Re: [netmod] [Netconf] LC on YANG Library (bis)
Alexander Clemm <alexander.clemm@huawei.com> Tue, 13 February 2018 21:25 UTC
Return-Path: <alexander.clemm@huawei.com>
X-Original-To: netmod@ietfa.amsl.com
Delivered-To: netmod@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 312CE126E01; Tue, 13 Feb 2018 13:25:58 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.23
X-Spam-Level:
X-Spam-Status: No, score=-4.23 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
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 gdr2tAuxB7Qb; Tue, 13 Feb 2018 13:25:55 -0800 (PST)
Received: from huawei.com (lhrrgout.huawei.com [194.213.3.17]) (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 6072D126B72; Tue, 13 Feb 2018 13:25:55 -0800 (PST)
Received: from lhreml704-cah.china.huawei.com (unknown [172.18.7.107]) by Forcepoint Email with ESMTP id 93B318EA3B49A; Tue, 13 Feb 2018 21:25:51 +0000 (GMT)
Received: from SJCEML701-CHM.china.huawei.com (10.208.112.40) by lhreml704-cah.china.huawei.com (10.201.108.45) with Microsoft SMTP Server (TLS) id 14.3.361.1; Tue, 13 Feb 2018 21:25:52 +0000
Received: from SJCEML521-MBS.china.huawei.com ([169.254.2.168]) by SJCEML701-CHM.china.huawei.com ([169.254.3.93]) with mapi id 14.03.0382.000; Tue, 13 Feb 2018 13:25:46 -0800
From: Alexander Clemm <alexander.clemm@huawei.com>
To: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
CC: Mahesh Jethanandani <mjethanandani@gmail.com>, NETCONF WG <netconf@ietf.org>, NETMOD WG <netmod@ietf.org>
Thread-Topic: [netmod] [Netconf] LC on YANG Library (bis)
Thread-Index: AQHTm47nGQKkuQuITEyr+4DYs4MJdKOiyLPwgACNf4D//3uHkIAAj9IA//+InpA=
Date: Tue, 13 Feb 2018 21:25:46 +0000
Message-ID: <644DA50AFA8C314EA9BDDAC83BD38A2E0EAE82BD@sjceml521-mbs.china.huawei.com>
References: <F10CE657-FC6B-491B-A8DF-0CFEE98B863C@gmail.com> <644DA50AFA8C314EA9BDDAC83BD38A2E0EAE81CB@sjceml521-mbs.china.huawei.com> <20180213194821.cwbwwmy7bqhvkfsd@elstar.local> <644DA50AFA8C314EA9BDDAC83BD38A2E0EAE8224@sjceml521-mbs.china.huawei.com> <20180213202858.uvowmjtx2uk4snyz@elstar.local>
In-Reply-To: <20180213202858.uvowmjtx2uk4snyz@elstar.local>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [10.209.216.242]
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-CFilter-Loop: Reflected
Archived-At: <https://mailarchive.ietf.org/arch/msg/netmod/siRRUXh1JB6rlLy4Vw7NYsR3i90>
Subject: Re: [netmod] [Netconf] LC on YANG Library (bis)
X-BeenThere: netmod@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: NETMOD WG list <netmod.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/netmod>, <mailto:netmod-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/netmod/>
List-Post: <mailto:netmod@ietf.org>
List-Help: <mailto:netmod-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/netmod>, <mailto:netmod-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 13 Feb 2018 21:25:58 -0000
My proposal is to add this to the YANG data model. I think this logically belongs to YANG library which is why I would like to see it there. I also think it will be useful to many implementations. All, probably not, but they have also survived without YANG library for a while:-) Of course, it is always possible to write another draft or do a bisbis. Cheers --- Alex > -----Original Message----- > From: Juergen Schoenwaelder [mailto:j.schoenwaelder@jacobs-university.de] > Sent: Tuesday, February 13, 2018 12:29 PM > To: Alexander Clemm <alexander.clemm@huawei.com> > Cc: Mahesh Jethanandani <mjethanandani@gmail.com>; NETCONF WG > <netconf@ietf.org>; NETMOD WG <netmod@ietf.org> > Subject: Re: [netmod] [Netconf] LC on YANG Library (bis) > > I must have missed your actionable proposal that is relevant for _all_ NETCONF > and RESTCONF implementations. > > YANG data models are extensible so lets use that. > > /js > > On Tue, Feb 13, 2018 at 07:58:37PM +0000, Alexander Clemm wrote: > > Well, we need a general solution for that. YANG-push is just one use case. > There are other cases where there will be "metadata" (that does not pertain to > instance data) and capabilities that clients want to discover. YANG library (in > itself providing "metadata" about what a server supports and is capable of) is an > excellent place to maintain this information. It also provides the opportunity to > be systemic about it, as opposed to requiring everyone to define their own little > custom extensions. > > --- Alex > > > > > -----Original Message----- > > > From: Juergen Schoenwaelder > > > [mailto:j.schoenwaelder@jacobs-university.de] > > > Sent: Tuesday, February 13, 2018 11:48 AM > > > To: Alexander Clemm <alexander.clemm@huawei.com> > > > Cc: Mahesh Jethanandani <mjethanandani@gmail.com>; NETCONF WG > > > <netconf@ietf.org>; NETMOD WG <netmod@ietf.org> > > > Subject: Re: [netmod] [Netconf] LC on YANG Library (bis) > > > > > > Alexander, > > > > > > I disagree. This YANG Library is mandatory for all implementations; > > > what you talk about seems to concern only implementations that > > > support YANG push. Hence, this is an extension that should go in its own > module. > > > > > > /js > > > > > > On Tue, Feb 13, 2018 at 07:38:31PM +0000, Alexander Clemm wrote: > > > > Hi, > > > > > > > > I have taken a look at this document. > > > > > > > > My main comment is that one aspect that is missing, that I believe > > > > should be > > > added, concerns the inclusion of certain metadata about the modules. > > > Specifically, in the context of YANG-Push we had a discussion about > > > being able to mark nodes that are notifiable on change. This is > > > just one particular use case of a more general issue; in YANG-Push > > > after much debate the conclusion was for now to simply make > > > implementors aware of this issue and advise that a solution to this > > > must be provided, with the clear understanding that eventually a standard > solution should be defined. > > > > > > > > Since the goal of YANG-Library is to allow clients to find out > > > > what is actually > > > supported on a given server, this is the right place to keep this > > > information. One possible way to address this would be, for a given > > > module, to maintain a list of "meta-info", with a key "meta-tag", > > > and a list with references to the nodes to which the metadata > > > applies. In the case of notifiable-on-change, you would have a list > > > with one entry "notifiable-on-change", and then the list with the node > definitions to which this tag applies. > > > > > > > > Editorial nit: > > > > 2nd paragraph Introduction: informaton --> information > > > > > > > > Thanks > > > > --- Alex > > > > > > > > From: Netconf [mailto:netconf-bounces@ietf.org] On Behalf Of > > > > Mahesh Jethanandani > > > > Sent: Thursday, February 01, 2018 11:00 AM > > > > To: NETCONF WG <netconf@ietf.org> > > > > Cc: NETMOD WG <netmod@ietf.org> > > > > Subject: [Netconf] LC on YANG Library (bis) > > > > > > > > WG, > > > > > > > > The authors of rfc7895bis have indicated that they believe the > > > > document is > > > ready for LC[1]. > > > > > > > > This starts a two week LC on the > > > > draft<https://tools.ietf.org/html/draft-ietf- > > > netconf-rfc7895bis-04>. The LC will end on February 15. > > > > > > > > Please send your comments on this thread. Reviews of the document, > > > > and > > > statement of support are particularly helpful to the authors. If you > > > have concerns about the document, please state those too. > > > > > > > > Authors please indicate if you are aware of any IPR on the document. > > > > > > > > Thanks. > > > > > > > > [1] > > > > https://www.ietf.org/mail-archive/web/netconf/current/msg13980.htm > > > > l > > > > > > > > Mahesh & Kent > > > > > > > > > > > _______________________________________________ > > > > netmod mailing list > > > > netmod@ietf.org > > > > https://www.ietf.org/mailman/listinfo/netmod > > > > > > > > > -- > > > Juergen Schoenwaelder Jacobs University Bremen gGmbH > > > Phone: +49 421 200 3587 Campus Ring 1 | 28759 Bremen | Germany > > > Fax: +49 421 200 3103 <https://www.jacobs-university.de/> > > -- > Juergen Schoenwaelder Jacobs University Bremen gGmbH > Phone: +49 421 200 3587 Campus Ring 1 | 28759 Bremen | Germany > Fax: +49 421 200 3103 <https://www.jacobs-university.de/>
- [netmod] LC on YANG Library (bis) Mahesh Jethanandani
- Re: [netmod] [Netconf] LC on YANG Library (bis) Juergen Schoenwaelder
- Re: [netmod] [Netconf] LC on YANG Library (bis) Martin Bjorklund
- Re: [netmod] [Netconf] LC on YANG Library (bis) Andy Bierman
- Re: [netmod] [Netconf] LC on YANG Library (bis) Robert Wilton
- Re: [netmod] [Netconf] LC on YANG Library (bis) Kent Watsen
- Re: [netmod] [Netconf] LC on YANG Library (bis) Alexander Clemm
- Re: [netmod] [Netconf] LC on YANG Library (bis) Juergen Schoenwaelder
- Re: [netmod] [Netconf] LC on YANG Library (bis) Alexander Clemm
- Re: [netmod] [Netconf] LC on YANG Library (bis) Juergen Schoenwaelder
- Re: [netmod] [Netconf] LC on YANG Library (bis) Alexander Clemm
- Re: [netmod] [Netconf] LC on YANG Library (bis) Andy Bierman
- Re: [netmod] [Netconf] LC on YANG Library (bis) Robert Wilton
- Re: [netmod] [Netconf] LC on YANG Library (bis) Ladislav Lhotka
- Re: [netmod] [Netconf] LC on YANG Library (bis) Kent Watsen
- Re: [netmod] [Netconf] LC on YANG Library (bis) Robert Wilton
- Re: [netmod] [Netconf] LC on YANG Library (bis) Juergen Schoenwaelder
- Re: [netmod] [Netconf] LC on YANG Library (bis) Andy Bierman
- Re: [netmod] [Netconf] LC on YANG Library (bis) Juergen Schoenwaelder
- Re: [netmod] [Netconf] LC on YANG Library (bis) Andy Bierman
- Re: [netmod] [Netconf] LC on YANG Library (bis) Alexander Clemm
- Re: [netmod] [Netconf] LC on YANG Library (bis) Ladislav Lhotka
- Re: [netmod] [Netconf] LC on YANG Library (bis) Ladislav Lhotka
- Re: [netmod] [Netconf] LC on YANG Library (bis) Robert Wilton
- Re: [netmod] [Netconf] LC on YANG Library (bis) Ladislav Lhotka
- Re: [netmod] [Netconf] LC on YANG Library (bis) Robert Wilton
- Re: [netmod] [Netconf] LC on YANG Library (bis) Mahesh Jethanandani