A Framework for Enhanced Virtual Private Networks (VPN+) Service
draft-ietf-teas-enhanced-vpn-01
TEAS Working Group J. Dong
Internet-Draft S. Bryant
Intended status: Informational Huawei
Expires: August 18, 2019 Z. Li
China Mobile
T. Miyasaka
KDDI Corporation
Y. Lee
Huawei
February 14, 2019
A Framework for Enhanced Virtual Private Networks (VPN+) Service
draft-ietf-teas-enhanced-vpn-01
Abstract
This document specifies a framework for using existing, modified and
potential new networking technologies as components to provide an
Enhanced Virtual Private Networks (VPN+) service. The purpose is to
support the needs of new applications, particularly applications that
are associated with 5G services by utilizing an approach that is
based on existing VPN technologies and adds features that specific
services require over and above traditional VPNs.
Typically, VPN+ will be used to form the underpinning of network
slicing, but could also be of use in its own right. It is not
envisaged that large numbers of VPN+ instances will be deployed in a
network and, in particular, it is not intended that all VPNs
supported by a network will use VPN+ techniques.
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 18, 2019.
Dong, et al. Expires August 18, 2019 [Page 1]
Internet-Draft VPN+ Framework February 2019
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Overview of the Requirements . . . . . . . . . . . . . . . . 5
2.1. Isolation between Virtual Networks . . . . . . . . . . . 5
2.1.1. A Pragmatic Approach to Isolation . . . . . . . . . . 7
2.2. Performance Guarantee . . . . . . . . . . . . . . . . . . 8
2.3. Integration . . . . . . . . . . . . . . . . . . . . . . . 9
2.3.1. Abstraction . . . . . . . . . . . . . . . . . . . . . 10
2.4. Dynamic Configuration . . . . . . . . . . . . . . . . . . 10
2.5. Customized Control . . . . . . . . . . . . . . . . . . . 11
2.6. Applicability . . . . . . . . . . . . . . . . . . . . . . 11
3. Architecture of Enhanced VPN . . . . . . . . . . . . . . . . 11
3.1. Layered Architecture . . . . . . . . . . . . . . . . . . 13
3.2. Multi-Point to Multi-Point . . . . . . . . . . . . . . . 14
3.3. Application Specific Network Types . . . . . . . . . . . 14
3.4. Scaling Considerations . . . . . . . . . . . . . . . . . 14
4. Candidate Technologies . . . . . . . . . . . . . . . . . . . 15
4.1. Underlay Packet and Frame-Based Data Planes . . . . . . . 15
4.1.1. FlexE . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1.2. Dedicated Queues . . . . . . . . . . . . . . . . . . 16
4.1.3. Time Sensitive Networking . . . . . . . . . . . . . . 17
4.2. Packet and Frame-Based Network Layer . . . . . . . . . . 17
4.2.1. Deterministic Networking . . . . . . . . . . . . . . 17
4.2.2. MPLS Traffic Engineering (MPLS-TE) . . . . . . . . . 18
4.2.3. Segment Routing . . . . . . . . . . . . . . . . . . . 18
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