BGP-LS Maps : A Framework for Network Slicing and Enhanced VPNs
draft-drake-bess-enhanced-vpn-01

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BESS Working Group                                              J. Drake
Internet-Draft                                          Juniper Networks
Intended status: Standards Track                               A. Farrel
Expires: November 11, 2019                            Old Dog Consulting
                                                            May 10, 2019

    BGP-LS Maps : A Framework for Network Slicing and Enhanced VPNs
                    draft-drake-bess-enhanced-vpn-01

Abstract

   Future networks that support advanced services, such as those enabled
   by 5G mobile networks, envision a set of overlay networks each with
   different performance and scaling properties.  These overlays are
   known as network slices and are realized over a common underlay
   network.

   In order to support network slicing, as well as to offer enhanced VPN
   services in general, it is necessary to define a mechanism by which
   specific resources (links and/or nodes) of an underlay network can be
   used by a specific network slice, VPN, or set of VPNs.  This document
   sets out such a mechanism for use in Segment Routing networks.

Status of This Memo

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   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on November 11, 2019.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents

Drake & Farrel          Expires November 11, 2019               [Page 1]
Internet-Draft                  MPLS SFC                        May 2019

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   3.  Overview of Approach  . . . . . . . . . . . . . . . . . . . .   3
   4.  Detailed Protocol Operation . . . . . . . . . . . . . . . . .   5
     4.1.  The BGP-LS Map Attribute  . . . . . . . . . . . . . . . .   6
       4.1.1.  The Map TLV . . . . . . . . . . . . . . . . . . . . .   7
       4.1.2.  The DSCP List TLV . . . . . . . . . . . . . . . . . .   9
       4.1.3.  The Color List TLV  . . . . . . . . . . . . . . . . .   9
       4.1.4.  The Root TLV  . . . . . . . . . . . . . . . . . . . .  10
     4.2.  Error Handling  . . . . . . . . . . . . . . . . . . . . .  11
   5.  Comparison With ACTN  . . . . . . . . . . . . . . . . . . . .  12
   6.  Examples  . . . . . . . . . . . . . . . . . . . . . . . . . .  12
     6.1.  MP2MP Connectivity  . . . . . . . . . . . . . . . . . . .  12
     6.2.  P2MP Unidirectional Connectivity  . . . . . . . . . . . .  13
     6.3.  P2P Unidirectional Connectivity . . . . . . . . . . . . .  14
     6.4.  P2P Bidirectional Connectivity  . . . . . . . . . . . . .  15
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  16
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  16
     8.1.  New BGP Path Attribute  . . . . . . . . . . . . . . . . .  16
     8.2.  New BGP-LS Map attribute TLVs Type Registry . . . . . . .  16
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  17
   10. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  17
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  17
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  17
     11.2.  Informative References . . . . . . . . . . . . . . . . .  19
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  20

1.  Introduction

   Network slicing is an approach to network operations that builds on
   the concept of network abstraction to provide programmability,
   flexibility, and modularity.  Driven largely by needs surfacing from
   5G, the concept of network slicing has gained traction, for example