BGP-LS Filters : A Framework for Network Slicing and Enhanced VPNs
draft-drake-bess-enhanced-vpn-03

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Last updated 2020-05-21
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BESS Working Group                                              J. Drake
Internet-Draft                                          Juniper Networks
Intended status: Standards Track                               A. Farrel
Expires: November 22, 2020                            Old Dog Consulting
                                                                L. Jalil
                                                                 Verizon
                                                              A. Lingala
                                                                    AT&T
                                                            May 21, 2020

   BGP-LS Filters : A Framework for Network Slicing and Enhanced VPNs
                    draft-drake-bess-enhanced-vpn-03

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.

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   This Internet-Draft will expire on November 22, 2020.

Drake, et al.           Expires November 22, 2020               [Page 1]
Internet-Draft                  MPLS SFC                        May 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   3.  Overview of Approach  . . . . . . . . . . . . . . . . . . . .   3
   4.  Detailed Protocol Operation . . . . . . . . . . . . . . . . .   5
     4.1.  The BGP-LS Filter Attribute . . . . . . . . . . . . . . .   7
       4.1.1.  The Filter TLV  . . . . . . . . . . . . . . . . . . .   8
       4.1.2.  The DSCP List TLV . . . . . . . . . . . . . . . . . .   9
       4.1.3.  The Color List TLV  . . . . . . . . . . . . . . . . .  10
       4.1.4.  The Root TLV  . . . . . . . . . . . . . . . . . . . .  11
     4.2.  Error Handling  . . . . . . . . . . . . . . . . . . . . .  11
   5.  Comparison With ACTN  . . . . . . . . . . . . . . . . . . . .  12
   6.  Examples  . . . . . . . . . . . . . . . . . . . . . . . . . .  12
     6.1.  MP2MP Connectivity  . . . . . . . . . . . . . . . . . . .  13
     6.2.  P2MP Unidirectional Connectivity  . . . . . . . . . . . .  14
     6.3.  P2P Unidirectional Connectivity . . . . . . . . . . . . .  15
     6.4.  P2P Bidirectional Connectivity  . . . . . . . . . . . . .  16
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  17
   8.  Manageability Considerations  . . . . . . . . . . . . . . . .  17
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  17
     9.1.  New BGP Path Attribute  . . . . . . . . . . . . . . . . .  17
     9.2.  New BGP-LS Filter attribute TLVs Type Registry  . . . . .  18
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  18
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  18
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  18
     11.2.  Informative References . . . . . . . . . . . . . . . . .  20
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  21
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