Re: [Idr] WG adoption call for draft-merciaz-idr-bgp-bfd-strict-mode-02.txt (9/2 to 9/17/2019)

"Acee Lindem (acee)" <acee@cisco.com> Thu, 12 September 2019 13:57 UTC

Return-Path: <acee@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 1FB8F12008B for <idr@ietfa.amsl.com>; Thu, 12 Sep 2019 06:57:13 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -14.5
X-Spam-Level:
X-Spam-Status: No, score=-14.5 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, 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=MQUG3Wz4; dkim=pass (1024-bit key) header.d=cisco.onmicrosoft.com header.b=CKKhqwq5
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 IdFJdvjxcvpB for <idr@ietfa.amsl.com>; Thu, 12 Sep 2019 06:57:09 -0700 (PDT)
Received: from alln-iport-3.cisco.com (alln-iport-3.cisco.com [173.37.142.90]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9AD12120041 for <idr@ietf.org>; Thu, 12 Sep 2019 06:57:09 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2042; q=dns/txt; s=iport; t=1568296629; x=1569506229; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=LPKUqX5RFreHzQyKp9kY4GTYL0qVcf2YqKWcHDiSQdk=; b=MQUG3Wz4HjPYv7mp7G7IwM7OZmg/PkNN9WEAGILPKi/4rN3JNJ/aIwBa ySMulcvO5ivPU3wNciOJR666hujTX2rVjtEuCwi3dyChElptrj0MCpgK7 DcWqgdlUnXw4xX4NmZyCJ83VtGmjaQL5IrU6wVeJauBWii1vCg2vnh0mb M=;
IronPort-PHdr: =?us-ascii?q?9a23=3AnS7XBReIKjEK9TEO/0J9q8SwlGMj4e+mNxMJ6p?= =?us-ascii?q?chl7NFe7ii+JKnJkHE+PFxlwKUD57D5adCjOzb++D7VGoM7IzJkUhKcYcEFl?= =?us-ascii?q?cejNkO2QkpAcqLE0r+effhYiESF8VZX1gj9Ha+YgBY?=
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0AUAACATnpd/49dJa1mGgEBAQEBAgE?= =?us-ascii?q?BAQEHAgEBAQGBVQMBAQEBCwGBRFADbVYgBAsqhCGDRwOKaII3JZdwgS6BJAN?= =?us-ascii?q?UCQEBAQwBARgLCgIBAYQ/AheCRiM2Bw4CAwEDAgMBAQQBAQECAQYEbYUuDIV?= =?us-ascii?q?KAQEBAQIBAQEQCwYRDAEBLAsBDwIBCA4KAgImAgICJQsVEAIEAQ0FIoMAAYF?= =?us-ascii?q?qAw4PAQIMn0MCgTiIYXOBMoJ9AQEFhQUYghYDBoEMKAGLdxiBf4ERJwwTgkw?= =?us-ascii?q?+gQSBXQEBhGwygiaPQJ0LCoIhlHcbmQqNf5huAgQCBAUCDgEBBYFZBC2BWHA?= =?us-ascii?q?VOyoBgkFQEBSBThgggzqFFIU/c4Epjn8BAQ?=
X-IronPort-AV: E=Sophos;i="5.64,497,1559520000"; d="scan'208";a="336193123"
Received: from rcdn-core-7.cisco.com ([173.37.93.143]) by alln-iport-3.cisco.com with ESMTP/TLS/DHE-RSA-SEED-SHA; 12 Sep 2019 13:57:08 +0000
Received: from XCH-RCD-017.cisco.com (xch-rcd-017.cisco.com [173.37.102.27]) by rcdn-core-7.cisco.com (8.15.2/8.15.2) with ESMTPS id x8CDv8g9008179 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL); Thu, 12 Sep 2019 13:57:08 GMT
Received: from xhs-aln-002.cisco.com (173.37.135.119) by XCH-RCD-017.cisco.com (173.37.102.27) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Thu, 12 Sep 2019 08:57:07 -0500
Received: from xhs-rcd-002.cisco.com (173.37.227.247) by xhs-aln-002.cisco.com (173.37.135.119) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Thu, 12 Sep 2019 08:57:07 -0500
Received: from NAM02-BL2-obe.outbound.protection.outlook.com (72.163.14.9) by xhs-rcd-002.cisco.com (173.37.227.247) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Thu, 12 Sep 2019 08:57:07 -0500
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=NrxZhJLlTqPzQQbioC1CrE0IRSRspDmGrMEbrh3vB9wJriVe1J6HM+/RO9q9WBYYStKsrPQ5SEzCk0cQyxUl6lV3TOC0QXYSWeQr4V3UJ+9U4F8fYq/5WzXqxKAIDZoR0IO7ZgfJ3RYKonLE8bNZeEku7ucQtBXdCsBbhUHoaP1TtOXBs7tHYgwNlYvPxUnMs85Q2E4Oh2pQ1TaLEyUupTK+HbxjegnZKpfhN/czzB6eFURHm973JiV8YdTEHypNWia7RoKgw0W89Lal8z6BDc+faF0pt541Qyg7wvgYwSI7F8pzXH+oJhg1t5x5YNmCOWjdRc8uok7bDd/7ajWUOQ==
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=LPKUqX5RFreHzQyKp9kY4GTYL0qVcf2YqKWcHDiSQdk=; b=O+CDR18b8HIS36nN5qtc/XD7MR7/Rn6d/ZvOIYcR4xVEnTQ2RYimFDX+q7PujccHDv6Hg5asnYFIXZAqsOE3CRvorGMuwyCAxC8oAlpf+jG9FxvHTkzCAdWQcyUJvPaHRjMQKdIBULnLnuxQD2fijxFJG6ITpPyLj5tIUPBzTCojjtje8ODjcmNPJ5hBKPD1vt6/UfeAffvTpvzbpKG4pM0tRHVmPsLg6iJDkpmYWJs/ixOBiZ9HJvVgHBHcHOGb+6PJ5ViOJd3U58YyMEDWZ8QwfsufKLodO7EKoq4+fKr0thIG2ZVHZ5ZKRPCu72NctCwzBwZHXDfpqZbdakhhRQ==
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=LPKUqX5RFreHzQyKp9kY4GTYL0qVcf2YqKWcHDiSQdk=; b=CKKhqwq5uw92SoK+huM/2FnTSVzQO0z1lkyGoguGWMKm5SC6fIENc5PIaRV6s+TZ6I3sA1uXaWZo0StGo+Pphg+B7uZt9C04ctCCTnqAacssosmU5zwFCgRZGjU1hQmld7Bw4jNmBksEYbAgtW1j55LjZHlfgLP2k0o5qIddVDM=
Received: from MN2PR11MB4221.namprd11.prod.outlook.com (52.135.38.14) by MN2PR11MB4030.namprd11.prod.outlook.com (10.255.181.224) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2263.17; Thu, 12 Sep 2019 13:57:06 +0000
Received: from MN2PR11MB4221.namprd11.prod.outlook.com ([fe80::cdc1:a2cf:eb3:a420]) by MN2PR11MB4221.namprd11.prod.outlook.com ([fe80::cdc1:a2cf:eb3:a420%6]) with mapi id 15.20.2263.016; Thu, 12 Sep 2019 13:57:06 +0000
From: "Acee Lindem (acee)" <acee@cisco.com>
To: Jeffrey Haas <jhaas@pfrc.org>, Robert Raszuk <robert@raszuk.net>
CC: "Mercia Zheng (merciaz)" <merciaz@cisco.com>, "idr@ietf.org" <idr@ietf.org>, Susan Hares <shares@ndzh.com>
Thread-Topic: [Idr] WG adoption call for draft-merciaz-idr-bgp-bfd-strict-mode-02.txt (9/2 to 9/17/2019)
Thread-Index: AdVht8Hop/hDHJozRuOf1u/upDEYlwDE/9MAAHBrD4AAI3nQAAAPExoAAChnygAAAHZRAAAA+QCAAAJDNQAAKgi6AAAoECsA
Date: Thu, 12 Sep 2019 13:57:06 +0000
Message-ID: <D63D83E5-E084-4342-AA99-F8736D8257A6@cisco.com>
References: <003701d561b8$84171680$8c454380$@ndzh.com> <970E5C9A-7251-458B-8F9F-B452BDF58AE6@cisco.com> <CAOj+MMHEGwZ8YuaVvG0-mdKYb1gWbb6+8rM3Onf3X=CQGsbZQA@mail.gmail.com> <20A92BAE-9B85-4876-B26C-98E1BDDACA03@cisco.com> <CAOj+MMEO-btSTkayAnDOv9rBTmU=yVBP20waNSy-O0oa3gNZPg@mail.gmail.com> <20190910170030.GA1662@pfrc.org> <CAOj+MMFwmGk4jxkrttuc4LuPmYvxUz6ChVGzh-fn-+jQAE2MSg@mail.gmail.com> <20190910174135.GC1662@pfrc.org> <CAOj+MMHFyViPcfEEVO=DVGnB-hUCx1Oh9QqFeNuh+F5DCfyBnA@mail.gmail.com> <20190911144956.GB23252@pfrc.org>
In-Reply-To: <20190911144956.GB23252@pfrc.org>
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=acee@cisco.com;
x-originating-ip: [2001:420:c0c4:1008::18f]
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: 4e3d2faf-60e9-49f7-8db0-08d7378918d0
x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600166)(711020)(4605104)(1401327)(2017052603328)(7193020); SRVR:MN2PR11MB4030;
x-ms-traffictypediagnostic: MN2PR11MB4030:
x-ms-exchange-purlcount: 1
x-ms-exchange-transport-forked: True
x-microsoft-antispam-prvs: <MN2PR11MB403087B8A1F1B3362CA2F5D2C2B00@MN2PR11MB4030.namprd11.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:6790;
x-forefront-prvs: 01583E185C
x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(4636009)(39860400002)(136003)(376002)(366004)(396003)(346002)(189003)(199004)(446003)(256004)(6246003)(186003)(86362001)(6436002)(46003)(81166006)(8936002)(102836004)(25786009)(81156014)(7736002)(14454004)(305945005)(8676002)(99286004)(33656002)(71200400001)(6486002)(486006)(2906002)(71190400001)(4326008)(53936002)(110136005)(316002)(476003)(36756003)(6512007)(6306002)(6116002)(5660300002)(229853002)(6506007)(14444005)(478600001)(966005)(11346002)(66446008)(66476007)(66556008)(64756008)(76176011)(54906003)(2616005)(66946007)(76116006); DIR:OUT; SFP:1101; SCL:1; SRVR:MN2PR11MB4030; H:MN2PR11MB4221.namprd11.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1;
received-spf: None (protection.outlook.com: cisco.com does not designate permitted sender hosts)
x-ms-exchange-senderadcheck: 1
x-microsoft-antispam-message-info: reT05uu4k2kasO1vyhoQ8pw/5QwRBhFw5bWOezp5HDF0YNt/80CCUYFgFfDMiOJ60bQAWf8Nn0744IZb3F/5DZq8tiTegt4JVBkGi+LWsyuBmBLFBLaK21oekqH24WnGlLBwARH4w7QlSHbT2VJmZsYLBtzrltVk6E4p8lI+gW/fIQjDjJJEhHIfggLLYljvJc1Oxiv+R5d4VBm5kGITS48Tl1qdn9wWbfq3zPq3s+pTcSuo9iuCmbD4wjKjgw49sLHm7DLndKZnZ0JkAk+YH37xXLnOPizUO5V7lq0MrVQ7VN8sJRbVHP34XZev6dozMlDHeLf2KT6ts5zo70Ba55pzqaxGYcZA9T/Rb/znRqxeQ2nVRqRUsUKFIRVFIzE+8cLkJ3cecwrsTFdXzh3GwvbpFsvg39+mUlEOGQjNKYw=
Content-Type: text/plain; charset="utf-8"
Content-ID: <72A0441CB81EC6498770D975494D2116@namprd11.prod.outlook.com>
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-Network-Message-Id: 4e3d2faf-60e9-49f7-8db0-08d7378918d0
X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Sep 2019 13:57:06.1933 (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: OUwUKIn1duVG41SXTaUP3vBuUDQcGx1BFjxuz3DiTh4BId5q3Hm9mTWYdw5oNPAA
X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR11MB4030
X-OriginatorOrg: cisco.com
X-Outbound-SMTP-Client: 173.37.102.27, xch-rcd-017.cisco.com
X-Outbound-Node: rcdn-core-7.cisco.com
Archived-At: <https://mailarchive.ietf.org/arch/msg/idr/M3Ssax7Pf5bRxqgyShabz87_j8s>
Subject: Re: [Idr] WG adoption call for draft-merciaz-idr-bgp-bfd-strict-mode-02.txt (9/2 to 9/17/2019)
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: Thu, 12 Sep 2019 13:57:13 -0000

Hi Jeff, Robert, 
I couldn't agree more with Jeff. 
Thanks,
Acee

On 9/11/19, 10:49 AM, "Idr on behalf of Jeffrey Haas" <idr-bounces@ietf.org on behalf of jhaas@pfrc.org> wrote:

    Robert,
    
    On Tue, Sep 10, 2019 at 08:46:22PM +0200, Robert Raszuk wrote:
    > If you really want to make it work for IBGP (other then corner p2p use
    > cases) you need to encap both BFD and BGP into UDP/IP header and treat as
    > one flow. I don't see any issue with that.
    
    Aside from some radical changes to BGP transport.  That's a non-starter, and
    not a problem we're intending to address.
    
    > And last bringing down the BGP session to RRs just because BFD in strict
    > mode on that session got a hiccup serves no good.
    
    As I noted in the last response, there's a number of caveats.  Your use case
    may be different than someone else's.  If you don't like it - don't do that.
    
    Again, BFD gets used both in single and multi-hop situations for BGP.  We're
    only addressing where in the state machine it's used, not the use cases.
    And very intentionally, not prohibiting existing use cases.
    
    > To detect remote next hop liveness you have different mechanisms in place.
    
    See draft-ietf-idr-rs-bfd for some discussion on that.
    
    -- Jeff
    
    _______________________________________________
    Idr mailing list
    Idr@ietf.org
    https://www.ietf.org/mailman/listinfo/idr