Re: [Lsr] I-D Action: draft-ietf-lsr-dynamic-flooding-02.txt

"Les Ginsberg (ginsberg)" <ginsberg@cisco.com> Tue, 28 May 2019 03:03 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 CC3821200CD for <lsr@ietfa.amsl.com>; Mon, 27 May 2019 20:03:40 -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=jgv26Hyc; dkim=pass (1024-bit key) header.d=cisco.onmicrosoft.com header.b=dcP0uHzR
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 2iR5bh0JRGEE for <lsr@ietfa.amsl.com>; Mon, 27 May 2019 20:03:38 -0700 (PDT)
Received: from alln-iport-1.cisco.com (alln-iport-1.cisco.com [173.37.142.88]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9C865120092 for <lsr@ietf.org>; Mon, 27 May 2019 20:03:38 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2690; q=dns/txt; s=iport; t=1559012618; x=1560222218; h=from:to:subject:date:message-id:references:in-reply-to: content-transfer-encoding:mime-version; bh=fPce1LRyG84goB88wSItvrXQRSdV3PP/RoCRZT5HqyQ=; b=jgv26Hyc7YVzlfv3/fw4MEfor3MJiyT7lTV+KNglqdKYuuwjbIXqsDE/ dplBm5AIKVvQH8SHjFYIjaH+7SLOoBctAdDjbyYjaeooQW5GuAwsA3BYt qlTkRodU4DNRWdwDSOcEyuiVkC6RyfnkxdHp5XbtFBeBqqGU5iHF639Nx U=;
IronPort-PHdr: =?us-ascii?q?9a23=3AAAmjABeyiMJAU5joZ7FwWr1zlGMj4e+mNxMJ6p?= =?us-ascii?q?chl7NFe7ii+JKnJkHE+PFxlwGQD57D5adCjOzb++D7VGoM7IzJkUhKcYcEFn?= =?us-ascii?q?pnwd4TgxRmBceEDUPhK/u/YC08B85PTlBN9HCgOk8TE8H7NBXf?=
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0A9BgC9pOxc/4ENJK1lH4F4gT5QA2l?= =?us-ascii?q?VIAQLKIdaA456SoINlyuBLoEkA1QJAQEBDAEBGA0IAgEBhEACglYjNAkOAQM?= =?us-ascii?q?BAQQBAQIBBG0cAQuFSgEBAQQBARAoBgEBLAwLBAIBCBEEAQEeARAnCx0IAgQ?= =?us-ascii?q?TCBMHgwGBagMdAQIMnFACgTiIX4IggnkBAQWBNgIOQYJ0GIIPCYE0i1MXgUA?= =?us-ascii?q?/gRBHgkw+gmEBAQIBARaBSSSDFoImqFcJAoINhjSMfIIfZ4V/jUSMbocCjnY?= =?us-ascii?q?CBAIEBQIOAQEFgU84gVdwFRohgmwJhXaFFIU/coEpjW0BAQ?=
X-IronPort-AV: E=Sophos;i="5.60,520,1549929600"; d="scan'208";a="277182084"
Received: from alln-core-9.cisco.com ([173.36.13.129]) by alln-iport-1.cisco.com with ESMTP/TLS/DHE-RSA-SEED-SHA; 28 May 2019 03:03:28 +0000
Received: from XCH-ALN-017.cisco.com (xch-aln-017.cisco.com [173.36.7.27]) by alln-core-9.cisco.com (8.15.2/8.15.2) with ESMTPS id x4S33SXe030088 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL) for <lsr@ietf.org>; Tue, 28 May 2019 03:03:28 GMT
Received: from xhs-aln-002.cisco.com (173.37.135.119) by XCH-ALN-017.cisco.com (173.36.7.27) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 27 May 2019 22:03:27 -0500
Received: from xhs-aln-002.cisco.com (173.37.135.119) by xhs-aln-002.cisco.com (173.37.135.119) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 27 May 2019 22:03:27 -0500
Received: from NAM03-BY2-obe.outbound.protection.outlook.com (173.37.151.57) by xhs-aln-002.cisco.com (173.37.135.119) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Mon, 27 May 2019 22:03:27 -0500
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=0qeClTFabeU+6ip4ToQ7RZ1GRu3F7CDkU73QC+b3XD8=; b=dcP0uHzRi/nXBXvclf7Idq/X0b7e4jfhKC6D2zLYjA9eOeIb6hr8w1xEiFqQK8Hfwken+ZAjcTfbIZnBzHscbFfKwBcjUMNNu5lmrjL+Mz/yU83MMa4nf95Su9ABVK4H+CMWcTg+/VStcvx2koyZtq84HGFQHs9LRLNrZCS6/WY=
Received: from BYAPR11MB3638.namprd11.prod.outlook.com (20.178.237.19) by BYAPR11MB3462.namprd11.prod.outlook.com (20.177.187.15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1922.16; Tue, 28 May 2019 03:03:26 +0000
Received: from BYAPR11MB3638.namprd11.prod.outlook.com ([fe80::ace2:8693:202d:5a30]) by BYAPR11MB3638.namprd11.prod.outlook.com ([fe80::ace2:8693:202d:5a30%7]) with mapi id 15.20.1922.021; Tue, 28 May 2019 03:03:26 +0000
From: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
To: "lsr@ietf.org" <lsr@ietf.org>
Thread-Topic: [Lsr] I-D Action: draft-ietf-lsr-dynamic-flooding-02.txt
Thread-Index: AQHVFQE82GariqVNREmpT1/twlnlraZ/2Ipw
Date: Tue, 28 May 2019 03:03:25 +0000
Message-ID: <BYAPR11MB36384119CF677CE011A0FD9CC11E0@BYAPR11MB3638.namprd11.prod.outlook.com>
References: <155901221660.729.5361681746089300201@ietfa.amsl.com>
In-Reply-To: <155901221660.729.5361681746089300201@ietfa.amsl.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=ginsberg@cisco.com;
x-originating-ip: [2001:420:c0c8:1003::199]
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: bf57549f-6aea-4fc1-dea7-08d6e3190d92
x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(5600148)(711020)(4605104)(1401327)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7193020); SRVR:BYAPR11MB3462;
x-ms-traffictypediagnostic: BYAPR11MB3462:
x-ms-exchange-purlcount: 5
x-microsoft-antispam-prvs: <BYAPR11MB34621AA90CE4734FF9BD4226C11E0@BYAPR11MB3462.namprd11.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:7691;
x-forefront-prvs: 00514A2FE6
x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(396003)(346002)(39860400002)(136003)(366004)(376002)(199004)(189003)(13464003)(99286004)(7696005)(76176011)(53546011)(6506007)(102836004)(2501003)(53936002)(74316002)(14454004)(966005)(86362001)(478600001)(68736007)(81156014)(81166006)(1730700003)(8676002)(25786009)(6246003)(6916009)(229853002)(8936002)(71200400001)(55016002)(5660300002)(305945005)(6306002)(7736002)(5640700003)(9686003)(6116002)(64756008)(2906002)(2351001)(66946007)(66556008)(66476007)(66446008)(73956011)(6436002)(76116006)(71190400001)(316002)(186003)(446003)(11346002)(46003)(486006)(476003)(33656002)(66574012)(14444005)(256004)(52536014); DIR:OUT; SFP:1101; SCL:1; SRVR:BYAPR11MB3462; H:BYAPR11MB3638.namprd11.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX: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: 9YZ+mjbNP179QZ88qO8o2c8gz8JXV0P2xib+7G0SMzoMGlnQ29QvUGMoppQwcHTgrXzDD4Ra/C9xy5hw2ekHBwYBWQsu4lPP/s9dX15n0UlefJIP/OPjsEJJ1z8KqzoBbaY3Qdsyip+66D+WcCKrVeQNILiG7OODPleivGzLKMqsaD/+0WJceyHrokrd58Z25vz+I8wGfCuUneAFDCz9Y5jQwpZnScp91ik1uxncz9+KCr2xotpdhR4u6kmR62H4qK0YWsmm1jrooGSOQUkDq8yMfGZGHpTbd8umpJ/rW+KYwQV2loXhMtL7i5jDXdS2iQiQdLhxa2u3Ez4eKChW426H1MMGxM3ziWdfieW5lzQzVvdWFbKFz8QpiFplzThw6InhwcCYe6FAirUuLjZ0HUbedtsTRyY5MZOOgK5VVhw=
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-Network-Message-Id: bf57549f-6aea-4fc1-dea7-08d6e3190d92
X-MS-Exchange-CrossTenant-originalarrivaltime: 28 May 2019 03:03:25.9801 (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: ginsberg@cisco.com
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR11MB3462
X-OriginatorOrg: cisco.com
X-Outbound-SMTP-Client: 173.36.7.27, xch-aln-017.cisco.com
X-Outbound-Node: alln-core-9.cisco.com
Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/N-cYanCbsFOktQ7_-qv2XWXY74s>
Subject: Re: [Lsr] I-D Action: draft-ietf-lsr-dynamic-flooding-02.txt
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: Tue, 28 May 2019 03:03:41 -0000

Folks -

The latest revision includes:

1)Revision to the encoding of the OSPF Router ID TLVs to allow multiple IDs of the same "connection type" to be included in the same TLV.
This optimization was suggested by Huaimo Chen (thanx!!)

2)Some clarifications as to how Dynamic Flooding can be enabled/disabled

3)Suggestions as to how recovery from the failure of the Area Leader can be less disruptive

   Les


> -----Original Message-----
> From: Lsr <lsr-bounces@ietf.org> On Behalf Of internet-drafts@ietf.org
> Sent: Monday, May 27, 2019 7:57 PM
> To: i-d-announce@ietf.org
> Cc: lsr@ietf.org
> Subject: [Lsr] I-D Action: draft-ietf-lsr-dynamic-flooding-02.txt
> 
> 
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> This draft is a work item of the Link State Routing WG of the IETF.
> 
>         Title           : Dynamic Flooding on Dense Graphs
>         Authors         : Tony Li
>                           Peter Psenak
>                           Les Ginsberg
>                           Tony Przygienda
>                           Dave Cooper
>                           Luay Jalil
>                           Srinath Dontula
> 	Filename        : draft-ietf-lsr-dynamic-flooding-02.txt
> 	Pages           : 47
> 	Date            : 2019-05-27
> 
> Abstract:
>    Routing with link state protocols in dense network topologies can
>    result in sub-optimal convergence times due to the overhead
>    associated with flooding.  This can be addressed by decreasing the
>    flooding topology so that it is less dense.
> 
>    This document discusses the problem in some depth and an
>    architectural solution.  Specific protocol changes for IS-IS, OSPFv2,
>    and OSPFv3 are described in this document.
> 
> 
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-lsr-dynamic-flooding/
> 
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-lsr-dynamic-flooding-02
> https://datatracker.ietf.org/doc/html/draft-ietf-lsr-dynamic-flooding-02
> 
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-ietf-lsr-dynamic-flooding-02
> 
> 
> Please note that it may take a couple of minutes from the time of submission
> until the htmlized version and diff are available at tools.ietf.org.
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
> 
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr