Re: [mpls] Review of draft-ietf-mpls-residence-time-13

Alexander Vainshtein <vainshtein.alex@gmail.com> Wed, 22 February 2017 14:29 UTC

Return-Path: <vainshtein.alex@gmail.com>
X-Original-To: mpls@ietfa.amsl.com
Delivered-To: mpls@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E11F4129979; Wed, 22 Feb 2017 06:29:05 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.699
X-Spam-Level:
X-Spam-Status: No, score=-2.699 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com
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 CjGIyMYviCCH; Wed, 22 Feb 2017 06:29:04 -0800 (PST)
Received: from mail-it0-x233.google.com (mail-it0-x233.google.com [IPv6:2607:f8b0:4001:c0b::233]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2EAF0129971; Wed, 22 Feb 2017 06:29:04 -0800 (PST)
Received: by mail-it0-x233.google.com with SMTP id 203so2375212ith.0; Wed, 22 Feb 2017 06:29:04 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=QQoFTq3bM1daZ4ZftKifk9CtG9JK72p3PZ/XWrG2YJw=; b=PJNL6w7MO3RT7+p5466enyH9baTjcbJTzV/l/UhonuJDzSGMeEK+F9KgGiUv8K4Oc0 HHXuEO8bpdFlThC/15abpr8eMQ/y2S+SgxUWOi5KSgE0sP/7Hg2QVSgiPX78sRX5I3cq vDHPDe3KX3zBGaHcyiVrZfUHpka0GrS6LybrDAw5XpQnwDS8AUrGIJoV6EM7j6XgqkvK HKuwwksSOUKlgjUSqw0ZG1tvqpBjrdbvNAQWbsXT6S9IFRC+aoNtsiPYXh/UiZfVrwQ2 VRLlp+VOzo48e5nICsR6A3pvy3pylWPxYNGtIlrLafkMyA2y8n0eiPoSlS+elIAjQdFa TlNQ==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=QQoFTq3bM1daZ4ZftKifk9CtG9JK72p3PZ/XWrG2YJw=; b=PVGWkGExKchpsV+BjqipyGn/u0Kf3Y0lFQLoXd492VAOz26IXuGuN6OMcpW2CZ2a4M FN5xgn966eTYyiuOnsWfqtsJ6fOe7TSLox4DhI4ddCY6gZwfciKe6rdB5ksxaxJTI9a0 bUWuVkSc5OptQV0e07bp/X+yWaCxErkvAMHv53OPdEaZY6B15GZENO3VsewyTjkOMtgs SYjYUiaDGVMvXyyuEOKCGW/WfXTK+oTE7w3CTGSvgT/SKVjTqTiCCySfeKgrJTZTI66g giEQ+oTeZXsrUpPUkalxr7y12U576o+9rCHQg/ce2PQetQuoRQrvhNqaq/K0zXeAWrNz 1Huw==
X-Gm-Message-State: AMke39nCU3/bINyhttUuMGdemY2/aAIaWObK3C9YM/GaAbA6E2HRvSYpwMHc3+gerpPQmPeadf7aIU1Xupa/UQ==
X-Received: by 10.36.111.82 with SMTP id x79mr2207924itb.1.1487773743547; Wed, 22 Feb 2017 06:29:03 -0800 (PST)
MIME-Version: 1.0
Received: by 10.79.24.199 with HTTP; Wed, 22 Feb 2017 06:29:02 -0800 (PST)
Received: by 10.79.24.199 with HTTP; Wed, 22 Feb 2017 06:29:02 -0800 (PST)
In-Reply-To: <CA+RyBmV=fCrv7NfbAXZ7VPj2ngX0h-6eO6EwY7h4CiWV8PgrAQ@mail.gmail.com>
References: <148702270016.25055.10297552659599192833.idtracker@ietfa.amsl.com> <CA+RyBmWaTBNzycSyEu8BLCZA3jF2t-_vy3chosvrmurkamNEfQ@mail.gmail.com> <a812b604-89b0-b741-4ea8-e518259dbb17@nostrum.com> <CA+RyBmW8NcThCJt4WscccfTMr29JWa-7oPVaptvOdT1dgi+Q_A@mail.gmail.com> <e28d238c-f27f-6dd9-41a9-b0ff6e2fe272@nostrum.com> <CA+RyBmUzP9rDdq9un08GnY0Dzcq+0w-ty1_Fg=kGGHZ3af8JJQ@mail.gmail.com> <ca75efb7-d1ba-c9c7-593b-486dd41a7171@nostrum.com> <CA+RyBmV=fCrv7NfbAXZ7VPj2ngX0h-6eO6EwY7h4CiWV8PgrAQ@mail.gmail.com>
From: Alexander Vainshtein <vainshtein.alex@gmail.com>
Date: Wed, 22 Feb 2017 16:29:02 +0200
Message-ID: <CAA+i7Sts9XEPayyXvcV0jstX_zUohuFUdpDVSh8+gTBY_-59Tw@mail.gmail.com>
To: Greg Mirsky <gregimirsky@gmail.com>
Content-Type: multipart/alternative; boundary=001a11444e527d8c2505491f5107
Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/555iRgY-MYeOJ7bhPEqR4mCtq0Q>
X-Mailman-Approved-At: Thu, 23 Feb 2017 04:57:13 -0800
Cc: mpls@ietf.org, gen-art@ietf.org, draft-ietf-mpls-residence-time.all@ietf.org, ietf@ietf.org, Robert Sparks <rjsparks@nostrum.com>
Subject: Re: [mpls] Review of draft-ietf-mpls-residence-time-13
X-BeenThere: mpls@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: Multi-Protocol Label Switching WG <mpls.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/mpls>, <mailto:mpls-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/mpls/>
List-Post: <mailto:mpls@ietf.org>
List-Help: <mailto:mpls-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/mpls>, <mailto:mpls-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 22 Feb 2017 14:29:06 -0000

My thanks as well - to Robert for a most careful review and to Greg for
handling the draft for all these years.

Regards,
Sasha

On Feb 22, 2017 16:22, "Greg Mirsky" <gregimirsky@gmail.com>; wrote:

> Hi Robert,
> agreed. Thank you for your thorough review and the most helpful comments.
> I'll upload the update shortly.
>
> Regards,
> Greg
>
> On Wed, Feb 22, 2017 at 1:09 AM, Robert Sparks <rjsparks@nostrum.com>;
> wrote:
>
>> I would simply delete "To ensure precise accuracy in time determination"
>> and start the sentence at "These actions"
>>
>> RjS
>>
>> On 2/15/17 9:40 PM, Greg Mirsky wrote:
>>
>> Hi Robert,
>> safe travel and here's another version for your consideration. The point
>> I'm trying to convey is that the jitter is real but must be accounted not
>> as part of propagation delay but as residence time. Hope I'm getting close.
>>
>>    Each RTM-capable
>>    node on the explicit path receives an RTM packet and records the time
>>    at which it receives that packet at its ingress interface as well as
>>    the time at which it transmits that packet from its egress interface.
>>    To ensure precise accuracy in time determination these actions should
>>    be done as close to the physical layer as possible at the same point
>>    of packet processing striving to avoid introducing the appearance of
>>    jitter in propogation delay whereas it should be accounted as
>>    residence time.
>>
>> Regards,
>>
>> Greg
>>
>>
>> On Wed, Feb 15, 2017 at 11:15 AM, Robert Sparks <rjsparks@nostrum.com>;
>> wrote:
>>
>>>
>>>
>>> On 2/15/17 11:20 AM, Greg Mirsky wrote:
>>>
>>> Hi Robert,
>>> yes, you've absolutely correct in your example
>>>
>>>