SR For SDWAN: VPN with Underlay SLA
draft-dukes-sr-for-sdwan-00

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Network Working Group                                      D. Dukes, Ed.
Internet-Draft                                               C. Filsfils
Intended status: Standards Track                                G. Dawra
Expires: April 29, 2018                                     P. Camarillo
                                                                 F. Clad
                                                           Cisco Systems
                                                              S. Salsano
                                               Univ. of Rome Tor Vergata
                                                        October 26, 2017

                  SR For SDWAN: VPN with Underlay SLA
                    draft-dukes-sr-for-sdwan-00.txt

Abstract

   This document describes how SR enables underlay Service Level
   Agreements (SLA) to a VPN with scale and security while ensuring
   service opacity.  This solution applies to Over-The-Top VPN (OTT VPN)
   and Software-Defined WAN (SDWAN).

Status of This Memo

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Dukes, et al.            Expires April 29, 2018                 [Page 1]
Internet-Draft     SR For SDWAN: VPN with Underlay SLA      October 2017

   to this document.  Code Components extracted from this document must
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Notation . . . . . . . . . . . . . . . . . . . .   3
   3.  Single Provider . . . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Directly Connected CE to PE . . . . . . . . . . . . . . .   3
     3.2.  Best-effort Underlay Transport  . . . . . . . . . . . . .   5
     3.3.  SR for Underlay SLA Differentiation . . . . . . . . . . .   6
     3.4.  Accounting  . . . . . . . . . . . . . . . . . . . . . . .   8
     3.5.  Security  . . . . . . . . . . . . . . . . . . . . . . . .   8
     3.6.  Remotely Connected (to PE)  . . . . . . . . . . . . . . .   8
   4.  Multiple Providers  . . . . . . . . . . . . . . . . . . . . .   8
   5.  Control Plane . . . . . . . . . . . . . . . . . . . . . . . .   9
   6.  Benefits  . . . . . . . . . . . . . . . . . . . . . . . . . .  11
     6.1.  Scale . . . . . . . . . . . . . . . . . . . . . . . . . .  11
     6.2.  Privacy . . . . . . . . . . . . . . . . . . . . . . . . .  12
     6.3.  Flexible Billing  . . . . . . . . . . . . . . . . . . . .  12
     6.4.  Security  . . . . . . . . . . . . . . . . . . . . . . . .  12
   7.  Appendix  . . . . . . . . . . . . . . . . . . . . . . . . . .  12
     7.1.  Single Provider Example Using End.BM With an MPLS Core  .  12
     7.2.  Single Provider Example Using MPLS From CE to PE for BSID  12
     7.3.  Single Provider Example Using SRMPLS Over UDP For CE to
           PE Not Directly Connected Over Internet . . . . . . . . .  12
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     10.1.  Informative References . . . . . . . . . . . . . . . . .  13
     10.2.  Normative References'  . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   This document describes how SR enables underlay SLA to a VPN with
   scale and security while ensuring service opacity.  This solution
   applies to Over-The-Top VPN (OTT VPN) with SLA differentiation, and
   Software-Defined WAN (SDWAN) with SLA differentiation.

   The body of this text uses SRv6 for illustration.  A similar solution
   leveraging SR-MPLS is illustrated in an appendix.

   This document assumes familiarity with the following IETF documents:
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