[Teas] Disposition of draft-ietf-teas-ietf-network-slice-definition-00
John E Drake <jdrake@juniper.net> Wed, 31 March 2021 15:44 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 16CEF3A2C7E for <teas@ietfa.amsl.com>; Wed, 31 Mar 2021 08:44:20 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.099
X-Spam-Level:
X-Spam-Status: No, score=-2.099 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_BLOCKED=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=IwTtE9SV; dkim=pass (1024-bit key) header.d=juniper.net header.b=Z/FQ+apj
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 6XeDo_w1tY48 for <teas@ietfa.amsl.com>; Wed, 31 Mar 2021 08:44:15 -0700 (PDT)
Received: from mx0b-00273201.pphosted.com (mx0b-00273201.pphosted.com [67.231.152.164]) (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 6E0BA3A2C84 for <teas@ietf.org>; Wed, 31 Mar 2021 08:44:15 -0700 (PDT)
Received: from pps.filterd (m0108160.ppops.net [127.0.0.1]) by mx0b-00273201.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 12VFhnYc027513 for <teas@ietf.org>; Wed, 31 Mar 2021 08:44:14 -0700
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=juniper.net; h=from : to : subject : date : message-id : content-type : content-transfer-encoding : mime-version; s=PPS1017; bh=86Ps9qx8eJQPTFdOJCA9Mi5WN6FAOUoPkQTMp7gjXQU=; b=IwTtE9SVoxWb9h+Mlb8/hl/ofSelBcn83EIyfjQQJNjImwx4PfngocrWaYr6mx2m+qhY 4CqkE3qpHbeR+lUeP+BOiFGjgp8flKd1ByV542djGtV0IbJVBBZRBMN+zVhfc9vPJIs2 ElTZomfs1jPtTeW5tSKRP6gHkrAAlN+BVPEZsdydop9285nhf8yyBhv5f+dkvK5TMXxI kII3a1vZw/h9lGV+tBT+eVmIzxnM1Z6eiFaLT+fE45XoyHSv0oGEBfaV1ja0mrQfhMuQ 5y5sBSFgPm1FOi7ldnDxmll5ONs2MR8R8D8Rdn5ObTQb9evppZB1Sb4bmS0tZKsGAHRI uQ==
Received: from nam11-dm6-obe.outbound.protection.outlook.com (mail-dm6nam11lp2172.outbound.protection.outlook.com [104.47.57.172]) by mx0b-00273201.pphosted.com with ESMTP id 37mabka0cw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for <teas@ietf.org>; Wed, 31 Mar 2021 08:44:14 -0700
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=IIYyzzKX3qu6oAXkJCKn9ThUu4Oya4nBOJJom2EdGLrcnYC12dJDxIVWIU/busGjpjLdmEVbp3HqDaL0f8JkPq9Vn++kcLQd0y5T9u4wWR27cXrxx2MqTz67hadCcUqMlt6Vdc9j6n7LQZRJWY9f+4Gs0c226pZhq1rE/ZFA8FIEeHotDpd245rFnrpbgzke6kbIMV8Iv4ud+KfMMDvkV2sShVSFW0aBEaUR8q7GR1rP2pYxje0wqx1dXmYl2FfF5ZduyVpAfxO6IMvSCsa3Fkthyt7O5jyvv0Z4rJ7r9QRh1ScYiWGeq8/PU4ISYLnZBk1jFEULxUcWxrHQd0rArQ==
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=86Ps9qx8eJQPTFdOJCA9Mi5WN6FAOUoPkQTMp7gjXQU=; b=gfhdI6DtOXE8FMX9zfwW+jUO5MpDsuyabo06OUeav8Gk2Q95sKT60rZIEHwGcKqWjXbvU5yLllDem2XLNPPN62gQRGOjFH7D8SGxn7TeNNEhkcsavZQsywFt5L3uGXNawIy9YUPyP+mcGRXUhduYNNo4CHFOM77rfSC7Gsu+oAkcP8n6XIO0EDoqNMr0odWy/6julvO8XLOhyVbFS+OwQdX1FwPJxCHNSQ/cd92eTAQQTOAslN3bQClNtdlt4Pd2ICHMHSkPm4djS1MbkwIPEYyUWAlBDmt02TjQKfZHP7XTYvRQFNWvGkEhv++aqA/pR9LMCoQ9slMw7TRA5Ct2kg==
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=86Ps9qx8eJQPTFdOJCA9Mi5WN6FAOUoPkQTMp7gjXQU=; b=Z/FQ+apjBGW0fyJb+myzP1K8ypvJNCkLHkakmumdSxIp4aHgS6A8eO4wQf+aJJFcmbleT2lE5CD8unnJZaoYSN4lFQhLeJKP/XGKRl/Lzi6NRl1tfbVwz1S7fsKD0hJ+5WApFIUw4CpUbbzLlIiCAi+fh39EoZGrg7xTubl1kKU=
Received: from MN2PR05MB6623.namprd05.prod.outlook.com (2603:10b6:208:e3::23) by MN2PR05MB6558.namprd05.prod.outlook.com (2603:10b6:208:e3::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3999.16; Wed, 31 Mar 2021 15:44:09 +0000
Received: from MN2PR05MB6623.namprd05.prod.outlook.com ([fe80::dd68:b03e:ef13:6813]) by MN2PR05MB6623.namprd05.prod.outlook.com ([fe80::dd68:b03e:ef13:6813%7]) with mapi id 15.20.3999.026; Wed, 31 Mar 2021 15:44:09 +0000
From: John E Drake <jdrake@juniper.net>
To: "teas@ietf.org" <teas@ietf.org>
Thread-Topic: Disposition of draft-ietf-teas-ietf-network-slice-definition-00
Thread-Index: AdcmQuntk5w+Bk08QfKpMpfJ+8uYoQ==
Date: Wed, 31 Mar 2021 15:44:09 +0000
Message-ID: <MN2PR05MB66234D9E6C4F7792301731A8C77C9@MN2PR05MB6623.namprd05.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=2021-03-31T15:44:08Z; 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=a08f0ce7-946b-4d1a-a88b-df27c5acac27; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_ContentBits=2
authentication-results: ietf.org; dkim=none (message not signed) header.d=none;ietf.org; dmarc=none action=none header.from=juniper.net;
x-originating-ip: [66.129.241.11]
x-ms-publictraffictype: Email
x-ms-office365-filtering-ht: Tenant
x-ms-office365-filtering-correlation-id: 525c488e-ddb3-4b09-4361-08d8f45bd35f
x-ms-traffictypediagnostic: MN2PR05MB6558:
x-microsoft-antispam-prvs: <MN2PR05MB65589979AA4B7BE87274D7FBC77C9@MN2PR05MB6558.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:MN2PR05MB6623.namprd05.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(346002)(366004)(376002)(396003)(136003)(39860400002)(7696005)(55016002)(52536014)(2906002)(5660300002)(33656002)(6506007)(83380400001)(76116006)(71200400001)(26005)(8676002)(66946007)(66446008)(64756008)(66476007)(316002)(38100700001)(478600001)(8936002)(186003)(966005)(86362001)(9686003)(6916009)(66556008); DIR:OUT; SFP:1102;
x-ms-exchange-antispam-messagedata: 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
x-ms-exchange-transport-forked: True
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
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: 525c488e-ddb3-4b09-4361-08d8f45bd35f
X-MS-Exchange-CrossTenant-originalarrivaltime: 31 Mar 2021 15:44:09.7252 (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: 21yM2+GBNBis/2yjS7HBeglX0Mz64scZWonap8kmCqAIvrXExrHzkEVAzCZtoZwLVHXdEMoXl2G+1LlC0shYLA==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR05MB6558
X-Proofpoint-ORIG-GUID: hyybQEXjs0ZacSOJkKZu06ovEiNngTNM
X-Proofpoint-GUID: hyybQEXjs0ZacSOJkKZu06ovEiNngTNM
X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369, 18.0.761 definitions=2021-03-31_06:2021-03-31, 2021-03-31 signatures=0
X-Proofpoint-Spam-Details: rule=outbound_spam_notspam policy=outbound_spam score=0 clxscore=1015 spamscore=0 suspectscore=0 phishscore=0 adultscore=0 mlxscore=0 malwarescore=0 mlxlogscore=999 bulkscore=0 lowpriorityscore=0 impostorscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2103300000 definitions=main-2103310109
Archived-At: <https://mailarchive.ietf.org/arch/msg/teas/wJcyfiqLIqEkjgLDwE0wZRcBBJw>
Subject: [Teas] Disposition of draft-ietf-teas-ietf-network-slice-definition-00
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: Wed, 31 Mar 2021 15:44:20 -0000
Hi, Eric and I have been asked by the teas working group chairs to merge the subject draft into the framework draft: https://datatracker.ietf.org/doc/html/draft-ietf-teas-ietf-network-slice-framework-00. Our proposal is detailed below. Definition of IETF Network Slices draft-ietf-teas-ietf-network-slice-definition-01 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 *****JD The content of the two introductions will be merged 2. Terms and Abbreviations . . . . . . . . . . . . . . . . . . . 3 *****JD This will be a new section 2 in the Framework draft. The current section 2 of the Framework draft will be split between the new section 2 and possibly sections 3 and 4. 3. Definition and Scope of IETF Network Slice . . . . . . . . . 4 *****JD This section will be moved to the new section 2. 4. IETF Network Slice System Characteristics . . . . . . . . . . 4 *****JD This section will be moved to the new section 2 4.1. Objectives for IETF Network Slices . . . . . . . . . . . 5 *****JD This section will be split between the new section 2 and possibly sections 3 and 4. 4.1.1. Service Level Objectives . . . . . . . . . . . . . . 5 4.1.2. Minimal Set of SLOs . . . . . . . . . . . . . . . . . 5 4.1.3. Other Objectives . . . . . . . . . . . . . . . . . . 7 *****JD These sections will be moved to the new section 2. 4.2. IETF Network Slice Endpoints . . . . . . . . . . . . . . 7 *****JD This section will be moved to the new section 2 and will be updated to use the terminology agreed upon on the mailing list. A reference to RFC 4364's section 9 "Carriers' Carriers" (https://datatracker.ietf.org/doc/html/rfc4364#section-9) will be added. We will also note that the 'CE', 'attachment circuit', and 'PE' can all be virtualized. 4.2.1. IETF Network Slice Connectivity Types . . . . . . . . 9 *****JD This section will be moved to the new section 2. 4.3. IETF Network Slice Composition . . . . . . . . . . . . . 9 *****JD This section will be moved to the new section 2. Note that the non-definitional material in *all* of the preceding sections will be split between sections 3 and 4. Section 4 will become a generalized 'Applicability' section . 5. IETF Network Slice Structure . . . . . . . . . . . . . . . . 10 *****JD This section will be split between the new section 2 and possibly sections 3 and 4. 6. IETF Network Slice Stakeholders . . . . . . . . . . . . . . . 11 *****JD This section will be moved to section 4. 7. IETF Network Slice Controller Interfaces . . . . . . . . . . 12 *****JD This is covered in section 3.3. 8. Realizing IETF Network Slice . . . . . . . . . . . . . . . . 12 *****JD This is covered in section 3.5. 9. Isolation in IETF Network Slices . . . . . . . . . . . . . . 13 9.1. Isolation as a Service Requirement . . . . . . . . . . . 13 9.2. Isolation in IETF Network Slice Realization . . . . . . . 13 *****JD These sections will be moved to the new section 2. They assume a definition of the term 'isolation' which has never been explicitly rendered, so we will propose a definition to the mailing list. 10. Security Considerations . . . . . . . . . . . . . . . . . . . 14 *****JD Relevant material will be moved to section 5.2. We will propose what we consider to be relevant and irrelevant material to the mailing list. 11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 14 *****JD The Framework draft already has this section. 12. Acknowledgment . . . . . . . . . . . . . . . . . . . . . . . 15 *****JD This section will be moved to section 6. 13. Informative References . . . . . . . . . . . . . . . . . . . 15 *****JD This section will be moved to section 7. Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 17 *****JD This will need to be sorted out with the authors and contributors to the Framework draft. *****JD For reference, below is the current table of contents for the Framework draft: Framework for IETF Network Slices draft-ietf-teas-ietf-network-slice-framework-00 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 2. IETF Network Slice Objectives . . . . . . . . . . . . . . . . 4 3. Framework . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1. Management systems or other applications . . . . . . . . 6 3.2. Expressing connectivity intents . . . . . . . . . . . . . 6 3.3. IETF Network Slice Controller (NSC) . . . . . . . . . . . 8 3.3.1. Northbound Interface (NBI) . . . . . . . . . . . . . 9 3.4. Mapping . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.5. Underlying technology . . . . . . . . . . . . . . . . . . 9 4. Applicability of ACTN to IETF Network Slices . . . . . . . . 10 5. Considerations . . . . . . . . . . . . . . . . . . . . . . . 12 5.1. Monitoring . . . . . . . . . . . . . . . . . . . . . . . 12 5.2. Security Considerations . . . . . . . . . . . . . . . . . 13 5.3. Privacy Considerations . . . . . . . . . . . . . . . . . 13 5.4. IANA Considerations . . . . . . . . . . . . . . . . . . . 13 6. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 13 7. References . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.1. Normative References . . . . . . . . . . . . . . . . . . 14 7.2. Informative References . . . . . . . . . . . . . . . . . 14 Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 18 Yours Irrespectively, John Juniper Business Use Only
- [Teas] Disposition of draft-ietf-teas-ietf-networ… John E Drake
- Re: [Teas] Disposition of draft-ietf-teas-ietf-ne… LUIS MIGUEL CONTRERAS MURILLO
- Re: [Teas] Disposition of draft-ietf-teas-ietf-ne… Greg Mirsky
- Re: [Teas] Disposition of draft-ietf-teas-ietf-ne… mohamed.boucadair