API Guide

9. Configure EVPN for the VXLAN virtual network. Configure the EVPN instances using Auto EVI mode and Disable ASN in the
generated RT.
OS10(config)# evpn
OS10(config-evpn)# auto-evi
OS10(config-evpn)# disable-rt-asn
OS10(config-evpn)# exit
NOTE: Use the disable-rt-asn command to autoderive RT that does not include the ASN in the RT value. This
allows auto RT to be used even if the Clos leaf-spine design has separate ASN for each leaf node. Configure this
command only when all the VTEPs are OS10 switches.
10. Configure VLT.
• Configure a dedicated Layer 3 forwarding path through the other VLT peer for connectivity even if all spine links go down. This
VLAN interface would be unnumbered interface and used for iBGP peering with the other VLT peer.
OS10(config)# interface vlan4000
OS10(config-if-vl-4000)# no shutdown
OS10(config-if-vl-4000)# ipv6 nd max-ra-interval 4
OS10(config-if-vl-4000)# ipv6 nd min-ra-interval 3
OS10(config-if-vl-4000)# ipv6 nd send-ra
OS10(config-if-vl-4000)# exit
• Configure the VLT port channel.
OS10(config)# interface port-channel10
OS10(conf-if-po-10)# vlt-port-channel 10
OS10(conf-if-po-10)# exit
• Configure VLTi member links.
OS10(config)# interface ethernet1/1/3
OS10(conf-if-eth1/1/3)# no shutdown
OS10(conf-if-eth1/1/3)# no switchport
OS10(conf-if-eth1/1/3)# exit
OS10(config)# interface ethernet1/1/4
OS10(conf-if-eth1/1/4)# no shutdown
OS10(conf-if-eth1/1/4)# no switchport
OS10(conf-if-eth1/1/4)# exit
• Configure the VLT domain.
OS10(config)# vlt-domain 1
OS10(conf-vlt-1)# backup destination 10.16.150.2
OS10(conf-vlt-1)# discovery-interface ethernet1/1/3,1/1/4
OS10(conf-vlt-1)# vlt-mac aa:bb:cc:dd:ee:ff
OS10(conf-vlt-1)# exit
• Configure UFD with uplink VLT ports and downlink network ports.
OS10(config)# uplink-state-group 1
OS10(conf-uplink-state-group-1)# enable
OS10(conf-uplink-state-group-1)# downstream ethernet1/1/1-1/1/2
OS10(conf-uplink-state-group-1)# upstream port-channel10
OS10(conf-uplink-state-group-1)# exit
• Configure iBGP unnumbered peering between VLT peers with bothIPv4 and L2VPN EVPN address families.
OS10(config)# router bgp 201
OS10(config-router-bgp-201)# template ibgp_unified
OS10(config-router-template)# send-community extended
OS10(config-router-template)# address-family l2vpn evpn
OS10(config-router-bgp-template-af)# activate
OS10(config-router-bgp-template-af)# exit
OS10(config-router-template)# neighbor interface vlan4000
OS10(config-router-neighbor)# inherit template ibgp_unified inherit-type ibgp
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# exit
11. Configure IP routing in overlay network.
BGP EVPN for VXLAN
149