Configuring IP over VLAN

To configure IP over VLAN over an Ethernet interface:

1. Specify a Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet port.

   host1(config)#interface fastEthernet 4/0

2. Specify VLAN as the encapsulation method.

   host1(config-if)#encapsulation vlan

   The VLAN major interface is added.

3. Create a VLAN subinterface by adding a subinterface number to the interface identification command.

   host1(config-if)#interface fastEthernet 4/0.3

4. Do one of the following:
   1. Assign a VLAN ID for the subinterface.

      host1(config-if)#vlan id 201

   2. Assign a VLAN ID and the optional unique MAC address for the subinterface.

      host1(config-if)#vlan id 201 mac-address 0090.1a01.1234

5. Assign an IP address and mask.

   host1(config-if)#ip address 192.6.129.5 255.255.255.0

6. (Optional) Configure additional VLAN subinterfaces by completing Steps 3 through 5.

Figure 14 illustrates the IP/VLAN/Fast Ethernet stacking, showing two separate VLAN subinterfaces. Configure one VLAN subinterface entirely; then configure the next VLAN subinterface.

Figure 14: Example of IP/VLAN/Fast Ethernet Stacking Configuration Procedure

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