Subsequent Address Family Indicator for SDWAN Ports
draft-dunbar-idr-sdwan-port-safi-03

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Last updated 2019-06-27
Replaces draft-dunbar-idr-bgp-sdwan-overlay-ext
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Network Working Group                                         L. Dunbar
Internet Draft                                                Futurewei
Intended status: Experimental                                  S. Hares
Expires: December 27, 2019                      Hickory Hill Consulting

                                                          June 27, 2019

            Subsequent Address Family Indicator for SDWAN Ports
                    draft-dunbar-idr-sdwan-port-safi-03

Abstract

   The document specifies a new BGP NLRI and SAFI for advertising WAN
   ports properties of a SDWAN edge node. SDWAN edge node's WAN ports
   may face untrusted networks, such as the public internet, may get
   assigned IP addresses from the Internet Service Providers (ISPs),
   may get assigned dynamic IP addresses via DHCP, or may have private
   addresses (e.g. inside third party Cloud DCs). Packets forwarded
   through those SDWAN WAN ports might need to be encrypted (depending
   on the user policies) or need to go through NAT. SDWAN edge nodes
   need to propagate those WAN ports properties to the peers who are
   authorized to communicate across different types of underlay
   networks including the untrusted networks.

   BGP Route Reflectors (RR) are proposed as the entities to propagate
   the WAN ports properties of SDWAN edge nodes to a controlled group
   of edges reachable via overlay networks.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   months and may be updated, replaced, or obsoleted by other documents

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Internet-Draft       SAFI for SDWAN WAN Properties            June 2019

   at any time.  It is inappropriate to use Internet-Drafts as
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   This Internet-Draft will expire on December 27, 2019.

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

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Table of Contents

   1. Introduction...................................................3
   2. Conventions used in this document..............................5
   3. SDWAN NLRI Format..............................................5
      3.1. SDWAN Route Type..........................................8
      3.2. Port Distinguisher........................................8
      3.3. SDWAN Site ID.............................................8
      3.4. Extended Port Property....................................8
      3.5. IPsec Security Association Property......................10
      3.6. Remote Endpoint..........................................11
   4. Manageability Considerations..................................12
   5. Security Considerations.......................................12
   6. IANA Considerations...........................................12
   7. References....................................................13

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      7.1. Normative References.....................................13
      7.2. Informative References...................................13
   8. Acknowledgments...............................................14

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 how/why
   using BGP as control plane for the SDWAN networks.

   [Tunnel-Encap] describes how to construct a BGP UPDATE messages that
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