Re: [Teas] FW: New Version Notification for draft-bestbar-teas-ns-packet-01.txt
John E Drake <jdrake@juniper.net> Sun, 07 February 2021 20:42 UTC
Return-Path: <jdrake@juniper.net>
X-Original-To: teas@ietfa.amsl.com
Delivered-To: teas@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 668003A12E2; Sun, 7 Feb 2021 12:42:35 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.348
X-Spam-Level:
X-Spam-Status: No, score=-2.348 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.25, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=0.001, 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=s8nwE5tr; dkim=pass (1024-bit key) header.d=juniper.net header.b=FbPrLYJN
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 0w-5oDbuJvAh; Sun, 7 Feb 2021 12:42:31 -0800 (PST)
Received: from mx0a-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 831183A1271; Sun, 7 Feb 2021 12:42:31 -0800 (PST)
Received: from pps.filterd (m0108159.ppops.net [127.0.0.1]) by mx0a-00273201.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 117KeOfT021158; Sun, 7 Feb 2021 12:42:31 -0800
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 : mime-version; s=PPS1017; bh=IEI6PPjUfvrf42GHsu9NK+ggE2l18CyUWx26ZToJato=; b=s8nwE5trxb2MXhgUVUav2fkHWbvKq2Mp9m9pViG0JwCTa1ivC3Tz9HelI+VFSexSv8Ks Tg1a5WNMhQtf8+bi539qmi6dfVRxvzpeaSaQ6u31OxHOEr/ZVZIcU0rFzgIsig03DZM4 Iazg3dNGOt3YfYxoXYW7Bhk0NOYNiZw4j4R+PFfMuaiGNPTQy0nBpQty/kJSMj2cDtQv 62xLHmNgaqPRu5F2hrC42gTA2zH3NXyzxFsY6mb9WQ5Wt0Wl+DeNjMpVTe/ovdk//IUa jALmQq8lVEgpraOdGrxsZs+REXSRNcBsRFLJU0Dw02LCErHCDeyTumgr7eZE9IVvW9Kl oQ==
Received: from nam02-sn1-obe.outbound.protection.outlook.com (mail-sn1nam02lp2053.outbound.protection.outlook.com [104.47.36.53]) by mx0a-00273201.pphosted.com with ESMTP id 36hsy0hr63-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sun, 07 Feb 2021 12:42:30 -0800
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Q6RTauILVBmqATR4BuiQMjJZkqKwTkBACCKv7pOpJa30MbLxnxF+WbuKRPumrnLfDK23bBb1MElUQJrpwSo67P/seryicXpvuZmPL8OHC6uPl6PHclYFUHHhfWVdaFVNqe2aQteZyslgOEX08RRTRtdTaAzti/Edyd4aKMcRq+WEEKQs1327NkbwJaxCmm40/bAmwv66JeJxworpsVSCGi0ASd/Kzk9bbZsNTjONH+Fjh2lEWgsUZf5lr6FeiTWMpqM2QKMoAbOwVruZzf6jdPTHtyZXM4400cz5Rqze0vPOUCYMXmrd82D4nnfZ5YofmxDxqj0QJbTVD/sCKZY7tQ==
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=IEI6PPjUfvrf42GHsu9NK+ggE2l18CyUWx26ZToJato=; b=O2wJPsdzKd42HF8A/5eNbLnGul0ZVSpdlG36oLHiJE4jzO8YREou6T2JDJNEmvi27OI3eDzdOr2iloIwriFbX8OAJUuDAc5AcSoIZppDhE00WB0VEGzXZhMKJB129pH/PwEm1b2IVpBYit/nybNLbJQLWZzrF0ibS2TFIfrlHjLbkSQYt0wp/ZdXvtmBX4Zfl9L7E+x7alKNMJP/JG3NPNobbY5JM4noJsLCAk/0GXlyNKVLTGHaPkLQHuglVP6rSE/K1kFd2uatq3VGIl7nohm31cUzGF8zJUQZ0h0+na0Wu2Rsdwluyxl84IFLg99I4xAnYbTlowvn+VsPStBMqQ==
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=IEI6PPjUfvrf42GHsu9NK+ggE2l18CyUWx26ZToJato=; b=FbPrLYJNsb1To5z5G6D58f2fLiSi6fVlwQA5HboZS6Ip9P8rgT3OEy6UvLn8bD/yAnlQ30oga7Vps3LmvU7StKTDwl3MJ21ZPB6xclANbj6NltnI1T3DIV85Du+oSjihHqKpAVvBuu0CzZ8WntSgAVzcLJuX5jpPjQTYlmJStYw=
Received: from (2603:10b6:208:e3::23) by MN2PR05MB6110.namprd05.prod.outlook.com (2603:10b6:208:c5::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3825.8; Sun, 7 Feb 2021 20:42:25 +0000
Received: from MN2PR05MB6623.namprd05.prod.outlook.com ([fe80::15d:9352:e16c:49ab]) by MN2PR05MB6623.namprd05.prod.outlook.com ([fe80::15d:9352:e16c:49ab%7]) with mapi id 15.20.3825.030; Sun, 7 Feb 2021 20:42:25 +0000
From: John E Drake <jdrake@juniper.net>
To: Igor Bryskin <i_bryskin=40yahoo.com@dmarc.ietf.org>, "Joel M. Halpern" <jmh@joelhalpern.com>
CC: TEAS WG <teas@ietf.org>
Thread-Topic: [Teas] FW: New Version Notification for draft-bestbar-teas-ns-packet-01.txt
Thread-Index: AQHW2JI4709Whsx1uESX2SR1iw29s6oDJA6AgERhtYCAATeYgIAERYcAgAAuEACAACRzgIAABIaAgAAOggCAAAVdAA==
Date: Sun, 07 Feb 2021 20:42:25 +0000
Message-ID: <MN2PR05MB6623AD4E25E56F0B655158B0C7B09@MN2PR05MB6623.namprd05.prod.outlook.com>
References: <160866255058.12375.3624366295025144530@ietfa.amsl.com> <B5853097-0690-45E9-9123-6F74FBCC4F03@juniper.net> <CABNhwV1u=iiK_2PQTKCquDbVwXanbTfB7U5GEzNRcgNY=iHhqQ@mail.gmail.com> <CA+YzgTvrk7bXDzyChjy1HORbAdb6XWLhaWpZP=gTbXUhTs3+3Q@mail.gmail.com> <BN6PR16MB1683FD38A7080E2BDAC114B0A0B09@BN6PR16MB1683.namprd16.prod.outlook.com> <CA+YzgTuqj7W7=oz3M1m7Pys9P5xSPm9+QCA1WRPiYUoyBhbWDQ@mail.gmail.com> <BN6PR16MB1683185500A8DF1FDE745D6FA0B09@BN6PR16MB1683.namprd16.prod.outlook.com>, <c1870f42-f7ab-9e09-a0a0-2125469c4fc8@joelhalpern.com> <BN6PR16MB1683FAFC90E125D756F0F466A0B09@BN6PR16MB1683.namprd16.prod.outlook.com>
In-Reply-To: <BN6PR16MB1683FAFC90E125D756F0F466A0B09@BN6PR16MB1683.namprd16.prod.outlook.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
dlp-product: dlpe-windows
dlp-version: 11.6.0.76
dlp-reaction: no-action
msip_labels: MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Enabled=true; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_SetDate=2021-02-07T20:42:23Z; 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=c4edd75a-c59d-4853-8a88-97845c1e1b71; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_ContentBits=2
authentication-results: dmarc.ietf.org; dkim=none (message not signed) header.d=none; dmarc.ietf.org; dmarc=none action=none header.from=juniper.net;
x-originating-ip: [96.235.63.100]
x-ms-publictraffictype: Email
x-ms-office365-filtering-ht: Tenant
x-ms-office365-filtering-correlation-id: 9ca498b2-c1a9-4c8a-ddec-08d8cba8e05e
x-ms-traffictypediagnostic: MN2PR05MB6110:
x-microsoft-antispam-prvs: <MN2PR05MB611068A9041D5EA4F9035D39C7B09@MN2PR05MB6110.namprd05.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:7219;
x-ms-exchange-senderadcheck: 1
x-microsoft-antispam: BCL:0;
x-microsoft-antispam-message-info: Txz9e0J4JSGW0kqcCv7YMW9o/mpr0i2goRZa81j9+bIzIunxLhTB1PTvJojUUQ/PKEDOHNqIRsIKAJRjZlL+hgqg3kf3eno+Cqw6qRhcpgDjKLmzSSCYPXSlVe2y5catT3cFHSqy1QPlUcCk72krpSFXp4aKpQtrC5aLbJaA/QXbZbEhLMMWJ4qayrrIq+lFRmAsmx51OTejpxalCLBff1BLGBTvkQ4jG3NZgbSq9idMk3xmQiVykK0p8fbCx1roYKu1MTdKu1oFirVD2O+kABqZPGbj+LnDv8aV7cm5VoDmSbEGsENVJGSE0BDvMLg/BicURnRyn5lChoh04xwPcSNey17Wl6+x11DeiY/ngzSvUUQns8W9tISGKb6FkS0Wkj2OTRaFivGVZjO6N2sKnbA/ff1dbt8gua4pFwqWQUyAyTKrhuKr9BC6JdSq70eQU5eeeEkhXKXyasXkbIoFQS42dlOiYi+uqUnUZ/5IULiW0DpWVu+Fk+u0j9aKE/St2gac9Jv7xPYynhROlsfTaSEC3tMxAI63z3g1Bfec/Vy7+WExEb3ND9qSSBOmyqI3QOT2iydM8TuknHNTF+Hefunsy1Yr9rp7qVGd5nhcg0o=
x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:MN2PR05MB6623.namprd05.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(376002)(396003)(136003)(346002)(366004)(39860400002)(5660300002)(7696005)(316002)(8936002)(110136005)(30864003)(8676002)(52536014)(55016002)(71200400001)(83380400001)(26005)(33656002)(45080400002)(76116006)(66446008)(66476007)(64756008)(66556008)(66946007)(966005)(6506007)(86362001)(53546011)(9686003)(66574015)(478600001)(2906002)(186003)(166002)(4326008)(15650500001); DIR:OUT; SFP:1102;
x-ms-exchange-antispam-messagedata: OhNG3f6UFjWX2wp4rBGwHoYFQGgVCy2avzKrK4N2fT4L4Y46SkEE384JAR3KYmMeRiCjE5H2nQRjmLuaVXI5ASCPrNGK7ZkYVc6UC/FahlDX/vrQSr9kdf3HbLj2ydIScwBAvXlLJ/m5VY18SCxmHRMYHOo7LtBdgo4P/31tMTN6xZ1E+knppFn4Z6xo04Z212w8RXMl3rdcLgYbFRoElZ3ObuQYNZjFhzXd5P65Vor1gxtSLWTggS+3CiiA9l+9FDn+tbwkIvH+/+J3vY8IvlaFR/y1/Pw14FLeBikwjNNGEbWnbOLJ/j74ToL8QbA6C8oxILEXwap7xioTwVLw7QPIfGyPRKBNIsgr4MIgS6T6Y47pY26Qu1WeVo2X+31LYTIbU0SfcW+EsXpCzhQ2uv65Tan2nlEqDL3Y0x7deDfqVwCeBn5C7pQr23EVBfVWE2ULQehf/wi1feKj9UGl/WIxnhnHZEJM3WtgYjDG4sQ3q+2Hcw0FRj3zxXcDVKEyRTYgEIfCnF95wS6p/zlyjQB1NHKe3lGswhXhxwuaHryGWfAbbWNXF0GgTRuBZvOkivfvBdRCY9QHDr3vrA4BTUVCEEQ2amS5NXRoZgXPFBO92/62uwoAOu3Xq2li8JSeLhwm8Ft2Y6eVLtkv0FXrgV/BUXlnbzovaVICy8SraIN2Vu6/NAA79vzmoBQSW8oreu2oJ23o5V9FuVtP9RxTrbbKHeQBj8uEdY7/N1atKEq8VRWXOOHtZqcpN1eBg9KrcIs50t9Qlkn3v8a8QdvmrQsR/v9ucrUGkr5r4qveH5Zn/DsgFJ0g9IIFqAZ0udVAhgcQWf49eAno/eox6KWeF7qI4uvwNUCzTcpi+1VHWVzfCxCVETf1HCwod9WOUaFinwaMzK4iPSiuP0AB3hdxDGIRB62ltKWYpqtkddp5XfG/tynFCU9s6qaPXpvFVJsMhNmijrXkKlEPdqy+m7L9zfMlSYvKtKgO+dNLkbCR935I+ul7R3rr1M4ipE1Ppbk9nsVWlf+eV3QQD6gI+kSfELGnegjnyslGacjkIYJIqhZ5L2ei/kfeSWPuREMV3vvG9ZYADg2edE/I+n1ujmnjV1gFcwTMX/jLmTaGidSlx2cdFNEbia2tUiOI8IbpG9CoE+kTzMqv/prBouigS1PbkHFx6ApykwaPxUmf2Jjeq/z79EQ4lXfATwkWKtZh/O27cJ+dfJWVCuSAsFaaGa3RagAKhGgIJt2eYIIqUgIqPGi/eUCuO41WbdRp2upKNgKIFvB7fPPoiSHb4sw8Oz+fjRaYrRGonu4McsEDuv/Mpt1RDxwf9tejRfyDFCiCwyqe
x-ms-exchange-transport-forked: True
Content-Type: multipart/alternative; boundary="_000_MN2PR05MB6623AD4E25E56F0B655158B0C7B09MN2PR05MB6623namp_"
MIME-Version: 1.0
X-OriginatorOrg: juniper.net
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: MN2PR05MB6623.namprd05.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 9ca498b2-c1a9-4c8a-ddec-08d8cba8e05e
X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Feb 2021 20:42:25.1243 (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: 2G8P6ixBwL9UOfPRf32KNTTGJr0Zt1bsUbZstjwItkbTzwaCGmB7f96NklSboNadRNtPsxgXRJUDQiPIN/d59g==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR05MB6110
X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369, 18.0.737 definitions=2021-02-07_11:2021-02-05, 2021-02-07 signatures=0
X-Proofpoint-Spam-Details: rule=outbound_spam_notspam policy=outbound_spam score=0 suspectscore=0 mlxscore=0 bulkscore=0 spamscore=0 malwarescore=0 clxscore=1011 phishscore=0 adultscore=0 mlxlogscore=999 lowpriorityscore=0 priorityscore=1501 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102070150
Archived-At: <https://mailarchive.ietf.org/arch/msg/teas/ZedBgOBH8DyB9VHjYnGOZ0WcKGs>
Subject: Re: [Teas] FW: New Version Notification for draft-bestbar-teas-ns-packet-01.txt
X-BeenThere: teas@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Traffic Engineering Architecture and Signaling working group discussion list <teas.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/teas>, <mailto:teas-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/teas/>
List-Post: <mailto:teas@ietf.org>
List-Help: <mailto:teas-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/teas>, <mailto:teas-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sun, 07 Feb 2021 20:42:36 -0000
Igor, Please see: https://datatracker.ietf.org/doc/html/draft-ietf-teas-ietf-network-slice-definition-00 and https://datatracker.ietf.org/doc/html/draft-nsdt-teas-ns-framework-05. I have always considered a network slice to be a VPN with QoS requirements; i.e., it is a set of endpoints with connectivity constructs (MP2MP, P2MP, P2P) between subsets of theses endpoints, and QoS requirements for each sender to each connectivity construct. How the network delivers a VPN with QoS requirements is its own business. Yours Irrespectively, John Juniper Business Use Only From: Teas <teas-bounces@ietf.org> On Behalf Of Igor Bryskin Sent: Sunday, February 7, 2021 3:07 PM To: Igor Bryskin <i_bryskin=40yahoo.com@dmarc.ietf.org>; Joel M. Halpern <jmh@joelhalpern.com> Cc: TEAS WG <teas@ietf.org> Subject: Re: [Teas] FW: New Version Notification for draft-bestbar-teas-ns-packet-01.txt [External Email. Be cautious of content] Thanks Joel, So, you are saying that a slice client has no say as to how its packets forwarded / treated by the network. There is no even need to expose the slice topology in some form to the client, because the client can't do much with such information, correct? Also, can you envision a use case when a slice topological elements may have independent name space? Thanks, Igor Get Outlook for Android<https://urldefense.com/v3/__https:/aka.ms/ghei36__;!!NEt6yMaO-gk!S_VvA6mf2AmOIWFf6rkeEuaobWVZxh3S2-X2ThtuXv-jPlkHS-PbYXuKCWk0toY$> ________________________________ From: Teas <teas-bounces@ietf.org<mailto:teas-bounces@ietf.org>> on behalf of Joel M. Halpern <jmh@joelhalpern.com<mailto:jmh@joelhalpern.com>> Sent: Sunday, February 7, 2021 2:15:01 PM To: Igor Bryskin <i_bryskin=40yahoo.com@dmarc.ietf.org<mailto:i_bryskin=40yahoo.com@dmarc.ietf.org>> Cc: TEAS WG <teas@ietf.org<mailto:teas@ietf.org>> Subject: Re: [Teas] FW: New Version Notification for draft-bestbar-teas-ns-packet-01.txt I disagree. The edge of the domain receives and classifies the packet. It can use any information it can to decide what aggregate the slice belongs in. Once that is done, the IETF network slice implementation network should simply obey the instruction as to what aggregate the packet belongs in. The carrying network does not need to care about the external network slices. And by avoiding such concern, all the parts scale better and we get a clean division of responsibility. Yours, Joel On 2/7/2021 1:58 PM, Igor Bryskin wrote: > Pavan, > > I assume: > - that a node, generally speaking, needs to make a forwarding decision > based on the packet's slice topology; > - said topology may change dynamically, and so is the slice membership > in the slice aggregate. > Therefore. It is better, in my opinion, to carry slice ID in packets and > let nodes (re-)define slice aggregate membership independently. > > Igor > > Get Outlook for Android <https://aka.ms/ghei36<https://urldefense.com/v3/__https:/aka.ms/ghei36__;!!NEt6yMaO-gk!S_VvA6mf2AmOIWFf6rkeEuaobWVZxh3S2-X2ThtuXv-jPlkHS-PbYXuKCWk0toY$>> > > ------------------------------------------------------------------------ > *From:* Teas <teas-bounces@ietf.org<mailto:teas-bounces@ietf.org>> on behalf of Vishnu Pavan Beeram > <vishnupavan@gmail.com<mailto:vishnupavan@gmail.com>> > *Sent:* Sunday, February 7, 2021, 11:48 AM > *To:* Igor Bryskin > *Cc:* Tarek Saad; Gyan Mishra; TEAS WG; > draft-bestbar-teas-ns-packet@ietf.org<mailto:draft-bestbar-teas-ns-packet@ietf.org> > *Subject:* Re: [Teas] FW: New Version Notification for > draft-bestbar-teas-ns-packet-01.txt > > Igor, Hi! > > Please see inline. > > Regards, > -Pavan (as a co-author) > > On Sun, Feb 7, 2021 at 8:03 AM Igor Bryskin <i_bryskin@yahoo.com <mailto:i_bryskin@yahoo.com%20%0b>> <mailto:i_bryskin@yahoo.com>> wrote: > > Gyan and Pavan, > > When a packet arrives at a node participating in a multi-slice > network, the packet needs to be treated and *routed* according to > the slice it belongs to. Because the physical data link over which > the packet has arrived could be used by more than one slices, the > packet needs to carry somewhere the slice ID. IMHO because the slice > topology may dynamically change, it would be simpler and cleaner to > carry the slice ID, rather than slice aggregate ID, as suggested by > the draft. > > > [VPB] The packet needs to carry some identifier that would help > determine the specific forwarding treatment (scheduling and drop policy) > to be applied before the packet is forwarded further (this is not needed > in the "Control Plane Slice Policy" mode). In the model that is proposed > in the draft, we have one or more IETF Network Slices mapped onto a > single slice aggregate and each slice aggregate has a specific Per Hop > Behavior associated with it. In other words, the packet needs to carry > an identifier that maps onto the slice aggregate. Also note that in the > proposed model, multiple slice aggregates can map onto the same topology. > > > I also agree with Gyan that the COS field may not be the best choice > for the task. > > > [VPB] I'm not sure what you mean by the COS field here. If there is a > need to allow differentiation of forwarding treatments for packets > within a slice aggregate, the slice aggregate traffic may further carry > a Diffserv Class Selector. > > > Regards, > Igor > > Get Outlook for Android <https://aka.ms/ghei36<https://urldefense.com/v3/__https:/aka.ms/ghei36__;!!NEt6yMaO-gk!S_VvA6mf2AmOIWFf6rkeEuaobWVZxh3S2-X2ThtuXv-jPlkHS-PbYXuKCWk0toY$>> > ------------------------------------------------------------------------ > *From:* Teas <teas-bounces@ietf.org <mailto:teas-bounces@ietf.org>> > on behalf of Vishnu Pavan Beeram <vishnupavan@gmail.com <mailto:vishnupavan@gmail.com%0b>> <mailto:vishnupavan@gmail.com>> > *Sent:* Thursday, February 4, 2021 3:49:37 PM > *To:* Gyan Mishra <hayabusagsm@gmail.com <mailto:hayabusagsm@gmail.com>> > *Cc:* Tarek Saad <tsaad=40juniper.net@dmarc.ietf.org <mailto:tsaad=40juniper.net@dmarc.ietf.org%0b>> <mailto:40juniper.net@dmarc.ietf.org>>; > draft-bestbar-teas-ns-packet@ietf.org<mailto:draft-bestbar-teas-ns-packet@ietf.org> > <mailto:draft-bestbar-teas-ns-packet@ietf.org> > <draft-bestbar-teas-ns-packet@ietf.org <mailto:draft-bestbar-teas-ns-packet@ietf.org%0b>> <mailto:draft-bestbar-teas-ns-packet@ietf.org>>; TEAS WG > <teas@ietf.org <mailto:teas@ietf.org>> > *Subject:* Re: [Teas] FW: New Version Notification for > draft-bestbar-teas-ns-packet-01.txt > Gyan, Hi! > > Thanks for taking the time to review the document. Please see inline > for responses (prefixed VPB). > > Regards, > -Pavan (as a co-author) > > On Wed, Feb 3, 2021 at 8:14 PM Gyan Mishra <hayabusagsm@gmail.com <mailto:hayabusagsm@gmail.com%0b>> <mailto:hayabusagsm@gmail.com>> wrote: > > > > Dear authors > > I reviewed the draft and have some comments. > > I noticed the draft name and throughout the document it > mentions Network Slice in IP/MPLS networks and wonder if it > would be more appropriate to say network slice in SR/MPLS > networks. As NS involves traffic steering either RSVP-TE or SR > steering my thoughts are it would be appropriate > > > [VPB] I’m not sure if I understood the comment. As you are aware, > Segment Routing can be instantiated on MPLS or IPv6 dataplanes. The > solution proposed in draft-bestbar-teas-ns-packet is intended for > realizing network slicing in IP(v4/v6) / MPLS networks. The proposed > solution works with any type of path control technology (e.g.RSVP-TE > paths, SR paths, FlexAlgo paths). If you are interested in how the > proposed solution works in SR deployments, please refer to > draft-bestbar-spring-scalable-ns. > > > This drafts main focus it seems is an example of NS using QOS CS > selector marking Differential service to be used for network > slicing. > > > > [VPB] Not really. The focus in this document is on the Slice Policy > construct which includes rules that control the following slice > aggregate attributes: > - Data plane policies (Slice Selectors, QOS profiles) > - Control plane policies (Guaranteed BW, Reservation priorities) > - Topology membership policies (Customized/Pre-defined) > > There are 3 types of Slice Policy Modes depending on how/where the > shared network resources are partitioned – > (1) Data Plane Slice Policy Mode > (2) Control Plane Slice Policy Mode > (3) Data and Control Plane Slice Policy Mode > > In modes (1) and (3), a Slice Selector (SS) is carried in the packet > to identify the slice aggregate and apply specific forwarding > treatment (scheduling treatment and drop probability). But this is > not needed in mode (2). > > In my mind QOS is completely orthogonal to the concept of > network slicing. QOS involves shared resources and traffic > classification and scheduling based on shared pipe resources > which is completely orthogonal to network slicing which is a > cross section of underlying resources involving a degree of > isolation during provisioning to meet a customer SLA. QOS has > been around for a long time and the big downside to QOS is that > it is independent of underlying network resources. > > When QOS PHB scheduling occurs based on CS AF or EF selector, > packet are marked at the edge of trust boundary and PHB hop by > hop scheduled matching dscp value providing bandwidth guarantees > for profile traffic at or below the scheduling bandwidth which > is based on the shared physical link. > > > > [VPB] As noted above, it is certainly possible for a network slicing > solution to be put together without requiring a specific > per-hop-behavior to be applied on packets belonging to a slice > aggregate (we refer to this as “Control Plane Slice Policy Mode” - > Section 4.2 of draft-bestbar-teas-ns-packet-01). However, there are > cases where the Slice service requires strict QOS guarantees and > differentiation from other traffic – this is where the Data Plane > Slice Policy Mode comes into play. > > Kind Regards > > Gyan > > > On Tue, Dec 22, 2020 at 1:59 PM Tarek Saad > <tsaad=40juniper.net@dmarc.ietf.org <mailto:tsaad=40juniper.net@dmarc.ietf.org%0b>> <mailto:40juniper.net@dmarc.ietf.org>> wrote: > > Hi WG,____ > > __ __ > > We have published a new revision of this draft (just in time > for your holidays reading).____ > > The changes include:____ > > * additional co-authors have joined____ > * introduction of new terms “slice policy” and “slice > aggregate”____ > * editorial nits to align with new terms introduced____ > > __ __ > > As usual, reviews and comments are welcome.____ > > __ __ > > Regards,____ > > Tarek (on behalf of co-authors)____ > > __ __ > > __ __ > > On 12/22/20, 1:42 PM, "internet-drafts@ietf.org > <mailto:internet-drafts@ietf.org>" <internet-drafts@ietf.org <mailto:internet-drafts@ietf.org%0b>> <mailto:internet-drafts@ietf.org>> wrote:____ > > __ __ > > [External Email. Be cautious of content]____ > > __ __ > > __ __ > > A new version of I-D, > draft-bestbar-teas-ns-packet-01.txt____ > > has been successfully submitted by Tarek Saad and > posted to the____ > > IETF repository.____ > > __ __ > > Name: draft-bestbar-teas-ns-packet____ > > Revision: 01____ > > Title: Realizing Network Slices in IP/MPLS > Networks____ > > Document date: 2020-12-22____ > > Group: Individual Submission____ > > Pages: 27____ > > URL: > https://urldefense.com/v3/__https://www.ietf.org/archive/id/draft-bestbar-teas-ns-packet-01.txt__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPzvuhQQRw$<https://urldefense.com/v3/__https:/www.ietf.org/archive/id/draft-bestbar-teas-ns-packet-01.txt__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPzvuhQQRw$> > <https://urldefense.com/v3/__https://www.ietf.org/archive/id/draft-bestbar-teas-ns-packet-01.txt__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPzvuhQQRw$<https://urldefense.com/v3/__https:/www.ietf.org/archive/id/draft-bestbar-teas-ns-packet-01.txt__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPzvuhQQRw$>>____ > > Status: > https://urldefense.com/v3/__https://datatracker.ietf.org/doc/draft-bestbar-teas-ns-packet/__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPwWnIEvoQ$<https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/draft-bestbar-teas-ns-packet/__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPwWnIEvoQ$> > <https://urldefense.com/v3/__https://datatracker.ietf.org/doc/draft-bestbar-teas-ns-packet/__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPwWnIEvoQ$<https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/draft-bestbar-teas-ns-packet/__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPwWnIEvoQ$>>____ > > Htmlized: > https://urldefense.com/v3/__https://datatracker.ietf.org/doc/html/draft-bestbar-teas-ns-packet__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPxBddbTdg$<https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-bestbar-teas-ns-packet__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPxBddbTdg$> > <https://urldefense.com/v3/__https://datatracker.ietf.org/doc/html/draft-bestbar-teas-ns-packet__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPxBddbTdg$<https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-bestbar-teas-ns-packet__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPxBddbTdg$>>____ > > Htmlized: > https://urldefense.com/v3/__https://tools.ietf.org/html/draft-bestbar-teas-ns-packet-01__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPznNKoLDg$<https://urldefense.com/v3/__https:/tools.ietf.org/html/draft-bestbar-teas-ns-packet-01__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPznNKoLDg$> > <https://urldefense.com/v3/__https://tools.ietf.org/html/draft-bestbar-teas-ns-packet-01__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPznNKoLDg$<https://urldefense.com/v3/__https:/tools.ietf.org/html/draft-bestbar-teas-ns-packet-01__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPznNKoLDg$>>____ > > Diff: > https://urldefense.com/v3/__https://www.ietf.org/rfcdiff?url2=draft-bestbar-teas-ns-packet-01__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPzsN9oeaw$<https://urldefense.com/v3/__https:/www.ietf.org/rfcdiff?url2=draft-bestbar-teas-ns-packet-01__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPzsN9oeaw$> > <https://urldefense.com/v3/__https://www.ietf.org/rfcdiff?url2=draft-bestbar-teas-ns-packet-01__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPzsN9oeaw$<https://urldefense.com/v3/__https:/www.ietf.org/rfcdiff?url2=draft-bestbar-teas-ns-packet-01__;!!NEt6yMaO-gk!UopixISsH-6laFtUNIg5vIaLsXzFthS8C65TCDCRk-5ayO6AAa-8IPzsN9oeaw$>>____ > > __ __ > > Abstract:____ > > Network slicing provides the ability to partition a > physical network____ > > into multiple logical networks of varying sizes, > structures, and____ > > functions so that each slice can be dedicated to > specific services or____ > > customers. Network slices need to operate in > parallel while____ > > providing slice elasticity in terms of network > resource allocation.____ > > The Differentiated Service (Diffserv) model allows > for carrying____ > > multiple services on top of a single physical > network by relying on____ > > compliant nodes to apply specific forwarding > treatment (scheduling____ > > and drop policy) on to packets that carry the > respective Diffserv____ > > code point. This document proposes a solution based > on the Diffserv____ > > model to realize network slicing in IP/MPLS > networks.____ > > __ __ > > __ __ > > __ __ > > __ __ > > Please note that it may take a couple of minutes from > the time of submission____ > > until the htmlized version and diff are available at > tools.ietf.org <http://tools.ietf.org<https://urldefense.com/v3/__http:/tools.ietf.org__;!!NEt6yMaO-gk!S_VvA6mf2AmOIWFf6rkeEuaobWVZxh3S2-X2ThtuXv-jPlkHS-PbYXuKBtnAFoU$>>.____ > > __ __ > > The IETF Secretariat____ > > __ __ > > __ __ > > > Juniper Business Use Only > > _______________________________________________ > Teas mailing list > Teas@ietf.org<mailto:Teas@ietf.org> <mailto:Teas@ietf.org> > https://www.ietf.org/mailman/listinfo/teas<https://urldefense.com/v3/__https:/www.ietf.org/mailman/listinfo/teas__;!!NEt6yMaO-gk!S_VvA6mf2AmOIWFf6rkeEuaobWVZxh3S2-X2ThtuXv-jPlkHS-PbYXuK9MiU5Bg$> > <https://www.ietf.org/mailman/listinfo/teas<https://urldefense.com/v3/__https:/www.ietf.org/mailman/listinfo/teas__;!!NEt6yMaO-gk!S_VvA6mf2AmOIWFf6rkeEuaobWVZxh3S2-X2ThtuXv-jPlkHS-PbYXuK9MiU5Bg$>> > > -- > > <http://www.verizon.com/<https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yMaO-gk!S_VvA6mf2AmOIWFf6rkeEuaobWVZxh3S2-X2ThtuXv-jPlkHS-PbYXuKxK95nyI$>> > > *Gyan Mishra* > > /Network Solutions A//rchitect / > > /M 301 502-1347 > 13101 Columbia Pike > /Silver Spring, MD > > > _______________________________________________ > Teas mailing list > Teas@ietf.org<mailto:Teas@ietf.org> <mailto:Teas@ietf.org> > https://www.ietf.org/mailman/listinfo/teas<https://urldefense.com/v3/__https:/www.ietf.org/mailman/listinfo/teas__;!!NEt6yMaO-gk!S_VvA6mf2AmOIWFf6rkeEuaobWVZxh3S2-X2ThtuXv-jPlkHS-PbYXuK9MiU5Bg$> > <https://www.ietf.org/mailman/listinfo/teas<https://urldefense.com/v3/__https:/www.ietf.org/mailman/listinfo/teas__;!!NEt6yMaO-gk!S_VvA6mf2AmOIWFf6rkeEuaobWVZxh3S2-X2ThtuXv-jPlkHS-PbYXuK9MiU5Bg$>> > > > > _______________________________________________ > Teas mailing list > Teas@ietf.org<mailto:Teas@ietf.org> > https://www.ietf.org/mailman/listinfo/teas<https://urldefense.com/v3/__https:/www.ietf.org/mailman/listinfo/teas__;!!NEt6yMaO-gk!S_VvA6mf2AmOIWFf6rkeEuaobWVZxh3S2-X2ThtuXv-jPlkHS-PbYXuK9MiU5Bg$> > _______________________________________________ Teas mailing list Teas@ietf.org<mailto:Teas@ietf.org> https://www.ietf.org/mailman/listinfo/teas<https://urldefense.com/v3/__https:/www.ietf.org/mailman/listinfo/teas__;!!NEt6yMaO-gk!S_VvA6mf2AmOIWFf6rkeEuaobWVZxh3S2-X2ThtuXv-jPlkHS-PbYXuK9MiU5Bg$>
- [Teas] FW: New Version Notification for draft-bes… Tarek Saad
- Re: [Teas] FW: New Version Notification for draft… Gyan Mishra
- Re: [Teas] FW: New Version Notification for draft… Vishnu Pavan Beeram
- Re: [Teas] FW: New Version Notification for draft… Igor Bryskin
- Re: [Teas] FW: New Version Notification for draft… Vishnu Pavan Beeram
- Re: [Teas] FW: New Version Notification for draft… Igor Bryskin
- Re: [Teas] FW: New Version Notification for draft… Joel M. Halpern
- Re: [Teas] FW: New Version Notification for draft… Joel M. Halpern
- Re: [Teas] FW: New Version Notification for draft… Igor Bryskin
- Re: [Teas] FW: New Version Notification for draft… John E Drake
- Re: [Teas] FW: New Version Notification for draft… Joel M. Halpern
- Re: [Teas] FW: New Version Notification for draft… Igor Bryskin
- Re: [Teas] FW: New Version Notification for draft… Joel Halpern Direct
- Re: [Teas] FW: New Version Notification for draft… John E Drake
- Re: [Teas] FW: New Version Notification for draft… John E Drake
- Re: [Teas] FW: New Version Notification for draft… Adrian Farrel
- Re: [Teas] FW: New Version Notification for draft… Dongjie (Jimmy)
- Re: [Teas] FW: New Version Notification for draft… Vishnu Pavan Beeram
- Re: [Teas] FW: New Version Notification for draft… Young Lee
- Re: [Teas] FW: New Version Notification for draft… Igor Bryskin
- Re: [Teas] FW: New Version Notification for draft… John E Drake
- Re: [Teas] FW: New Version Notification for draft… Gyan Mishra