Definition of IETF Network Slices
draft-ietf-teas-ietf-network-slice-definition-01
teas R. Rokui
Internet-Draft Nokia
Intended status: Informational S. Homma
Expires: August 26, 2021 NTT
K. Makhijani
Futurewei
LM. Contreras
Telefonica
J. Tantsura
Juniper Networks
February 22, 2021
Definition of IETF Network Slices
draft-ietf-teas-ietf-network-slice-definition-01
Abstract
This document provides a definition of the term "IETF Network Slice"
for use within the IETF and specifically as a reference for other
IETF documents that describe or use aspects of network slices.
The document also describes the characteristics of an IETF network
slice, related terms and their meanings, and explains how IETF
network slices can be used in combination with end-to-end network
slices or independent of them.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on August 26, 2021.
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Internet-Draft draft-nsdt-ietf-network-slice-definition February 2021
Copyright Notice
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document authors. All rights reserved.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terms and Abbreviations . . . . . . . . . . . . . . . . . . . 3
3. Definition and Scope of IETF Network Slice . . . . . . . . . 4
4. IETF Network Slice System Characteristics . . . . . . . . . . 4
4.1. Objectives for IETF Network Slices . . . . . . . . . . . 5
4.1.1. Service Level Objectives . . . . . . . . . . . . . . 5
4.1.2. Minimal Set of SLOs . . . . . . . . . . . . . . . . . 5
4.1.3. Other Objectives . . . . . . . . . . . . . . . . . . 7
4.2. IETF Network Slice Endpoints . . . . . . . . . . . . . . 7
4.2.1. IETF Network Slice Connectivity Types . . . . . . . . 9
4.3. IETF Network Slice Composition . . . . . . . . . . . . . 9
5. IETF Network Slice Structure . . . . . . . . . . . . . . . . 10
6. IETF Network Slice Stakeholders . . . . . . . . . . . . . . . 11
7. IETF Network Slice Controller Interfaces . . . . . . . . . . 12
8. Realizing IETF Network Slice . . . . . . . . . . . . . . . . 12
9. Isolation in IETF Network Slices . . . . . . . . . . . . . . 13
9.1. Isolation as a Service Requirement . . . . . . . . . . . 13
9.2. Isolation in IETF Network Slice Realization . . . . . . . 13
10. Security Considerations . . . . . . . . . . . . . . . . . . . 14
11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 14
12. Acknowledgment . . . . . . . . . . . . . . . . . . . . . . . 15
13. Informative References . . . . . . . . . . . . . . . . . . . 15
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 17
1. Introduction
A number of use cases benefit from network connections that along
with the connectivity provide assurance of meeting a specific set of
objectives wrt network resources use. In this document, as detailed
in the subsequent sections, we refer to this connectivity and
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