IETF Logo Mail Archive

Re: [TICTOC] Enterprise profile update

"Dowd, Greg" <Greg.Dowd@microsemi.com> Wed, 12 March 2014 20:02 UTC

Return-Path: <Greg.Dowd@microsemi.com>
X-Original-To: tictoc@ietfa.amsl.com
Delivered-To: tictoc@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1CAA11A074A for <tictoc@ietfa.amsl.com>; Wed, 12 Mar 2014 13:02:03 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.6
X-Spam-Level:
X-Spam-Status: No, score=-2.6 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001] autolearn=ham
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 nr8H2zERPB0A for <tictoc@ietfa.amsl.com>; Wed, 12 Mar 2014 13:02:00 -0700 (PDT)
Received: from na01-bl2-obe.outbound.protection.outlook.com (mail-bl2lp0205.outbound.protection.outlook.com [207.46.163.205]) by ietfa.amsl.com (Postfix) with ESMTP id 057E41A04D2 for <tictoc@ietf.org>; Wed, 12 Mar 2014 13:01:59 -0700 (PDT)
Received: from CO1PR02CA001.namprd02.prod.outlook.com (10.242.160.21) by BY2PR02MB348.namprd02.prod.outlook.com (10.141.140.153) with Microsoft SMTP Server (TLS) id 15.0.893.10; Wed, 12 Mar 2014 20:01:45 +0000
Received: from BY2FFO11FD016.protection.gbl (2a01:111:f400:7c0c::117) by CO1PR02CA001.outlook.office365.com (2a01:111:e400:1014::21) with Microsoft SMTP Server (TLS) id 15.0.898.11 via Frontend Transport; Wed, 12 Mar 2014 20:01:45 +0000
Received: from avsrvexchhts1.microsemi.net (208.19.100.21) by BY2FFO11FD016.mail.protection.outlook.com (10.1.14.148) with Microsoft SMTP Server (TLS) id 15.0.888.9 via Frontend Transport; Wed, 12 Mar 2014 20:01:44 +0000
Received: from SJSRVEXCHHTS1.microsemi.net (10.241.34.105) by avsrvexchhts1.microsemi.net (10.100.34.105) with Microsoft SMTP Server (TLS) id 14.2.347.0; Wed, 12 Mar 2014 13:01:44 -0700
Received: from SJSRVEXCHMBX1.microsemi.net ([fe80::19b5:ac43:d8de:5120]) by sjsrvexchhts1.microsemi.net ([::1]) with mapi id 14.02.0347.000; Wed, 12 Mar 2014 13:01:24 -0700
From: "Dowd, Greg" <Greg.Dowd@microsemi.com>
To: Douglas Arnold <doug.arnold@meinberg-usa.com>, "tictoc@ietf.org" <tictoc@ietf.org>
Thread-Topic: [TICTOC] Enterprise profile update
Thread-Index: AQHPPi1eBr8WMCicuUq6V+2F/hm7i5rd3sBQ
Date: Wed, 12 Mar 2014 20:01:23 +0000
Message-ID: <8D2BF679AAC7C346848A489074F9F8BF4DF7D6@sjsrvexchmbx1.microsemi.net>
References: <CACQYgzE106JaKArgc=3HKkKcrdvSy5PmK-A0=_ZMdfrFUJbrtQ@mail.gmail.com>
In-Reply-To: <CACQYgzE106JaKArgc=3HKkKcrdvSy5PmK-A0=_ZMdfrFUJbrtQ@mail.gmail.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [10.200.160.250]
Content-Type: multipart/alternative; boundary="_000_8D2BF679AAC7C346848A489074F9F8BF4DF7D6sjsrvexchmbx1micr_"
MIME-Version: 1.0
X-EOPAttributedMessage: 0
X-Forefront-Antispam-Report: CIP:208.19.100.21; CTRY:US; IPV:NLI; EFV:NLI; SFV:NSPM; SFS:(10019001)(428001)(199002)(189002)(377454003)(53754006)(80022001)(53416003)(93136001)(80976001)(15202345003)(31966008)(65816001)(95416001)(74502001)(92726001)(94946001)(15975445006)(87936001)(47446002)(81686001)(16796002)(83072002)(16236675002)(76796001)(56816005)(74876001)(90146001)(33656001)(85852003)(93516002)(76786001)(69226001)(53806001)(19300405004)(19580405001)(63696002)(20776003)(92566001)(84326002)(55846006)(6806004)(50986001)(49866001)(4396001)(85306002)(47976001)(46102001)(74706001)(47736001)(74366001)(2656002)(51856001)(44976005)(87266001)(81542001)(79102001)(77096001)(83322001)(95666003)(512954002)(97336001)(56776001)(86362001)(54316002)(94316002)(74662001)(76482001)(54356001)(81816001)(81342001)(77982001)(19580395003)(97186001)(71186001); DIR:OUT; SFP:1102; SCL:1; SRVR:BY2PR02MB348; H:avsrvexchhts1.microsemi.net; CLIP:208.19.100.21; FPR:881AF115.12FA87D1.30D33FB7.40F49C49.202F1; MLV:sfv; PTR:InfoDomainNonexistent; A:1; MX:1; LANG:en;
X-Forefront-PRVS: 01480965DA
Received-SPF: None (: microsemi.com does not designate permitted sender hosts)
X-OriginatorOrg: microsemi.com
Archived-At: http://mailarchive.ietf.org/arch/msg/tictoc/Et-1CrMUiPePxeGYntynNFmWXnA
X-Mailman-Approved-At: Wed, 12 Mar 2014 15:43:56 -0700
Subject: Re: [TICTOC] Enterprise profile update
X-BeenThere: tictoc@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: Timing over IP Connection and Transfer of Clock BOF <tictoc.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/tictoc>, <mailto:tictoc-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/tictoc/>
List-Post: <mailto:tictoc@ietf.org>
List-Help: <mailto:tictoc-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/tictoc>, <mailto:tictoc-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 12 Mar 2014 20:02:54 -0000

Hi Doug,
                Because of some of the difficulties, or lack of support, in getting multicast deployed, has anyone considered directed broadcast for the sync/fup pairs?  That would be similar to the ntp deployment models that have broadcast/directed broadcast (unicast sent to network address) with "ranging" provided by client unicast requests.


From: TICTOC [mailto:tictoc-bounces@ietf.org] On Behalf Of Douglas Arnold
Sent: Wednesday, March 12, 2014 12:42 PM
To: tictoc@ietf.org
Subject: [TICTOC] Enterprise profile update

Hello Everyone,

Please note that a new version of the proposed Enterprise Profile was uploaded approximately one month ago.  http://datatracker.ietf.org/doc/draft-ietf-tictoc-ptp-enterprise-profile/

Changes, other than minor typos, are:

1. Elimination of the Unicast only and Multicast only modes of operation.  The only mode of operation is the hybrid multicast/unicast mode.  In this mode the master sends sync and announce as multicast, and it responds to delay request messages "in kind".  In other words a delay response is unicast if the delay requests is unicast, and multicast if the delay requests is multicast.

2. The option for multiple simultaneous masters uses separate timing domains instead of the alternate master flag.  Here I am attempting to guess how the next revision to IEEE 1588 will go.

3.  The prohibition against distributing time zones remains unchanged.  See the posts to the tictoc reflector by Kevin Gross and John Fletcher for a good discussion on the pros and cons of this choice.  http://www.ietf.org/mail-archive/web/tictoc/current/maillist.html

Please take a look and tell me what you think?

--
Doug Arnold
Principal Technologist
JTime! Meinberg USA
+1-707-303-5559

v2.23.0 | Report a Bug | By Email