Re: [Ntp] The bump, or why NTP v5 must specify impulse response

"Salz, Rich" <rsalz@akamai.com> Tue, 21 April 2020 15:27 UTC

Return-Path: <rsalz@akamai.com>
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 8189F3A0DD4 for <ntp@ietfa.amsl.com>; Tue, 21 Apr 2020 08:27:37 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.1
X-Spam-Level:
X-Spam-Status: No, score=-2.1 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=unavailable autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=akamai.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 u8OK0GfubvXS for <ntp@ietfa.amsl.com>; Tue, 21 Apr 2020 08:27:36 -0700 (PDT)
Received: from mx0b-00190b01.pphosted.com (mx0b-00190b01.pphosted.com [IPv6:2620:100:9005:57f::1]) (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 E0B533A0DB2 for <ntp@ietf.org>; Tue, 21 Apr 2020 08:24:15 -0700 (PDT)
Received: from pps.filterd (m0050102.ppops.net [127.0.0.1]) by m0050102.ppops.net-00190b01. (8.16.0.42/8.16.0.42) with SMTP id 03LE6ogZ013643; Tue, 21 Apr 2020 15:09:01 +0100
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=akamai.com; h=from : to : cc : subject : date : message-id : references : in-reply-to : content-type : content-id : content-transfer-encoding : mime-version; s=jan2016.eng; bh=OjGlJhPFWHacYtOQe6XjcVKUxqtDluef1AxR1YH2v3k=; b=WWvKvitfMQcS41Rc124B5OMrK17aAw4v8nVRy8l5RBz2Ge2ag7ZtZpgAJD8r4ivySdSm a5Ks6bw0Dmawf7pfBfZVlQ7rDU12s02MORW6BnCzPGFWcoRQrPBLNPL6gy0u0L/Zkjpl SqXeVk4+qBTuXylVO4N/jUTGwJxZ9rzuq6z0CHPbMM3C19B/cQvIM9BY1TYnyog9SFCG W6g4QxwSfa4QtwIlzAtACSDzyJ6ey+icDpVyxw9FkNwvHr48WVD7l1DIh6f2IjI27U7J xv9X3D87ZqeE4SUwHQO6LB0gdSqE2uFGNDeKVVPe4AMnUVqKPNZ1bsBAvYsoZTZiGRSW Yw==
Received: from prod-mail-ppoint5 (prod-mail-ppoint5.akamai.com [184.51.33.60] (may be forged)) by m0050102.ppops.net-00190b01. with ESMTP id 30fpmdvxsp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 21 Apr 2020 15:09:01 +0100
Received: from pps.filterd (prod-mail-ppoint5.akamai.com [127.0.0.1]) by prod-mail-ppoint5.akamai.com (8.16.0.27/8.16.0.27) with SMTP id 03LE2LGt027517; Tue, 21 Apr 2020 07:09:00 -0700
Received: from email.msg.corp.akamai.com ([172.27.165.116]) by prod-mail-ppoint5.akamai.com with ESMTP id 30fyh8a34s-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Tue, 21 Apr 2020 07:09:00 -0700
Received: from USTX2EX-DAG1MB1.msg.corp.akamai.com (172.27.165.119) by ustx2ex-dag1mb3.msg.corp.akamai.com (172.27.165.121) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 21 Apr 2020 09:08:41 -0500
Received: from USTX2EX-DAG1MB1.msg.corp.akamai.com ([172.27.165.119]) by ustx2ex-dag1mb1.msg.corp.akamai.com ([172.27.165.119]) with mapi id 15.00.1497.006; Tue, 21 Apr 2020 09:08:46 -0500
From: "Salz, Rich" <rsalz@akamai.com>
To: Harlan Stenn <stenn@nwtime.org>, "Salz, Rich" <rsalz=40akamai.com@dmarc.ietf.org>, Dieter Sibold <dsibold.ietf@gmail.com>, Doug Arnold <doug.arnold@meinberg-usa.com>
CC: Watson Ladd <watsonbladd@gmail.com>, NTP WG <ntp@ietf.org>, Daniel Franke <dfoxfranke@gmail.com>
Thread-Topic: [Ntp] The bump, or why NTP v5 must specify impulse response
Thread-Index: AQHWERdfryMI5rZA9Eq5PVvcAS7kDKh3b1UAgABSFYCAAAKRAIAADJ2AgAAUVYCAAOnAgIABe/SA///6SoCAAZfsgIAH3omA
Date: Tue, 21 Apr 2020 14:08:45 +0000
Message-ID: <681BBE0F-7665-4CB1-8373-9A688508FAE7@akamai.com>
References: <CACsn0c=zzDKP6iBjPJWGF0rkqSaY3AY738ynGwDZO14sdBJ-Bg@mail.gmail.com> <CAJm83bB2A3VUxXX47Y0ubmS9Xne7PRSyV_xHY_D9YvHjqE-vFA@mail.gmail.com> <CACsn0cm3jpKZTUQ=novTgVaFhc1xCJgmUF3oOgdrzQa-HgOCUQ@mail.gmail.com> <CAJm83bAqbMMs2W3SyH+3c17wcC85paY4-_jk2SxczgsxBLyYyA@mail.gmail.com> <CAJm83bAQeR_6U3jgmbWzdus3pu+OO2_KP+M9RtbCFYOfDQy4dw@mail.gmail.com> <DB8PR02MB56111CCA23CDCF97A3C9F3E8CFDD0@DB8PR02MB5611.eurprd02.prod.outlook.com> <F7E5836A-4C7A-4A1A-B769-65EADE2C8F5C@gmail.com> <7d909ae3-a830-1270-6920-fa088a56525e@nwtime.org> <6C9832A9-E18B-4DE2-934F-9E471FC22F7B@akamai.com> <bc7920e2-dc81-ba7f-ec24-7926cda8589d@nwtime.org>
In-Reply-To: <bc7920e2-dc81-ba7f-ec24-7926cda8589d@nwtime.org>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
user-agent: Microsoft-MacOutlook/16.36.20041300
x-ms-exchange-messagesentrepresentingtype: 1
x-ms-exchange-transport-fromentityheader: Hosted
x-originating-ip: [172.19.118.45]
Content-Type: text/plain; charset="utf-8"
Content-ID: <343128A2B1BB0F4086BB789DFCDA6339@akamai.com>
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.676 definitions=2020-04-21_05:2020-04-20, 2020-04-21 signatures=0
X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=700 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-2002250000 definitions=main-2004210111
X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.676 definitions=2020-04-21_05:2020-04-20, 2020-04-21 signatures=0
X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=0 clxscore=1015 malwarescore=0 adultscore=0 impostorscore=0 mlxlogscore=684 mlxscore=0 phishscore=0 bulkscore=0 lowpriorityscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2004210111
Archived-At: <https://mailarchive.ietf.org/arch/msg/ntp/XwmrPuq2zgATiTh6uUsMZyPg648>
Subject: Re: [Ntp] The bump, or why NTP v5 must specify impulse response
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: Tue, 21 Apr 2020 15:27:39 -0000

>    NTP is a combination of two parts:

Thank you.

So if NTPv5 said that it only changes the protocol, and not the algorithms, that would be okay?