Re: [netmod] Query on Announcing Conformance Information in the <hello> Message

Robert Varga <nite@hq.sk> Fri, 28 April 2017 16:31 UTC

Return-Path: <nite@hq.sk>
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 60C3612EADD for <netmod@ietfa.amsl.com>; Fri, 28 Apr 2017 09:31:29 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -0.102
X-Spam-Level:
X-Spam-Status: No, score=-0.102 tagged_above=-999 required=5 tests=[BAYES_20=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RP_MATCHES_RCVD=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=hq.sk
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 gyEaOAOIvMhJ for <netmod@ietfa.amsl.com>; Fri, 28 Apr 2017 09:31:27 -0700 (PDT)
Received: from mail.hq.sk (hq.sk [81.89.59.181]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 13F1412EACF for <netmod@ietf.org>; Fri, 28 Apr 2017 09:27:03 -0700 (PDT)
Received: from nitebug.localdomain (46.229.239.158.host.vnet.sk [46.229.239.158]) by mail.hq.sk (Postfix) with ESMTPSA id 1F0B224024D; Fri, 28 Apr 2017 18:27:00 +0200 (CEST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=hq.sk; s=mail; t=1493396820; bh=MueI9Y80Wfrya7WO8GKUMipguRN49wD6Cp0K91KJJLE=; h=Subject:To:Cc:References:From:Date:In-Reply-To; b=dmr6Jzra6+La3Ckx4mr4r2IZdEtFihaY7kkZ/JwwmjKJC6R/Z7TUtjUqUrvJGQEB2 OKmKOvuf6t7HhCa0HIzhUE61fokmD7U4r4bO0dlmJ93vJ1jW7nMR3eV3WQqSF6rSY1 PILpHH1ffm9fmNg1E5e2Jb6hEYMKeDR1RpdBcNmY=
To: Andy Bierman <andy@yumaworks.com>, Dhirendra Trivedi <dhirutrivedi@gmail.com>
Cc: "netmod@ietf.org" <netmod@ietf.org>
References: <CAPSfq0bBHjfn7PgcoBqQVRK8Fupfz+UA3kOZWWJS=9WENN5=vw@mail.gmail.com> <CABCOCHR9iiLniaF2Nw6n4q-1xQqRrr_Y6QuMr=f2uAbCM=iPuw@mail.gmail.com>
From: Robert Varga <nite@hq.sk>
Message-ID: <638dd25c-909e-1d07-78f0-76e1e75549dc@hq.sk>
Date: Fri, 28 Apr 2017 18:26:53 +0200
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.0
MIME-Version: 1.0
In-Reply-To: <CABCOCHR9iiLniaF2Nw6n4q-1xQqRrr_Y6QuMr=f2uAbCM=iPuw@mail.gmail.com>
Content-Type: multipart/signed; micalg="pgp-sha512"; protocol="application/pgp-signature"; boundary="QWjqsKjJrnAvgANtPVni6HCK34hd4Bj6U"
Archived-At: <https://mailarchive.ietf.org/arch/msg/netmod/-eK2JYWAkMhnW8QZJhTZG-5uFaw>
Subject: Re: [netmod] Query on Announcing Conformance Information in the <hello> Message
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: Fri, 28 Apr 2017 16:31:29 -0000

On 20/04/17 18:35, Andy Bierman wrote:
> 
> Yes -- it looks correct.
> The structure is defined in RFC 6020:
> https://tools.ietf.org/html/rfc6020#section-5.6.4
> 

Hello Andy,

One thing that is not quite clear in RFC6020 due to not being clear what
'supported module' means.

Should deviations be applied in case a module is advertised, but is not
mentioned in a deviations parameter like this:

   <hello xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
       <capability>
         http://example.com/syslog?module=syslog
       </capability>
       <capability>
         http://example.com/my-deviations?module=my-devs
       </capability>
     </hello>

If not, does this imply that any deviation statement targeting an
external module, which does not have a matching deviations parameter
should silently be ignored?

Thanks,
Robert