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

Example of IP/VLAN/Fast Ethernet Stacking
Configuration Procedure

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