[RTG-DIR] RtgDir review of draft-ietf-softwire-mesh-multicast-22.txt

<N.Leymann@telekom.de> Mon, 10 September 2018 15:26 UTC

Return-Path: <N.Leymann@telekom.de>
X-Original-To: rtg-dir@ietfa.amsl.com
Delivered-To: rtg-dir@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id F0240128CF2; Mon, 10 Sep 2018 08:26:14 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.309
X-Spam-Level:
X-Spam-Status: No, score=-4.309 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, T_DKIMWL_WL_HIGH=-0.01] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=telekom.de header.b=Bi8nl0RB; dkim=pass (1024-bit key) header.d=telekom.onmicrosoft.de header.b=q29Jotdq
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 kyuIYlEVdrhL; Mon, 10 Sep 2018 08:26:12 -0700 (PDT)
Received: from mailout24.telekom.de (MAILOUT24.telekom.de [80.149.113.254]) (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 246741277BB; Mon, 10 Sep 2018 08:26:07 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=telekom.de; i=@telekom.de; q=dns/txt; s=dtag1; t=1536593171; x=1568129171; h=from:to:cc:subject:date:message-id:mime-version; bh=IED/WqdhZIXHc5GfczyTVI4voGCv4I9Mk61qfxoknK4=; b=Bi8nl0RBtHqYnbBstTB+BDyCK6AfksYBqp4Zl2PCcnJaPNu0f8xqlL/a lg6ncBdnegZB8cXuHsLpvEV1qe4Q3HZOju9INsD57lS2s4Nx2xoUjSx3Q AmWunVhCyjoFdrX0q3OEoDjFUxwQKs4JtcAO10yroGrRIBBAFXUMKAora qhWMJYm98uViZQMN4zJal5DaGJRMJ1SUpaOqx8x5YPACNiEEJGrvobdzq FfEMXt62UOgjy3rodj5RhdhBZR0ZQE+qkivQdDwkLqXBzAP72f8U679SL cs3ZitHm5jayd3hThP1exbaUabcaQ8We7uKCgqnikV9/yqtfECCyakrGH A==;
Received: from qde9xy.de.t-internal.com ([10.171.254.32]) by MAILOUT21.telekom.de with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Sep 2018 17:25:42 +0200
X-IronPort-AV: E=Sophos;i="5.53,356,1531778400"; d="scan'208,217";a="120305730"
Received: from he101953.emea1.cds.t-internal.com ([10.169.118.78]) by QDE9Y1.de.t-internal.com with ESMTP/TLS/AES256-SHA; 10 Sep 2018 17:25:08 +0200
Received: from HE101953.EMEA1.cds.t-internal.com (10.169.118.78) by HE101953.emea1.cds.t-internal.com (10.169.118.78) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 10 Sep 2018 17:25:02 +0200
Received: from HE104160.emea1.cds.t-internal.com (10.171.40.36) by HE101953.EMEA1.cds.t-internal.com (10.169.118.78) with Microsoft SMTP Server (TLS) id 15.0.1395.4 via Frontend Transport; Mon, 10 Sep 2018 17:25:02 +0200
Received: from GER01-LEJ-obe.outbound.protection.outlook.de (51.5.80.18) by O365mail03.telekom.de (172.30.0.232) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Mon, 10 Sep 2018 17:22:43 +0200
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=telekom.onmicrosoft.de; s=selector1-telekom-onmicrosoft-de; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=IED/WqdhZIXHc5GfczyTVI4voGCv4I9Mk61qfxoknK4=; b=q29JotdqbwI+9rLJWugQI5LBGZdaUbwUG3kZZoYykRf2DkT5Cv+5thF6g23dOnUrLCSRHzpfww7B1nM/aAZtf8Aths9gI/HT5RvwHJIdDF0Aq0zvO2JD7XlMkgi+buw7w2C6J7OT1uLG7UK+6YoSEbDrMNZfimrfhKtfF9XLepc=
Received: from LEJPR01MB0377.DEUPRD01.PROD.OUTLOOK.DE (10.158.142.20) by LEJSPR8PMB004.DEUPRD01.PROD.OUTLOOK.DE (10.158.140.14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1122.15; Mon, 10 Sep 2018 15:25:01 +0000
Received: from LEJPR01MB0377.DEUPRD01.PROD.OUTLOOK.DE ([fe80::6150:63c0:94f4:24c]) by LEJPR01MB0377.DEUPRD01.PROD.OUTLOOK.DE ([fe80::6150:63c0:94f4:24c%3]) with mapi id 15.20.1122.019; Mon, 10 Sep 2018 15:25:00 +0000
From: <N.Leymann@telekom.de>
To: <rtg-ads@ietf.org>
CC: <rtg-dir@ietf.org>, <draft-ietf-softwire-mesh-multicast.all@ietf.org>, <softwires@ietf.org>
Thread-Topic: RtgDir review of draft-ietf-softwire-mesh-multicast-22.txt
Thread-Index: AdRJGm/H+Z+MOQmcSwy6CIWStBaA/g==
Date: Mon, 10 Sep 2018 15:25:00 +0000
Message-ID: <LEJPR01MB037757EA179E14B2AB3CA90098050@LEJPR01MB0377.DEUPRD01.PROD.OUTLOOK.DE>
Accept-Language: de-DE, en-US
Content-Language: de-DE
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
authentication-results: spf=none (sender IP is ) smtp.mailfrom=N.Leymann@telekom.de;
x-originating-ip: [164.19.4.62]
x-ms-publictraffictype: Email
x-microsoft-exchange-diagnostics: 1; LEJSPR8PMB004; 6:3t35dD31qMeS6XcPuiFI7qBmnh4ZOMvX8o7c10766AS/294Yzi4QjCo8FLDLqoVcKmfoEfmauF3KYeMJE9AOOOfMLnTQFQo7m8YDRCJnP9USNWgkhobrEUY8FDcG+YruJPmne2RrJBp5+ck8fO8gak8kkHbLMH2lFnvgKz9vOaOki0lb8i+b2y9ndJkJz/UE2/UkmRev3N4b33L7vhzKhH3mdAIwJWon1a3KqD50fXs7Pu8EAG7yWZ4PMTKiCF/xWuy/exIQyVovSrwfsr+XjkbHt/QH8m1yFFLKq6jHslvfzzHeZZ1GqTXOP+2OPRl+Gc3uRBOW/p7KCyHfKPv4j5zMFdMQmdja/qSn8MNuteqknGDhOy7o45w/0OPHA9WDEc1Hb23HAPtYnCAw9RpCfoQwMNbuuAVT08rMIVJLjQ8OVS4qVFCvsjhjzGGGDHSrzVgNpMTUmh9q0xlEZ9PofA==; 5:dxN0ghT7U0bSw5YnFNBQDlX/uKiNAOd7lWgl9OCZbV4b97Y/NJ0G5OjTD30SwaYm59hPfc/MhNFBGHuWHkb2mP3sUmtcmyyHDBrslayX7SJPOIzT/q9Lp/OrzaXeApoc6vs1yUOlsGzLHRWPm26lhMXKdrD64QI3R4cyKxkVftY=; 7:sHjEIrueM08aXQGrkZ5yIvf7xR9N89GpLqcaZLgZowuvLYnJo+snGmbM/IGhuSFQGgjXmkna9EJUzN/ZCCgF4RK4qxoMViJ4ovtYnPdFludPuRRFREBD0igokEdH2nR0bz1glEG4MojGtnL79APR2ZZMhxxl+XfsFjDX60cSZIXAI2NlS+QUaFS1ui8VXto2PJXYFS95Mbq79S5xvbSlFNVrXAgD0PU7DYyTVlFt3O44epFcwo0OVYIm+SvLE+pl
x-ms-exchange-antispam-srfa-diagnostics: SOS;
x-ms-office365-filtering-correlation-id: 70985489-b1cc-42a9-7b03-08d61731932f
x-microsoft-antispam: BCL:0; PCL:0; RULEID:(7020095)(4652040)(8989137)(4534165)(4627221)(201703031133081)(201702281549075)(8990107)(5600074)(711020)(2017052603328)(7153060)(7193020); SRVR:LEJSPR8PMB004;
x-ms-traffictypediagnostic: LEJSPR8PMB004:
x-microsoft-antispam-prvs: <LEJSPR8PMB004739E368A729B7353EC9298050@LEJSPR8PMB004.DEUPRD01.PROD.OUTLOOK.DE>
x-exchange-antispam-report-test: UriScan:(28532068793085)(21748063052155);
x-ms-exchange-senderadcheck: 1
x-exchange-antispam-report-cfa-test: BCL:0; PCL:0; RULEID:(6040522)(2401047)(8121501046)(5005006)(3002001)(93006095)(93001095)(3231311)(944501410)(52105095)(10201501046)(149027)(150027)(6041310)(20161123562045)(20161123558120)(20161123560045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123564045)(201708071742011)(7699050); SRVR:LEJSPR8PMB004; BCL:0; PCL:0; RULEID:; SRVR:LEJSPR8PMB004;
x-forefront-prvs: 07915F544A
x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(396003)(376002)(346002)(136003)(39860400002)(366004)(189003)(199004)(54094003)(86362001)(7736002)(6116002)(3846002)(316002)(305945005)(55016002)(5640700003)(6306002)(9686003)(8676002)(53936002)(14454004)(72206003)(966005)(105586002)(4326008)(478600001)(450100002)(97736004)(2900100001)(2906002)(106356001)(74482002)(75402003)(66066001)(2501003)(5250100002)(5660300001)(102836004)(26005)(33656002)(54906003)(6916009)(68736007)(8936002)(81166006)(7696005)(81156014)(52396003)(476003)(486006)(256004)(14444005)(186003)(5024004)(2351001); DIR:OUT; SFP:1101; SCL:1; SRVR:LEJSPR8PMB004; H:LEJPR01MB0377.DEUPRD01.PROD.OUTLOOK.DE; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1;
received-spf: None (protection.outlook.com: telekom.de does not designate permitted sender hosts)
x-microsoft-antispam-message-info: idCWTnYHPAU5DhWEpNEPP+cu+dr2evbHrbDEfwb735BYqIICYjkhB/yopRDlZ4IfRQNC+i80wTRTfDIj3NO1WnibV0DpZ93TpAKB5RhXzmjHG8v/t5ptRJZgLe0LMBycvC25Zpjs+6d+DVSjwQ0JAgXGydlfzZihD4vU7zadFuck6F6TPARngPyf3C98deiOUcuu8pWMW3Qz+zolqRKDFyj9Z4Na2fxVZuHClRyXTHvGd+RzlfdaGU0QomkVKDURhXTVYJ0IQ/LyYLxk2539bTQETatVVI7cMMtjmQ0lIgPemXESCkEtMvGeDKcqYh2TyG55/9C6IPvSPRz9W6G4MRkteusyylhvc3pQL7b/vuQ=
spamdiagnosticoutput: 1:99
spamdiagnosticmetadata: NSPM
Content-Type: multipart/alternative; boundary="_000_LEJPR01MB037757EA179E14B2AB3CA90098050LEJPR01MB0377DEUP_"
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-Network-Message-Id: 70985489-b1cc-42a9-7b03-08d61731932f
X-MS-Exchange-CrossTenant-originalarrivaltime: 10 Sep 2018 15:25:00.9142 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: bde4dffc-4b60-4cf6-8b04-a5eeb25f5c4f
X-MS-Exchange-Transport-CrossTenantHeadersStamped: LEJSPR8PMB004
X-OriginatorOrg: telekom.de
Archived-At: <https://mailarchive.ietf.org/arch/msg/rtg-dir/eU23ZAqqpu7S9UqC9fxntF61XVU>
Subject: [RTG-DIR] RtgDir review of draft-ietf-softwire-mesh-multicast-22.txt
X-BeenThere: rtg-dir@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Routing Area Directorate <rtg-dir.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/rtg-dir>, <mailto:rtg-dir-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/rtg-dir/>
List-Post: <mailto:rtg-dir@ietf.org>
List-Help: <mailto:rtg-dir-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/rtg-dir>, <mailto:rtg-dir-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 10 Sep 2018 15:26:15 -0000

Hello,

I have been selected as the Routing Directorate reviewer for this draft. The Routing Directorate seeks to review all routing or routing-related drafts as they pass through IETF last call and IESG review, and sometimes on special request. The purpose of the review is to provide assistance to the Routing ADs. For more information about the Routing Directorate, please see ​http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir

Although these comments are primarily for the use of the Routing ADs, it would be helpful if you could consider them along with any other IETF Last Call comments that you receive, and strive to resolve them through discussion or by updating the draft.

Document: draft-ietf-softwire-mesh-multicast-22.txt
 Reviewer: Nicolai Leymann
 Review Date: 09/06/18
 IETF LC End Date: date-if-known
 Intended Status: Standards Track

Summary:
I have some minor concerns about this document that I think should be resolved before publication.

Comments:
The draft in general is in good shape. The problem description is clear as well as the solution to the problem. Nevertheless it took almost 8 year in order to go from first draft to last call and I wonder if there are any implementations available (or if there are alternatives with a broader deployment).

Major Issues:
"No major issues found."

Minor Issues:
- The relation to RFC8114 is a bit unclear.
The draft references several times RFC8114 which describes a solution for delivering IPv4 Multicast over an IPv6 Multicast network. Draft-ietf-softwire-mesh-multicast describes also a solution for IPv4-over-IPv6 Multicast. From a functional point of view the result is the same and there are several similarities. I think the differences should be made more clear and therefore also the motivation for a solution based on draft- ietf-softwire-mesh-multicast.
- The draft also mentions MPLS as protocol for the I-IP but the solution focusses at IPv6 as I-IP. What role does MPLS play in the context of IPv6 as I-IP (if packets are MPLS encapsulated in the inner IP network)? This should also be clarified.

Nits:
Section 3:
“
   o I-IP (Internal IP): This refers to IP address family that is
   supported by the core network.  In this document, the I-IP is IPv6.

   o E-IP (External IP): This refers to the IP address family that is
   supported by the client network(s) attached to the I-IP transit core.
   In this document, the I-IP is IPv6.
“
I think the last sentence should read as “In this document, the E-IP is IPv4”.

Regards

Nic