Re: [Teas] Martin Vigoureux's No Objection on draft-ietf-teas-actn-framework-14: (with COMMENT)

Martin Vigoureux <martin.vigoureux@nokia.com> Fri, 25 May 2018 08:03 UTC

Return-Path: <martin.vigoureux@nokia.com>
X-Original-To: teas@ietfa.amsl.com
Delivered-To: teas@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 0BB14124239; Fri, 25 May 2018 01:03:08 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.911
X-Spam-Level:
X-Spam-Status: No, score=-1.911 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, T_DKIMWL_WL_HIGH=-0.01] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=nokia.onmicrosoft.com
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 x7reD5J6dhHa; Fri, 25 May 2018 01:03:04 -0700 (PDT)
Received: from EUR01-HE1-obe.outbound.protection.outlook.com (mail-he1eur01on0118.outbound.protection.outlook.com [104.47.0.118]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id CA3D81201FA; Fri, 25 May 2018 01:03:03 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nokia.onmicrosoft.com; s=selector1-nokia-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=+LfBpz8l4Kx8aiehaWdjzmS5OGT21cV1uVQ6Z7zHOfU=; b=J7dVEYEpv7nHybHODslkfiK+Yl/zvYhhYgJuj2f7yoI25T/ns7tCl/6EgWU0AQVjnjCu4bm/h60hCZo02p1mRK7clQCBMQgPc0K4R0fLk8SZ6svwO/IgxhgA0h4qJvVa88HVbzF5RAOynPI800SbvYh9Pn27uhO1wFhBsam3dpE=
Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=martin.vigoureux@nokia.com;
Received: from [IPv6:2a01:cb04:a1a:4c00:f443:6b8b:e1f8:5e65] (2a01:cb04:a1a:4c00:f443:6b8b:e1f8:5e65) by VI1PR0701MB2510.eurprd07.prod.outlook.com (2603:10a6:800:6f::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.797.8; Fri, 25 May 2018 08:03:00 +0000
To: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>, "adrian@olddog.co.uk" <adrian@olddog.co.uk>, 'The IESG' <iesg@ietf.org>
Cc: "draft-ietf-teas-actn-framework@ietf.org" <draft-ietf-teas-actn-framework@ietf.org>, "teas-chairs@ietf.org" <teas-chairs@ietf.org>, "teas@ietf.org" <teas@ietf.org>, "vbeeram@juniper.net" <vbeeram@juniper.net>
References: <152715220506.30129.5178063481055865022.idtracker@ietfa.amsl.com> <074a01d3f34b$08369d10$18a3d730$@olddog.co.uk> <616b6d2f-d7b9-10e5-7414-5d961cd14389@nokia.com> <VI1PR07MB316736406F74CBAF550D735AF06A0@VI1PR07MB3167.eurprd07.prod.outlook.com> <37a75335-6136-4805-e349-5c96c338db26@nokia.com> <VI1PR07MB3167DE560D7D498E40BA865FF0690@VI1PR07MB3167.eurprd07.prod.outlook.com>
From: Martin Vigoureux <martin.vigoureux@nokia.com>
Message-ID: <60682ba9-aae6-186f-8c9e-5f8f157cea90@nokia.com>
Date: Fri, 25 May 2018 10:02:56 +0200
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0
MIME-Version: 1.0
In-Reply-To: <VI1PR07MB3167DE560D7D498E40BA865FF0690@VI1PR07MB3167.eurprd07.prod.outlook.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-GB
Content-Transfer-Encoding: 8bit
X-Originating-IP: [2a01:cb04:a1a:4c00:f443:6b8b:e1f8:5e65]
X-ClientProxiedBy: MRXP264CA0027.FRAP264.PROD.OUTLOOK.COM (2603:10a6:500:14::15) To VI1PR0701MB2510.eurprd07.prod.outlook.com (2603:10a6:800:6f::7)
X-MS-PublicTrafficType: Email
X-MS-Office365-Filtering-HT: Tenant
X-Microsoft-Antispam: UriScan:; BCL:0; PCL:0; RULEID:(7020095)(4652020)(8989080)(5600026)(48565401081)(4534165)(4627221)(201703031133081)(201702281549075)(8990040)(2017052603328)(7193020); SRVR:VI1PR0701MB2510;
X-Microsoft-Exchange-Diagnostics: 1; VI1PR0701MB2510; 3:9mFXzOatSeA2o7I4AKfjlKPA3WgO+hx1YV1hxaWjsoWqBWnCv4FY9LzRSKR2Qk8spTfiYvDS7ugHVWI/JGLkF1xS/J3uL8KuDsy3c3nAvtz+Ez7/MMgSaOIDBaqAkl6dD7zV/3xUbRQyxqvZvEYlqZS/eqTPMjXEYUfTqjX+62SB1/8WfGe8MZNXwOJdCLDAW19nQ4xZk3s8orZGLrEslW9JAqv0l+e5Rye2hKPMfH+7u9T2HUJwoh8NfFVrMqCb; 25:5EvK2lC9fgjZUZ2FlWjq8tz6OXS3uWqrzssx1hGrtqWs0YxE19xqNJXndm9bJl6771LHpTARkEXhm3G3/gxtYL3jLzJSCDNKH0J/Aq9Srp0hu9BQEWuKVYz+lAff2i1Fk87jf4qHRoi1ERZOukY2r6loY2qRBJQXOl/QzgNIRP44TmfM+1y0Z7g+5FVGxkzBbgNSiK5d59mydeqqZu1fza86ggOrRty0+P+Abm08EewZ9msXiZ3Xz/BK3CwAtCz3CWNSDyc1QFC2iWvfxXKWyCsJujuPnMXPAqlWPnJQfB52F1hfoUebjG52RPkNLpC8lbNgRo2STUahCDIrviyUvw==; 31:eDJBvN0rEQ6sEaUjs8Bm5/atK5awjnWmbr2/C9Vv46poOU4ZvssMS5nOmZJJSUMavNn+k7ZGK37uKvtoYwTrD0SgXcr1AvDNKUKK3FZMNP8Rm9cnsRA0f5Npmqn7Ed6lrtIgNN/1lUUeUkONgFCk2JQLqnO9amjpjxnE8nGEbI0k1wZ5Dt3hUkTe3lDO2OL4FrpE3X2l+XOQN5XkqoAlmURBfKS0EbVsHwZi4gLM5YI=
X-MS-TrafficTypeDiagnostic: VI1PR0701MB2510:
X-Microsoft-Exchange-Diagnostics: 1; VI1PR0701MB2510; 20: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; 4:CrY2gRWv/kvqaRotqyionFI4QSHSRMxq5Y28atgHjA2NlOgEotGlcpBludn5msvFrLktgWWH5mlZqK6lOGXEiXuAOpJ4LZeFihDZ9hZs9pG1KEVUys3jZGXzCvCp4wmCx5Es2xWIx7e3oQgLPyWSeZEWyBfscXwxLZ7bwrCzWtNer1m5LxQmpsxoIbTlAD8gXs6tzcj3r5mvMvTNFdyBFqsD7xJ0fEbN9YyiRqeF8WZQ5b4L4VPNI6Dnb0v34WbZkAFy8ucDAw+BJtUek7Ou3Q==
X-Microsoft-Antispam-PRVS: <VI1PR0701MB25103DE3EDC5E944602B47148C690@VI1PR0701MB2510.eurprd07.prod.outlook.com>
X-Exchange-Antispam-Report-Test: UriScan:;
X-MS-Exchange-SenderADCheck: 1
X-Exchange-Antispam-Report-CFA-Test: BCL:0; PCL:0; RULEID:(6040522)(2401047)(5005006)(8121501046)(3002001)(3231254)(11241501184)(806099)(944501410)(52105095)(93006095)(93001095)(10201501046)(6055026)(149027)(150027)(6041310)(20161123560045)(20161123562045)(20161123558120)(20161123564045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(6072148)(201708071742011)(7699016); SRVR:VI1PR0701MB2510; BCL:0; PCL:0; RULEID:; SRVR:VI1PR0701MB2510;
X-Forefront-PRVS: 06833C6A67
X-Forefront-Antispam-Report: SFV:NSPM; SFS:(10019020)(376002)(39380400002)(346002)(39860400002)(396003)(366004)(189003)(199004)(377424004)(186003)(65826007)(81156014)(16526019)(81166006)(8676002)(53936002)(93886005)(47776003)(65806001)(65956001)(67846002)(54906003)(31686004)(7736002)(305945005)(5660300001)(36756003)(8666007)(105586002)(68736007)(106356001)(6246003)(64126003)(97736004)(86362001)(31696002)(2501003)(478600001)(46003)(486006)(4326008)(11346002)(6116002)(3260700006)(25786009)(50466002)(229853002)(8936002)(316002)(52116002)(2486003)(52146003)(23676004)(52396003)(6666003)(58126008)(386003)(44832011)(2870700001)(476003)(2616005)(6486002)(2906002)(446003)(76176011)(1706002)(110136005); DIR:OUT; SFP:1102; SCL:1; SRVR:VI1PR0701MB2510; H:[IPv6:2a01:cb04:a1a:4c00:f443:6b8b:e1f8:5e65]; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1;
Received-SPF: None (protection.outlook.com: nokia.com does not designate permitted sender hosts)
X-Microsoft-Exchange-Diagnostics: =?utf-8?B?MTtWSTFQUjA3MDFNQjI1MTA7MjM6ZEUxUzEvTldlTHBxWmVxN2RiVXVkTU9w?= =?utf-8?B?anBvcnRqcEFwVWtrZ293SzFoN3FUU1JoWW5SNWhLdG1XVW9DN2RuM1ZkYVFs?= =?utf-8?B?Lzh3T0tjaUdOSHI2REVwRDdpVWJXMW9RWmlLbEw5elVLMzJUMzQ2QUFoT0FM?= =?utf-8?B?WGd1aG96RlpnQnNmUUxTMElkRmUrT3BudC9wOWJlTzFXV2JOM1QvYlFxWUY4?= =?utf-8?B?allLVlBydDh4RVYzVGFFeEpSMmRuOWlLRGpjekpwMmlXblB5T2QxRGNrNEt2?= =?utf-8?B?VllUeDZPM054ZlF2czA2bEtQdC9SSXVGZENMMkYrWUdjY1JrWGlZTS9HZmc2?= =?utf-8?B?V1UyYkh5Z1ZZay80MU1DU1l4U1V0SDdxOG5pUWMrNlNlS1h4UHE1d2JYcmU3?= =?utf-8?B?NDhVT2UrTFFQSVpXb2pyREJqa3NWTnIxcHZOZ2VMZGlnYkRZMFpJb2VPMUsz?= =?utf-8?B?N2szNlFiaFN4cmt2cWx3WWd2elJ0UmZicWRSNTJQQllGS1pabE81YW00VWEx?= =?utf-8?B?N1FzVmxNNmI5eDdWcnRtSnZ2VjZ6STcyKzhNYXlNQml0WEtvWHFaNkhMQWZa?= =?utf-8?B?b05tTUpaaGM0MGZpNzRRR2UxOUcwaW0zMVRpdEtWbWpWakQwUVlvcEUvR05m?= =?utf-8?B?ekNyUkJUcUMxTExkWTl2d3FXZzRwRm50ZXM2RXJ0enFmREtsa3J2MDYzZmdS?= =?utf-8?B?b0lYNXYvejUwY2ZOazMwSHVoaWtxQ3ltK3YwbDF5OTRQa1lhd0FlQjRtMGd2?= =?utf-8?B?RWdmYm03TXdZUWJ5NUg3Y0FJKytqNCtvdWZPaUd0TktuUUF6MUpCT1ZrTTZG?= =?utf-8?B?dEo0Snk2U1kyQ3N3cDBUZlMrZ0xKN2hvS3BOV3VhTFh4V2NhSFI0eHN4OVFD?= =?utf-8?B?M2tVZnQwcG01Yk10V3ZaS0FHUkJocGdMNzY0T09Ucnc1VzIvNlVlMU8vZFZX?= =?utf-8?B?Wkc0Z09GNWVmUXI5SUJkOHVBaTREVjdCYm5kVDQxNXh3ODh6em03cnQ4UkZB?= =?utf-8?B?aGRMam53TzRyMlZ6VnRNb1dPRGxIN3ZZVWR2WlU5NnJ1Y1d6dHIyUHpxRW9W?= =?utf-8?B?a2VZQlJvVytUbldaQ01DVndGT0hiblFqQitqam03bFNjOVlSdU95eXNtZ0JP?= =?utf-8?B?WWNqSFFlWC9tcUs5SjdHMmNrdE54S3BpVk9nVnJWVXMvcUhQOTFuU2NZRTJ2?= =?utf-8?B?bU9iUHNZNXdCUzkzMnNqZnpOSlltTnBmVjdma2pOZTJhUjRJdkRQODA3ejN3?= =?utf-8?B?VzNZbUhjZFF3bnRjTG1VMFQ5QWxSaGsyUExmYVFDeE10QWE4V2RWMTk5WWpk?= =?utf-8?B?c1hHUE0vb2xwNU0rZW84RHNIc2xzS2p0MjlpZzdZOWtSMno5d0lYczBtYjE0?= =?utf-8?B?Yk1KYXEyT0xTbEg4cTNiSlRRTHJjQXk0QjBNZnU5TUc4d0lkTVloQlBVajMv?= =?utf-8?B?TjcrcDBtdFF0RUpBZUhRUTJ0bmc2MkQvMlcwODRETlYxci9JTy8rR0hDSzRT?= =?utf-8?B?dlJEQTB3QXFDQTRJb0xTSXB3bFNWU0RrQ2pSOGx2TzJMaGxYTVJJSXdlQ09Y?= =?utf-8?B?ZU5qMGp4R2NnVzZCcHhTYlJNU1BKYnVjM3oyMHJ0QmpCd3FZMHE3L1dObGNT?= =?utf-8?B?Y2FJZVpmMys2bVgwdE51enF4bTRmbDVkTUVjTGhRK0c4dDQ0MlJFM1g5enNP?= =?utf-8?B?dkthOGZ1bzZVRFNtb3FYV0I2eFJ5aFFZVUdrV0syVEd6TTZVNlpFVFNwRXo4?= =?utf-8?B?NGUwM2dpelhzTWpnS3drYks5S0tTRytIVGVrTEduUGpNZVUxYitGRmZpajUx?= =?utf-8?B?R05iTndSVU0zcWxVaE5BT2s5NmZEeHhBVXJFaEVLbytiOFFlTytkcWdWYUdP?= =?utf-8?B?RWZaYmw4blgwSnprSk1aOEM2MEFGOEc5YTlMc1ZQdTdvR0xBYlVjOXppbXFD?= =?utf-8?B?Z2Zpc3U0b1VBRzlFMk1zcXoyQUY2Rkhxc1FUL1c2U3c2OGNFWSsyTVhxUTNQ?= =?utf-8?B?b3NjdHRNVzBYc3dXbURkemhOWnVsYjhCQnJ6WHlnPT0=?=
X-Microsoft-Antispam-Message-Info: Lbyo+1hf2+zj8kGgkUfvtFCfhzzBKzTE8RQI3C60L0EIjMnNRwZtvqz3ZA60uJJU4/85dcYHwe0WHS87aLtq+1f4i+FIUsWOaiiOH29Ik/4QudYXK4KwKUwhHfn0QADmiSGFMXfc9qpK5wPCqjLmLWF27+f8TsKjlOJ9qSF5HNtm0e4vKzi7CoAk3/LhOphzLBcDaDPmAhi4QP096Fl64AHcH1jgLDMy4qC6vxftjRf1T7IaWWCbj250JObdnxxM
X-Microsoft-Exchange-Diagnostics: 1; VI1PR0701MB2510; 6:qggRSMcSKrDbSLGvVm2TOWWveAtecVEfI4A7obA9JBFaubXl0febpPAyrYaBZ28o+mXLuhivxNna29DZyOx49IyZSZxqieIPkj8B09VtfjmbQ7k3mN4+DEngq7zycup5W3trgSdR4yv4nUdlHnqqrJbTfVo3hURj+WYq4yJtxJ9ZQwNpq1V6rz6OIqAG2JV1GESVSb0eS1eXcxS73stS2XRwX/+e8rq4IYNunKMIweKlv5K2q8tY89hr4oYtbRu0VDEiy/gkZDHFL01NkwyWmi49h2f8SpSMUVE1F/QRmFEiW0WrW6haFlYDSLG5E2TBeDun3rKcURbbcFa6SWsNhaeH6nrJRiojEUmOd9JeHiqgT2EvLsTcC0qwBTjGBVP/85dQMpfTjG8KSOY+XPpdcSa2DGRzeJJO3jFmsf8vLjY81cnR1piJGsh8SxkYlVdfWpWKAZI1/Gx0PEyXcvTtdQ==; 5:PP0ipk2T26Sv1uFAoRyj3UEEz85WuvhGUo0gesn/AP8DM+Mo/nf6tNI6gqRfwJhtXD7OpnOwWAOVDqTEkvGg40Pj/6RTi/1Hxq8olDGTxXoBVNlp0rlybS9PfgvAP1ZmlRRUP4Qe1IWjMWTFL4LJj9ZWa0T3KAUmQUywnXAz5Ow=; 24:Fppszad4trh6yv6vEWRZl2BLS5r+BmmElGwbGrYCsjF05pAUzr7ZN9pCXeCSRCVbOre0FZ67z3JS+PXtgHtK3a0utyTFLrzIyFrHu5Wkv8k=
SpamDiagnosticOutput: 1:99
SpamDiagnosticMetadata: NSPM
X-Microsoft-Exchange-Diagnostics: 1; VI1PR0701MB2510; 7:Y2tOkdIfQZ9O0A0LuamCKfuUBmtF71QKcq7Ljg4BR+efHL67VVv5SLUTUNZUFz5kMCKe95zmcbm/DLatnGVEicbKo94SDKHsHMr81vGe4yW4D+hrZFpicXyAF7FfU5ourKjeQhBLSysKKzUK2v+pEQbQsYrpARmmYd9NbBe8RlJa+J+NlQFqFwW0cx1Lrz0KpN8mmEEh1BzlCafWiy6KrtpToVzSJ1C5KQI8LGmzTtZ3daR6FS5cdn/EIw82M8Zc
X-MS-Office365-Filtering-Correlation-Id: ac445fbe-4503-472b-db9e-08d5c215ef4c
X-OriginatorOrg: nokia.com
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 May 2018 08:03:00.2061 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: ac445fbe-4503-472b-db9e-08d5c215ef4c
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: 5d471751-9675-428d-917b-70f44f9630b0
X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR0701MB2510
Archived-At: <https://mailarchive.ietf.org/arch/msg/teas/TxVESt9J5-qhaMO38MwqavJmmtY>
Subject: Re: [Teas] Martin Vigoureux's No Objection on draft-ietf-teas-actn-framework-14: (with COMMENT)
X-BeenThere: teas@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: Traffic Engineering Architecture and Signaling working group discussion list <teas.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/teas>, <mailto:teas-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/teas/>
List-Post: <mailto:teas@ietf.org>
List-Help: <mailto:teas-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/teas>, <mailto:teas-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 25 May 2018 08:03:09 -0000

Thank you Daniele.

I had one outstanding question:

Fig. 1 shows the Customer in relation with the Service Provider but Fig. 
2 shows a boundary between Customer and Network Operator. Are the NO and 
SP merged in Fig. 2?

Thx
-m

Le 2018-05-25 à 8:28, Daniele Ceccarelli a écrit :
> Hi Martin,
> 
> cleaning up a bit
> [snip]
> 
>>> [DC] We’re referring to the documents that describe the ACTN MPI and
>>> CMI interfaces. (which is basically a set of YANG models like e.g. the
>>> TE-Topology, TE-tunnel, etc). Basically the idea is: “I’m not telling
>>> you here what you have to implement to be compliant with and ACTN MPI,
>>> but it you can implement and ACTN MPI on top of one of the boxes
>>> listed above, such box can be put into the ACTN controllers hierarchy
>>> and that works just fine”.
>> ok ...
>> So you're saying that what an implementation would have to comply with is
>> out of the scope of this document. Why not be explicit about that?
>>
> [>DC] Exactly. Yes, worth saying it.
> 
>> What about my comment on NBI?
> [>DC] missed it sorry. Since it occurs just once we can extend it.
> 
> [snip]
>>>
>>> 4.1. MDSC Hierarchy
>>>
>>> Can there be more than two levels in the MDSC hierarchy? In other
>>> words, can an MDSC-L for an MDSC-H be itself an MDSC-H for an MDSC-L?
>>> As a side note, since I made the mistake while writing this, you have
>>> two occurrences of MSDC (instead of MDSC) in the doc .
> [>DC] will fix it too.
>>>
>>> [DC] exactly, yes.
>> Wouldn't it be worth saying it?
> [>DC] Ok. What about this addition in section 4.1:
> 
> OLD
> The hierarchy of MDSCs can be seen in Figure 4.
> 
> NEW
> The hierarchy of MDSC can be recursive, where an MDSC-H is in turn an MDSC-L to an higher level MDSC-H. An example of hierarchy can be seen in Figure 4.
> 
> 
> 
>>>
>>> Cheers
>>>
>>> Daniele