Re: [TICTOC] bulk an zack@eantc.de Scalable Synchronization Networks

Eldad Zack <zack@eantc.de> Wed, 28 October 2015 09:18 UTC

Return-Path: <zack@eantc.de>
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 5751E1B371A for <tictoc@ietfa.amsl.com>; Wed, 28 Oct 2015 02:18:24 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.26
X-Spam-Level:
X-Spam-Status: No, score=-2.26 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HELO_EQ_DE=0.35, RCVD_IN_DNSWL_LOW=-0.7, T_RP_MATCHES_RCVD=-0.01] 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 pyRSEAnxPsWA for <tictoc@ietfa.amsl.com>; Wed, 28 Oct 2015 02:18:22 -0700 (PDT)
Received: from mail.eantc.de (asterix.eantc.de [80.149.128.2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AA08C1B3712 for <tictoc@ietf.org>; Wed, 28 Oct 2015 02:18:21 -0700 (PDT)
Received: from eantc.de (mail [80.149.128.2]) by mail.eantc.de (8.14.4/8.14.4) with ESMTP id t9S8VetT003203; Wed, 28 Oct 2015 10:17:48 +0100 (CET)
Received: from [80.149.128.115] (helo=[80.149.128.115]) by localhost with ESMTP (eXpurgate 3.2.1) (envelope-from <zack@eantc.de>) id 563092bb-5252-50958073f792-1 for <multiple-recipients>; Wed, 28 Oct 2015 10:17:48 +0100
To: Jiangyuanlong <jiangyuanlong@huawei.com>, "'tictoc@ietf.org'" <tictoc@ietf.org>
References: <3B0A1BED22CAD649A1B3E97BE5DDD68B682834D7@szxema506-mbs.china.huawei.com> <3B0A1BED22CAD649A1B3E97BE5DDD68B6828385F@szxema506-mbs.china.huawei.com>
From: Eldad Zack <zack@eantc.de>
Message-ID: <563092BB.8030808@eantc.de>
Date: Wed, 28 Oct 2015 10:17:47 +0100
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0
MIME-Version: 1.0
In-Reply-To: <3B0A1BED22CAD649A1B3E97BE5DDD68B6828385F@szxema506-mbs.china.huawei.com>
Content-Type: text/plain; charset="windows-1252"; format="flowed"
Content-Transfer-Encoding: 8bit
Archived-At: <http://mailarchive.ietf.org/arch/msg/tictoc/WyCs9O6mcINjEvA568btv1DAJe0>
Cc: "hanliuyan@chinamobile.com" <hanliuyan@chinamobile.com>
Subject: Re: [TICTOC] bulk an zack@eantc.de Scalable Synchronization Networks
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: <https://mailarchive.ietf.org/arch/browse/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, 28 Oct 2015 09:18:24 -0000

Hello Yuanlong,

The definition of a T-GM in this draft is incomplete.
Please look at ITU-T G.8275.1, 6.2.3. There's a mapping from T-GM to 
IEEE 1588. A T-GM can also be an OC with a single PTP port.

Cheers,
Eldad

On 28/10/2015 10:01, Jiangyuanlong wrote:
> Hi all,
>
> Since the deployment of 4G mobile networks, many mobile backhaul networks are providing SyncE and/or IEEE 1588 synchronization capabilities for the cells.
> As these backhaul networks consist of thousands of nodes, the scalability of synchronization networks poses as a great challenge to service providers.
>
> This I-D provides a problem statement for scalability in synchronization networks:
> https://tools.ietf.org/html/draft-hjxl-ssn-ps-00
>
> Opinions and discussions are cordially welcome, and anyone who has interest may also drop me a private email.
>
> Best regards,
> Yuanlong
>
> _______________________________________________
> TICTOC mailing list
> TICTOC@ietf.org
> https://www.ietf.org/mailman/listinfo/tictoc

-- 
Eldad Zack
Test Engineer

EANTC AG - European Advanced Networking Test Center
Salzufer 14, 10587  Berlin, Germany
phone +49.30.3180595-43, fax +49.30.3180595-10
zack@eantc.de    http://www.eantc.de

EANTC Aktiengesellschaft
Place of Business / Sitz der Gesellschaft: Berlin, Germany
Chairman / Vorsitzender des Aufsichtsrats: Herbert Almus
Managing Director / Vorstand: Carsten Rossenhövel, Gabriele Schrenk
Registered: HRB 73694, Amtsgericht  Charlottenburg, Berlin, Germany
EU VAT No: DE 812824025