IETF Logo Mail Archive

Re: [Ntp] NTPv5: big picture

Kurt Roeckx <kurt@roeckx.be> Fri, 01 January 2021 23:02 UTC

Return-Path: <kurt@roeckx.be>
X-Original-To: ntp@ietfa.amsl.com
Delivered-To: ntp@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 59A333A0DCF for <ntp@ietfa.amsl.com>; Fri, 1 Jan 2021 15:02:20 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.9
X-Spam-Level:
X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1Cn4iOa3vqk5 for <ntp@ietfa.amsl.com>; Fri, 1 Jan 2021 15:02:17 -0800 (PST)
Received: from excelsior.roeckx.be (excelsior.roeckx.be [195.234.45.115]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A85F13A0DCD for <ntp@ietf.org>; Fri, 1 Jan 2021 15:02:17 -0800 (PST)
Received: from intrepid.roeckx.be (localhost [127.0.0.1]) by excelsior.roeckx.be (Postfix) with ESMTP id 2693EA8A0062; Fri, 1 Jan 2021 23:02:14 +0000 (UTC)
Received: by intrepid.roeckx.be (Postfix, from userid 1000) id B95F61FE0DFE; Sat, 2 Jan 2021 00:02:13 +0100 (CET)
Date: Sat, 02 Jan 2021 00:02:13 +0100
From: Kurt Roeckx <kurt@roeckx.be>
To: Hal Murray <hmurray@megapathdsl.net>
Cc: Doug Arnold <doug.arnold@meinberg-usa.com>, NTP WG <ntp@ietf.org>
Message-ID: <X++p9WQ7i26jYj2A@roeckx.be>
References: <doug.arnold@meinberg-usa.com> <0DF4D79B-29BA-4DB0-A3D6-EE3B6AE807DF@meinberg-usa.com> <20210101215657.BF9E240605C@ip-64-139-1-69.sjc.megapath.net>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Disposition: inline
In-Reply-To: <20210101215657.BF9E240605C@ip-64-139-1-69.sjc.megapath.net>
Archived-At: <https://mailarchive.ietf.org/arch/msg/ntp/t5AOAnerDNm4Xgy5f2GrQlvIm0k>
Subject: Re: [Ntp] NTPv5: big picture
X-BeenThere: ntp@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: <ntp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ntp>, <mailto:ntp-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ntp/>
List-Post: <mailto:ntp@ietf.org>
List-Help: <mailto:ntp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ntp>, <mailto:ntp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 01 Jan 2021 23:02:20 -0000

On Fri, Jan 01, 2021 at 01:56:57PM -0800, Hal Murray wrote:
> 
> doug.arnold@meinberg-usa.com said:
> > I would say that the unifying themes for ntpv5 are greater flexibility, and
> > higher accuracy, compared to ntpv4.   
> 
> Do you have any ideas on how to improve accuracy?

Not documenting how it should get implemented, just document the
sources of uncertainty and how you combine them.


Kurt

v2.23.0 | Report a Bug | By Email