going forward with NTP - v5, v4 and approach

Doug Arnold <doug.arnold@meinberg-usa.com> Thu, 18 August 2022 21:59 UTC

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From: Doug Arnold <doug.arnold@meinberg-usa.com>
To: "Salz, Rich" <rsalz=40akamai.com@dmarc.ietf.org>, "kristof.teichel=40ptb.de@dmarc.ietf.org" <kristof.teichel@ptb.de>, NTP WG <ntp@ietf.org>
Thread-Topic: [Ntp] Going forward with NTP - v5, v4 and approach
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Date: Thu, 18 Aug 2022 21:58:49 +0000
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Subject: Re: [Ntp] Going forward with NTP - v5, v4 and approach
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Rich,

Your suggestions sound sensible to me.

Doug

From: Salz, Rich <rsalz=40akamai.com@dmarc.ietf.org>
Date: Thursday, August 18, 2022 at 4:02 PM
To: Doug Arnold <doug.arnold@meinberg-usa.com>, kristof.teichel=40ptb.de@dmarc.ietf.org <kristof.teichel@ptb.de>, NTP WG <ntp@ietf.org>
Subject: Re: [Ntp] Going forward with NTP - v5, v4 and approach
>I expect the process to work something like this:

  1.  Somewhat complete draft of ntpv5
  2.  First implementations tested with each other
  3.  Tweak first implementations to work well together
  4.  Refine draft to reflect any changes or clarifications that were needed for interoperability
  5.  Publish

In the QUIC and TLS working groups, there was the expectation that the base draft wasn’t done, and that steps 1-4 would need to be repeated multiple times. I suggest the NTP WG have the same expectation.  Also, think about defining an extension for “which version of the draft” is going out on the wire; that was a great aide to interop, and not having the extension was an indication that it’s the final RFC version.

Also define a test matrix.  Client, server, peer at same strata, peer above or below seems likely.  Look at https://interop.seemann.io/ as an (impressive!) example. And consider working with https://caniuse.com eventually.

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