IETF Logo Mail Archive

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

"Les Ginsberg (ginsberg)" <ginsberg@cisco.com> Wed, 28 August 2019 20:46 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 DCF1C120059 for <lsr@ietfa.amsl.com>; Wed, 28 Aug 2019 13:46:07 -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=aovGlbhb; dkim=pass (1024-bit key) header.d=cisco.onmicrosoft.com header.b=TwcZehfl
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 WdRaKtaza1BG for <lsr@ietfa.amsl.com>; Wed, 28 Aug 2019 13:46:05 -0700 (PDT)
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 51BA312004C for <lsr@ietf.org>; Wed, 28 Aug 2019 13:46:05 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=13438; q=dns/txt; s=iport; t=1567025165; x=1568234765; h=from:to:subject:date:message-id:references:in-reply-to: mime-version; bh=SuksI1J2k3RI/sKpcEY0U6mROR75pIVnsM9qSFymBDs=; b=aovGlbhbkz9bqW6W4QQu39engICerYbmf8JnKY+5tmuuNAyh/cNCgmUv paNypE0BwOSTNxadk8LVb2PROPyVVLYGE/xk1uprychUFHebCf8DP7zDU xE54tMUnD2ZNMMt+dHirgpIgYnbvyRbWJGMJbU24eMNSHXNqwJ2TNgIfM 4=;
IronPort-PHdr: 9a23:PhCcnBDJNktDbXnjeb2UUyQJPHJ1sqjoPgMT9pssgq5PdaLm5Zn5IUjD/qs03kTRU9Dd7PRJw6rNvqbsVHZIwK7JsWtKMfkuHwQAld1QmgUhBMCfDkiuI//sdCY3BstqX15+9Hb9Ok9QS47z
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: A0DUAAAQ52Zd/4sNJK1lGQEBAQEBAQEBAQEBAQcBAQEBAQGBZ4EWLyQsA21WIAQLKoQhg0cDim9Ngg+TDoRcglIDVAkBAQEMAQElCAIBAYQ/AheCOSM4EwIDCAEBBAEBAQIBBgRthS4MhUoBAQEBAxIRChMBATgPAgEIEQMBAQEoAwICAjAUCQgCBAESCBqDAYEdTQMdAQIMojMCgTiIYXOBMoJ8AQEFhQsYghYDBoE0i3cYgUA/gRFGgkw+gmEBAQIBgWAVCQ0JglUygiaPIoUXiQyOPAkCgh6GbY1+gjKHMYQcilqNbIdvkEICBAIEBQIOAQEFgWchgVhwFYMngkKDcoUUhT9yAYEojgcBAQ
X-IronPort-AV: E=Sophos;i="5.64,442,1559520000"; d="scan'208,217";a="321163395"
Received: from alln-core-6.cisco.com ([173.36.13.139]) by alln-iport-2.cisco.com with ESMTP/TLS/DHE-RSA-SEED-SHA; 28 Aug 2019 20:46:03 +0000
Received: from XCH-ALN-006.cisco.com (xch-aln-006.cisco.com [173.36.7.16]) by alln-core-6.cisco.com (8.15.2/8.15.2) with ESMTPS id x7SKk3sr020838 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL); Wed, 28 Aug 2019 20:46:03 GMT
Received: from xhs-rcd-002.cisco.com (173.37.227.247) by XCH-ALN-006.cisco.com (173.36.7.16) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 28 Aug 2019 15:46:03 -0500
Received: from xhs-rcd-003.cisco.com (173.37.227.248) by xhs-rcd-002.cisco.com (173.37.227.247) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 28 Aug 2019 15:46:02 -0500
Received: from NAM01-SN1-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 15.0.1473.3 via Frontend Transport; Wed, 28 Aug 2019 15:46:02 -0500
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=SHqWmWMu3UHLgdLtDD5kNEgDNXTpy/SxgTmEgZt4bTAAtpUAbs1IgyXcq03gRxXSMzUeoMvw8K+gOD4pUc0c9/QsoLWqqxIl/h1cFpWy6Fg7TU6gkxgvgVJ44g1+gJxJfVxbY9ec+wrPEAwV30NRMWLN3mX4Zg+yYv+IR3zUHGFUMnCPCX/bmSnqs5KmBQQTBhP4hbB8JidQtwLKogivJ70DW+ZfxagvUoJxTcGIcXZ3TXsg/yhkAC6dhoA4psFiShcHIt7rZCq66Cew7zrfcksNoxRf84tXLXdgesecR7ldvD4KwRern5wBqJHHZnOAPGsaEMnv+LjSAisujUuF+g==
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=SuksI1J2k3RI/sKpcEY0U6mROR75pIVnsM9qSFymBDs=; b=VT5YHMals8HVzpc5P2PrmSPhl6UTwjbjibztxEsMjRfp3gdwWMWeMLYZCDZmxEXArubv5vF4gvLFS8P4c1CmS2Lw0/0fS59IiGnWYrptJAtid96q71y1Kothj9GSiX7OszcRaDDvBjSRplgFiZ7ChDhpcvdMBx28jVHUuEtk1Imztld3Tp+XN+7CnereDHrzxjWj+kg65WiqP6oVNMIKk2t1SNtJBT572wpLMwCwVS77GnhqMWM6tZTNO7SJjZOT2o28TJVuPPnllXsOv4+jNd6cyQt9ECVeYOExhkl2aB5QSjZh7XIoSy34wwb01RcD2yTI0YN7cdh9p1ai4VE4+g==
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=SuksI1J2k3RI/sKpcEY0U6mROR75pIVnsM9qSFymBDs=; b=TwcZehflwsVZK5yYLLA19L6cgAyRM+4WFIwedklkIX/S0gC+Izv9OXj/M9HRqRhB0Ipku1CHHQKsNgOfuJX25TDSquQ0nlDOYtodNnikihaI9fJsEkR/IhRJ0VUuW3pc0ty0rWOZE71wEDfo6BzFHn9L8M5M13NP94uWkojnZuo=
Received: from BYAPR11MB3638.namprd11.prod.outlook.com (20.178.237.19) by BYAPR11MB2999.namprd11.prod.outlook.com (20.177.224.160) 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 20:46:01 +0000
Received: from BYAPR11MB3638.namprd11.prod.outlook.com ([fe80::d8d2:7e49:1687:aab2]) by BYAPR11MB3638.namprd11.prod.outlook.com ([fe80::d8d2:7e49:1687:aab2%3]) with mapi id 15.20.2178.023; Wed, 28 Aug 2019 20:46:01 +0000
From: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
To: "Acee Lindem (acee)" <acee@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
Date: Wed, 28 Aug 2019 20:46:01 +0000
Message-ID: <BYAPR11MB3638247F602F41AC87FB3E16C1A30@BYAPR11MB3638.namprd11.prod.outlook.com>
References: <BAE7E3E4-F817-43DA-BA7E-34E31A16E562@cisco.com>
In-Reply-To: <BAE7E3E4-F817-43DA-BA7E-34E31A16E562@cisco.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:c0c8:1002::3ea]
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: 4dca70c1-9d86-4199-5c01-08d72bf8bcd0
x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600166)(711020)(4605104)(1401327)(2017052603328)(7193020); SRVR:BYAPR11MB2999;
x-ms-traffictypediagnostic: BYAPR11MB2999:
x-ms-exchange-purlcount: 4
x-ms-exchange-transport-forked: True
x-microsoft-antispam-prvs: <BYAPR11MB2999A37091B98B08879C1717C1A30@BYAPR11MB2999.namprd11.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:10000;
x-forefront-prvs: 014304E855
x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(979002)(4636009)(136003)(346002)(396003)(39860400002)(366004)(376002)(199004)(189003)(2501003)(74316002)(76176011)(7696005)(486006)(110136005)(2906002)(256004)(46003)(446003)(99286004)(6306002)(81166006)(25786009)(186003)(53546011)(53936002)(102836004)(8676002)(33656002)(11346002)(8936002)(476003)(81156014)(7736002)(55016002)(6436002)(236005)(54896002)(6246003)(9686003)(478600001)(606006)(229853002)(52536014)(966005)(6506007)(790700001)(71200400001)(71190400001)(6116002)(86362001)(64756008)(66476007)(66446008)(66556008)(76116006)(66946007)(14454004)(5660300002)(316002)(969003)(989001)(999001)(1009001)(1019001); DIR:OUT; SFP:1101; SCL:1; SRVR:BYAPR11MB2999; 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: vD7F7Y4KI4KHxG2wflxwDgZkGNV7jlBj292o1xJDkELC6+ixJ2xgKWht1hLiw2x0XEkj8KfsntWQiH0bo8mpzEGTcXcB7Utg+AZyw0GYQ47h+awT9lodBe4jsCLYyyPlw6d9AnenVdSObq8JDoiYeFHMhiiT0E7zvc0a9OEkzvr6etcKVLa6X8TyNbHYoo8Qf9qcI1+g2hkQyuSecr27g6ML77OhoqoWdUKpoRo8V7OjVdSnAN+lRR6Dp5HnTYRpLbPzFgRYZ9YWVn2JvW73LKbYsfPDLh+E0R89QL1zB9/FmWICIY8S5JYgUrCM1DMvp0GCV2hKUem6P2j374WLsl8sSKqQAQxTVry6N7rsUp/Q5tbNEMlYloo3PS6YJ5xGet96l92MR0weQgD3al3loqh9BVSpksPZyAECmTTKzHw=
Content-Type: multipart/alternative; boundary="_000_BYAPR11MB3638247F602F41AC87FB3E16C1A30BYAPR11MB3638namp_"
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-Network-Message-Id: 4dca70c1-9d86-4199-5c01-08d72bf8bcd0
X-MS-Exchange-CrossTenant-originalarrivaltime: 28 Aug 2019 20:46:01.3481 (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: I5OWkFNGSXetBdOt5fQZhtkhEApdZBht6YF1+Sn8KTPm1Wf/ULsNf366iW5vRKit7XaBPSq4AEpOTLsk/+B4hg==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR11MB2999
X-OriginatorOrg: cisco.com
X-Outbound-SMTP-Client: 173.36.7.16, xch-aln-006.cisco.com
X-Outbound-Node: alln-core-6.cisco.com
Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/dwRC-ATqWJlsA5dwLi2yI-WH8Vg>
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 20:46:08 -0000

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>; Uma Chunduri <uma.chunduri@futurewei.com>; 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.

v2.23.0 | Report a Bug | By Email