Segment Routing for Enhanced VPN Service
draft-dong-spring-sr-for-enhanced-vpn-02

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Last updated 2018-10-22
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Network Working Group                                            J. Dong
Internet-Draft                                                 S. Bryant
Intended status: Standards Track                     Huawei Technologies
Expires: April 25, 2019                                            Z. Li
                                                            China Mobile
                                                             T. Miyasaka
                                                        KDDI Corporation
                                                        October 22, 2018

                Segment Routing for Enhanced VPN Service
                draft-dong-spring-sr-for-enhanced-vpn-02

Abstract

   Enhanced VPN (VPN+) is an enhancement to VPN technology to enable it
   to support the needs of new applications, particularly applications
   that are associated with 5G services.  These applications require
   better isolation from both control and data plane's perspective and
   have more stringent performance requirements than can be provided
   with overlay VPNs.  The characteristics of an enhanced VPN as
   perceived by its tenant needs to be comparable to those of a
   dedicated private network.  This requires tight integration between
   the overlay VPN and the underlay network resources in a scalable
   manner.  An enhanced VPN may form the underpinning of 5G network
   slicing, but will also be of use in its own right.  This document
   describes the use of segment routing based mechanisms to provide the
   enhanced VPN service with dedicated network resources.  The proposed
   mechanism is applicable to both SR with MPLS data plane and SR with
   IPv6 data plane (SRv6).

Status of This Memo

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   This Internet-Draft will expire on April 25, 2019.

Dong, et al.             Expires April 25, 2019                 [Page 1]
Internet-Draft                 SR for VPN+                  October 2018

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Notation . . . . . . . . . . . . . . . . . . . .   4
   3.  Segment Routing with Resource Awareness . . . . . . . . . . .   4
   4.  Control Plane . . . . . . . . . . . . . . . . . . . . . . . .   5
   5.  Procedures  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     5.1.  Topology and Resource Computation . . . . . . . . . . . .   6
     5.2.  Network Resource and SID Allocation . . . . . . . . . . .   6
     5.3.  Construction of SR Virtual Networks . . . . . . . . . . .   8
     5.4.  VPN Service to SR Virtual Network Mapping . . . . . . . .   9
     5.5.  Network Visibility to Customer  . . . . . . . . . . . . .   9
   6.  Benefits of the Proposed Mechanism  . . . . . . . . . . . . .   9
     6.1.  MPLS-TP . . . . . . . . . . . . . . . . . . . . . . . . .  10
     6.2.  RSVP-TE . . . . . . . . . . . . . . . . . . . . . . . . .  10
     6.3.  Basic SR  . . . . . . . . . . . . . . . . . . . . . . . .  10
     6.4.  SR with Resource Awareness  . . . . . . . . . . . . . . .  11
   7.  Service Assurance . . . . . . . . . . . . . . . . . . . . . .  11
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  12
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  12
     11.2.  Informative References . . . . . . . . . . . . . . . . .  13
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

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