Liaison statement: LS on a Framework for Network Slices in Networks Built from IETF Technologies

1. Description

The IETF TEAS WG [1] would like to inform 3GPP and the SDOs in the Cc list
about “A Framework for Network Slices in Networks Built from IETF Technologies”
[2], an informational document that has been submitted to the IESG for
publication. This document describes network slicing in the context of networks
built from IETF technologies. It establishes the general principles of network
slicing in the IETF context.

The IETF TEAS WG would also like to inform 3GPP about the following network
slicing related documents (in no particular order of relevance) that have been
adopted by the WG and are currently going through normal WG process:

• IETF Network Slice Application in 3GPP 5G End-to-End Network Slice [3]: This
informational document describes the application of the IETF network slice
framework in providing 5G end-to-end network slices, including network slice
mapping in management plane, control plane and data plane. • A YANG Data Model
for the IETF Network Slice Service [4]: This document defines a YANG data model
for the IETF Network Slice Service • Applicability of Abstraction and Control
of Traffic Engineered Networks (ACTN) to Network Slicing [5]: This
informational document outlines the applicability of ACTN to network slicing in
a Traffic Engineered network that utilizes IETF technologies. • A Realization
of IETF Network Slices for 5G Networks Using Current IP/MPLS Technologies [6]:
This document describes a basic IETF Network Slice realization model in IP/MPLS
networks with a focus on the Transport Network fulfilling 5G slicing
connectivity requirements. This realization model reuses many building blocks
currently used in service provider networks. • Realizing Network Slices in
IP/MPLS Networks [7]: This document describes a solution to realize network
slicing in IP/MPLS networks using Network Resource Partitions (NRPs). It
introduces the notion of a Slice-Flow Aggregate which comprises one or more
IETF network slice traffic streams and describes the NRP Policy that can be
used to instantiate control and data plane behaviors on select topological
elements associated with the NRP that supports a Slice-Flow Aggregate. • A
Framework for Enhanced Virtual Private Network (VPN+) [8]: This document
describes the framework for Enhanced Virtual Private Network (VPN+) to support
the needs of applications with specific traffic performance requirements. VPN+
leverages the VPN and Traffic Engineering (TE) technologies and adds
characteristics that specific services require beyond those provided by
conventional VPNs. Typically, VPN+ will be used to underpin network slicing,
but could also be of use in its own right providing enhanced connectivity
services between customer sites. • IETF Network Slice Use Cases and Attributes
for the Slice Service Interface of IETF Network Slice Controllers [9]: This
document analyzes the needs of potential customers of network slices realized
with IETF techniques in several use cases and identifies the functionalities
for the IETF Network Slice Service Interface of an IETF Network Slice
Controller to satisfy such requests.

The following is the mailing list where discussions related to these documents
take place [10].

Feedback on the documents can be shared directly on the mailing list.

2. Upcoming Meetings

IETF 118 4-10 November 2023, Prague, Czechia
IETF 119 16-22 March 2024, Brisbane, Australia

3. References

[1] https://datatracker.ietf.org/wg/teas/about/
[2] https://datatracker.ietf.org/doc/html/draft-ietf-teas-ietf-network-slices
[3]
https://datatracker.ietf.org/doc/html/draft-ietf-teas-5g-network-slice-application
[4]
https://datatracker.ietf.org/doc/html/draft-ietf-teas-ietf-network-slice-nbi-yang
[5]
https://datatracker.ietf.org/doc/html/draft-ietf-teas-applicability-actn-slicing
[6] https://datatracker.ietf.org/doc/html/draft-ietf-teas-5g-ns-ip-mpls [7]
https://datatracker.ietf.org/doc/html/draft-ietf-teas-ns-ip-mpls [8]
https://datatracker.ietf.org/doc/html/draft-ietf-teas-enhanced-vpn [9]
https://datatracker.ietf.org/doc/html/draft-ietf-teas-ietf-network-slice-use-cases
[10] https://www.ietf.org/mailman/listinfo/teas

State	Posted
Submitted Date	2023-10-09
From Group	teas
From Contact	Charles Eckel
To Groups	3GPP-TSGSA-SA2, 3GPP-TSGSA-SA3, 3GPP-TSG-SA-WG5, O3GPPTSGRAN3
To Contacts	Susanna Kooistra <3GPPLiaison@etsi.org> Peter Schmitt <Peter.Schmitt@huawei.com>
Cc	ITU-T SG15 <tsbsg15@itu.int> O-RAN WG1 and O-RAN WG6 and O-RAN WG9 <liaisons@o-ran.org> MEF <liaisons@mef.net> GSMA Networks Working Group <ng@gsma.com> BBF <liaisons@broadband-forum.org> Traffic Engineering Architecture and Signaling Discussion List <teas@ietf.org> Andrew Alston <andrew-ietf@liquid.tech> John Scudder <jgs@juniper.net> Lou Berger <lberger@labn.net> Jim Guichard <james.n.guichard@futurewei.com> Vishnu Beeram <vbeeram@juniper.net> Oscar de Dios <oscar.gonzalezdedios@telefonica.com>
Response Contact	Vishnu Beeram <vbeeram@juniper.net> Lou Berger <lberger@labn.net> Oscar de Dios <oscar.gonzalezdedios@telefonica.com>
Purpose	For information
Attachments	LS on a Framework for Network Slices in Networks Built from IETF Technologies
Liaisons referring to this one	LS on RFC 9543, "A Framework for Network Slices in Networks Built from IETF Technologies"
Body	1. Description The IETF TEAS WG [1] would like to inform 3GPP and the SDOs in the Cc list about “A Framework for Network Slices in Networks Built from IETF Technologies” [2], an informational document that has been submitted to the IESG for publication. This document describes network slicing in the context of networks built from IETF technologies. It establishes the general principles of network slicing in the IETF context. The IETF TEAS WG would also like to inform 3GPP about the following network slicing related documents (in no particular order of relevance) that have been adopted by the WG and are currently going through normal WG process: • IETF Network Slice Application in 3GPP 5G End-to-End Network Slice [3]: This informational document describes the application of the IETF network slice framework in providing 5G end-to-end network slices, including network slice mapping in management plane, control plane and data plane. • A YANG Data Model for the IETF Network Slice Service [4]: This document defines a YANG data model for the IETF Network Slice Service • Applicability of Abstraction and Control of Traffic Engineered Networks (ACTN) to Network Slicing [5]: This informational document outlines the applicability of ACTN to network slicing in a Traffic Engineered network that utilizes IETF technologies. • A Realization of IETF Network Slices for 5G Networks Using Current IP/MPLS Technologies [6]: This document describes a basic IETF Network Slice realization model in IP/MPLS networks with a focus on the Transport Network fulfilling 5G slicing connectivity requirements. This realization model reuses many building blocks currently used in service provider networks. • Realizing Network Slices in IP/MPLS Networks [7]: This document describes a solution to realize network slicing in IP/MPLS networks using Network Resource Partitions (NRPs). It introduces the notion of a Slice-Flow Aggregate which comprises one or more IETF network slice traffic streams and describes the NRP Policy that can be used to instantiate control and data plane behaviors on select topological elements associated with the NRP that supports a Slice-Flow Aggregate. • A Framework for Enhanced Virtual Private Network (VPN+) [8]: This document describes the framework for Enhanced Virtual Private Network (VPN+) to support the needs of applications with specific traffic performance requirements. VPN+ leverages the VPN and Traffic Engineering (TE) technologies and adds characteristics that specific services require beyond those provided by conventional VPNs. Typically, VPN+ will be used to underpin network slicing, but could also be of use in its own right providing enhanced connectivity services between customer sites. • IETF Network Slice Use Cases and Attributes for the Slice Service Interface of IETF Network Slice Controllers [9]: This document analyzes the needs of potential customers of network slices realized with IETF techniques in several use cases and identifies the functionalities for the IETF Network Slice Service Interface of an IETF Network Slice Controller to satisfy such requests. The following is the mailing list where discussions related to these documents take place [10]. Feedback on the documents can be shared directly on the mailing list. 2. Upcoming Meetings IETF 118 4-10 November 2023, Prague, Czechia IETF 119 16-22 March 2024, Brisbane, Australia 3. References [1] https://datatracker.ietf.org/wg/teas/about/ [2] https://datatracker.ietf.org/doc/html/draft-ietf-teas-ietf-network-slices [3] https://datatracker.ietf.org/doc/html/draft-ietf-teas-5g-network-slice-application [4] https://datatracker.ietf.org/doc/html/draft-ietf-teas-ietf-network-slice-nbi-yang [5] https://datatracker.ietf.org/doc/html/draft-ietf-teas-applicability-actn-slicing [6] https://datatracker.ietf.org/doc/html/draft-ietf-teas-5g-ns-ip-mpls [7] https://datatracker.ietf.org/doc/html/draft-ietf-teas-ns-ip-mpls [8] https://datatracker.ietf.org/doc/html/draft-ietf-teas-enhanced-vpn [9] https://datatracker.ietf.org/doc/html/draft-ietf-teas-ietf-network-slice-use-cases [10] https://www.ietf.org/mailman/listinfo/teas

Liaison statement LS on a Framework for Network Slices in Networks Built from IETF Technologies

Liaison statement
LS on a Framework for Network Slices in Networks Built from IETF Technologies