Enabling Layer 3 routing for VLANs

Do the following to enable Layer 3 routing on a VLAN.

Enter global configuration mode.
```
device# configure terminal
```
Create a VLAN.
```
device(config)# vlan 200
```
Create a virtual Ethernet (VE), assign an IP address and mask, and enable the interface.
```
device(config)# interface ve 200
device(config-Ve-200)# ip address 10.x.x.x/24
device(config-Ve-200)# no shutdown
```
A VE interface can exist without a VLAN configuration, but it must be provisioned in the VLAN in order to be used.
Enter the router-interface command and specify the VLAN.
```
device(config-vlan-200)# router-interface ve 200
```