A Framework for Enhanced Virtual Private Networks (VPN+) Services
draft-ietf-teas-enhanced-vpn-05
TEAS working group J. Dong
Internet-Draft Huawei
Intended status: Informational S. Bryant
Expires: July 2020 Futurewei
Z. Li
China Mobile
T. Miyasaka
KDDI Corporation
Y.Lee
Sung Kyun Kwan University
February 18, 2020
A Framework for Enhanced Virtual Private Networks (VPN+) Services
draft-ietf-teas-enhanced-vpn-05
Abstract
This document describes the framework for Enhanced Virtual Private
Network (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 and
TE 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 providing
enhanced connectivity services between customer sites.
It is envisaged that enhanced VPNs will be delivered using a
combination of existing, modified, and new networking technologies.
This document provides an overview of relevant technologies and
identifies some areas for potential new work.
It is not envisaged that quite large numbers of VPN+ services will be
deployed in a network and, in particular, it is not intended that
all VPNs supported by a network will use VPN+ related 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/.
Dong, et al. Expires August 18, 2020 [Page 1]
Internet-Draft VPN+ Framework February 2020
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This Internet-Draft will expire on August 18, 2020.
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Table of Contents
1. Introduction ................................................ 3
2. Terminologies ............................................... 6
3. Overview of the Requirements ............................... 7
3.1. Isolation between Enhanced VPN Services ................ 7
3.1.1. A Pragmatic Approach to Isolation ................. 8
3.2. Performance Guarantee .................................. 9
3.3. Integration ........................................... 11
3.3.1. Abstraction ...................................... 11
3.4. Dynamic Management .................................... 12
3.5. Customized Control .................................... 12
3.6. Applicability ......................................... 13
3.7. Inter-Domain and Inter-Layer Network .................. 13
4. Architecture of Enhanced VPN ............................... 13
4.1. Layered Architecture ................................. 15
4.2. Multi-Point to Multi-Point (MP2MP) Connectivity ....... 17
4.3. Application Specific Network Types .................... 18
4.4. Scaling Considerations ................................ 18
5. Candidate Technologies ..................................... 19
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