Users Guide

Table Of Contents
Example - VXLAN BGP EVPN symmetric IRB with unnumbered BGP
peering
The following BGP EVPN example uses a Clos leaf-spine topology with BGP over unnumbered interfaces.
The following explains how the network is configured:
External BGP (eBGP) over unnumbered interfaces is used to exchange both IPv4 routes and EVPN routes.
You need not configure IP addresses on links that connect Spine and Leaf switches. BGP Unnumbered peering works
without an IP address configuration on Spine-Leaf links.
The remote AS is autodiscovered from BGP Open messages.
All VTEPs perform Symmetric IRB routing. All spine nodes are in one autonomous system and each VTEP in the leaf network
belongs to different autonomous systems. Both Spine Switch 1 and Spine Switch 2 are in AS 101. For leaf nodes, VLT domain
1 is in AS 201; VLT domain 2 is in AS 202.
VXLAN
1253