Re: [Lsr] WG Adoption Poll for “Using IS-IS Multi-Topology (MT) for Segment Routing based Virtual Transport Network” - draft-xie-lsr-isis-sr-vtn-mt-03

"Les Ginsberg (ginsberg)" <ginsberg@cisco.com> Thu, 04 March 2021 03:52 UTC

Return-Path: <ginsberg@cisco.com>
X-Original-To: lsr@ietfa.amsl.com
Delivered-To: lsr@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BE1903A0E7C for <lsr@ietfa.amsl.com>; Wed, 3 Mar 2021 19:52:11 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -9.619
X-Spam-Level:
X-Spam-Status: No, score=-9.619 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=0.001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com header.b=kGbVVEQ/; dkim=pass (1024-bit key) header.d=cisco.onmicrosoft.com header.b=T17lOYAG
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 aSrfjHVOgU_2 for <lsr@ietfa.amsl.com>; Wed, 3 Mar 2021 19:52:09 -0800 (PST)
Received: from rcdn-iport-1.cisco.com (rcdn-iport-1.cisco.com [173.37.86.72]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A09953A0E7B for <lsr@ietf.org>; Wed, 3 Mar 2021 19:52:09 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=17116; q=dns/txt; s=iport; t=1614829929; x=1616039529; h=from:to:subject:date:message-id:references:in-reply-to: mime-version; bh=A9QAe7tv5P5w+AuMUvf8zhl8nvfFRq8YeTOtabmV9cs=; b=kGbVVEQ/deWVsCNIPdkYePv9Mh0DM/fHhzPgrqJXDWAiaGQIw5VBiUpd 4QYX49/qfkj3U4Vzev76vuS8tOKP4VdC0oaJqZiNdE5B9mrO+hMXB0wU1 8pC7u7gwFspQaXbaYg0qIPEYxlSf1sfn0nQMoe1HZe4t59KWTdPoWYu32 s=;
IronPort-PHdr: =?us-ascii?q?9a23=3Alh0LNh215kWh4F0zsmDT+zVfbzU7u7jyIg8e44?= =?us-ascii?q?YmjLQLaKm44pD+JxWFuadhiVbTVsPa5u5Kze3MvPOoVW8B5MOHt3YPONxJWg?= =?us-ascii?q?QegMob1wonHIaeCEL9IfKrCk5yHMlLWFJ/uX3uN09TFZXyYlTIqTuz4CIcXB?= =?us-ascii?q?LlOlk9KuH8AIWHicOx2qi78IHSZAMdgj27bPtyIRy6oB+XuNMRhN5pK706zV?= =?us-ascii?q?3CpX4bdg=3D=3D?=
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0D0BQDyV0Bg/4wNJK1iHAEBAQEBAQc?= =?us-ascii?q?BARIBAQQEAQGCD4EjMFEHdlo2MYRBg0gDhTmIVQOULoRzgUKBEQNUCwEBAQ0?= =?us-ascii?q?BASwGAgQBAYRNAheBYwIlOBMCAwEBCwEBBQEBAQIBBgRxhWENhkQBAQEEIwo?= =?us-ascii?q?TAQE4DwIBCBEEAQEeBgcCAgIwGgMIAgQBEgiCaYF+VwMvAQ6jXQKKJXaBMoM?= =?us-ascii?q?EAQEGgTcDAYNpGIISAwaBOIJ2hAYBAYI1hBAmHIFJQoEQAUOCVz6CXASBRBw?= =?us-ascii?q?VDweCaTSCK4I4dgRTUDWBb5NXh0eeIAqCfJxCgzeKT5VQhQSBM44eoh0CAgI?= =?us-ascii?q?CBAUCDgEBBoFrI4FXcBU7gmlQFwINjh8RERSDOYUUhUVzAjYCBgEJAQEDCQF?= =?us-ascii?q?7ixcBAQ?=
X-IronPort-AV: E=Sophos;i="5.81,221,1610409600"; d="scan'208,217";a="859425857"
Received: from alln-core-7.cisco.com ([173.36.13.140]) by rcdn-iport-1.cisco.com with ESMTP/TLS/DHE-RSA-SEED-SHA; 04 Mar 2021 03:52:08 +0000
Received: from mail.cisco.com (xbe-aln-003.cisco.com [173.36.7.18]) by alln-core-7.cisco.com (8.15.2/8.15.2) with ESMTPS id 1243q8Nt006538 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=OK); Thu, 4 Mar 2021 03:52:08 GMT
Received: from xhs-rtp-002.cisco.com (64.101.210.229) by xbe-aln-003.cisco.com (173.36.7.18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Wed, 3 Mar 2021 21:52:07 -0600
Received: from xfe-aln-002.cisco.com (173.37.135.122) by xhs-rtp-002.cisco.com (64.101.210.229) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 3 Mar 2021 22:52:06 -0500
Received: from NAM11-CO1-obe.outbound.protection.outlook.com (173.37.151.57) by xfe-aln-002.cisco.com (173.37.135.122) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3 via Frontend Transport; Wed, 3 Mar 2021 21:52:06 -0600
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=dj2i5+xoaeAGQp+jTZctxOAPjEPdvTGKLByydUsjvz63OqCL2dnfKiQQql0/oC6zHmtxFiRw6DcT/2gqbuvJ1XumoSrAvU84E3w3EIGx7jMSS+xA0VLjR3+b5vEe95Q2YehxmIZwauAXEcVQbxNegaHyg8be4L3rGi42pNxKjkxVjBpAdAg5hBnvlTX8276GDbaJCVvYOXgoCrMzDEhZkUv3ilOUmK4g5Q1FF/5fZnGENyTOyzQgXQxVQGaU/E3zaq6G3a62ZGGOD0mFiDLX6JSwrNxx5NU1ViCIjtV2jYsAL4BQBzTGdE/gGl287CcsXibqzDlC3BWS8VOlpO4rdg==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=A9QAe7tv5P5w+AuMUvf8zhl8nvfFRq8YeTOtabmV9cs=; b=R1YkpdhXTrc23y8t4P6ZxHhCFY+nBv/6JdMbxhCe+PLsgdcH8VXkUyrUidshvfOLSTF2rzSpkME7rY3jfFntdYXBV+wvBgDWQ5nSLlmINfbdMVNQZ1wu1ZUPziFQCfMMha3mSnqwWdxraHzsbvU1bGJlO0hQcgljtfeqods1Cac+YjkJXKRSlq+qPFxbFpfq/XVQekv6/nWCiDHW5lO6yW7vxiBm9mWlcbwEA0V/9nmq34p76epXm2V2TqmVvxOIQDKLfOZAjTugZ8vI8jGbx6ozOmqTcjV7x0rTR6MdoTlmNEUVZvWM7uI/89cnutDTvPbZ76djM69UEPCmpTMABQ==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=cisco.com; dmarc=pass action=none header.from=cisco.com; dkim=pass header.d=cisco.com; arc=none
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cisco.onmicrosoft.com; s=selector2-cisco-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=A9QAe7tv5P5w+AuMUvf8zhl8nvfFRq8YeTOtabmV9cs=; b=T17lOYAGaHsQ7yfqXmip59tSVJxFuD00L90LS+Vm8xtdZyk/RPLwydyyXWouo4XWQGCvWZ+LGbus6k6hSALCaE5cPkLrV3Fn6Rq7YwvgAQ6aohSSxQjG1P+F72MHyraPNbTBifbAvA59qEu+PixQQ8b3Iidvh+Hglw3Sbqga0dY=
Received: from BY5PR11MB4337.namprd11.prod.outlook.com (2603:10b6:a03:1c1::14) by BYAPR11MB2616.namprd11.prod.outlook.com (2603:10b6:a02:c6::25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3890.23; Thu, 4 Mar 2021 03:52:04 +0000
Received: from BY5PR11MB4337.namprd11.prod.outlook.com ([fe80::19ab:fe94:ddeb:1ccf]) by BY5PR11MB4337.namprd11.prod.outlook.com ([fe80::19ab:fe94:ddeb:1ccf%6]) with mapi id 15.20.3890.030; Thu, 4 Mar 2021 03:52:04 +0000
From: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
To: "Acee Lindem (acee)" <acee=40cisco.com@dmarc.ietf.org>, "lsr@ietf.org" <lsr@ietf.org>
Thread-Topic: =?utf-8?B?V0cgQWRvcHRpb24gUG9sbCBmb3Ig4oCcVXNpbmcgSVMtSVMgTXVsdGktVG9w?= =?utf-8?B?b2xvZ3kgKE1UKSBmb3IgU2VnbWVudCBSb3V0aW5nIGJhc2VkIFZpcnR1YWwg?= =?utf-8?B?VHJhbnNwb3J0IE5ldHdvcmvigJ0gLSBkcmFmdC14aWUtbHNyLWlzaXMtc3It?= =?utf-8?Q?vtn-mt-03?=
Thread-Index: AQHXD7ulQBxlBtLDvEWWPb5pr3NBAKpzKTuA
Date: Thu, 4 Mar 2021 03:52:03 +0000
Message-ID: <BY5PR11MB433727F6D0A365B26896625DC1979@BY5PR11MB4337.namprd11.prod.outlook.com>
References: <6413094C-F1D8-4DBF-B365-E943473FDDE4@cisco.com>
In-Reply-To: <6413094C-F1D8-4DBF-B365-E943473FDDE4@cisco.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
authentication-results: dmarc.ietf.org; dkim=none (message not signed) header.d=none;dmarc.ietf.org; dmarc=none action=none header.from=cisco.com;
x-originating-ip: [2602:306:36ca:6640:4107:c8b9:e1e5:6e56]
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: dde1028b-3b34-4773-ba9c-08d8dec0dfde
x-ms-traffictypediagnostic: BYAPR11MB2616:
x-microsoft-antispam-prvs: <BYAPR11MB2616D2ADF9C97BE2CAB6BEA7C1979@BYAPR11MB2616.namprd11.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:10000;
x-ms-exchange-senderadcheck: 1
x-microsoft-antispam: BCL:0;
x-microsoft-antispam-message-info: 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
x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:BY5PR11MB4337.namprd11.prod.outlook.com; PTR:; CAT:NONE; SFS:(136003)(346002)(39860400002)(396003)(366004)(376002)(478600001)(86362001)(53546011)(6506007)(110136005)(66946007)(76116006)(7696005)(5660300002)(71200400001)(64756008)(66476007)(966005)(66556008)(2906002)(9686003)(316002)(52536014)(8936002)(66446008)(186003)(33656002)(166002)(55016002); DIR:OUT; SFP:1101;
x-ms-exchange-antispam-messagedata: =?utf-8?B?ampKc3RBYlBubXNCd1UwT3hQVzRzeHJRMUM5aUxwVVQxSFRLRU93SFp1czVp?= =?utf-8?B?REFzRlFtdG1uZlplVVZuUThzZ1hnWXFRdFlTd01FemtKemZ6MElETThuN1Va?= =?utf-8?B?NTFNNGRjcTlJOXA2SXFhM3ZLUXFNc0RpVmJMclJsNkFwREsvOWdHZDA5RHJ1?= =?utf-8?B?TkhJRldHZC9saUhRamgvdnJ6OVE3Y1kxcEU5Q2h0M2xHZjBlL3VNTUEvcVJz?= =?utf-8?B?b1dRb21INjViZis5ckNiK1N5S05MMlpVUUhMcGhod2VFMUtQdDV4OTgyVm0x?= =?utf-8?B?RjFPQ0tjMDVBdTFlNkFMVTIyUTVJc2FYTEx5SDNnVGlwYkcwNytLS1ppK0Vu?= =?utf-8?B?OE5ZOW91SHFWcVptVzE5MENuYkhzdU83V3hxSGZVSlhOZFVBT2JnNm12dTlE?= =?utf-8?B?N0hoR0luZnpjbmhKMGpIYTdEQlVxbEQ1STgydnZXL1lGSXJoY0ZsUmNqNCt4?= =?utf-8?B?Y0RHY3Z3SzYvRkcvejNYYlpnaUJnMXkzazB5dVdOdTFqRjRtMHRBSWlSRHBl?= =?utf-8?B?VTNXWEFMT2dsYWZoWGx2ZXdtSm1oTzJhdFZyMW5Ma2JRdUxOTFdUU0dsU0pu?= =?utf-8?B?K1RDNTMxVk5HYWxpS0RWMVZWYXdSOEIxRlZiWndTNmd6L0RxdjFiQWNHdXpX?= =?utf-8?B?M21SNGJ2c0JyckZVTU5tZUlSamJwRmxESTI3c1Jic21XV0tJVWVwelgzTjl5?= =?utf-8?B?WmtUaCtoYythUzNRL1JlUWh0bEFyU1NzU2tMZVpGZ0lLRFh0SDUyMXhYcXZB?= =?utf-8?B?NmNDeWYyaVZmVUp3SEYrMTBLV1FUQzRYTnRLakloRmRsYVdhL2wvMVNDZzNu?= =?utf-8?B?RjlqOEVMUFN3aEVJZVZVL2M3TGpEa2doeGx2cERzMG1GTFNqdFZiY2Jneks3?= =?utf-8?B?QUdKTEpiVjBPbkhqY2p6OUtnZFBRY1BBSVNCbDhac3hLWnd0SFZ0emxRMGVQ?= =?utf-8?B?ZDRmN0hacDd5UmVwbHEzY3RKNmVCMHVTc2cveWpmUW9GVktEbjJlYkZFd1Zs?= =?utf-8?B?bExOR1JxNlFTQkdUc1gvVkRSV2JmeFlxNFJDZkhsTFpuS0FBUklQZ3M3NU5a?= =?utf-8?B?OGNzYlJRRXM1dm9xWFdNQVE0bCsyeG1nYnBYWlVzMzE1VXZucy9LYjhEb0FF?= =?utf-8?B?VW1ySkhMWWV5UGpvUjJrcVVWRXcxK1ZKajkyNG9vYzBoQjFMSlc2QW1yMHFx?= =?utf-8?B?bWUwdWVGaXVHRnZxSGppejdjdFRmOWkvTFhZaFBVampqeGZIQy9LZWEvZkIz?= =?utf-8?B?RGZaamg0R2h1M05vOGg1SEFZUDZZbkEwRnJQOW5mTElHZzJOZEMwZHVGUmVy?= =?utf-8?B?UHV0Q1U1bUc3OWNQeE1kQXNXVE9Nb3ZVaDJKR1RMSGN6a0lwcWNSYU54cHlt?= =?utf-8?B?QnRDUy9hQTlsbVZDeU9SV0o0R29BKzRLUmpDaktMYnE0VDEyZWFrZkc1WXdy?= =?utf-8?B?SkNBTHdTLzhWUHRUZVY4Vk1tckN5OVVnUVdUSnRyK2lWejdSUmdWVlU0SHZC?= =?utf-8?B?ci9uSi9odFpYbHZjSmw5eEE3QzZ5OGttWGVERjRPU3RMSXBiT2hWVFYzclAr?= =?utf-8?B?WENuSEphWFFVcVg2NDZYWkVoRmlKbnNMZkVGZmpnZzRjQzIyb0tEcjUrVXdx?= =?utf-8?B?S2dncjZ2S0tmdFdISHFkNzZiSGU3Ny9qTnlnYUFXYUEvTUpoUDB0V0tUaFYy?= =?utf-8?B?aHROOFFSUVo4eVdEOTVSRkM2bG90enJQeFdiejh5RWoxWGZEeWhGTDRDU3BN?= =?utf-8?B?Ui9QalMrSWwvMUgvbEt2OXdUdy8vZDVQUzArVG1kdUljUFFrVTc3b2NoRE1l?= =?utf-8?B?V2xML05wNzNUNVgwZlI3UUg5SmVjTXlmcnFaU3p4Y0FuNW9XZkx1blI5S2VX?= =?utf-8?Q?7Mti3mlnVUTxu?=
x-ms-exchange-transport-forked: True
Content-Type: multipart/alternative; boundary="_000_BY5PR11MB433727F6D0A365B26896625DC1979BY5PR11MB4337namp_"
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: BY5PR11MB4337.namprd11.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: dde1028b-3b34-4773-ba9c-08d8dec0dfde
X-MS-Exchange-CrossTenant-originalarrivaltime: 04 Mar 2021 03:52:04.2918 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: V/m2Lx2Ol7qQTKjV/ZNh+LK/2fqxaEsEYpKL5PmwVtL8SaewkWdFj8mUPjuhFrHfkTcZZsFrxSIA7I0CuatcxA==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR11MB2616
X-OriginatorOrg: cisco.com
X-Outbound-SMTP-Client: 173.36.7.18, xbe-aln-003.cisco.com
X-Outbound-Node: alln-core-7.cisco.com
Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/dOK2RU44Jx-hVj6H37bwhBT5gn0>
Subject: Re: [Lsr] =?utf-8?q?WG_Adoption_Poll_for_=E2=80=9CUsing_IS-IS_Multi-?= =?utf-8?q?Topology_=28MT=29_for_Segment_Routing_based_Virtual_Transport_N?= =?utf-8?q?etwork=E2=80=9D_-_draft-xie-lsr-isis-sr-vtn-mt-03?=
X-BeenThere: lsr@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Link State Routing Working Group <lsr.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/lsr>, <mailto:lsr-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/lsr/>
List-Post: <mailto:lsr@ietf.org>
List-Help: <mailto:lsr-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/lsr>, <mailto:lsr-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 04 Mar 2021 03:52:12 -0000

I oppose WG adoption for this draft.

I note that the authors – following significant comments received on V0 - have removed much of the material that was considered confusing and/or inappropriate – notably discussion of L2 bundle link members.
I also note the draft has moved from Standards track to Informational track.

Let’s consider what content remains (ignoring boilerplate sections):

Section 2 notes that MT TLVs (RFC 5120) can support:
   o Topology specific SR-MPLS SIDs (defined in RFC 8667)
   o Topology specific SRv6 Locators and SIDs (defined in draft-ietf-lsr-isis-srv6-extensions)

Section 3 notes that MT TLVs can also support link attribute advertisements (defined in RFC 5305 and RFC 8570)

Also note that the IANA registries:

https://www.iana.org/assignments/isis-tlv-codepoints/isis-tlv-codepoints.xhtml#isis-tlv-codepoints-22-23-25-141-222-223 and
https://www.iana.org/assignments/isis-tlv-codepoints/isis-tlv-codepoints.xhtml#isis-tlv-codepoints-135-235-236-237

also clearly document what is discussed in Sections 2 and 3.

Section 4 notes that topology specific forwarding entries can be installed in the forwarding plane based on topology specific routing calculations – something which was discussed in RFC 5120.

Section 5 notes that two different MTIDs could operate on the same physical topology - something clearly discussed in RFC 5120.

All of this adds nothing new to our understanding of the protocol. The only “new” content is the statement that VTNs could map to MTIDs.
But the substance of VTN and how it might be used is better discussed in a number of other drafts including:

   draft-ietf-spring-sr-for-enhanced-vpn
   draft-ietf-teas-enhanced-vpn
   draft-dong-lsr-sr-enhanced-vpn

The last draft is most notable because it proposes new IGP protocol encodings in support of VTN. Whether the encodings in that draft are accepted as currently defined or evolve to something different – it would be the authoritative draft on VTN IGP extensions.

The end result is that there is no meaningful content in draft-xie-lsr-isis-sr-vtn-mt. What it states is either already stated in existing RFCs or will be stated authoritatively in whatever draft-dong-lsr-sr-enhanced-vpn  evolves to (if indeed this work on VTNs is adopted by the WG).

Let’s please not waste WG time on this draft.

   Les


From: Lsr <lsr-bounces@ietf.org> On Behalf Of Acee Lindem (acee)
Sent: Tuesday, March 02, 2021 3:28 PM
To: lsr@ietf.org
Subject: [Lsr] WG Adoption Poll for “Using IS-IS Multi-Topology (MT) for Segment Routing based Virtual Transport Network” - draft-xie-lsr-isis-sr-vtn-mt-03

This information draft describes how MT could be used for VTN segmentation. The authors have asked for WG adoption.

This begins a three week LSR Working Group Adoption Poll for “Using IS-IS Multi-Topology (MT) for Segment Routing based Virtual Transport Network” - draft-xie-lsr-isis-sr-vtn-mt-03. I’m giving it three weeks due to the IETF next week. Please register your support or objection on this list prior to the end of the adoption poll on 3/24/2020.

Thanks,
Acee