[Idr] Question about BGP Large Communities

"Sriram, Kotikalapudi (Fed)" <kotikalapudi.sriram@nist.gov> Tue, 04 February 2020 18:22 UTC

Return-Path: <kotikalapudi.sriram@nist.gov>
X-Original-To: idr@ietfa.amsl.com
Delivered-To: idr@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8E8921208B3; Tue, 4 Feb 2020 10:22:01 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.99
X-Spam-Level:
X-Spam-Status: No, score=-1.99 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, T_KAM_HTML_FONT_INVALID=0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=nist.gov
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 BCMiVZJypek2; Tue, 4 Feb 2020 10:21:59 -0800 (PST)
Received: from GCC02-BL0-obe.outbound.protection.outlook.com (mail-bl2gcc02on2127.outbound.protection.outlook.com [40.107.89.127]) (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 4746C12087D; Tue, 4 Feb 2020 10:21:59 -0800 (PST)
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ZYAmcYhOWQObuAvx1r0TWA3tO2ofIZQaOHw/LppviFz9lv1uO6Tz9C6BT8EHjs2O8+GKw76Ev3e/L3mbUNZiYIvYdg1Dz4V+HNcywE99XroerbdBI+xSPaTrCJUel99TCnRwnJislkKTAoWhq6mQlLmtfYPmhneWd273O5X139AGvXvpo9d4ufYOYeuHBk0lM2cSljrIQSv4L7a/xrkYXgQnOljmY8c0C+KBIrBCwyAJPYvAB0ZR7xzstFkMlH3hYEFvMrmsXStla2jw2bqbUhVVuUID3jHpMuPGZ13ezKGhup9BJT+1PRgXZ34/nfCatibPXrShoJyjpC8ngh6F5A==
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=0ULjIXoT8Z1NI02e1PW93cCQNdzFMSbRhEpaHE4Gqv8=; b=FYoxFOLkM84+OBW9aCKWnE4Oz6WaYIepXhL6VuG+cDhU2A5tNtJbTH8i6dgRZ/sZLjsKI5sO/AUK743P7G8KaNsdpkHbPb7r1WmQt+A/UqLAGPeAZTa8/tXFIqxa8AElEXQY+dmt9zNZqtaI6gGg8C4+EWpa8fhdJDHIe4UN0mL2cnZN6jj1zwanTp40GTYoRRuP9d4pHH0Xe1z8kZe1/Dl3NqWaCqttZqqAMAtoFNBVqaDvD4IVBPmPQwxaGRcRr9ecS+ofBPaVVOrTlOH8g+DnzV0wZHpIH0embjke0fQeCa1q7YxP48ZgjJikrffysId8F7HZnvK87Sje8KmA1g==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nist.gov; dmarc=pass action=none header.from=nist.gov; dkim=pass header.d=nist.gov; arc=none
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nist.gov; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=0ULjIXoT8Z1NI02e1PW93cCQNdzFMSbRhEpaHE4Gqv8=; b=zi7iYtcK0O5CvveY8v4ABxJRFN/hGJGZ0X+chzOUrkWTaZ9uaHfCsMfX7jrZ8dw7WHlpa/68/IULUg6J3XeyABTuK9Cdz7SRVaSUGTiU6mfGD5BHHgl/grDPGayVkxB88uUO0E5PEfLgiKCkNeMPiVRlyi2pwnE7DF6bAtwz4/w=
Received: from DM6PR09MB5448.namprd09.prod.outlook.com (20.180.61.9) by DM6PR09MB5749.namprd09.prod.outlook.com (20.180.62.88) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2686.26; Tue, 4 Feb 2020 18:21:57 +0000
Received: from DM6PR09MB5448.namprd09.prod.outlook.com ([fe80::6430:ee45:4fc4:f468]) by DM6PR09MB5448.namprd09.prod.outlook.com ([fe80::6430:ee45:4fc4:f468%6]) with mapi id 15.20.2707.020; Tue, 4 Feb 2020 18:21:57 +0000
From: "Sriram, Kotikalapudi (Fed)" <kotikalapudi.sriram@nist.gov>
To: "Jakob Heitz (jheitz)" <jheitz@cisco.com>, Job Snijders <job@ntt.net>, Nick Hilliard <nick@foobar.org>, John Heasly <heas@shrubbery.net>
CC: "idr@ietf.org" <idr@ietf.org>, "grow@ietf.org" <grow@ietf.org>, "idr-chairs@ietf.org" <idr-chairs@ietf.org>, "grow-chairs@ietf.org" <grow-chairs@ietf.org>, "a.e.azimov@gmail.com" <a.e.azimov@gmail.com>, Brian Dickson <brian.peter.dickson@gmail.com>
Thread-Topic: Question about BGP Large Communities
Thread-Index: AdXbeNI4t0SppYFnSky8PqLGmuct1g==
Date: Tue, 4 Feb 2020 18:21:57 +0000
Message-ID: <DM6PR09MB54489301E52DD711E031400984030@DM6PR09MB5448.namprd09.prod.outlook.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
authentication-results: spf=none (sender IP is ) smtp.mailfrom=kotikalapudi.sriram@nist.gov;
x-originating-ip: [129.6.140.161]
x-ms-publictraffictype: Email
x-ms-office365-filtering-ht: Tenant
x-ms-office365-filtering-correlation-id: f2fc4d4d-c0ea-4dba-2594-08d7a99f1ea3
x-ms-traffictypediagnostic: DM6PR09MB5749:
x-microsoft-antispam-prvs: <DM6PR09MB57491412BA0F60C15EA3DFB684030@DM6PR09MB5749.namprd09.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:9508;
x-forefront-prvs: 03030B9493
x-forefront-antispam-report: SFV:NSPM; SFS:(10019020)(39860400002)(396003)(366004)(346002)(136003)(376002)(199004)(189003)(7416002)(966005)(33656002)(2906002)(8936002)(86362001)(55016002)(316002)(7696005)(478600001)(4326008)(66556008)(66476007)(9686003)(66946007)(76116006)(52536014)(5660300002)(81156014)(110136005)(186003)(71200400001)(8676002)(81166006)(26005)(54906003)(6506007)(66446008)(64756008); DIR:OUT; SFP:1102; SCL:1; SRVR:DM6PR09MB5749; H:DM6PR09MB5448.namprd09.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1;
received-spf: None (protection.outlook.com: nist.gov does not designate permitted sender hosts)
x-ms-exchange-senderadcheck: 1
x-microsoft-antispam: BCL:0;
x-microsoft-antispam-message-info: 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
x-ms-exchange-antispam-messagedata: Sf9jqwTi5oRelSRe0GVSjvgb/BIaYoGmjRD/mQbCB9uPziIwJ1R5FbrxQ99cqinSU5HF0XnppBYAX6UL3WN0otFW+Cg52eIzkMN67K/2Ac0rTn0hH1wctrEGWcq7nqD90pkFxxFNPfip5YOdQaj09A==
x-ms-exchange-transport-forked: True
Content-Type: multipart/alternative; boundary="_000_DM6PR09MB54489301E52DD711E031400984030DM6PR09MB5448namp_"
MIME-Version: 1.0
X-OriginatorOrg: nist.gov
X-MS-Exchange-CrossTenant-Network-Message-Id: f2fc4d4d-c0ea-4dba-2594-08d7a99f1ea3
X-MS-Exchange-CrossTenant-originalarrivaltime: 04 Feb 2020 18:21:57.3962 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 2ab5d82f-d8fa-4797-a93e-054655c61dec
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: nzvI9vlPMmzOf5NDMIG0HNXyQtLAeIZiUQklHHUObBm0zkyXdJk50I7VAXelJlTcFbFLDPQXewa5TfDe2Voqfw==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR09MB5749
Archived-At: <https://mailarchive.ietf.org/arch/msg/idr/HbZZ4wwxmEZBgS-N7u6qjmUtNUo>
X-Mailman-Approved-At: Tue, 04 Feb 2020 10:44:13 -0800
Subject: [Idr] Question about BGP Large Communities
X-BeenThere: idr@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Inter-Domain Routing <idr.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/idr>, <mailto:idr-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/idr/>
List-Post: <mailto:idr@ietf.org>
List-Help: <mailto:idr-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/idr>, <mailto:idr-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 04 Feb 2020 18:22:03 -0000

In the route leaks solution draft,

https://tools.ietf.org/html/draft-ietf-grow-route-leak-detection-mitigation-02

we (the authors) have proposed using BGP Large Community.

We specify this to be a "well-known transitive Large Community".



Question:

Can the draft simply make an IANA request for

a Global Administrator ASN value for Route Leaks Protection (RLP) type

and request that it be published in IANA registry

as a "well-known Transitive Large Community"?



There is no IANA registry for Large Communities yet;

we have requested IDR and GROW Chairs to facilitate that.



----------------

Details/background:



We've read the following RFCs related to Large Communities:

https://tools.ietf.org/html/rfc8092

https://tools.ietf.org/html/rfc8195



RFC 8195 has this table:

                 +-------------------------------+-------------------------+

                 |       RFC8092                    | RFC 8195                |

                 +-------------------------------+--------------------------+

                 | Global Administrator    |      ASN                     |

                 |  Local Data Part 1           |    Function              |

                 |  Local Data Part 2           |   Parameter            |

                 +--------------------------------+-------------------------+

which is instructive. In the examples that RFC 8195 offers,

it appears it is *assumed* that the Large Communities are transitive.



For comparison, in Extended Communities (RFC 7153), there are

explicit Type values assigned for Transitive, Non-transitive, etc.

https://www.iana.org/assignments/bgp-extended-communities/bgp-extended-communities.xhtml

However, there is no such explicit Type specification

for Large Communities (in RFC 8092 or elsewhere).



Thank you.

Sriram