SDWAN WAN Ports Property Advertisement in BGP UPDATE
draft-dunbar-idr-sdwan-port-safi-06

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Last updated 2019-11-21
Replaces draft-dunbar-idr-bgp-sdwan-overlay-ext
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Network Working Group                                         L. Dunbar
Internet Draft                                                Futurewei
Intended status: Informational                                 S. Hares
Expires: May 21, 2020                            Hickory Hill
Consulting

                                                      November 21, 2019

           SDWAN WAN Ports Property Advertisement in BGP UPDATE
                    draft-dunbar-idr-sdwan-port-safi-06

Abstract

   The document describes how the SDWAN SAFI, which is assigned by IANA
   in the First Come First Server range, is used for SDWAN edge nodes
   to propagate its WAN port properties to its controller.

   In the context of this document, BGP Route Reflectors (RR) is the
   component of the SDWAN Controller that receives the BGP UPDATE from
   SDWAN edges and in turns propagate the information to a group of
   authorized SDWAN edges reachable via overlay networks.

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xxx, et al.              Expires May 21, 2020                  [Page 1]
Internet-Draft       SAFI for SDWAN WAN Properties        November 2019

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   This Internet-Draft will expire on Dec 5, 2020.

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   Copyright (c) 2019 IETF Trust and the persons identified as the
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Table of Contents

   1. Introduction...................................................3
   2. Conventions used in this document..............................3
      2.1. Information to be propagated for SDWAN UPDATE.............4
      2.2. SAFI under the MP-NLRI....................................6
      2.3. How about a new Path Attribute under BGP UPDATE?..........6
   3. SDWAN WAN Port Identifer encoding in the MP-NLRI Path Attribute6
   4. WAN Port Properties encoding in the Tunnel Path Attribute......8
      4.1. Port Ext SubTLV for NAT...................................9
      4.2. IPsec Security Association Property......................10
      4.3. Remote Endpoint..........................................11
   5. Manageability Considerations..................................12
   6. Security Considerations.......................................12
   7. IANA Considerations...........................................12
   8. References....................................................12
      8.1. Normative References.....................................12
      8.2. Informative References...................................13
   9. Acknowledgments...............................................14

Dunbar, et al.           Expires Dec 21, 2020                  [Page 2]
Internet-Draft       SAFI for SDWAN WAN Properties        November 2019

1. Introduction

   [Net2Cloud-Problem] introduces using SDWAN to reach dynamic
   workloads in multiple third-party data centers and aggregate
   multiple underlay paths, including public untrusted networks,
   provided by different service providers.

   [SDWAN-BGP-USAGE] describes multiple SDWAN scenarios and illustrates
   how BGP is used as control plane for the SDWAN networks.

   The document describes BGP UPDATE for SDWAN edge nodes to propagate
   its WAN port properties to RR.

2. Conventions used in this document

   Cloud DC:   Off-Premise Data Centers that usually host applications
               and workload owned by different organizations or
               tenants.

   Controller: Used interchangeably with SDWAN controller to manage
               SDWAN overlay path creation/deletion and monitor the
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