IETF Logo Mail Archive

Re: [Idr] [bess] Type 1 RD for Pure IPv6 network -- EVPN

"Jakob Heitz (jheitz)" <jheitz@cisco.com> Fri, 29 January 2021 22:21 UTC

Return-Path: <jheitz@cisco.com>
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 B46F93A1331; Fri, 29 Jan 2021 14:21:28 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -9.59
X-Spam-Level:
X-Spam-Status: No, score=-9.59 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_H2=-0.001, SPF_PASS=-0.001, T_REMOTE_IMAGE=0.01, 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=Q1wvuUuO; dkim=pass (1024-bit key) header.d=cisco.onmicrosoft.com header.b=fZolBq42
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 SycxErdTX6JZ; Fri, 29 Jan 2021 14:21:26 -0800 (PST)
Received: from alln-iport-2.cisco.com (alln-iport-2.cisco.com [173.37.142.89]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5F7153A132F; Fri, 29 Jan 2021 14:21:26 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=19296; q=dns/txt; s=iport; t=1611958886; x=1613168486; h=from:to:cc:subject:date:message-id:references: in-reply-to:mime-version; bh=XBHgZZdLeRb5i96mlR5Ll8NdwFNno9LkXhziopAJ1v4=; b=Q1wvuUuOgbl4HaEgBZjtflZVTsCM0JgZapA/YdMw8rb9SH6zbS7ahdx8 Vf+sCGeerDI9fXS+21gW8/GLxijkzS/ISx85xbbkmu3pRxHvlqUWknglN o2cABt/abdLZDlkudjrT+gtTXOD1A2oFP1YR5N85oXa0WN/WY9cnGMAQl s=;
X-IPAS-Result: A0AYAAAEiBRgmIgNJK1fAxwBAQEBAQEHAQESAQEEBAEBgXsHAQELAYEiMFF9WjIvhECDSAOEWYkxA4odigmEc4EuFIERA1QLAQEBDQEBGAEKCgIEAQGESgIXgWECJTQJDgIDAQEBAwIDAQEBAQUBAQECAQYEFAEBAQEBAQEBhjYNhXMBAQEEAQEhChMBASwLAQ8CAQgHBwMEAQEoAwICAh8GCxQJCAIEAQ0FCBODCwGBflcDLgEOqTICiiV2gTKDBQEBBoEzAYNgDQuCEgmBIRcBgnaEBAGBC4U3JhuBQT+BEUOCKC4+ghtCAQECAYEnARIBIxUKDAkICYJSFx2CLIFZcYE5AQEFVipHEW4ZkHyBTkGHN4w+kGhZCoJ2iTKNIIVFowSGJ4wPgXKLI4J+k0ACAgICBAUCDgEBBoFWOGlwcBU7gmkJRxcCDY4hGoNXhRSFRHQCATQCBgEJAQEDCXyLGQEB
IronPort-PHdr: 9a23:IKnPdxAUFEhrBQoMXZslUyQJPHJ1sqjoPgMT9pssgq5PdaLm5Zn5IUjD/qw00A3GWIza77RPjO+F+6zjWGlV55GHvThCdZFXTBYKhI0QmBBoG8+KD0D3bZuIJyw3FchPThlpqne8N0UGF8P3ZlmUqXq3vnYeHxzlPl9zIeL4UofZk8Ww0bW0/JveKwVFjTawe/V8NhKz+A7QrcIRx4BlL/U8
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-AV: E=Sophos;i="5.79,386,1602547200"; d="scan'208,217";a="660362645"
Received: from alln-core-3.cisco.com ([173.36.13.136]) by alln-iport-2.cisco.com with ESMTP/TLS/DHE-RSA-SEED-SHA; 29 Jan 2021 22:21:25 +0000
Received: from XCH-RCD-002.cisco.com (xch-rcd-002.cisco.com [173.37.102.12]) by alln-core-3.cisco.com (8.15.2/8.15.2) with ESMTPS id 10TMLPEh029404 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL); Fri, 29 Jan 2021 22:21:25 GMT
Received: from xfe-rcd-001.cisco.com (173.37.227.249) by XCH-RCD-002.cisco.com (173.37.102.12) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 29 Jan 2021 16:21:24 -0600
Received: from xhs-rcd-003.cisco.com (173.37.227.248) by xfe-rcd-001.cisco.com (173.37.227.249) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Fri, 29 Jan 2021 16:21:25 -0600
Received: from NAM11-BN8-obe.outbound.protection.outlook.com (72.163.14.9) by xhs-rcd-003.cisco.com (173.37.227.248) with Microsoft SMTP Server (TLS) id 15.0.1497.2 via Frontend Transport; Fri, 29 Jan 2021 16:21:24 -0600
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=KOPAifEE2yJVp32oVfnHE5vGs6W0SBlQY8S0qZnRWR/oXAqyFX1I6HsOmurTpR6d6XmWJHf98YcFcbUMsmz7GzKUuPjHETpEnWJ/n2mf3fqFANOYsS4BZFYltAk6giOWDE+9jlCWOZj1cEYzR92AIzn5wEhb6GJ1JiQA6P+vG9lQ65I5FgE+VdcnTtOhoZ+H+i6etY8AMxXqF0HjdD1pgIVHiRfLdmfb5+TD/tns5l89T4iRvWy/oUw4+FAduki/6/rxz0aCFA2n12IeuMkfifmzQzUPwYVIAvBVF/uawqV0jn606e7tcjJxu8i0yJ+2lkJnmGUtT0rT5tYNidYjFw==
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=XBHgZZdLeRb5i96mlR5Ll8NdwFNno9LkXhziopAJ1v4=; b=DhoLi6TQx0nfW9ms304SOSHKf8qCBVWa/vIZO4ZRd83m9lyGgSriOUr0Ap4h69J28KJtmOrWax5ONG2VHGKFJ4SZzH2whaoNdBgPBy9EsEv5LbC0XgtRVQLVRdHKrnFbOIwinauMIMEpHJVndieNaVrK5iXh/n56d+kBrC9OcFDFpm0c+HP5T6XlIu4fE3M5k38M8ObjL0RWf5MFV6vc7I7MRuDD2q1ES9T43MyUryrXSwPV51dM13vKDAQ/FbsebU2XPoifN4CfgnF0jk+VNfxL4mRXpyA7nMQSaWqtP1JWkCggqhTdcffIJ+eP3FOsIVlEjqp5/gxUGUIQOTM20A==
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=XBHgZZdLeRb5i96mlR5Ll8NdwFNno9LkXhziopAJ1v4=; b=fZolBq428chzs6XWuI4InUSrg/FXsUafKf0kqRvBmFPbQZWx5LhhdUsK78l7KyRTlnfOK4C9zZ3qRQ2ZTw3RGT609vzhe1YCOh9nxZw1lMGtM6eiaZ4ihA0IXAX2N+XwWZdfJaqEy333xm6lHxBIlLCOiSRcfWcQj6yzrCiX+5k=
Received: from BYAPR11MB3207.namprd11.prod.outlook.com (2603:10b6:a03:7c::14) by SJ0PR11MB4926.namprd11.prod.outlook.com (2603:10b6:a03:2d7::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3805.17; Fri, 29 Jan 2021 22:21:23 +0000
Received: from BYAPR11MB3207.namprd11.prod.outlook.com ([fe80::2581:444d:50af:1701]) by BYAPR11MB3207.namprd11.prod.outlook.com ([fe80::2581:444d:50af:1701%4]) with mapi id 15.20.3805.019; Fri, 29 Jan 2021 22:21:23 +0000
From: "Jakob Heitz (jheitz)" <jheitz@cisco.com>
To: Gyan Mishra <hayabusagsm@gmail.com>, Muthu Arul Mozhi Perumal <muthu.arul@gmail.com>
CC: TULASI RAM REDDY <tulasiramireddy@gmail.com>, "bess@ietf.org" <bess@ietf.org>, "idr@ietf.org" <idr@ietf.org>
Thread-Topic: [bess] [Idr] Type 1 RD for Pure IPv6 network -- EVPN
Thread-Index: AQHW9omgNTBLDFmGBkukrdZDs1uGGao/LKZA
Date: Fri, 29 Jan 2021 22:21:20 +0000
Message-ID: <BYAPR11MB32078B6ED725CA4ACD9E1D64C0B99@BYAPR11MB3207.namprd11.prod.outlook.com>
References: <CA+JENaK55mrR0hDEbTC62kASxTLtEfbmRkWh-VUhRU3oPQcBVA@mail.gmail.com> <CAKz0y8zOjsHS-_Nm7b_AYVy93zE4aDxvKJ+iTBtMDmdP5SCCoQ@mail.gmail.com> <CABNhwV3Jy_gH351+COn-ta14T5WVb0aixb9598nHHrJceOyz_Q@mail.gmail.com>
In-Reply-To: <CABNhwV3Jy_gH351+COn-ta14T5WVb0aixb9598nHHrJceOyz_Q@mail.gmail.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
authentication-results: gmail.com; dkim=none (message not signed) header.d=none;gmail.com; dmarc=none action=none header.from=cisco.com;
x-originating-ip: [2601:647:5701:46e0:4a3:1f38:ea7d:9e8c]
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: 4a210575-f069-4d0d-9abd-08d8c4a4365b
x-ms-traffictypediagnostic: SJ0PR11MB4926:
x-microsoft-antispam-prvs: <SJ0PR11MB492633C022341E2CEC07986BC0B99@SJ0PR11MB4926.namprd11.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:9508;
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:BYAPR11MB3207.namprd11.prod.outlook.com; PTR:; CAT:NONE; SFS:(366004)(346002)(376002)(396003)(136003)(39860400002)(86362001)(54906003)(110136005)(2906002)(66476007)(52536014)(66946007)(8936002)(66446008)(76116006)(166002)(7696005)(5660300002)(64756008)(66556008)(6506007)(33656002)(4326008)(55016002)(53546011)(66574015)(186003)(316002)(9686003)(478600001)(966005)(8676002)(71200400001); DIR:OUT; SFP:1101;
x-ms-exchange-antispam-messagedata: 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
x-ms-exchange-transport-forked: True
Content-Type: multipart/alternative; boundary="_000_BYAPR11MB32078B6ED725CA4ACD9E1D64C0B99BYAPR11MB3207namp_"
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: BYAPR11MB3207.namprd11.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 4a210575-f069-4d0d-9abd-08d8c4a4365b
X-MS-Exchange-CrossTenant-originalarrivaltime: 29 Jan 2021 22:21:22.9913 (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: 0O1P7FGulDKLTDvJWzQwzOMSD/F16/3YEDCxzTjMZ+koNvgwFbqGw9EaGMPwMuir+4rU2/vzPNkaTW+w77I8Lw==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR11MB4926
X-OriginatorOrg: cisco.com
X-Outbound-SMTP-Client: 173.37.102.12, xch-rcd-002.cisco.com
X-Outbound-Node: alln-core-3.cisco.com
Archived-At: <https://mailarchive.ietf.org/arch/msg/idr/Do6ffjFze-34GwFBvB30x9hPTSY>
Subject: Re: [Idr] [bess] Type 1 RD for Pure IPv6 network -- EVPN
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: Fri, 29 Jan 2021 22:21:29 -0000

Note that the BGP identifier is not guaranteed to be unique across ASes, only within a single AS.

Regards,
Jakob.

From: BESS <bess-bounces@ietf.org> On Behalf Of Gyan Mishra
Sent: Friday, January 29, 2021 1:56 PM
To: Muthu Arul Mozhi Perumal <muthu.arul@gmail.com>
Cc: TULASI RAM REDDY <tulasiramireddy@gmail.com>; bess@ietf.org; idr@ietf.org
Subject: Re: [bess] [Idr] Type 1 RD for Pure IPv6 network -- EVPN

Muthu

How does RFa. 6286 AS wide BGP identifier change the BGP path selection process when all attributes are equal and ‘bestpath compare-routerid” is uses so the valid/best path is deterministic and oldest versus newest default.

I believe the BGP Identifier just as with OSPF or ISIS does not have to be routable, so in an IPv6 only network precluding RFC 6286 I believe could you still use a 4 octet IP address as the router-id.

This question comes up a lot these days as operations migrate to some flavor of IPv6 only core MPLS LDPv6, SR-MPLSv6, SRv6.


Thanks

Gyan
On Wed, Jan 27, 2021 at 5:45 AM Muthu Arul Mozhi Perumal <muthu.arul@gmail.com<mailto:muthu.arul@gmail.com>> wrote:
Hi Tulasi,

In pure IPv6 networks, I think using the BGP identifier in place of the IP address part in the type 1 RD should suffice for all practical purposes. The only catch is, if it is an AS-wide unique BGP identifier [RFC6286], then it is not an IP address 'per se'. But, I think it makes no difference from an interoperability standpoint..
Perhaps, in line with RFC6286, we should redefine the IP address part of the type 1 RD as just a 4-octet, unsigned, non-zero integer..
Regards,
Muthu

On Fri, Jan 22, 2021 at 11:31 AM TULASI RAM REDDY <tulasiramireddy@gmail.com<mailto:tulasiramireddy@gmail.com>> wrote:
Hi All,

In a pure IPv6 network, how do one expect to construct the Type 1 RD.
As per EVPN RFC 7432 for EAD per ES, it should be Type 1 RD, but if the loopback address is only IPv6 then what is the expectation here?
Should we use BGP router ID(32bit) here?

From RFC7432: EVPN
8.2.1<https://tools.ietf.org/html/rfc7432#section-8.2.1>.  Constructing Ethernet A-D per Ethernet Segment Route

   The Route Distinguisher (RD) MUST be a Type 1 RD [RFC4364<https://tools.ietf.org/html/rfc4364>].  The

   value field comprises an IP address of the PE (typically, the

   loopback address) followed by a number unique to the PE.

Thanks,
TULASI RAMI REDDY N
_______________________________________________
BESS mailing list
BESS@ietf.org<mailto:BESS@ietf.org>
https://www.ietf.org/mailman/listinfo/bess
_______________________________________________
Idr mailing list
Idr@ietf.org<mailto:Idr@ietf.org>
https://www.ietf.org/mailman/listinfo/idr
--

[http://ss7.vzw.com/is/image/VerizonWireless/vz-logo-email]<http://www.verizon.com/>

Gyan Mishra

Network Solutions Architect

M 301 502-1347
13101 Columbia Pike
Silver Spring, MD

v2.23.0 | Report a Bug | By Email