Re: [Lsr] draft-ietf-isis-mpls-elc-07

"Acee Lindem (acee)" <acee@cisco.com> Wed, 28 August 2019 20:56 UTC

Return-Path: <acee@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 9BA6E120089 for <lsr@ietfa.amsl.com>; Wed, 28 Aug 2019 13:56:26 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -14.499
X-Spam-Level:
X-Spam-Status: No, score=-14.499 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, 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=gHaVwDqB; dkim=pass (1024-bit key) header.d=cisco.onmicrosoft.com header.b=fr8e0LPd
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 OgYKGZ6EAo3C for <lsr@ietfa.amsl.com>; Wed, 28 Aug 2019 13:56:24 -0700 (PDT)
Received: from alln-iport-5.cisco.com (alln-iport-5.cisco.com [173.37.142.92]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id E537112004C for <lsr@ietf.org>; Wed, 28 Aug 2019 13:56:23 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=16283; q=dns/txt; s=iport; t=1567025783; x=1568235383; h=from:to:subject:date:message-id:references:in-reply-to: mime-version; bh=82AvxlNcn2PbB5Vbx5oZtGmd4Qltom9j3BLHQfDOpkw=; b=gHaVwDqBCE/LI/PsUJi9jcLZJcs03MEcIzgH4QxbB0zuSKevQLwffsSg FDXizzQ2BW5H+WFLa1nxMnadRPdSXbSKMGO7+gFgiSnTv62ATI3Bgj0KV 1ojficIAgbb45/L2YhXUM9pGUY/DcHZXT6q1d8KROTghImWZ9dusrqPdd o=;
IronPort-PHdr: =?us-ascii?q?9a23=3AXghqpBRieABd/U9PRMjJuW7JlNpsv++ubAcI9p?= =?us-ascii?q?oqja5Pea2//pPkeVbS/uhpkESUANfA8/wRje3QvuigQmEG7Zub+FE6OJ1XH1?= =?us-ascii?q?5NksAKh0olCc+BB1f8KavjZCE3NM9DT1RiuXq8NBsdFQ=3D=3D?=
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0AkAQBJ6WZd/5tdJa1lGgEBAQEBAgE?= =?us-ascii?q?BAQEHAgEBAQGBZ4EWLyQsA21WIAQLKoQhg0cDim9Ngg+TDoRcglIDVAkBAQE?= =?us-ascii?q?MAQElCAIBAYQ/AheCOSM4EwIDCAEBBAEBAQIBBgRthS4MhUoBAQEBAxIRChM?= =?us-ascii?q?BATgPAgEIEQMBAQEoAwICAjAUCQgCBAESIoMAAYEdTQMdAQIMojACgTiIYXO?= =?us-ascii?q?BMoJ8AQEFhQkYghYDBoE0i3cYgX+BEScfgkw+gmEBAQIBgXUJDQmCVTKCJo8?= =?us-ascii?q?ihReJDI48CQKCHoZtjWMbgjKHMYQcilqNbIdvjgqCOAIEAgQFAg4BAQWBZyG?= =?us-ascii?q?BWHAVZQGCQYJCg3KFFIU/cgGBKI4HAQE?=
X-IronPort-AV: E=Sophos;i="5.64,442,1559520000"; d="scan'208,217";a="320561602"
Received: from rcdn-core-4.cisco.com ([173.37.93.155]) by alln-iport-5.cisco.com with ESMTP/TLS/DHE-RSA-SEED-SHA; 28 Aug 2019 20:56:23 +0000
Received: from XCH-RCD-014.cisco.com (xch-rcd-014.cisco.com [173.37.102.24]) by rcdn-core-4.cisco.com (8.15.2/8.15.2) with ESMTPS id x7SKuN9Y019345 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL); Wed, 28 Aug 2019 20:56:23 GMT
Received: from xhs-rtp-001.cisco.com (64.101.210.228) by XCH-RCD-014.cisco.com (173.37.102.24) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 28 Aug 2019 15:56:22 -0500
Received: from xhs-aln-001.cisco.com (173.37.135.118) by xhs-rtp-001.cisco.com (64.101.210.228) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 28 Aug 2019 16:56:21 -0400
Received: from NAM04-SN1-obe.outbound.protection.outlook.com (173.37.151.57) by xhs-aln-001.cisco.com (173.37.135.118) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Wed, 28 Aug 2019 15:56:21 -0500
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=KcToWk/JgXnMIP1pP8TEPX8e87GiPYviUGzrt4l4WAqr8id9nqtbs5gnIMnvCa52GSXMoANOWBTHCwi35+lkEYWa+OGJQL9jvYOqEJGb4FSnl+FolOJdTEWAf6WrHeSWk0hHVip5T/UvzYo2ReTEfa6+SEt0ZEmofFqG8fSulNMasRDcrEebkJSCNP7ejR686fbaMtMiaR8TR/DDTCo6OP70/jlFtBHL8nqb2AFtDuka4OLUoUWYy3e0laoNn67ux7d985x317ZXz5creCbxeCVfTQi/TArCmHtKWDrLPl7RoeO2Nc+zGFCLpMzDJc1qYgUId/OG/5BfGAdWlbJQTw==
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=82AvxlNcn2PbB5Vbx5oZtGmd4Qltom9j3BLHQfDOpkw=; b=lLX79krOnx0YRHUBONur91WFCUkmaHsBilWD+07r98URayT38h2/Mcr4Pn+DvochkbpNcppe6OESHVoY3Y38qnkKjspAhU9QAGKZsI9y8X40di+xyPa7EVFUGxMtPoIAlizVPPJWAwvhbLpi0TPRt23X8VHiwkCyClSfywaCZdSh+/kXhZoyE9OyU9IBT1EtHzVSZoQ30sIgI6OFP+s/YDA3IZGe7ySFlHAtr++/1244/NNAiwU3JOMjQVoKRyouNhBk1KecmZVEKzPjLtbjC6992RAsXXmNwYuUxDdVVuWvRrjGDIg6JSGl6WDhJVP/W8/T4+cTLHgMYSAZeQNaqw==
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=82AvxlNcn2PbB5Vbx5oZtGmd4Qltom9j3BLHQfDOpkw=; b=fr8e0LPdXF4pjTyH7bCXmEzvcKmX8pwF/deFdKOgjD8mmnjc9gMBvq8fZtwpVT2TgjDf4gTHs+HImG8v17ogJYQRzzXfGitxRfj2wCqZzz+IAxaJkehcblcOuKP8es7u7f2pdGlLS3KPEtirOdz7GVOaqylAPv+jZOnNONRqTCU=
Received: from MN2PR11MB4221.namprd11.prod.outlook.com (52.135.38.14) by MN2PR11MB4208.namprd11.prod.outlook.com (52.135.36.80) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2199.21; Wed, 28 Aug 2019 20:56:20 +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 15.20.2199.021; Wed, 28 Aug 2019 20:56:20 +0000
From: "Acee Lindem (acee)" <acee@cisco.com>
To: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>, Uma Chunduri <uma.chunduri@futurewei.com>, "lsr@ietf.org" <lsr@ietf.org>
Thread-Topic: [Lsr] draft-ietf-isis-mpls-elc-07
Thread-Index: AQHVXd/ksSeWFROOokmGeVd/cL8YDqcRBXTQ///B0oA=
Date: Wed, 28 Aug 2019 20:56:20 +0000
Message-ID: <4BBEA66D-0B41-43E6-8CDE-1E0428988718@cisco.com>
References: <BAE7E3E4-F817-43DA-BA7E-34E31A16E562@cisco.com> <BYAPR11MB3638247F602F41AC87FB3E16C1A30@BYAPR11MB3638.namprd11.prod.outlook.com>
In-Reply-To: <BYAPR11MB3638247F602F41AC87FB3E16C1A30@BYAPR11MB3638.namprd11.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=acee@cisco.com;
x-originating-ip: [2001:420:c0c4:1007::96]
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: 7f0b6cbc-e522-4c84-3a42-08d72bfa2dad
x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(5600166)(711020)(4605104)(1401327)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7193020); SRVR:MN2PR11MB4208;
x-ms-traffictypediagnostic: MN2PR11MB4208:
x-ms-exchange-purlcount: 4
x-ms-exchange-transport-forked: True
x-microsoft-antispam-prvs: <MN2PR11MB420880B4F9F885AE31B1D9A2C2A30@MN2PR11MB4208.namprd11.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:9508;
x-forefront-prvs: 014304E855
x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(4636009)(366004)(136003)(346002)(39860400002)(376002)(396003)(189003)(199004)(76116006)(71190400001)(25786009)(71200400001)(229853002)(8676002)(99286004)(606006)(966005)(478600001)(14454004)(256004)(66556008)(5660300002)(81156014)(186003)(2501003)(7736002)(81166006)(54896002)(46003)(110136005)(6512007)(6306002)(6486002)(790700001)(6506007)(53546011)(102836004)(36756003)(66946007)(6436002)(2906002)(53936002)(76176011)(476003)(11346002)(6116002)(486006)(2616005)(6246003)(316002)(64756008)(66476007)(446003)(66446008)(86362001)(33656002)(8936002)(236005); DIR:OUT; SFP:1101; SCL:1; SRVR:MN2PR11MB4208; 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: VcXQMlJagvTJJu2TUd/3zw+xmGdwPoZliFS2QPrqrSMdLudAcBeRQ7B4D5iwTetyENuu9arwaslX9EI1O7/ijbRb5vmMXcIH2AZB9uPy4DSmmyqT8/eOmYOIO/h07eRcOCPdSMxW9gpWk8abkKAm5djnEWLnB1ui2xqVozduzat1EH/5hfovFH5Ta4ONm61JJ26299N1Al6VhpQpxJdwzs4ORR9KYo6lVxVB8HC9NJyDH0VwuNUl6wlWV7DZ3RId9RzZJacSz5QcRkG7XctamfKBp46pS/m2alrh0nEgbeDKLpFPi/8lY0/DfPwNSd6z7fMDx8anZNyXxk7OyeUcfrQMszUgzWL7uESR++9q4OacRqcAtVa87XyjCzS3b8f2ieRN4Y8sQ5sz4owKEJ0N7mpZIS8hs32Hc5j6GMOOUKs=
Content-Type: multipart/alternative; boundary="_000_4BBEA66D0B4143E68CDE1E0428988718ciscocom_"
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-Network-Message-Id: 7f0b6cbc-e522-4c84-3a42-08d72bfa2dad
X-MS-Exchange-CrossTenant-originalarrivaltime: 28 Aug 2019 20:56:20.2941 (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: X5YBLw8D8TKd8jk1sUta+Y1KCoAjrg+HmleW8fGP/9VulW3zoWX4d4UgAkZuznT0
X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR11MB4208
X-OriginatorOrg: cisco.com
X-Outbound-SMTP-Client: 173.37.102.24, xch-rcd-014.cisco.com
X-Outbound-Node: rcdn-core-4.cisco.com
Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/cs4LOUSN0Fw1p044QzLjFAYeebc>
Subject: Re: [Lsr] draft-ietf-isis-mpls-elc-07
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: Wed, 28 Aug 2019 20:56:27 -0000

Les,

Then what you meant in your response was, “generic RLD” as opposed to “generic MSD”.

Thanks,
Acee




From: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
Date: Wednesday, August 28, 2019 at 4:46 PM
To: Acee Lindem <acee@cisco.com>om>, Uma Chunduri <uma.chunduri@futurewei.com>om>, "lsr@ietf.org" <lsr@ietf.org>
Subject: RE: [Lsr] draft-ietf-isis-mpls-elc-07

Acee –

I do understand the question – and I believe the reference I cited provides the answer. You need to read the referenced draft.

If you have a cogent argument why it is safe to assume that the combination of actions required to support EL translate to any other type of activity that might be required on a label stack, please make it. Then Uma’s suggestion might make sense.

   Les

From: Acee Lindem (acee) <acee@cisco.com>
Sent: Wednesday, August 28, 2019 1:34 PM
To: Les Ginsberg (ginsberg) <ginsberg@cisco.com>om>; Uma Chunduri <uma.chunduri@futurewei.com>om>; lsr@ietf.org
Subject: Re: [Lsr] draft-ietf-isis-mpls-elc-07

Hi Les,
I think the question is whether there can be a single RLD depth MSD rather than a RLD solely for entropy label discovery.
Thanks,
Acee

From: Lsr <lsr-bounces@ietf.org<mailto:lsr-bounces@ietf.org>> on behalf of "Les Ginsberg (ginsberg)" <ginsberg@cisco.com<mailto:ginsberg@cisco.com>>
Date: Wednesday, August 28, 2019 at 4:29 PM
To: Uma Chunduri <uma.chunduri@futurewei.com<mailto:uma.chunduri@futurewei.com>>, "lsr@ietf.org<mailto:lsr@ietf.org>" <lsr@ietf.org<mailto:lsr@ietf.org>>
Subject: Re: [Lsr] draft-ietf-isis-mpls-elc-07

Uma –

Please read https://tools.ietf.org/html/draft-ietf-mpls-spring-entropy-label-12#section-4

In short, we do not assume that EL Load Balancing can be performed for generic MSD.

Thanx.

   Les


From: Lsr <lsr-bounces@ietf.org<mailto:lsr-bounces@ietf.org>> On Behalf Of Uma Chunduri
Sent: Wednesday, August 28, 2019 11:38 AM
To: lsr@ietf.org<mailto:lsr@ietf.org>
Subject: [Lsr] draft-ietf-isis-mpls-elc-07

Can anybody tell what was the conclusion (if any) in previous discussions in various WGs on why the readable label depth in an LSR has to be entropy label specific ?

IOW can we just modify this as “readable label depth” as opposed to “entropy readable label depth” ?
This would allow any other special purpose label inserted in the stack and would be at par with current MSD type “Base MPLS Imposition MSD” ( https://www.iana.org/assignments/igp-parameters/igp-parameters.xhtml ).


--
Uma C.