BGP Usage for SDWAN Overlay Networks
draft-ietf-bess-bgp-sdwan-usage-02

Document Type Active Internet-Draft (bess WG)
Authors Linda Dunbar  , Jim Guichard  , Ali Sajassi  , John Drake  , Basil Najem  , David Carrel 
Last updated 2021-01-22
Replaces draft-dunbar-bess-bgp-sdwan-usage
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Network Working Group                                         L. Dunbar
Internet Draft                                              J. Guichard
Intended status: Informational                                Futurewei
Expires: July 22, 2021                                     Ali Sajassi
                                                                  Cisco
                                                               J. Drake
                                                                Juniper
                                                               B. Najem
                                                            Bell Canada
                                                         Ayan Barnerjee
                                                              D. Carrel
                                                        IPsec Research

                                                       January 22, 2021

                   BGP Usage for SDWAN Overlay Networks
                    draft-ietf-bess-bgp-sdwan-usage-02

Abstract

   The document discusses the usage and applicability of BGP as control
   plane for multiple SDWAN scenarios. The goal of the document is to
   demonstrate how BGP-based control plane is used for large scale
   SDWAN overlay networks with little manual intervention.

   SDWAN edge nodes are commonly interconnected by multiple underlay
   networks which can be owned and managed by different network
   providers.

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
   provisions of BCP 78 and BCP 79. This document may not be modified,
   and derivative works of it may not be created, except to publish it
   as an RFC and to translate it into languages other than English.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that

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   other groups may also distribute working documents as Internet-
   Drafts.

   Internet-Drafts are draft documents valid for a maximum of six
   months and may be updated, replaced, or obsoleted by other documents
   at any time.  It is inappropriate to use Internet-Drafts as
   reference material or to cite them other than as "work in progress."

   The list of current Internet-Drafts can be accessed at
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   The list of Internet-Draft Shadow Directories can be accessed at
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   This Internet-Draft will expire on July 22, 2021.

Copyright Notice

   Copyright (c) 2021 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
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document. Please review these documents
   carefully, as they describe your rights and restrictions with
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   document must include Simplified BSD License text as described in
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   warranty as described in the Simplified BSD License.

Table of Contents

   1. Introduction...................................................3
   2. Conventions used in this document..............................4
   3. Use Case Scenario Description and Requirements.................5
      3.1. Requirements..............................................6
         3.1.1. Supporting Multiple SDWAN Segmentations..............6
         3.1.2. Client Service Requirement...........................6
         3.1.3. Application Flow Based Segmentation..................7
         3.1.4. Zero Touch Provisioning..............................8
         3.1.5. Constrained Propagation of SDWAN Edge Properties.....9

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      3.2. Scenario #1: Homogeneous WAN.............................10
      3.3. Scenario #2: Hybrid WAN Underlay.........................11
      3.4. Scenario #3: Private VPN PE based SDWAN..................13
   4. BGP Walk Through..............................................14
      4.1. BGP Walk Through for Homogeneous SDWAN...................14
      4.2. BGP Walk Through for Hybrid WAN Underlay.................16
      4.3. BGP Walk Through for Application Flow Based Segmentation.17
      4.4. Client Service Provisioning Model........................18
      4.5. Benefit of Using Recursive Next Hop Resolution...........19
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