Re: [Lsr] LSR WG Adoption Poll for "Flexible Algorithms: Bandwidth, Delay, Metrics and Constraints" - draft-hegde-lsr-flex-algo-bw-con-02

Shraddha Hegde <shraddha@juniper.net> Thu, 27 May 2021 12:36 UTC

Return-Path: <shraddha@juniper.net>
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 D21153A00C0; Thu, 27 May 2021 05:36:51 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.797
X-Spam-Level:
X-Spam-Status: No, score=-2.797 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.698, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=juniper.net header.b=lK1x5ikx; dkim=pass (1024-bit key) header.d=juniper.net header.b=ehwiovs0
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 RQ7Qbq-u61Kn; Thu, 27 May 2021 05:36:46 -0700 (PDT)
Received: from mx0b-00273201.pphosted.com (mx0a-00273201.pphosted.com [208.84.65.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0C8C73A006A; Thu, 27 May 2021 05:36:45 -0700 (PDT)
Received: from pps.filterd (m0108157.ppops.net [127.0.0.1]) by mx0a-00273201.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 14RCT13o018198; Thu, 27 May 2021 05:36:44 -0700
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=juniper.net; h=from : to : cc : subject : date : message-id : references : in-reply-to : content-type : content-transfer-encoding : mime-version; s=PPS1017; bh=bclFyyba7zH1AlLxzZ+jAoevZ32+8h0nrC6gY3bDkqs=; b=lK1x5ikx2p2rlWFujzJN+4GGAmNMeVxVzOXRH8X2w09vlh0sfWxLlyjAeXNPzKEL+GPo eBK3y7uKrSyHO00UDDQnOlfpNWG0ltweH6cGCpnKUuCfdsBwjcKIsKUJskDH7kjokFfD uPruxtOAy2QxGqDHZ+6Pt5dghHBKtMKKw2/cDS5mHqoO48TFoEPSW3kz3BumMflhqHmg 58Elu0lfRkTmoDoyJkMzHk0Xd5otivu+Wv9Vdlphf+rJZnyanODNQYpmmeuL56o08+p2 dDpLUElrUghlimsRCdF2xbzE5mPbI7bFIbm1UuT4nVl2zrcIQpLRgi3WC6zQsF8WQ6jr nQ==
Received: from nam12-bn8-obe.outbound.protection.outlook.com (mail-bn8nam12lp2170.outbound.protection.outlook.com [104.47.55.170]) by mx0a-00273201.pphosted.com with ESMTP id 38t9a808m7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 27 May 2021 05:36:44 -0700
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=hAw/ILLNQiF0cy0w5dZmfl3jp06ljjHuxGpYm2JLYpdhJ4wm1EDfPR44Qo5/Y2icVusdpLsuaWKXl9M4r/MZlubC0u+lnyec/Fo3H0oLdfuD1dOknuXvb1hYPYmAnSbjzUkpF+P767GBKFpHzVJFma3vQp80vDmvay9ShosQux0yalY/4vJRC0WX0Dr4RKjmwAbxD4olde00N12/nCbtygFU2j6KOp13DJtEMSvewK+DlXUMKm88JkwpL6tFsXiQHLcNW5FQKGjx2eXhsgbB0Y2PdIK8gWUEcl2xmuNPuq79cgqsORq+j89gQgVbwE+uuextpvwW+AiffXbXa38WiQ==
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=bclFyyba7zH1AlLxzZ+jAoevZ32+8h0nrC6gY3bDkqs=; b=eRDQVnhpwtAzOFDmfVFRkVegx845gQ6VvgiLFme3q7SyjG0+dd587/2lAY8UAHdhrFFRMj43Qrl2wm6PtX5xRIGm3SfUy2XBMWj5myFp0gRT/X7eRaxgvR4PynEihtladz9GzUaQFvCDQHhfYn44RYmN84twhiHF6ygb40f9ysp34cZUn3tnv45nhh0WG9J36TbmgsoKZDtp8zAFLiyiX13g4hES3q71SOmJIdhRmcvcFHqPYaVSNkd1eK4oNwJr9mPPnycbDpOuG6n+RS33fAe5rHwafe8QjMC0dgDXHyLSdgyRG3suE3VYldOQcFuayLZuIZ3RsOmPXMl27q4Wfg==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=juniper.net; dmarc=pass action=none header.from=juniper.net; dkim=pass header.d=juniper.net; arc=none
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=juniper.net; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=bclFyyba7zH1AlLxzZ+jAoevZ32+8h0nrC6gY3bDkqs=; b=ehwiovs0LTpT9lqfdm6e6QOHUg5aJ5BL4y2439JmtQ4wMxtngKD4WN+/aj3dfWOTOOYrkcmWq7vfXUcdeUmXtYG7RJKUBw+HlDVQoWjRZh/DXt+XD/0mhPmABauzPiXB8UjeIPQIV3CJ4QZJ497l6ILmzFJtyE3Ae4nDe4dlYAM=
Received: from CY4PR05MB3576.namprd05.prod.outlook.com (2603:10b6:910:52::22) by CY4PR05MB3271.namprd05.prod.outlook.com (2603:10b6:903:f4::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4195.9; Thu, 27 May 2021 12:36:42 +0000
Received: from CY4PR05MB3576.namprd05.prod.outlook.com ([fe80::2cb6:435f:f75b:1602]) by CY4PR05MB3576.namprd05.prod.outlook.com ([fe80::2cb6:435f:f75b:1602%6]) with mapi id 15.20.4173.020; Thu, 27 May 2021 12:36:41 +0000
From: Shraddha Hegde <shraddha@juniper.net>
To: Peter Psenak <ppsenak@cisco.com>, Tony Li <tony.li@tony.li>, Ketan Jivan Talaulikar <ketant@cisco.com>
CC: "lsr@ietf.org" <lsr@ietf.org>, "draft-hegde-lsr-flex-algo-bw-con@ietf.org" <draft-hegde-lsr-flex-algo-bw-con@ietf.org>, "Acee Lindem (acee)" <acee=40cisco.com@dmarc.ietf.org>
Thread-Topic: [Lsr] LSR WG Adoption Poll for "Flexible Algorithms: Bandwidth, Delay, Metrics and Constraints" - draft-hegde-lsr-flex-algo-bw-con-02
Thread-Index: AQHXR3MLVak8G/B87Uy6Hz9GuLxph6ry6AsAgAAi2ICAAk+LIIAAsj6AgAAE0QCAAUh/4A==
Date: Thu, 27 May 2021 12:36:41 +0000
Message-ID: <CY4PR05MB3576FC5B449DDA9BB82C38E6D5239@CY4PR05MB3576.namprd05.prod.outlook.com>
References: <0BAE6DBA-04A3-4A3A-A1E3-14EFAA0FBE68@cisco.com> <MW3PR11MB4570FB10A5788FDA3BBA6C91C1269@MW3PR11MB4570.namprd11.prod.outlook.com> <AE6570D7-062E-4F8A-92E8-120FA52D4785@tony.li> <MW3PR11MB4570BF55DAA30AAB9E25D7EEC1249@MW3PR11MB4570.namprd11.prod.outlook.com> <82697C23-4283-4646-A266-F67828337C5C@tony.li> <8c49f2d0-0842-bff5-9121-7ceb37781a38@cisco.com>
In-Reply-To: <8c49f2d0-0842-bff5-9121-7ceb37781a38@cisco.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
dlp-product: dlpe-windows
dlp-version: 11.6.100.41
dlp-reaction: no-action
msip_labels: MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Enabled=true; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_SetDate=2021-05-27T12:36:39Z; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Method=Standard; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Name=0633b888-ae0d-4341-a75f-06e04137d755; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_SiteId=bea78b3c-4cdb-4130-854a-1d193232e5f4; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_ActionId=2bb6e980-6aba-4ea3-bb89-afd3e45b9891; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_ContentBits=2
authentication-results: cisco.com; dkim=none (message not signed) header.d=none;cisco.com; dmarc=none action=none header.from=juniper.net;
x-originating-ip: [116.197.184.13]
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: 80628c68-5459-46cc-0bf2-08d9210c14aa
x-ms-traffictypediagnostic: CY4PR05MB3271:
x-microsoft-antispam-prvs: <CY4PR05MB32713310B8D78C06FF08614ED5239@CY4PR05MB3271.namprd05.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:CY4PR05MB3576.namprd05.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(39860400002)(396003)(376002)(346002)(136003)(366004)(9686003)(4326008)(2906002)(478600001)(55016002)(33656002)(8936002)(8676002)(38100700002)(122000001)(316002)(110136005)(54906003)(186003)(83380400001)(66946007)(86362001)(5660300002)(71200400001)(52536014)(76116006)(7696005)(26005)(66446008)(64756008)(66556008)(66476007)(53546011)(6506007); DIR:OUT; SFP:1102;
x-ms-exchange-antispam-messagedata: =?utf-8?B?bEJlN0FiV2lZdnBmcjFtQ1o0WGZEK2J5aVB4VEM2ZmRTaGNYTm92dlBNdXl5?= =?utf-8?B?K3NjemdpNGNjUkpLVEF4bzBhYVRkWU5TZjNRZVlZeENFYzVWbVV5NXdyamtv?= =?utf-8?B?aHNxRkhiVWdPOHd2amFjMXVUNjlXUTlOeW83SXA2YXc0MHgvV1ZSdG9kRytz?= =?utf-8?B?VjZqUG5SWitvV1ZrbnAwYXJNSGRjM0MzWHNNWFlrVzM4RnNjY2NGRjJnVGVy?= =?utf-8?B?Z0dFSEt0cDh6eGlwQnM0MVJBUTNpMzV2Yk1hMHdVdCs5MFJsY0ZzSDZ4L2tD?= =?utf-8?B?bXpBRllFUXhJQ3pqQ0ZXWjc5SlZMYnlwZDF4OSt0VWxlWkRZS21rYTdRN21w?= =?utf-8?B?YjlzcnM4K24wcC9rMXhRa1Y2bjlGamQ1VXVreGdaU1MvbUtBczBzYUZpSHk4?= =?utf-8?B?U1Z3UTJJY2ttT2ZyZkpHKzBNUFB4TkV0TlZ5U2tZYlhaQlBuQWhBbWZtYjgz?= =?utf-8?B?ZVQ5aFduanBmUk04RENFalpyWUo5NjRHZlJERTZ6TFU1ZC9vNjdySUtpSVJr?= =?utf-8?B?T3BPaTZ4eGVJUU1nV3FydVN4YlNpVGlSN2NpdlVvdzJQVUtEQXVCK1JCSVRQ?= =?utf-8?B?eEFHd0JCYWJZQmxmd2RVaWtPRTRzanEyb3A1THAxM0t1UktwVHdHeTZCL3Ex?= =?utf-8?B?Y3IzMHYvNFQ0K084aWFOZUZZakRxRVRlbDNjLzY3d29GTVVheUNpd2J1a3da?= =?utf-8?B?L0tDNGVFK2xHQm1mRSs2OS8zTmdmc1dNb1dGRWdxZUdIUG5KQnQzRUJIMHJu?= =?utf-8?B?TjA2eDFXN1h4MXorMHJQcGgvWVh2QjRVMkt2YlRSVHJtZlI0SUx1cC8zMXA0?= =?utf-8?B?ZXlBQ0E3RHB1QWJJUm40d1NzV2ZUdXh3MWZqWTRYbFNyWmxDa1RhZkR1d2tx?= =?utf-8?B?M2NpSkFlVzF0Q2h1b1BkbnAySzhxVkh2K3ZBb1RMN1cwKzhxcDg5c3l3UWtk?= =?utf-8?B?bjJJNDFObElpMy8zempNMGZnZlJiTHN3YVN1UStKTkNZMXpyWlJwMktNcnRu?= =?utf-8?B?SHlkZVNyek1aOXdnQVJBVlgvbXorUU1uNEFmKzAwcHRqSy8vRURJSDB3bDNF?= =?utf-8?B?U0VyWC8va0dUUUJJVDBQd1hLb0RqdjJNOGpYbmRDNi9ja2dQWTNlQUwxYjda?= =?utf-8?B?Mzl2Nm9HNXZvY0xoNGxiU0JXU08rQS96L3lCUXNOSHljaE00bXUzT212SWxR?= =?utf-8?B?WjkvZS9PaDdySXFQUWpaa2dMQ0NVdCs1Tmh1ay9FUFZWTk9WSHpqZzVQRkF1?= =?utf-8?B?d1lkNmh2MkRaTGN4V3JrY01hakNKaDVsSE5XR3k3VGEzNXJVb2tVeHhtRHNj?= =?utf-8?B?VkdvMkNUUlkydG1ZK0dHc2E4QU50RjdncXB1VXJzVmJvRWRtRVVNNlNjRjBp?= =?utf-8?B?Z09ibkpHZFBSSWthc0UrS28yaHIySDBJaWZ2Y0R6bXl3Tk5XS3BEaWdJK3FL?= =?utf-8?B?YSsxKzUvdlo5NFRXUTJpTWhWODhRUDJ5NVlvRmplZkNsellRUWdQVU4vTEk1?= =?utf-8?B?ZHlFem9taDVtZkFVMXYvM0FwMnpmOXZYci9LTmtKSUszd3F5QXBmdG50VmZO?= =?utf-8?B?aVBUamZ4T24ycmxwWnZPdE41U2gvaGUxczV1RUZDNnJES1N0Q1ZFQWRDZDhM?= =?utf-8?B?YWhmUGhKVTJtZjNtZjFjZ3RPa0JkV29qNWVKWUE3UHBrWE8zM0ZJby9KT2g2?= =?utf-8?B?R1Y1a1NNWUhSL2FyOStXKzFDTlkxVVVmaTUvaDRHbm1DZ2JNYmJ5N2EvOFh4?= =?utf-8?Q?Z4rngymf/Wl5i89pviBm5L/Kqyvbs+yrRHsio5L?=
x-ms-exchange-transport-forked: True
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-OriginatorOrg: juniper.net
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: CY4PR05MB3576.namprd05.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 80628c68-5459-46cc-0bf2-08d9210c14aa
X-MS-Exchange-CrossTenant-originalarrivaltime: 27 May 2021 12:36:41.7559 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: bea78b3c-4cdb-4130-854a-1d193232e5f4
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: oIlunH1UbcsNGpthAHiBA7glLAzyPkhhO890Q/FoKoqcGFTCWqHyPayZznhzN1KuDkOLQ2L2BGMLL8Kl1MwMpw==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR05MB3271
X-Proofpoint-GUID: QPfpthjdTZGfX_uMkN-MgZz6-EE394Qo
X-Proofpoint-ORIG-GUID: QPfpthjdTZGfX_uMkN-MgZz6-EE394Qo
X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.761 definitions=2021-05-27_06:2021-05-26, 2021-05-27 signatures=0
X-Proofpoint-Spam-Details: rule=outbound_spam_notspam policy=outbound_spam score=0 malwarescore=0 clxscore=1015 adultscore=0 suspectscore=0 priorityscore=1501 lowpriorityscore=0 mlxlogscore=999 bulkscore=0 mlxscore=0 phishscore=0 impostorscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105270083
Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/xp7BFm7fqw30BgB68AJFc59J8pk>
Subject: Re: [Lsr] LSR WG Adoption Poll for "Flexible Algorithms: Bandwidth, Delay, Metrics and Constraints" - draft-hegde-lsr-flex-algo-bw-con-02
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: Thu, 27 May 2021 12:36:52 -0000

>we only need the new TLV to carry FAPM if we make the Generic Metric's size variable. If we keep it fixed size, we >should be fine with the existing FAPM.

Yes agree. 
The idea of making generic metric variable length is worth considering.
I don't see a strong enough usecase right now to make it variable length but will wait
for inputs from WG.

Rgds
Shraddha 


Juniper Business Use Only

-----Original Message-----
From: Peter Psenak <ppsenak@cisco.com> 
Sent: Wednesday, May 26, 2021 10:27 PM
To: Tony Li <tony.li@tony.li>li>; Ketan Jivan Talaulikar <ketant@cisco.com>
Cc: lsr@ietf.org; draft-hegde-lsr-flex-algo-bw-con@ietf.org; Acee Lindem (acee) <acee=40cisco.com@dmarc.ietf.org>
Subject: Re: [Lsr] LSR WG Adoption Poll for "Flexible Algorithms: Bandwidth, Delay, Metrics and Constraints" - draft-hegde-lsr-flex-algo-bw-con-02

[External Email. Be cautious of content]


Hi Tony, Ketan,

On 26/05/2021 18:40, Tony Li wrote:

>> */[KT] Generic Metric is used for the links. When we get to the 
>> computation of inter-area or external routes, we will need to get 
>> into FAPM. The draft at a minimum should discuss the applicability of 
>> the Generic Metric and its use as FAPM. Now, if we do make the 
>> Generic Metric size variable (as suggested above), then we will 
>> likely need a new TLV for a variable size FAPM equivalent?/*
>
>
> We would need a new TLV regardless of the metric size as the FAPM TLV 
> only carries the default metric. We are not proposing that TLV at this 
> time. That’s future work.

we only need the new TLV to carry FAPM if we make the Generic Metric's size variable. If we keep it fixed size, we should be fine with the existing FAPM.


thanks,
Peter
>
> Tony
>