[CCAMP] R: R: Framework and Information model for G.709 Optical Transport Networks (OTN) consideration post-IETF82
"BELOTTI, SERGIO (SERGIO)" <sergio.belotti@alcatel-lucent.com> Thu, 01 December 2011 09:30 UTC
Return-Path: <sergio.belotti@alcatel-lucent.com>
X-Original-To: ccamp@ietfa.amsl.com
Delivered-To: ccamp@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C27BA21F8C11 for <ccamp@ietfa.amsl.com>; Thu, 1 Dec 2011 01:30:33 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.249
X-Spam-Level:
X-Spam-Status: No, score=-6.249 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, HELO_EQ_FR=0.35, RCVD_IN_DNSWL_MED=-4]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 8C3mlu1pfFue for <ccamp@ietfa.amsl.com>; Thu, 1 Dec 2011 01:30:33 -0800 (PST)
Received: from smail3.alcatel.fr (smail3.alcatel.fr [64.208.49.56]) by ietfa.amsl.com (Postfix) with ESMTP id AD8D521F8BB6 for <ccamp@ietf.org>; Thu, 1 Dec 2011 01:30:30 -0800 (PST)
Received: from FRMRSSXCHHUB01.dc-m.alcatel-lucent.com (FRMRSSXCHHUB01.dc-m.alcatel-lucent.com [135.120.45.61]) by smail3.alcatel.fr (8.14.3/8.14.3/ICT) with ESMTP id pB19Rmeh017365 (version=TLSv1/SSLv3 cipher=RC4-MD5 bits=128 verify=NOT); Thu, 1 Dec 2011 10:30:27 +0100
Received: from FRMRSSXCHMBSB1.dc-m.alcatel-lucent.com ([135.120.45.42]) by FRMRSSXCHHUB01.dc-m.alcatel-lucent.com ([135.120.45.61]) with mapi; Thu, 1 Dec 2011 10:29:57 +0100
From: "BELOTTI, SERGIO (SERGIO)" <sergio.belotti@alcatel-lucent.com>
To: Lou Berger <lberger@labn.net>
Date: Thu, 01 Dec 2011 10:29:56 +0100
Thread-Topic: R: [CCAMP] Framework and Information model for G.709 Optical Transport Networks (OTN) consideration post-IETF82
Thread-Index: AcyvXGeGq9O0F4fNRryud+QMBHBn4QArUzMg
Message-ID: <F050945A8D8E9A44A71039532BA344D8191875CB@FRMRSSXCHMBSB1.dc-m.alcatel-lucent.com>
References: <F050945A8D8E9A44A71039532BA344D8191305D4@FRMRSSXCHMBSB1.dc-m.alcatel-lucent.com> <4ED4C9A9.90809@labn.net> <F050945A8D8E9A44A71039532BA344D81918719D@FRMRSSXCHMBSB1.dc-m.alcatel-lucent.com> <4ED622BE.4060203@labn.net>
In-Reply-To: <4ED622BE.4060203@labn.net>
Accept-Language: en-US
Content-Language: it-IT
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
acceptlanguage: en-US
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-Scanned-By: MIMEDefang 2.69 on 155.132.188.83
Cc: CCAMP <ccamp@ietf.org>
Subject: [CCAMP] R: R: Framework and Information model for G.709 Optical Transport Networks (OTN) consideration post-IETF82
X-BeenThere: ccamp@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: Discussion list for the CCAMP working group <ccamp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ccamp>, <mailto:ccamp-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/ccamp>
List-Post: <mailto:ccamp@ietf.org>
List-Help: <mailto:ccamp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ccamp>, <mailto:ccamp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 01 Dec 2011 09:30:33 -0000
Lou, See in line BR Sergio -----Messaggio originale----- Da: Lou Berger [mailto:lberger@labn.net] Inviato: mercoledì 30 novembre 2011 13.34 A: BELOTTI, SERGIO (SERGIO) Cc: CCAMP; John E Drake Oggetto: Re: R: [CCAMP] Framework and Information model for G.709 Optical Transport Networks (OTN) consideration post-IETF82 Sergio, At a minimum, the solutions draft MUST cover what happens when a pre-G709v3 (or non-G709v3) GMPLS node exchanges CP messages with a G709v3 GMPLS node. For example, what happens when a G709v3 GMPLS node exchanges messages with a node supporting only LSC or ethernet. You can even just state something as simple as what's in rfc6002 section 2.1. This is just a matter of correct protocol behavior and should not be a "big" deal or discussion. SB> Sure You seem to also want to cover G.709v1 and G709v3 interoperability. This is a fine thing to consider, but has nothing to do with the comment. SB> I know, the aim of co-authors's mail, was exactly to ask WG whether there was interest to step forward a simple compatibility. If no interest, definitely no problem to avoid effort. On 11/30/2011 4:29 AM, BELOTTI, SERGIO (SERGIO) wrote: > Lou, > Thanks for clarification , I understood during my presentation that the comment was a remind referred to another past meeting (in which I was not present). > The aim of the mail is trying to understand how to address the "what is being done" that cannot be independent of the type of possible network scenarios. > We need to understand , particularly from company-people with per-G.709.v3 implementation(John has perfectly pointed out the issue), what could be the typical scenarios to be addressed. > We have tried to set the focus on two out of them, and we'd like to hear from WG the approval or not to work on them. > We cannot start to work before an agreement on that. > > Sergio > > > > > > -----Messaggio originale----- > Da: Lou Berger [mailto:lberger@labn.net] > Inviato: martedì 29 novembre 2011 13.02 > A: BELOTTI, SERGIO (SERGIO) > Cc: CCAMP > Oggetto: Re: [CCAMP] Framework and Information model for G.709 Optical Transport Networks (OTN) consideration post-IETF82 > > Sergio, > My comment actually comes from two meetings ago and was based on the > routing and signaling drafts each having their own compatibility > sections (sections 6 and 6.5, respectively), and the framework not > having one at all. As you note, control plane compatibility is > something typically addressed in GMPLS. I think the framework needs to > cover what approach is being taken to ensure *control plane* operation > when a pre-G709v3 GMPLS node exchanges CP messages with a G709v3 GMPLS > node. In short, the framework should say *what* is being done with > respect to CP compatibility, the routing and signaling documents should > say *how* CP compatibility is supported. > > Note that my request was not about data plane compatibility. > > Lou > > On 11/25/2011 3:52 AM, BELOTTI, SERGIO (SERGIO) wrote: >> Hi CCAMP, >> >> as outcome of the Framework and Information model for G.709 Optical >> Transport Networks (OTN) presentation, Lou Berger asked co-authors to >> provide a new section in the framework document dealing with backward >> compatibility, as summary with respect to what is already present/will >> be present in the encoding documents. >> >> In our opinion, the first thing to do is deciding which are the >> scenarios that have to be taken into account. >> >> As hypothesis we would like to consider network element domains >> composed either of G.709v1 or G709v3 network elements, >> so without having a mix of network element in the same domains. The >> motivation for this is that operators >> would not be happy with the mix because managing control plane versions >> implementing very different features >> is not practical from a network operation point of view. >> >> Please note that backward compatibility issues are to be considered >> between GMPLS versions. So for G.709v1 NE we mean >> a network element with G.709v1 HW and support of RFC4328 only. >> >> The case of a NE with G709v1 HW supporting our GMPLS drafts does not >> have backward compatibility issues because it can be considered as a >> new node with limitations. >> >> Said this the candidate scenarios may be: >> >> 1) Interworking between a G.709v1 domain with a G.709v3 domain (path is >> terminated by one G.709v1 node and G.709v3 node) >> >> 2) Interworking in the case of a G.709v1 domain - a G.709v3 domain - >> G709v1 domain (G.709v3 domain in the middle of two G.709v1 domains. The >> path being terminated on G.709v1 equipment.) >> >> We'd like to hear the opinion of the WG whether CCAMP consider >> exhaustive the type of scenarios proposed, before proceeding with any >> modification to the document. >> >> Thanks >> >> Sergio and co-authors >> >> >> *SERGIO BELOTTI* >> >> ALCATEL-LUCENT >> Terrestrial System Architect >> Optics Portfolio Evolution >> >> via Trento 30 , Vimercate(MI) Italy >> T: +39 0396863033 >> *Sergio.Belotti@alcatel-lucent.com* >> >> >> >> >> >> >> >> >> _______________________________________________ >> CCAMP mailing list >> CCAMP@ietf.org >> https://www.ietf.org/mailman/listinfo/ccamp > > > >
- [CCAMP] Framework and Information model for G.709… BELOTTI, SERGIO (SERGIO)
- Re: [CCAMP] Framework and Information model for G… John E Drake
- Re: [CCAMP] Framework and Information model for G… Lou Berger
- Re: [CCAMP] Framework and Information model for G… Lou Berger
- Re: [CCAMP] Framework and Information model for G… John E Drake
- Re: [CCAMP] Framework and Information model for G… Lou Berger
- [CCAMP] R: Framework and Information model for G.… BELOTTI, SERGIO (SERGIO)
- [CCAMP] R: Framework and Information model for G.… BELOTTI, SERGIO (SERGIO)
- Re: [CCAMP] Framework and Information model for G… John E Drake
- Re: [CCAMP] R: Framework and Information model fo… Lou Berger
- [CCAMP] R: R: Framework and Information model for… BELOTTI, SERGIO (SERGIO)