BGP Extension for SDWAN Overlay Networks
draft-dunbar-idr-bgp-sdwan-overlay-ext-03

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Network Working Group                                         L. Dunbar
Internet Draft                                                  H. Wang
Intended status: Standards Track                                 W. Hao
Expires: January 2019                                            Huawei

                                                       November 7, 2018

                 BGP Extension for SDWAN Overlay Networks
                 draft-dunbar-idr-bgp-sdwan-overlay-ext-03

Abstract

   The document defines a new BGP SAFI with a new NLRI in order to
   advertise a SD-WAN node's properties with other SD-WAN nodes through
   third party untrusted networks. The goal is for SD-WAN network to
   scale; enabling SD-WAN overlay among large number of SD-WAN nodes
   with minimal provisioning, and allow services to be carried by
   different SD-WAN transport networks based on user specified
   criteria.

   A "SD-WAN" network consists of many segments of IPsec tunnels
   between SD-WAN nodes. An "end-point" is referring to a port on a SD-
   WAN node throughout this document.

   This document specifies new sub-TLVs for the SD-WAN End Point's
   Attributes.

Status of this Memo

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

   This Internet-Draft is submitted in full conformance with the
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   as an RFC and to translate it into languages other than English.

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   Copyright (c) 2018 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
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Table of Contents

   1. Introduction...................................................3
   2. Conventions used in this document..............................3
   3. Key Characteristics of SD-WAN Overlay Network..................4
   4. Overview of the BGP Extension for SD-WAN.......................8
   5. SD-WAN Over Tunnel NLRI Format................................10
   6. SD-WAN Tunnel Encapsulation Attribute sub-TLV:................10
      6.1. IPsec SA sub-TLV.........................................11
      6.2. EncapsExt sub-TLV........................................13
   7. SD-WAN Tunnel Advertisement Method:...........................14
   8. Manageability Considerations..................................15
   9. Security Considerations.......................................15

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   10. IANA Considerations..........................................15
   11. References...................................................16
      11.1. Normative References....................................16
      11.2. Informative References..................................16
   12. Acknowledgments..............................................17

1. Introduction

   The document defines a new BGP SAFI with a new NLRI in order to
   advertise a SD-WAN node's properties with other SD-WAN nodes through
   third party untrusted networks. The goal is for SD-WAN network to
   scale; enabling SD-WAN overlay among large number of SD-WAN nodes
   with few provisioning needed, and allow services to be carried by
   different SD-WAN transport networks based on user specified
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