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Dell EMC SmartFabric OS10 User Guide Release 10.5.0

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Example: VXLAN with static VTEP

This example uses a typical Clos leaf-spine topology with static VXLAN tunnel endpoints (VTEPs) in VLT dual-homing domains. The individual switch configuration shows how to set up an end-to-end VXLAN. The underlay IP network routes advertise using OSPF.
  • On VTEPs 1 and 2, access ports are assigned to the virtual network using a switch-scoped VLAN configuration.
  • On VTEPs 3 and 4, access ports are assigned to the virtual network using a port-scoped VLAN configuration.
  • Overlay routing between hosts in different IP subnets is configured on the VTEPs.
Figure 1. Static VXLAN use case. Static VXLAN use case
Static VXLAN use case

VTEP 1 Leaf Switch

1. Configure the underlay OSPF protocol

Do not configure the same IP address for the router ID and the source loopback interface in Step 2.

OS10(config)# router ospf 1
OS10(config-router-ospf-1)# router-id 172.16.0.1
OS10(config-router-ospf-1)# exit

2. Configure a Loopback interface 

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)# ip ospf 1 area 0.0.0.0
OS10(conf-if-lo-0)# exit

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

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

4. Configure VXLAN virtual networks with a static VTEP

OS10(config)# virtual-network 10000
OS10(config-vn-10000)# vxlan-vni 10000
OS10(config-vn-vxlan-vni)# remote-vtep 192.168.2.1
OS10(config-vn-vxlan-vni-remote-vtep)# exit
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)# remote-vtep 192.168.2.1
OS10(config-vn-vxlan-vni-remote-vtep)# exit
OS10(config-vn-vxlan-vni)# exit
OS10(config-vn-20000)# exit

5. Assign VLAN member interfaces to 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-100)# virtual-network 20000
OS10(config-if-vl-100)# no shutdown
OS10(config-if-vl-100)# exit

6. Configure access ports as VLAN members for 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)# 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 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

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 172.16.1.0/31
OS10(conf-if-eth1/1/1)# ip ospf 1 area 0.0.0.0
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)# ip ospf 1 area 0.0.0.0
OS10(conf-if-eth1/1/2)# exit

8. Configure VLT

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

OS10(config)# interface vlan4000
OS10(config-if-vl-4000)# no shutdown
OS10(config-if-vl-4000)# ip address 172.16.250.1/30
OS10(config-if-vl-4000)# ip ospf 1 area 0.0.0.0
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

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 10.16.150.1
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

9. Configure overlay IP routing

Create the tenant VRF

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

Configure the anycast L3 gateway MAC address for all VTEPs

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

Configure routing with an anycast gateway IP address for each virtual network

OS10(config)# interface virtual-network 10000
OS10(config-if-vn-10000)# ip vrf forwarding tenant1
OS10(config-if-vn-10000)# ip address 10.1.0.231/16
OS10(config-if-vn-10000)# ip virtual-router address 10.1.0.100
OS10(config-if-vn-10000)# no shutdown
OS10(config-if-vn-10000)# exit
OS10(config)# interface virtual-network 20000
OS10(config-if-vn-20000)# ip vrf forwarding tenant1
OS10(config-if-vn-20000)# ip address 10.2.0.231/16
OS10(config-if-vn-20000)# ip virtual-router address 10.2.0.100
OS10(config-if-vn-20000)# no shutdown
OS10(config-if-vn-20000)# exit

VTEP 2 Leaf Switch

1. Configure the underlay OSPF protocol

Do not configure the same router ID on other VTEP switches.

OS10(config)# router ospf 1
OS10(config-router-ospf-1)# router-id 172.17.0.1
OS10(config-router-ospf-1)# exit

2. Configure a Loopback interface

The source-interface IP address must be same as the source-interface IP address on 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)# ip ospf 1 area 0.0.0.0
OS10(conf-if-lo-0)# exit

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

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

4. Configure VXLAN virtual networks with a static VTEP

OS10(config)# virtual-network 10000
OS10(config-vn-10000)# vxlan-vni 10000
OS10(config-vn-vxlan-vni)# remote-vtep 192.168.2.1
OS10(config-vn-vxlan-vni-remote-vtep)# exit
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)# remote-vtep 192.168.2.1
OS10(config-vn-vxlan-vni-remote-vtep)# exit
OS10(config-vn-vxlan-vni)# exit
OS10(config-vn-20000)# exit

5. Assign a switch-scoped VLAN to a virtual network

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-100)# virtual-network 20000
OS10(config-if-vl-100)# no shutdown
OS10(config-if-vl-100)# exit

6. Configure access ports as VLAN members

OS10(config)# interface port-channel10
OS10(conf-if-po-10)# no shutdown
OS10(conf-if-po-10)# switchport mode access
OS10(conf-if-po-10)# switchport access vlan 200
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 access
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

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 172.17.1.0/31
OS10(conf-if-eth1/1/1)# ip ospf 1 area 0.0.0.0
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)# ip ospf 1 area 0.0.0.0
OS10(conf-if-eth1/1/2)# exit

8. Configure VLT

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

OS10(config)# interface vlan4000
OS10(config-if-vl-4000)# no shutdown
OS10(config-if-vl-4000)# ip address 172.16.250.2/30
OS10(config-if-vl-4000)# ip ospf 1 area 0.0.0.0
OS10(config-if-vl-4000)# exit

Configure a 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

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 a 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

9. Configure overlay IP routing

Create a tenant VRF

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

Configure an anycast L3 gateway MAC address for all VTEPs 

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

Configure routing with anycast gateway IP address for each virtual network

OS10(config)# interface virtual-network 10000
OS10(config-if-vn-10000)# ip vrf forwarding tenant1
OS10(config-if-vn-10000)# ip address 10.1.0.232/16
OS10(config-if-vn-10000)# ip virtual-router address 10.1.0.100
OS10(config-if-vn-10000)# no shutdown
OS10(config-if-vn-10000)# exit
OS10(config)# interface virtual-network 20000
OS10(config-if-vn-20000)# ip vrf forwarding tenant1
OS10(config-if-vn-20000)# ip address 10.2.0.232/16
OS10(config-if-vn-20000)# ip virtual-router address 10.2.0.100
OS10(config-if-vn-20000)# no shutdown
OS10(config-if-vn-20000)# exit

VTEP 3 Leaf Switch

1. Configure the underlay OSPF protocol

Do not configure the same IP address for the router ID and the source loopback interface in Step 2.

OS10(config)# router ospf 1
OS10(config-router-ospf-1)# router-id 172.18.0.1
OS10(config-router-ospf-1)# exit

2. Configure a Loopback interface 

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)# ip ospf 1 area 0.0.0.0
OS10(conf-if-lo-0)# exit

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

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

4. Configure VXLAN virtual networks with a static VTEP

OS10(config)# virtual-network 10000
OS10(config-vn-10000)# vxlan-vni 10000
OS10(config-vn-vxlan-vni)# remote-vtep 192.168.1.1
OS10(config-vn-vxlan-vni-remote-vtep)# exit
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)# remote-vtep 192.168.1.1
OS10(config-vn-vxlan-vni-remote-vtep)# exit
OS10(config-vn-vxlan-vni)# exit
OS10(config-vn-20000)# exit

5. Configure a reserved VLAN ID for untagged member interfaces

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

6. Configure access ports

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

7. Add access ports to the VXLAN 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
NOTE This step shows how to add access ports using port-scoped VLAN-to-VNI mapping. You can also add access ports using a switch-scoped VLAN-to-VNI mapping. However, you cannot use both methods at the same time; you must use either a port-scoped or switch-scoped VLAN-to-VNI mapping.

8. 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)# ip ospf 1 area 0.0.0.0
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)# ip ospf 1 area 0.0.0.0
OS10(conf-if-eth1/1/2)# exit

9. Configure VLT

Configure VLTi VLAN for the VXLAN 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 network failure

OS10(config)# interface vlan4000
OS10(config-if-vl-4000)# no shutdown
OS10(config-if-vl-4000)# ip address 172.16.250.9/30
OS10(config-if-vl-4000)# ip ospf 1 area 0.0.0.0
OS10(config-if-vl-4000)# exit

Configure a 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

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 a 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:dd:cc: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

10. Configure overlay IP routing

Create a tenant VRF

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

Configure an anycast L3 gateway

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

Configure routing with an anycast gateway IP address for each virtual network

OS10(config)# interface virtual-network 10000
OS10(config-if-vn-10000)# ip vrf forwarding tenant1
OS10(config-if-vn-10000)# ip address 10.1.0.233/16
OS10(config-if-vn-10000)# ip virtual-router address 10.1.0.100
OS10(config-if-vn-10000)# no shutdown
OS10(config-if-vn-10000)# exit
OS10(config)# interface virtual-network 20000
OS10(config-if-vn-20000)# ip vrf forwarding tenant1
OS10(config-if-vn-20000)# ip address 10.2.0.233/16
OS10(config-if-vn-20000)# ip virtual-router address 10.2.0.100
OS10(config-if-vn-20000)# no shutdown
OS10(config-if-vn-20000)# exit

VTEP 4 Leaf Switch

1. Configure the underlay OSPF protocol

Do not configure the same IP address for the router ID and the source loopback interface in Step 2.

OS10(config)# router ospf 1
OS10(config-router-ospf-1)# router-id 172.19.0.1
OS10(config-router-ospf-1)# exit

2. Configure a Loopback interface 

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)# ip ospf 1 area 0.0.0.0
OS10(conf-if-lo-0)# exit

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

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

4. Configure VXLAN virtual networks with a static VTEP

OS10(config)# virtual-network 10000
OS10(config-vn-10000)# vxlan-vni 10000
OS10(config-vn-vxlan-vni)# remote-vtep 192.168.1.1
OS10(config-vn-vxlan-vni-remote-vtep)# exit
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)# remote-vtep 192.168.1.1
OS10(config-vn-vxlan-vni-remote-vtep)# exit
OS10(config-vn-vxlan-vni)# exit
OS10(config-vn-20000)# exit

5. Configure a reserved VLAN ID for untagged member interfaces

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

6. Configure access ports

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

7. Add access ports to the VXLAN virtual network

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

8. 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)# ip ospf 1 area 0.0.0.0
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 172.19.2.0/31
OS10(conf-if-eth1/1/2)# ip ospf 1 area 0.0.0.0
OS10(conf-if-eth1/1/2)# exit

9. Configure VLT

Configure VLTi VLAN for the VXLAN virtual network

OS10(config)# virtual-network 10000
OS10(config-vn-10000)# vlti-vlan 200
OS10(config-vn-10000)# exit
OS10(config)# virtual-network 20000
OS10(config-vn-20000)# vlti-vlan 100
OS10(config-vn-20000)# exit

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

OS10(config)# interface vlan4000
OS10(config-if-vl-4000)# no shutdown
OS10(config-if-vl-4000)# ip address 172.16.250.10/30
OS10(config-if-vl-4000)# ip ospf 1 area 0.0.0.0
OS10(config-if-vl-4000)# exit

Configure a 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

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 a 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:dd:cc: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

10. Configure overlay IP routing

Create a tenant VRF

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

Configure an anycast L3 gateway for all VTEPs in all virtual networks

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

Configure routing with an anycast gateway IP address for each virtual network

OS10(config)# interface virtual-network 10000
OS10(config-if-vn-10000)# ip vrf forwarding tenant1
OS10(config-if-vn-10000)# ip address 10.1.0.234/16
OS10(config-if-vn-10000)# ip virtual-router address 10.1.0.100
OS10(config-if-vn-10000)# no shutdown
OS10(config-if-vn-10000)# exit
OS10(config)# interface virtual-network 20000
OS10(config-if-vn-20000)# ip vrf forwarding tenant1
OS10(config-if-vn-20000)# ip address 10.2.0.234/16
OS10(config-if-vn-20000)# ip virtual-router address 10.2.0.100
OS10(config-if-vn-20000)# no shutdown
OS10(config-if-vn-20000)# exit

Spine Switch 1

1. Configure downstream ports on underlay links to 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)# ip ospf 1 area 0.0.0.0
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)# ip ospf 1 area 0.0.0.0
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)# ip ospf 1 area 0.0.0.0
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)# ip ospf 1 area 0.0.0.0
OS10(conf-if-eth1/1/4)# exit

2. Configure the underlay OSPF protocol

OS10(config)# router ospf 1
OS10(config-router-ospf-1)# router-id 172.200.0.1
OS10(config-router-ospf-1)# exit

Spine Switch 2

1. Configure downstream ports on underlay links to 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)# ip ospf 1 area 0.0.0.0
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)# ip ospf 1 area 0.0.0.0
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)# ip ospf 1 area 0.0.0.0
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)# ip ospf 1 area 0.0.0.0
OS10(conf-if-eth1/1/4)# exit

2. Configure the underlay OSPF protocol

OS10(config)# router ospf 1
OS10(config-router-ospf-1)# router-id 172.201.0.1
OS10(config-router-ospf-1)# exit

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