4.3 Configuring VLANs
4.3.1 Configuring static VLANs
Static VLANs are ports on a switch that are manually assigned to a VLAN by using a VLAN management application or by working directly within the switch. These ports maintain their assigned VLAN configuration until you change them. Although static VLANs require manual entry changes, they are secure, easy to configure, and straightforward to monitor. This type of VLAN works well in networks where moves are controlled and managed; where there is robust VLAN management software to configure the ports; and where it is not desirable to assume the additional overhead required when maintaining end-station MAC addresses and custom filtering tables.

The creation of a VLAN on a switch is a very straightforward and simple task. If using a Cisco IOS command-based switch, simply go to the interface you wish to configure and issue the command

Switch(config-if)# switchport mode access
Switch(config-if)# switchport access vlan number

In Figure , interface FastEthernet 0/3 is being assigned to vlan 2. As you can see in Figure , this configuration has been verified by using the show running-config command.

If using a set-based switch, simply enter the set vlan command to create a VLAN, as shown below and in Figure .

switch> (enable) set vlan vlan_num mod_num/port_list

Lab Activity
  In this lab activity, you will learn how to configure your Distribution Layer Catalyst 4000 Ethernet Switch to support three VLANs - Marketing, Accounting, and Engineering.
Lab Activity
  In this lab activity, you will learn how to configure your Access Layer Catalyst 2900 Ethernet Switch to  support three VLANs - Marketing, Accounting, and Engineering.