Re: [Teas] Slice as a Service : Response of IETF Network slice coauthors to TEAS mailing list

John E Drake <jdrake@juniper.net> Thu, 04 March 2021 19:59 UTC

From: John E Drake <jdrake@juniper.net>
To: "adrian@olddog.co.uk" <adrian@olddog.co.uk>, 'TEAS WG' <teas@ietf.org>
CC: 'Shunsuke Homma' <s.homma0718@gmail.com>, 'Jeff Tantsura' <jefftant.ietf@gmail.com>, 'Kiran Makhijani' <kiranm@futurewei.com>, "'Luis M. Contreras'" <contreras.ietf@gmail.com>
Thread-Topic: [Teas] Slice as a Service : Response of IETF Network slice coauthors to TEAS mailing list
Thread-Index: AdcRItnRlgJjMYDXS32uGKciK4tmGQADVWSA
Date: Thu, 04 Mar 2021 19:59:08 +0000
Message-ID: <MN2PR05MB66236D56C1A9AF5F7570FC02C7979@MN2PR05MB6623.namprd05.prod.outlook.com>
References: <00b201d71122$dd464850$97d2d8f0$@olddog.co.uk>
In-Reply-To: <00b201d71122$dd464850$97d2d8f0$@olddog.co.uk>
Accept-Language: en-US
Content-Language: en-US
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=2021-03-04T19:59:07Z; 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=7515cd91-3c6c-4838-b8f4-0bc433c33ece; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_ContentBits=2
authentication-results: olddog.co.uk; dkim=none (message not signed) header.d=none;olddog.co.uk; 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: 3639969f-d45a-4666-6403-08d8df47f93d
x-ms-traffictypediagnostic: MN2PR05MB6429:
x-microsoft-antispam-prvs: <MN2PR05MB64297F2A94DD8F718765DC4BC7979@MN2PR05MB6429.namprd05.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:7691;
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)(396003)(136003)(39860400002)(376002)(346002)(366004)(7696005)(186003)(64756008)(316002)(86362001)(478600001)(55016002)(66476007)(2906002)(9686003)(66946007)(66556008)(76116006)(33656002)(53546011)(6506007)(71200400001)(8676002)(54906003)(4326008)(66446008)(8936002)(26005)(110136005)(5660300002)(52536014)(223123001)(130980200001); DIR:OUT; SFP:1102;
x-ms-exchange-antispam-messagedata: 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
x-ms-exchange-transport-forked: True
Content-Type: multipart/alternative; boundary="_000_MN2PR05MB66236D56C1A9AF5F7570FC02C7979MN2PR05MB6623namp_"
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: 3639969f-d45a-4666-6403-08d8df47f93d
X-MS-Exchange-CrossTenant-originalarrivaltime: 04 Mar 2021 19:59:08.8468 (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: qr3DavKlocMXGZpvP0Xv5w+eHSmIPmSCTH3Aprd81DMhqTJM6LVn4ginLrzdAGKXGXuA4d1ryo8R8xDlhb7qog==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR05MB6429
X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369, 18.0.761 definitions=2021-03-04_08:2021-03-03, 2021-03-04 signatures=0
X-Proofpoint-Spam-Details: rule=outbound_spam_notspam policy=outbound_spam score=0 suspectscore=0 adultscore=0 bulkscore=0 clxscore=1015 priorityscore=1501 lowpriorityscore=0 mlxlogscore=999 spamscore=0 malwarescore=0 mlxscore=0 phishscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2103040096
Archived-At: <https://mailarchive.ietf.org/arch/msg/teas/IK38A2EPk0DpO_ahpVFtGGA1xlk>
Subject: Re: [Teas] Slice as a Service : Response of IETF Network slice coauthors to TEAS mailing list
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: Thu, 04 Mar 2021 19:59:18 -0000

Exactly.  And the channel for sending data between a network slice service endpoint, aka a CE, and a network slice endpoint, aka a PE, is an attachment circuit.  Why is this hard?

Yours Irrespectively,

John



Juniper Business Use Only
From: Teas <teas-bounces@ietf.org> On Behalf Of Adrian Farrel
Sent: Thursday, March 4, 2021 1:19 PM
To: 'TEAS WG' <teas@ietf.org>
Cc: 'Shunsuke Homma' <s.homma0718@gmail.com>; 'Jeff Tantsura' <jefftant.ietf@gmail.com>; 'Kiran Makhijani' <kiranm@futurewei.com>; 'Luis M. Contreras' <contreras.ietf@gmail.com>
Subject: [Teas] Slice as a Service : Response of IETF Network slice coauthors to TEAS mailing list

[External Email. Be cautious of content]

Thanks to the pen-holders for trying to progress this discussion.

I wonder whether we should separate the discussions into separate threads? As we discuss the different points it'll get messy unless we do that.

I've changed the subject line for the issue I want to call out.

> IETF network slice as a Service
> The co-authors agree with the mailing list suggestion to treat the IETF network
> slice as  a service.

> In summary, an IETF Network Slice Service contains multiple endpoints (see

> discussion below for endpoint), multiple connections and multiple SLOs.
> This is aligned with the mailing list. In consequence we propose to add
> "Service" to the text  in the draft defining what an IETF network slice is.

I don't think this is an either/or. I think we have "a slice as perceived by the consumer/customer" and "a slice as operated by the operator of the underlay network". This is very similar to how VPNs are discussed.

So, yes, lets have a description of a "network slice service". But I think we have to start with a general description of a "network slice". The former is how the consumer/customer perceives the slice. The latter is what is really going on: the resources and capabilities of the operator's network are being selectively partitioned to provide the service.

Cheers,
Adrian

[Teas] Slice as a Service : Response of IETF Netw… Adrian Farrel
Re: [Teas] Slice as a Service : Response of IETF … John E Drake
Re: [Teas] Slice as a Service : Response of IETF … Gyan Mishra