BGP UPDATE for SDWAN Edge Discovery
draft-dunbar-idr-sdwan-edge-discovery-01
Network Working Group L. Dunbar
Internet Draft Futurewei
Intended status: Standard S. Hares
Expires: May 18, 2021 Hickory Hill Consulting
R. Raszuk
Bloomberg LP
K. Majumdar
CommScope
November 18, 2020
BGP UPDATE for SDWAN Edge Discovery
draft-dunbar-idr-sdwan-edge-discovery-01
Abstract
The document describes encoding of BGP UPDATE messages for the SDWAN
edge node discovery.
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 propagates the information to the intended
peers that are authorized to communicate via the SDWAN overlay
network.
Status of this Memo
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Internet-Draft BGP for SDWAN Edge Discovery November 2020
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This Internet-Draft will expire on Dec 18, 2020.
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Table of Contents
1. Introduction...................................................3
2. Conventions used in this document..............................3
3. Framework of SDWAN Edge Discovery..............................4
3.1. The Objectives of SDWAN Edge Discovery....................4
3.2. Basic Schemes.............................................5
3.3. Edge Node Discovery.......................................7
4. BGP UPDATE to Support SDWAN Segmentation.......................8
4.1. Constrained Propagation of Edge Capability................9
4.2. SDWAN Segmentation for Control Plane.....................10
4.3. SDWAN Segment Identifier in Data Plane...................11
5. Hybrid Underlay...............................................11
5.1. SDWAN-Hybrid Tunnel Encoding.............................11
5.2. Encoding Example.........................................14
5.2.1. Multiple IPsec SAs Sharing One Tunnel End Point.....14
5.2.2. Multiple IPsec SAs with different Tunnel End Points.15
6. Hybrid Underlay Detailed Attributes...........................16
6.1. SDWAN NLRI for Underlay Network Properties...............16
6.2. Extended Port Sub-TLV....................................18
6.3. ISP of the Underlay network Sub-TLV......................20
7. IPsec Security Association Property Sub-TLVs..................22
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7.1. Controller Facilitated IPsec Tunnels for SDWAN Networks..22
7.2. IPsec SA Nonce Sub-TLV...................................24
7.3. IPsec Public Key Sub-TLV.................................25
7.4. IPsec SA Proposal Sub-TLV................................26
7.5. Simplified IPsec Security Association sub-TLV............26
7.6. IPsec SA Encoding Examples...............................27
8. Error & Mismatch Handling.....................................28
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