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Dell EMC SmartFabric OS10 User Guide Release 10.5.0

PDF

Example: VXLAN BGP EVPN — Multiple AS topology

The following VXLAN with BGP EVPN example uses a Clos leaf-spine example. The individual switch configuration shows how to set up an end-to-end VXLAN. eBGP is used to exchange IP routes in the IP underlay network, and EVPN routes in the VXLAN overlay network. All VTEPs perform asymmetric IRB routing, in which:
  • IRB routing is performed only on ingress VTEPs.
  • Egress VTEPs perform IRB bridging.
In this example, each node in the spine network and each VTEP in the leaf network belongs to a different autonomous system. Spine switch 1 is in AS 101. Spine switch 2 is in AS 102. For leaf nodes, VLT domain 1 is in AS 99; VLT domain 2 is in AS 100.
  • On VTEPs 1 and 2: Access ports are assigned to the virtual network using a switch-scoped VLAN. EVPN instance along with RD and RT values are configured in manual mode.
  • On VTEPs 3 and 4: Access ports are assigned to the virtual network using a port-scoped VLAN. EVPN instance along with RD and RT values are configured in manual mode.
Figure 1. VXLAN BGP EVPN with multiple AS. VXLAN BGP EVPN with multiple AS
VXLAN BGP EVPN use case

VTEP 1 Leaf Switch

1. Configure a Loopback interface for the VXLAN underlay using same IP address as the VLT peer

OS10(config)# interface loopback0
OS10(conf-if-lo-0)# no shutdown
OS10(conf-if-lo-0)# ip address 192.168.1.1/32
OS10(conf-if-lo-0)# exit

2. Configure the Loopback interface as the VXLAN source tunnel interface

OS10(config)# nve
OS10(config-nve)# source-interface loopback0
OS10(config-nve)# exit

3. Configure VXLAN virtual networks 

OS10(config)# virtual-network 10000
OS10(config-vn-10000)# vxlan-vni 10000
OS10(config-vn-vxlan-vni)# exit
OS10(config-vn-10000)# exit
OS10(config)# virtual-network 20000
OS10(config-vn-20000)# vxlan-vni 20000
OS10(config-vn-vxlan-vni)# exit
OS10(config-vn-20000)# exit

4. Assign VLAN member interfaces to the virtual networks

Use a switch-scoped VLAN-to-VNI mapping: 

OS10(config)# interface vlan100
OS10(config-if-vl-100)# virtual-network 10000
OS10(config-if-vl-100)# no shutdown
OS10(config-if-vl-100)# exit
OS10(config)# interface vlan200
OS10(config-if-vl-200)# virtual-network 20000
OS10(config-if-vl-200)# no shutdown
OS10(config-if-vl-200)# exit

5. Configure access ports as VLAN members for a switch-scoped VLAN-to-VNI mapping

OS10(config)# interface port-channel10
OS10(conf-if-po-10)# no shutdown
OS10(conf-if-po-10)# switchport mode trunk
OS10(conf-if-po-10)# switchport trunk allowed vlan 100
OS10(conf-if-po-10)# no switchport access vlan
OS10(conf-if-po-10)# exit

OS10(config)# interface ethernet1/1/5
OS10(conf-if-eth1/1/5)# no shutdown
OS10(conf-if-eth1/1/5)# channel-group 10 mode active
OS10(conf-if-eth1/1/5)# no switchport
OS10(conf-if-eth1/1/5)# exit

OS10(config)# interface port-channel20
OS10(conf-if-po-20)# no shutdown
OS10(conf-if-po-20)# switchport mode trunk
OS10(conf-if-po-20)# switchport access vlan 200
OS10(conf-if-po-20)# exit

OS10(config)# interface ethernet1/1/6
OS10(conf-if-eth1/1/6)# no shutdown
OS10(conf-if-eth1/1/6)# channel-group 20 mode active
OS10(conf-if-eth1/1/6)# no switchport
OS10(conf-if-eth1/1/6)# exit

6. Configure upstream network-facing ports

OS10(config)# interface ethernet1/1/1
OS10(conf-if-eth1/1/1)# no shutdown
OS10(conf-if-eth1/1/1)# no switchport
OS10(conf-if-eth1/1/1)# mtu 1650
OS10(conf-if-eth1/1/1)# ip address 172.16.1.0/31
OS10(conf-if-eth1/1/1)# exit

OS10(config)# interface ethernet1/1/2
OS10(conf-if-eth1/1/2)# no shutdown
OS10(conf-if-eth1/1/2)# no switchport
OS10(conf-if-eth1/1/1)# mtu 1650
OS10(conf-if-eth1/1/2)# ip address 172.16.2.0/31
OS10(conf-if-eth1/1/2)# exit

7. Configure eBGP 

OS10(config)# router bgp 99
OS10(config-router-bgp-99)# router-id 172.16.0.1
OS10(config-router-bgp-99)# address-family ipv4 unicast
OS10(config-router-bgp-af)# redistribute connected
OS10(config-router-bgp-af)# exit

8. Configure eBGP for the IPv4 point-to-point peering

OS10(config-router-bgp-99)# neighbor 172.16.1.1
OS10(config-router-neighbor)# remote-as 101
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# exit
OS10(config-router-bgp-99)# neighbor 172.16.2.1
OS10(config-router-neighbor)# remote-as 102
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# exit
OS10(config-router-bgp-99)# exit

9. Configure a Loopback interface for BGP EVPN peering different from the VLT peer IP address

OS10(config)# interface loopback1 
OS10(conf-if-lo-1)# no shutdown
OS10(conf-if-lo-1)# ip address 172.16.0.1/32 
OS10(conf-if-lo-1)# exit

10. Configure BGP EVPN peering

OS10(config)# router bgp 99
OS10(config-router-bgp-99)# neighbor 172.201.0.1
OS10(config-router-neighbor)# remote-as 101
OS10(config-router-neighbor)# ebgp-multihop 4
OS10(config-router-neighbor)# send-community extended
OS10(config-router-neighbor)# update-source loopback1
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# address-family ipv4 unicast
OS10(config-router-bgp-neighbor-af)# no activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# address-family l2vpn evpn
OS10(config-router-bgp-neighbor-af)# activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# exit

OS10(config-router-bgp-99)# neighbor 172.202.0.1
OS10(config-router-neighbor)# remote-as 102
OS10(config-router-neighbor)# ebgp-multihop 4
OS10(config-router-neighbor)# send-community extended
OS10(config-router-neighbor)# update-source loopback1
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# address-family ipv4 unicast
OS10(config-router-bgp-neighbor-af)# no activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# address-family l2vpn evpn
OS10(config-router-bgp-neighbor-af)# activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# exit
OS10(config-router-bgp-100)# exit

11. Configure EVPN

Configure the EVPN instance with RD and RT values in manual mode: 

OS10(config)# evpn
OS10(config-evpn)# evi 10000
OS10(config-evpn-evi-10000)# vni 10000
OS10(config-evpn-evi-10000)# rd 192.168.1.1:10000
OS10(config-evpn-evi-10000)# route-target 99:10000 both
OS10(config-evpn-evi-10000)# route-target 100:10000 import
OS10(config-evpn-evi-10000)#exit

OS10(config-evpn)# evi 20000
OS10(config-evpn-evi-20000)# vni 20000
OS10(config-evpn-evi-20000)# rd 192.168.1.1:20000
OS10(config-evpn-evi-20000)# route-target 99:20000 both
OS10(config-evpn-evi-20000)# route-target 100:20000 import
OS10(config-evpn-evi-20000)#exit
OS10(config-evpn)#

12. Configure VLT

Configure a dedicated L3 underlay path to reach the VLT Peer in case of a network failure

OS10(config)# interface vlan4000
OS10(config-if-vl-4000)# no shutdown
OS10(config-if-vl-4000)# ip address 172.16.250.0/31
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

OS10(config)# interface port-channel20
OS10(conf-if-po-20)# vlt-port-channel 20
OS10(conf-if-po-20)# exit

Configure the VLTi member links

OOS10(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 10.16.150.1
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)# upstream port-channel20
OS10(conf-uplink-state-group-1)# exit

Configure iBGP IPv4 peering between VLT peers

OS10(config)# router bgp 99
OS10(config-router-bgp-99)# neighbor 172.16.250.1
OS10(config-router-neighbor)# remote-as 99
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# exit
OS10(config-router-bgp-99)# exit

13. Configure IP switching in the overlay network

Create a tenant VRF

OS10(config)# ip vrf tenant1
OS10(conf-vrf)# exit

Configure an anycast gateway MAC address

OS10(config)# ip virtual-router mac-address 00:01:01:01:01:01

Configure routing on the virtual networks

OS10(config)# interface virtual-network10000
OS10(conf-if-vn-10000)# ip vrf forwarding tenant1
OS10(conf-if-vn-10000)# ip address 10.1.0.231/16
OS10(conf-if-vn-10000)# ip virtual-router address 10.1.0.100
OS10(conf-if-vn-10000)# no shutdown
OS10(conf-if-vn-10000)# exit

OS10(config)# interface virtual-network20000
OS10(conf-if-vn-20000)# ip vrf forwarding tenant1
OS10(conf-if-vn-20000)# ip address 10.2.0.231/16
OS10(conf-if-vn-20000)# ip virtual-router address 10.2.0.100
OS10(conf-if-vn-20000)# no shutdown
OS10(conf-if-vn-20000)# exit

VTEP 2 Leaf Switch

1. Configure a Loopback interface for the VXLAN underlay using the same IP address as the VLT peer

OS10(config)# interface loopback0
OS10(conf-if-lo-0)# no shutdown
OS10(conf-if-lo-0)# ip address 192.168.1.1/32
OS10(conf-if-lo-0)# exit

2. Configure the Loopback interface as the VXLAN source tunnel interface

OS10(config)# nve
OS10(config-nve)# source-interface loopback0
OS10(config-nve)# exit

3. Configure the VXLAN virtual networks 

OS10(config)# virtual-network 10000
OS10(config-vn-10000)# vxlan-vni 10000
OS10(config-vn-vxlan-vni)# exit
OS10(config-vn)# exit
OS10(config)# virtual-network 20000
OS10(config-vn-20000)# vxlan-vni 20000
OS10(config-vn-vxlan-vni)# exit
OS10(config-vn-20000)# exit

4. Assign VLAN member interfaces to the virtual networks

Use a switch-scoped VLAN-to-VNI mapping: 

OS10(config)# interface vlan100
OS10(config-if-vl-100)# virtual-network 10000
OS10(config-if-vl-100)# no shutdown
OS10(config-if-vl-100)# exit
OS10(config)# interface vlan200
OS10(config-if-vl-200)# virtual-network 20000
OS10(config-if-vl-200)# no shutdown
OS10(config-if-vl-200)# exit

5. Configure access ports as VLAN members for a switch-scoped VLAN-to-VNI mapping

OS10(config)# interface port-channel10
OS10(conf-if-po-10)# no shutdown
OS10(conf-if-po-10)# switchport mode trunk
OS10(conf-if-po-10)# switchport trunk allowed vlan 100
OS10(conf-if-po-10)# no switchport access vlan
OS10(conf-if-po-10)# exit

OS10(config)# interface ethernet1/1/5
OS10(conf-if-eth1/1/5)# no shutdown
OS10(conf-if-eth1/1/5)# channel-group 10 mode active
OS10(conf-if-eth1/1/5)# no switchport
OS10(conf-if-eth1/1/5)# exit

OS10(config)# interface port-channel20
OS10(conf-if-po-20)# no shutdown
OS10(conf-if-po-20)# switchport mode trunk
OS10(conf-if-po-20)# switchport access vlan 200
OS10(conf-if-po-20)# exit

OS10(config)# interface ethernet1/1/6
OS10(conf-if-eth1/1/6)# no shutdown
OS10(conf-if-eth1/1/6)# channel-group 20 mode active
OS10(conf-if-eth1/1/6)# no switchport
OS10(conf-if-eth1/1/6)# exit

6. Configure upstream network-facing ports

OS10(config)# interface ethernet1/1/1
OS10(conf-if-eth1/1/1)# no shutdown
OS10(conf-if-eth1/1/1)# no switchport
OS10(conf-if-eth1/1/1)# mtu 1650
OS10(conf-if-eth1/1/1)# ip address 172.17.1.0/31
OS10(conf-if-eth1/1/1)# exit

OS10(config)# interface ethernet1/1/2
OS10(conf-if-eth1/1/2)# no shutdown
OS10(conf-if-eth1/1/2)# no switchport
OS10(conf-if-eth1/1/1)# mtu 1650
OS10(conf-if-eth1/1/2)# ip address 172.17.2.0/31
OS10(conf-if-eth1/1/2)# exit

7. Configure eBGP 

OS10(config)# router bgp 99
OS10(config-router-bgp-99)# router-id 172.17.0.1
OS10(config-router-bgp-99)# address-family ipv4 unicast
OS10(configure-router-bgp-af)# redistribute connected
OS10(configure-router-bgp-af)# exit

8. Configure eBGP for the IPv4 point-to-point peering

OS10(config-router-bgp-99)# neighbor 172.17.1.1
OS10(config-router-neighbor)# remote-as 101
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# exit

OS10(config-router-bgp-99)# neighbor 172.17.2.1
OS10(config-router-neighbor)# remote-as 102
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# exit
OS10(config-router-bgp-99)# exit

9. Configure a Loopback interface for BGP EVPN peering different from VLT peer IP address

OS10(config)# interface loopback1 
OS10(conf-if-lo-1)# no shutdown
OS10(conf-if-lo-1)# ip address 172.17.0.1/32 
OS10(conf-if-lo-1)# exit

10. Configure BGP EVPN peering

OS10(config)# router bgp 99
OS10(config-router-bgp-99)# neighbor 172.201.0.1
OS10(config-router-neighbor)# remote-as 101
OS10(config-router-neighbor)# ebgp-multihop 4
OS10(config-router-neighbor)# send-community extended
OS10(config-router-neighbor)# update-source loopback1
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# address-family ipv4 unicast
OS10(config-router-bgp-neighbor-af)# no activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# address-family l2vpn evpn
OS10(config-router-bgp-neighbor-af)# activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# exit

OS10(config-router-bgp-99)# neighbor 172.202.0.1
OS10(config-router-neighbor)# remote-as 102
OS10(config-router-neighbor)# ebgp-multihop 4
OS10(config-router-neighbor)# send-community extended
OS10(config-router-neighbor)# update-source loopback1
OS10(config-router-neighbor)# no shutdown
OS10(config-router-bgp-neighbor)# address-family ipv4 unicast
OS10(config-router-bgp-neighbor-af)# no activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# address-family l2vpn evpn
OS10(config-router-bgp-neighbor-af)# activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# exit
OS10(config-router-bgp-99)# exit

11. Configure EVPN

Configure the EVPN instance with RD and RT in manual configuration mode: 

OS10(config)# evpn
OS10(config-evpn)# evi 10000
OS10(config-evpn-evi-10000)# vni 10000
OS10(config-evpn-evi-10000)# rd 192.168.1.1:10000
OS10(config-evpn-evi-10000)# route-target 99:10000 both
OS10(config-evpn-evi-10000)# route-target 100:10000 import
OS10(config-evpn-evi-10000)#exit

OS10(config-evpn)# evi 20000
OS10(config-evpn-evi-20000)# vni 20000
OS10(config-evpn-evi-20000)# rd 192.168.1.1:20000
OS10(config-evpn-evi-20000)# route-target 99:20000 both
OS10(config-evpn-evi-20000)# route-target 100:20000 import
OS10(config-evpn-evi-20000)#exit
OS10(config-evpn)#

12. Configure VLT

Configure a dedicated L3 underlay path to reach the VLT Peer in case of a network failure

OS10(config)# interface vlan4000
OS10(config-if-vl-4000)# no shutdown
OS10(config-if-vl-4000)# ip address 172.16.250.1/31
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

OS10(config)# interface port-channel20
OS10(conf-if-po-20)# vlt-port-channel 20
OS10(conf-if-po-20)# exit

Configure VLTi member links

OOS10(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)# upstream port-channel20
OS10(conf-uplink-state-group-1)# exit

Configure iBGP IPv4 peering between VLT peers

OS10(config)# router bgp 99
OS10(config-router-bgp-99)# neighbor 172.16.250.0
OS10(config-router-neighbor)# remote-as 99
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# exit
OS10(config-router-bgp-99)# exit

13. Configure IP switching in overlay network

Create a tenant VRF

OS10(config)# ip vrf tenant1
OS10(conf-vrf)# exit

Configure an anycast gateway MAC address

OS10(config)# ip virtual-router mac-address 00:01:01:01:01:01

Configure routing on the virtual networks

OS10(config)# interface virtual-network10000
OS10(conf-if-vn-10000)# ip vrf forwarding tenant1
OS10(conf-if-vn-10000)# ip address 10.1.0.232/16
OS10(conf-if-vn-10000)# ip virtual-router address 10.1.0.100
OS10(conf-if-vn-10000)# no shutdown
OS10(conf-if-vn-10000)# exit

OS10(config)# interface virtual-network20000
OS10(conf-if-vn-20000)# ip vrf forwarding tenant1
OS10(conf-if-vn-20000)# ip address 10.2.0.232/16
OS10(conf-if-vn-20000)# ip virtual-router address 10.2.0.100
OS10(conf-if-vn-20000)# no shutdown
OS10(conf-if-vn-20000)# exit

VTEP 3 Leaf Switch

1. Configure a Loopback interface for the VXLAN underlay using same IP address as the VLT peer

OS10(config)# interface loopback0
OS10(conf-if-lo-0)# no shutdown
OS10(conf-if-lo-0)# ip address 192.168.2.1/32
OS10(conf-if-lo-0)# exit

2. Configure the Loopback interface as the VXLAN source tunnel interface

OS10(config)# nve
OS10(config-nve)# source-interface loopback0
OS10(config-nve)# exit

3. Configure VXLAN virtual networks 

OS10(config)# virtual-network 10000
OS10(config-vn-10000)# vxlan-vni 10000
OS10(config-vn-vxlan-vni)# exit
OS10(config-vn-10000)# exit

OS10(config)# virtual-network 20000
OS10(config-vn-20000)# vxlan-vni 20000
OS10(config-vn-vxlan-vni)# exit
OS10(config-vn-20000)# exit

4. Configure unused VLAN ID for untagged membership 

OS10(config)# virtual-network untagged-vlan 1000

5. Configure access ports as VLAN members for a port-scoped VLAN-to-VNI mapping

OS10(config)# interface port-channel10
OS10(conf-if-po-10)# no shutdown
OS10(conf-if-po-10)# switchport mode trunk
OS10(conf-if-po-10)# no switchport access vlan
OS10(conf-if-po-10)# exit

OS10(config)# interface ethernet1/1/5
OS10(conf-if-eth1/1/5)# no shutdown
OS10(conf-if-eth1/1/5)# channel-group 10 mode active
OS10(conf-if-eth1/1/5)# no switchport
OS10(conf-if-eth1/1/5)# exit

OS10(config)# interface port-channel20
OS10(conf-if-po-20)# no shutdown
OS10(conf-if-po-20)# switchport mode trunk
OS10(conf-if-po-20)# no switchport access vlan
OS10(conf-if-po-20)# exit

OS10(config)# interface ethernet1/1/6
OS10(conf-if-eth1/1/6)# no shutdown
OS10(conf-if-eth1/1/6)# channel-group 20 mode active
OS10(conf-if-eth1/1/6)# no switchport
OS10(conf-if-eth1/1/6)# exit

6. Add the access ports to virtual networks

OS10(config)# virtual-network 10000
OS10(config-vn-10000)# member-interface port-channel 10 vlan-tag 100
OS10(config-vn-10000)# exit

OS10(config)# virtual-network 20000
OS10(config-vn-20000)# member-interface port-channel 20 untagged
OS10(config-vn-20000)# exit

7. Configure upstream network-facing ports

OS10(config)# interface ethernet1/1/1
OS10(conf-if-eth1/1/1)# no shutdown
OS10(conf-if-eth1/1/1)# no switchport
OS10(conf-if-eth1/1/1)# mtu 1650
OS10(conf-if-eth1/1/1)# ip address 172.18.1.0/31
OS10(conf-if-eth1/1/1)# exit

OS10(config)# interface ethernet1/1/2
OS10(conf-if-eth1/1/2)# no shutdown
OS10(conf-if-eth1/1/2)# no switchport
OS10(conf-if-eth1/1/1)# mtu 1650
OS10(conf-if-eth1/1/2)# ip address 172.18.2.0/31
OS10(conf-if-eth1/1/2)# exit

8. Configure eBGP 

OS10(config)# router bgp 100
OS10(config-router-bgp-100)# router-id 172.18.0.1
OS10(config-router-bgp-100)# address-family ipv4 unicast
OS10(configure-router-bgp-af)# redistribute connected
OS10(configure-router-bgp-af)# exit

9. Configure eBGP for the IPv4 point-to-point peering

OS10(config-router-bgp-100)# neighbor 172.18.1.1
OS10(config-router-neighbor)# remote-as 101
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# exit

OS10(config-router-bgp-100)# neighbor 172.18.2.1
OS10(config-router-neighbor)# remote-as 102
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# exit
OS10(config-router-bgp-100)# exit

10. Configure a Loopback interface for BGP EVPN peering different from VLT peer IP address

OS10(config)# interface loopback1 
OS10(conf-if-lo-1)# no shutdown
OS10(conf-if-lo-1)# ip address 172.18.0.1/32 
OS10(conf-if-lo-1)# exit

11. Configure BGP EVPN peering

OS10(config)# router bgp 100
OS10(config-router-bgp-100)# neighbor 172.201.0.1
OS10(config-router-neighbor)# remote-as 101
OS10(config-router-neighbor)# ebgp-multihop 4
OS10(config-router-neighbor)# send-community extended
OS10(config-router-neighbor)# update-source loopback1
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# address-family ipv4 unicast
OS10(config-router-bgp-neighbor-af)# no activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# address-family l2vpn evpn
OS10(config-router-bgp-neighbor-af)# activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# exit

OS10(config-router-bgp-100)# neighbor 172.202.0.1
OS10(config-router-neighbor)# remote-as 102
OS10(config-router-neighbor)# ebgp-multihop 4
OS10(config-router-neighbor)# send-community extended
OS10(config-router-neighbor)# update-source loopback1
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# address-family ipv4 unicast
OS10(config-router-bgp-neighbor-af)# no activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# address-family l2vpn evpn
OS10(config-router-bgp-neighbor-af)# activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# exit
OS10(config-router-bgp-100)# exit

12. Configure EVPN

Configure the EVPN instance, RD, and RT in manual configuration mode: 

OS10(config)# evpn
OS10(config-evpn)# evi 10000
OS10(config-evpn-evi-10000)# vni 10000
OS10(config-evpn-evi-10000)# rd 192.168.2.1:10000
OS10(config-evpn-evi-10000)# route-target 99:10000 import
OS10(config-evpn-evi-10000)# route-target 100:10000 both
OS10(config-evpn-evi-10000)#exit

OS10(config-evpn)# evi 20000
OS10(config-evpn-evi-20000)# vni 20000
OS10(config-evpn-evi-20000)# rd 192.168.2.1:20000
OS10(config-evpn-evi-20000)# route-target 99:20000 import
OS10(config-evpn-evi-20000)# route-target 100:20000 both
OS10(config-evpn-evi-20000)#exit
OS10(config-evpn)#

13. Configure VLT

Configure a VLTi VLAN for the virtual network

OS10(config)# virtual-network 10000
OS10(config-vn-10000)# vlti-vlan 100
OS10(config-vn-10000)# exit

OS10(config)# virtual-network 20000
OS10(config-vn-20000)# vlti-vlan 200
OS10(config-vn-20000)# exit

Configure a dedicated L3 underlay path to reach the VLT Peer in case of a network failure

OS10(config)# interface vlan4000
OS10(config-if-vl-4000)# no shutdown
OS10(config-if-vl-4000)# ip address 172.16.250.10/31
OS10(config-if-vl-4000)# exit

Configure the VLT port channels

OS10(config)# interface port-channel10
OS10(conf-if-po-10)# vlt-port-channel 10
OS10(conf-if-po-10)# exit

OS10(config)# interface port-channel20
OS10(conf-if-po-20)# vlt-port-channel 20
OS10(conf-if-po-20)# exit

Configure VLTi member links

OOS10(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 10.16.150.3
OS10(conf-vlt-1)# discovery-interface ethernet1/1/3,1/1/4
OS10(conf-vlt-1)# vlt-mac aa:bb:cc:dd:ff:ee
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)# upstream port-channel20
OS10(conf-uplink-state-group-1)# exit

Configure iBGP IPv4 peering between VLT peers

OS10(config)# router bgp 100
OS10(config-router-bgp-100)# neighbor 172.16.250.11
OS10(config-router-neighbor)# remote-as 100
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# exit
OS10(config-router-bgp-100)# exit

14. Configure IP routing in the overlay network

Create the tenant VRF

OS10(config)# ip vrf tenant1
OS10(conf-vrf)# exit

Configure an anycast gateway MAC address

OS10(config)# ip virtual-router mac-address 00:01:01:01:01:01

Configure routing on the virtual networks

OS10(config)# interface virtual-network10000
OS10(conf-if-vn-10000)# ip vrf forwarding tenant1
OS10(conf-if-vn-10000)# ip address 10.1.0.233/16
OS10(conf-if-vn-10000)# ip virtual-router address 10.1.0.100
OS10(conf-if-vn-10000)# no shutdown
OS10(conf-if-vn-10000)# exit

OS10(config)# interface virtual-network20000
OS10(conf-if-vn-20000)# ip vrf forwarding tenant1
OS10(conf-if-vn-20000)# ip address 10.2.0.233/16
OS10(conf-if-vn-20000)# ip virtual-router address 10.2.0.100
OS10(conf-if-vn-20000)# no shutdown
OS10(conf-if-vn-20000)# exit

VTEP 4 Leaf Switch

1. Configure a Loopback interface for the VXLAN underlay using same IP address as the VLT peer

OS10(config)# interface loopback0
OS10(conf-if-lo-0)# no shutdown
OS10(conf-if-lo-0)# ip address 192.168.2.1/32
OS10(conf-if-lo-0)# exit

2. Configure the Loopback interface as the VXLAN source tunnel interface

OS10(config)# nve
OS10(config-nve)# source-interface loopback0
OS10(config-nve)# exit

3. Configure the VXLAN virtual networks 

OS10(config)# virtual-network 10000
OS10(config-vn-10000)# vxlan-vni 10000
OS10(config-vn-vxlan-vni)# exit
OS10(config-vn-10000)# exit

OS10(config)# virtual-network 20000
OS10(config-vn-20000)# vxlan-vni 20000
OS10(config-vn-vxlan-vni)# exit
OS10(config-vn-20000)# exit

4. Configure the unused VLAN ID for untagged membership

OS10(config)# virtual-network untagged-vlan 1000

5. Configure access ports as VLAN members for a port-scoped VLAN-to-VNI mapping

OS10(config)# interface port-channel10
OS10(conf-if-po-10)# no shutdown
OS10(conf-if-po-10)# switchport mode trunk
OS10(conf-if-po-10)# no switchport access vlan
OS10(conf-if-po-10)# exit

OS10(config)# interface ethernet1/1/5
OS10(conf-if-eth1/1/5)# no shutdown
OS10(conf-if-eth1/1/5)# channel-group 10 mode active
OS10(conf-if-eth1/1/5)# no switchport
OS10(conf-if-eth1/1/5)# exit

OS10(config)# interface port-channel20
OS10(conf-if-po-20)# no shutdown
OS10(conf-if-po-20)# switchport mode trunk
OS10(conf-if-po-20)# no switchport access vlan
OS10(conf-if-po-20)# exit

OS10(config)# interface ethernet1/1/6
OS10(conf-if-eth1/1/6)# no shutdown
OS10(conf-if-eth1/1/6)# channel-group 20 mode active
OS10(conf-if-eth1/1/6)# no switchport
OS10(conf-if-eth1/1/6)# exit

6. Add the access ports to the virtual networks

OS10(config)# virtual-network 10000
OS10(config-vn-10000)# member-interface port-channel 10 vlan-tag 100
OS10(config-vn)# exit

OS10(config)# virtual-network 20000
OS10(config-vn-20000)# member-interface port-channel 20 untagged
OS10(config-vn)# exit

7. Configure upstream network-facing ports

OS10(config)# interface ethernet1/1/1
OS10(conf-if-eth1/1/1)# no shutdown
OS10(conf-if-eth1/1/1)# no switchport
OS10(conf-if-eth1/1/1)# mtu 1650
OS10(conf-if-eth1/1/1)# ip address 172.19.1.0/31
OS10(conf-if-eth1/1/1)# exit

OS10(config)# interface ethernet1/1/2
OS10(conf-if-eth1/1/2)# no shutdown
OS10(conf-if-eth1/1/2)# no switchport
OS10(conf-if-eth1/1/2)# mtu 1650
OS10(conf-if-eth1/1/2)# ip address 172.19.2.0/31
OS10(conf-if-eth1/1/2)# exit

8. Configure eBGP 

OS10(config)# router bgp 100
OS10(config-router-bgp-100)# router-id 172.19.0.1
OS10(config-router-bgp-100)# address-family ipv4 unicast
OS10(configure-router-bgp-af)# redistribute connected
OS10(configure-router-bgp-af)# exit

9. Configure eBGP for the IPv4 point-to-point peering

OS10(config-router-bgp-100)# neighbor 172.19.1.1
OS10(config-router-neighbor)# remote-as 101
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# exit

OS10(config-router-bgp-100)# neighbor 172.19.2.1
OS10(config-router-neighbor)# remote-as 102
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# exit
OS10(config-router-bgp-100)# exit

10. Configure a Loopback interface for BGP EVPN peering different from the VLT peer IP address

OS10(config)# interface loopback1 
OS10(conf-if-lo-1)# no shutdown
OS10(conf-if-lo-1)# ip address 172.19.0.1/32 
OS10(conf-if-lo-1)# exit

11. Configure BGP EVPN peering

OS10(config)# router bgp 100
OS10(config-router-bgp-100)# neighbor 172.201.0.1
OS10(config-router-neighbor)# remote-as 101
OS10(config-router-neighbor)# ebgp-multihop 4
OS10(config-router-neighbor)# send-community extended
OS10(config-router-neighbor)# update-source loopback1
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# address-family ipv4 unicast
OS10(config-router-bgp-neighbor-af)# no activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# address-family l2vpn evpn
OS10(config-router-bgp-neighbor-af)# activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# exit

OS10(config-router-bgp-100)# neighbor 172.202.0.1
OS10(config-router-neighbor)# remote-as 102
OS10(config-router-neighbor)# ebgp-multihop 4
OS10(config-router-neighbor)# send-community extended
OS10(config-router-neighbor)# update-source loopback1
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# address-family ipv4 unicast
OS10(config-router-bgp-neighbor-af)# no activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# address-family l2vpn evpn
OS10(config-router-bgp-neighbor-af)# activate
OS10(config-router-bgp-neighbor-af)# exit
OS10(config-router-neighbor)# exit
OS10(config-router-bgp-100)# exit

12. Configure EVPN

Configure the EVPN instance,RD, RT in manual configuration mode: 

OS10(config)# evpn
OS10(config-evpn)# evi 10000
OS10(config-evpn-evi-10000)# vni 10000
OS10(config-evpn-evi-10000)# rd 192.168.2.1:10000
OS10(config-evpn-evi-10000)# route-target 99:10000 import
OS10(config-evpn-evi-10000)# route-target 100:10000 both
OS10(config-evpn-evi-10000)#exit

OS10(config-evpn)# evi 20000
OS10(config-evpn-evi-20000)# vni 20000
OS10(config-evpn-evi-20000)# rd 192.168.2.1:20000
OS10(config-evpn-evi-20000)# route-target 99:20000 import
OS10(config-evpn-evi-20000)# route-target 100:20000 both
OS10(config-evpn-evi-20000)#exit
OS10(config-evpn)#

13. Configure VLT

Configure a VLTi VLAN for the virtual network

OS10(config)# virtual-network 10000
OS10(config-vn-10000)# vlti-vlan 100
OS10(config-vn-10000)# exit

OS10(config)# virtual-network 20000
OS10(conf-vn-20000)# vlti-vlan 200
OS10(conf-vn-20000)# exit

Configure a dedicated L3 underlay path to reach the VLT Peer in case of a network failure

OS10(config)# interface vlan4000
OS10(config-if-vl-4000)# no shutdown
OS10(config-if-vl-4000)# ip address 172.16.250.11/31
OS10(config-if-vl-4000)# exit

Configure VLT port channels

OS10(config)# interface port-channel10
OS10(conf-if-po-10)# vlt-port-channel 10
OS10(conf-if-po-10)# exit

OS10(config)# interface port-channel20
OS10(conf-if-po-20)# vlt-port-channel 20
OS10(conf-if-po-20)# exit

Configure VLTi member links

OOS10(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 10.16.150.4
OS10(conf-vlt-1)# discovery-interface ethernet1/1/3,1/1/4
OS10(conf-vlt-1)# vlt-mac aa:bb:cc:dd:ff:ee
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)# upstream port-channel20
OS10(conf-uplink-state-group-1)# exit

Configure iBGP IPv4 peering between the VLT peers

OS10(config)# router bgp 100
OS10(config-router-bgp-100)# neighbor 172.16.250.10
OS10(config-router-neighbor)# remote-as 100
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# exit
OS10(config-router-bgp-100)# exit

14. Configure IP routing in the overlay network

Create a tenant VRF

OS10(config)# ip vrf tenant1
OS10(conf-vrf)# exit

Configure an anycast gateway MAC address

OS10(config)# ip virtual-router mac-address 00:01:01:01:01:01

Configure routing on the virtual networks

OS10(config)# interface virtual-network10000
OS10(conf-if-vn-10000)# ip vrf forwarding tenant1
OS10(conf-if-vn-10000)# ip address 10.1.0.234/16
OS10(conf-if-vn-10000)# ip virtual-router address 10.1.0.100
OS10(conf-if-vn-10000)# no shutdown
OS10(conf-if-vn-10000)# exit

OS10(config)# interface virtual-network20000
OS10(conf-if-vn-20000)# ip vrf forwarding tenant1
OS10(conf-if-vn-20000)# ip address 10.2.0.234/16
OS10(conf-if-vn-20000)# ip virtual-router address 10.2.0.100
OS10(conf-if-vn-20000)# no shutdown
OS10(conf-if-vn-20000)# exit

Spine Switch 1

1. Configure downstream ports on underlay links to the leaf switches 

OS10(config)# interface ethernet1/1/1
OS10(conf-if-eth1/1/1)# no shutdown
OS10(conf-if-eth1/1/1)# no switchport
OS10(conf-if-eth1/1/1)# ip address 172.16.1.1/31
OS10(conf-if-eth1/1/1)# exit
OS10(config)# interface ethernet1/1/2
OS10(conf-if-eth1/1/2)# no shutdown
OS10(conf-if-eth1/1/2)# no switchport
OS10(conf-if-eth1/1/2)# ip address 172.17.1.1/31
OS10(conf-if-eth1/1/2)# exit
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)# ip address 172.18.1.1/31
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)# ip address 172.19.1.1/31
OS10(conf-if-eth1/1/4)# exit

2. Configure eBGP 

OS10(config)# router bgp 101
OS10(config-router-bgp-101)# router-id 172.201.0.1
OS10(config-router-bgp-101)# address-family ipv4 unicast
OS10(configure-router-bgpv4-af)# redistribute connected
OS10(configure-router-bgpv4-af)# exit

3. Configure eBGP IPv4 peer sessions on the P2P links 

OS10(conf-router-bgp-101)# neighbor 172.16.1.0
OS10(conf-router-neighbor)# remote-as 99
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# exit

OS10(conf-router-bgp-101)# neighbor 172.17.1.0
OS10(conf-router-neighbor)# remote-as 99
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# exit

OS10(conf-router-bgp-101)# neighbor 172.18.1.0
OS10(conf-router-neighbor)# remote-as 100
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# exit

OS10(conf-router-bgp-101)# neighbor 172.19.1.0
OS10(conf-router-neighbor)# remote-as 100
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# exit
OS10(conf-router-bgp-101)# exit

4. Configure a Loopback interface for BGP EVPN peering

OS10(config)# interface loopback1
OS10(conf-if-lo-1)# no shutdown
OS10(conf-if-lo-1)# ip address 172.201.0.1/32
OS10(conf-if-lo-1)# exit

5. Configure BGP EVPN peer sessions 

OS10(config)# router bgp 101
OS10(conf-router-bgp-101)# neighbor 172.16.0.1
OS10(conf-router-neighbor)# ebgp-multihop 4
OS10(conf-router-neighbor)# remote-as 99
OS10(conf-router-neighbor)# send-community extended
OS10(conf-router-neighbor)# update-source loopback1
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# address-family ipv4 unicast
OS10(conf-router-neighbor-af)# no activate
OS10(conf-router-neighbor-af)# exit
OS10(conf-router-neighbor)# address-family l2vpn evpn
OS10(conf-router-neighbor-af)# activate
OS10(conf-router-neighbor-af)# exit

OS10(conf-router-bgp-101)# neighbor 172.17.0.1
OS10(conf-router-neighbor)# ebgp-multihop 4
OS10(conf-router-neighbor)# remote-as 99
OS10(conf-router-neighbor)# send-community extended
OS10(conf-router-neighbor)# update-source loopback1
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# address-family ipv4 unicast
OS10(conf-router-neighbor-af)# no activate
OS10(conf-router-neighbor-af)# exit
OS10(conf-router-neighbor)# address-family l2vpn evpn
OS10(conf-router-neighbor-af)# activate
OS10(conf-router-neighbor-af)# exit

OS10(conf-router-bgp-101)# neighbor 172.18.0.1
OS10(conf-router-neighbor)# ebgp-multihop 4
OS10(conf-router-neighbor)# remote-as 100
OS10(conf-router-neighbor)# send-community extended
OS10(conf-router-neighbor)# update-source loopback1
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# address-family ipv4 unicast
OS10(conf-router-neighbor-af)# no activate
OS10(conf-router-neighbor-af)# exit
OS10(conf-router-neighbor)# address-family l2vpn evpn
OS10(conf-router-neighbor-af)# activate
OS10(conf-router-neighbor-af)# exit

OS10(conf-router-bgp-101)# neighbor 172.19.0.1
OS10(conf-router-neighbor)# ebgp-multihop 4
OS10(conf-router-neighbor)# remote-as 100
OS10(conf-router-neighbor)# send-community extended
OS10(conf-router-neighbor)# update-source loopback1
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# address-family ipv4 unicast
OS10(conf-router-neighbor-af)# no activate
OS10(conf-router-neighbor-af)# exit
OS10(conf-router-neighbor)# address-family l2vpn evpn
OS10(conf-router-neighbor-af)# activate
OS10(conf-router-neighbor-af)# exit

Spine Switch 2

1. Configure downstream ports on the underlay links to the leaf switches 

OS10(config)# interface ethernet1/1/1
OS10(conf-if-eth1/1/1)# no shutdown
OS10(conf-if-eth1/1/1)# no switchport
OS10(conf-if-eth1/1/1)# ip address 172.16.2.1/31
OS10(conf-if-eth1/1/1)# exit
OS10(config)# interface ethernet1/1/2
OS10(conf-if-eth1/1/2)# no shutdown
OS10(conf-if-eth1/1/2)# no switchport
OS10(conf-if-eth1/1/2)# ip address 172.17.2.1/31
OS10(conf-if-eth1/1/2)# exit
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)# ip address 172.18.2.1/31
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)# ip address 172.19.2.1/31
OS10(conf-if-eth1/1/4)# exit

2. Configure eBGP 

OS10(config)# router bgp 102
OS10(config-router-bgp-102)# router-id 172.202.0.1
OS10(config-router-bgp-102)# address-family ipv4 unicast
OS10(configure-router-bgpv4-af)# redistribute connected
OS10(configure-router-bgpv4-af)# exit

3. Configure eBGP IPv4 peer sessions on the P2P links 

OS10(conf-router-bgp-102)# neighbor 172.16.2.0
OS10(conf-router-neighbor)# remote-as 99
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# exit

OS10(conf-router-bgp-102)# neighbor 172.17.2.0
OS10(conf-router-neighbor)# remote-as 99
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# exit

OS10(conf-router-bgp-102)# neighbor 172.18.2.0
OS10(conf-router-neighbor)# remote-as 100
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# exit

OS10(conf-router-bgp-102)# neighbor 172.19.2.0
OS10(conf-router-neighbor)# remote-as 100
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# exit
OS10(conf-router-bgp-102)# exit

4. Configure a Loopback interface for BGP EVPN peering

OS10(config)# interface loopback1
OS10(conf-if-lo-1)# no shutdown
OS10(conf-if-lo-1)# ip address 172.202.0.1/32
OS10(conf-if-lo-1)# exit

5. Configure BGP EVPN peer sessions 

OS10(config)# router bgp 102
OS10(conf-router-bgp-102)# neighbor 172.16.0.1
OS10(conf-router-neighbor)# ebgp-multihop 4
OS10(conf-router-neighbor)# remote-as 99
OS10(conf-router-neighbor)# send-community extended
OS10(conf-router-neighbor)# update-source loopback1
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# address-family ipv4 unicast
OS10(conf-router-neighbor-af)# no activate
OS10(conf-router-neighbor-af)# exit
OS10(conf-router-neighbor)# address-family l2vpn evpn
OS10(conf-router-neighbor-af)# activate
OS10(conf-router-neighbor-af)# exit

OS10(conf-router-bgp-102)# neighbor 172.17.0.1
OS10(conf-router-neighbor)# ebgp-multihop 4
OS10(conf-router-neighbor)# remote-as 99
OS10(conf-router-neighbor)# send-community extended
OS10(conf-router-neighbor)# update-source loopback1
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# address-family ipv4 unicast
OS10(conf-router-neighbor-af)# no activate
OS10(conf-router-neighbor-af)# exit
OS10(conf-router-neighbor)# address-family l2vpn evpn
OS10(conf-router-neighbor-af)# activate
OS10(conf-router-neighbor-af)# exit

OS10(conf-router-bgp-102)# neighbor 172.18.0.1
OS10(conf-router-neighbor)# ebgp-multihop 4
OS10(conf-router-neighbor)# remote-as 100
OS10(conf-router-neighbor)# send-community extended
OS10(conf-router-neighbor)# update-source loopback1
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# address-family ipv4 unicast
OS10(conf-router-neighbor-af)# no activate
OS10(conf-router-neighbor-af)# exit
OS10(conf-router-neighbor)# address-family l2vpn evpn
OS10(conf-router-neighbor-af)# activate
OS10(conf-router-neighbor-af)# exit

OS10(conf-router-bgp-102)# neighbor 172.19.0.1
OS10(conf-router-neighbor)# ebgp-multihop 4
OS10(conf-router-neighbor)# remote-as 100
OS10(conf-router-neighbor)# send-community extended
OS10(conf-router-neighbor)# update-source loopback1
OS10(conf-router-neighbor)# no shutdown
OS10(conf-router-neighbor)# address-family ipv4 unicast
OS10(conf-router-neighbor-af)# no activate
OS10(conf-router-neighbor-af)# exit
OS10(conf-router-neighbor)# address-family l2vpn evpn
OS10(conf-router-neighbor-af)# activate
OS10(conf-router-neighbor-af)# exit

Verify VXLAN with BGP EVPN — Multiple AS topology

1. Verify virtual network configurations 

LEAF1# show virtual-network 
Codes: DP - MAC-learn Dataplane, CP - MAC-learn Controlplane, UUD - Unknown-Unicast-Drop 
Virtual Network: 10000 
   Members: 
      VLAN 100: port-channel10, port-channel1000 
   VxLAN Virtual Network Identifier: 10000 
      Source Interface: loopback0(192.168.1.1) 
      Remote-VTEPs (flood-list): 192.168.2.1(CP) 

Virtual Network: 20000 
   Members: 
      Untagged: port-channel20 
   VLAN 200: port-channel1000 
      VxLAN Virtual Network Identifier: 20000 
      Source Interface: loopback0(192.168.1.1) 
      Remote-VTEPs (flood-list): 192.168.2.1(CP) 
LEAF1#

2. Verify EVPN configurations and EVPN parameters 

LEAF1# show evpn evi 

EVI : 10000, State : up 
  Bridge-Domain       : Virtual-Network 10000, VNI 10000 
  Route-Distinguisher : 1:192.168.1.1:10000 
  Route-Targets       : 0:99:10000 both, 0:100:10000 import 
  Inclusive Multicast : 192.168.2.1 
  IRB                 : Enabled(tenant1) 

EVI : 20000, State : up 
  Bridge-Domain       : Virtual-Network 20000, VNI 20000 
  Route-Distinguisher : 1:192.168.1.1:20000 
  Route-Targets       : 0:99:10000 both, 0:100:10000 import 
  Inclusive Multicast : 192.168.2.1 
  IRB                 : Enabled(tenant1) 
LEAF1#

3. Verify BGP EVPN neighborship between leaf and spine nodes 

LEAF1# show ip bgp l2vpn evpn summary 
BGP router identifier 172.16.0.1 local AS number 99 
Neighbor     AS   MsgRcvd  MsgSent  Up/Down   State/Pfx 
172.201.0.1  101  1132     1116     13:29:00  27 
172.202.0.1  102  1131     1118     13:29:02  28 
LEAF1#

4. Check connectivity between host A and host B 

root@HOST-A:~# ping 10.2.0.10 -c 5 
PING 10.2.0.10 (10.2.0.10) 56(84) bytes of data. 
64 bytes from 10.2.0.10: icmp_seq=1 ttl=63 time=0.824 ms 
64 bytes from 10.2.0.10: icmp_seq=2 ttl=63 time=0.847 ms 
64 bytes from 10.2.0.10: icmp_seq=3 ttl=63 time=0.835 ms 
64 bytes from 10.2.0.10: icmp_seq=4 ttl=63 time=0.944 ms 
64 bytes from 10.2.0.10: icmp_seq=5 ttl=63 time=0.806 ms 

--- 10.2.0.10 ping statistics --- 
5 packets transmitted, 5 received, 0% packet loss, time 4078ms 
rtt min/avg/max/mdev = 0.806/0.851/0.944/0.051 ms 
root@HOST-A:~#

5. Check connectivity between host A and host C 

root@HOST-A:~# ping 10.1.0.20 -c 5 
PING 10.1.0.20 (10.1.0.20) 56(84) bytes of data. 
64 bytes from 10.1.0.20: icmp_seq=1 ttl=64 time=0.741 ms 
64 bytes from 10.1.0.20: icmp_seq=2 ttl=64 time=0.737 ms 
64 bytes from 10.1.0.20: icmp_seq=3 ttl=64 time=0.772 ms 
64 bytes from 10.1.0.20: icmp_seq=4 ttl=64 time=0.799 ms 
64 bytes from 10.1.0.20: icmp_seq=5 ttl=64 time=0.866 ms 

--- 10.1.0.20 ping statistics --- 
5 packets transmitted, 5 received, 0% packet loss, time 4061ms 
rtt min/avg/max/mdev = 0.737/0.783/0.866/0.047 ms 
root@HOST-A:~#

6. Check connectivity between host A and host D 

root@HOST-A:~# ping 10.2.0.20 -c 5 
PING 10.2.0.20 (10.2.0.20) 56(84) bytes of data. 
64 bytes from 10.2.0.20: icmp_seq=1 ttl=63 time=0.707 ms 
64 bytes from 10.2.0.20: icmp_seq=2 ttl=63 time=0.671 ms 
64 bytes from 10.2.0.20: icmp_seq=3 ttl=63 time=0.687 ms 
64 bytes from 10.2.0.20: icmp_seq=4 ttl=63 time=0.640 ms 
64 bytes from 10.2.0.20: icmp_seq=5 ttl=63 time=0.644 ms 

--- 10.2.0.20 ping statistics --- 
5 packets transmitted, 5 received, 0% packet loss, time 4089ms 
rtt min/avg/max/mdev = 0.640/0.669/0.707/0.041 ms 
root@HOST-A:~#
NOTE Follow Steps 1 to 6 to check ping connectivity between combinations of other hosts, and between hosts through different virtual-network IP addresses.

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