< draft-contreras-nmrg-transport-slice-intent-01.txt		draft-contreras-nmrg-transport-slice-intent-02.txt >
	NMRG LM. Contreras		NMRG LM. Contreras
	Internet-Draft Telefonica		Internet-Draft Telefonica
	Intended status: Informational P. Demestichas		Intended status: Informational P. Demestichas
	Expires: January 14, 2021 WINGS		Expires: January 27, 2021 WINGS
	J. Tantsura		J. Tantsura
	Apstra, Inc.		Apstra, Inc.
	July 13, 2020		July 26, 2020
	Transport Slice Intent		Transport Slice Intent
	draft-contreras-nmrg-transport-slice-intent-01		draft-contreras-nmrg-transport-slice-intent-02
	Abstract		Abstract
	Slicing at the transport network is expected to be offered as part of		Slicing at the transport network is expected to be offered as part of
	end-to-end network slices, fostered by the introduction of new		end-to-end network slices, fostered by the introduction of new
	services such as 5G. This document explores the usage of intent		services such as 5G. This document explores the usage of intent
	technologies for requesting transport slices.		technologies for requesting transport slices.
	Status of This Memo		Status of This Memo
	skipping to change at page 1, line 36 ¶		skipping to change at page 1, line 36 ¶
	Internet-Drafts are working documents of the Internet Engineering		Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF). Note that other groups may also distribute		Task Force (IETF). Note that other groups may also distribute
	working documents as Internet-Drafts. The list of current Internet-		working documents as Internet-Drafts. The list of current Internet-
	Drafts is at https://datatracker.ietf.org/drafts/current/.		Drafts is at https://datatracker.ietf.org/drafts/current/.
	Internet-Drafts are draft documents valid for a maximum of six months		Internet-Drafts are draft documents valid for a maximum of six months
	and may be updated, replaced, or obsoleted by other documents at any		and may be updated, replaced, or obsoleted by other documents at any
	time. It is inappropriate to use Internet-Drafts as reference		time. It is inappropriate to use Internet-Drafts as reference
	material or to cite them other than as "work in progress."		material or to cite them other than as "work in progress."
	This Internet-Draft will expire on January 14, 2021.		This Internet-Draft will expire on January 27, 2021.
	Copyright Notice		Copyright Notice
	Copyright (c) 2020 IETF Trust and the persons identified as the		Copyright (c) 2020 IETF Trust and the persons identified as the
	document authors. All rights reserved.		document authors. All rights reserved.
	This document is subject to BCP 78 and the IETF Trust's Legal		This document is subject to BCP 78 and the IETF Trust's Legal
	Provisions Relating to IETF Documents		Provisions Relating to IETF Documents
	(https://trustee.ietf.org/license-info) in effect on the date of		(https://trustee.ietf.org/license-info) in effect on the date of
	publication of this document. Please review these documents		publication of this document. Please review these documents
	skipping to change at page 3, line 23 ¶		skipping to change at page 3, line 23 ¶
	This document leverages current industry trends in the definition of		This document leverages current industry trends in the definition of
	end-to-end network slices. The final objective is to describe		end-to-end network slices. The final objective is to describe
	intents that can be used to flexibly declare the operational aspects		intents that can be used to flexibly declare the operational aspects
	and goals of a transport network slice, meaning that the customer		and goals of a transport network slice, meaning that the customer
	could declare what kind of transport slice is needed (the outcome)		could declare what kind of transport slice is needed (the outcome)
	and not how to achieve the goals of the transport slice.		and not how to achieve the goals of the transport slice.
	2. Transport slice intent		2. Transport slice intent
	As stated in [I-D.irtf-nmrg-ibn-concepts-definitions], "Intent is a		As stated in [I-D.irtf-nmrg-ibn-concepts-definitions], "Intent is a
	higher-level declarative policy that operates at the level of a		declaration of operational goals that a network should meet and
	network and services it provides, not individual devices. It is used		outcomes that the network is supposed to deliver, without specifying
	to define outcomes and high-level operational goals, without the need		how to achieve them. Those goals and outcomes are defined in a
	to enumerate specific events, conditions, and actions".		manner that is purely declarative - they specify what to accomplish,
			not how to achieve it."
	When applied to transport networks, this implies that an intent for		When applied to transport networks, this implies that an intent for
	transport slices should provide the necessary abstraction with		transport slices should provide the necessary abstraction with
	respect to implementation details, including the final devices (or		respect to implementation details, including the final devices (or
	resources) involved, and be focused on the characteristics and		resources) involved, and be focused on the characteristics and
	performance expectations related to it.		performance expectations related to it.
	With that intent it can be expected that the intent based system can		With that intent it can be expected that the intent based system can
	fulfill and assure the requested transport network slice, triggering		fulfill and assure the requested transport network slice, triggering
	initial configurations at the time of initial provisioning and		initial configurations at the time of initial provisioning and
	skipping to change at page 5, line 36 ¶		skipping to change at page 5, line 38 ¶
	5. Security Considerations		5. Security Considerations
	To be done.		To be done.
	6. IANA Considerations		6. IANA Considerations
	This draft does not include any IANA considerations		This draft does not include any IANA considerations
	7. References		7. References
	[GSMA] "Generic Network Slice Template, version 3.0", NG.116 ,		[GSMA] "Generic Network Slice Template, version 2.0", NG.116 ,
	May 2020.		October 2019.
	[I-D.contreras-teas-slice-nbi]		[I-D.contreras-teas-slice-nbi]
	Contreras, L., Homma, S., and J. Ordonez-Lucena,		Contreras, L., Homma, S., and J. Ordonez-Lucena,
	"Considerations for defining a Transport Slice NBI",		"Considerations for defining a Transport Slice NBI",
	draft-contreras-teas-slice-nbi-01 (work in progress),		draft-contreras-teas-slice-nbi-01 (work in progress),
	March 2020.		March 2020.
	[I-D.irtf-nmrg-ibn-concepts-definitions]		[I-D.irtf-nmrg-ibn-concepts-definitions]
	Clemm, A., Ciavaglia, L., Granville, L., and J. Tantsura,		Clemm, A., Ciavaglia, L., Granville, L., and J. Tantsura,
	"Intent-Based Networking - Concepts and Definitions",		"Intent-Based Networking - Concepts and Definitions",
	draft-irtf-nmrg-ibn-concepts-definitions-01 (work in		draft-irtf-nmrg-ibn-concepts-definitions-01 (work in
	progress), March 2020.		progress), March 2020.
	[I-D.nsdt-teas-transport-slice-definition]		[I-D.nsdt-teas-transport-slice-definition]
	Rokui, R., Homma, S., Makhijani, K., Contreras, L., and J.		Rokui, R., Homma, S., Makhijani, K., and L. Contreras,
	Tantsura, "IETF Definition of Transport Slice", draft-		"IETF Definition of Transport Slice", draft-nsdt-teas-
	nsdt-teas-transport-slice-definition-03 (work in		transport-slice-definition-02 (work in progress), April
	progress), July 2020.		2020.
	[TS28.541]		[TS28.541]
	"TS 28.541 Management and orchestration; 5G Network		"TS 28.541 Management and orchestration; 5G Network
	Resource Model (NRM); Stage 2 and stage 3 (Release 16)		Resource Model (NRM); Stage 2 and stage 3 (Release 16)
	V16.2.0.", 3GPP TS 28.541 V16.2.0 , September 2019.		V16.2.0.", 3GPP TS 28.541 V16.2.0 , September 2019.
	Acknowledgments		Acknowledgments
	This work has been partly funded by the European Commission through		This work has been partly funded by the European Commission through
	the H2020 project 5G-EVE (Grant Agreement no. 815074).		the H2020 project 5G-EVE (Grant Agreement no. 815074).
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