Configure the VLAN switch
On the Cisco Catalyst 2950 Catalyst VLAN switch, you need to define VLANs 100 and 200 in the VLAN database, and then add a configuration file to define the VLAN subinterfaces and the 802.1Q trunk interface.
One method to configure a Cisco switch is to connect over a serial connection to the console port on the switch, and enter the commands at the CLI. Another method is to designate one interface on the switch as the management interface and use a web browser to connect to the switch’s graphical interface. For details on connecting and configuring your Cisco switch, refer to the installation and configuration manuals for the switch.
The switch used in this example is a Cisco Catalyst 2950 switch. The commands used are IOS commands. Refer to the switch manual for help with these commands.
To configure the VLAN subinterfaces and the trunk interfaces
Add this file to the Cisco switch:
!
interface FastEthernet0/3
switchport access vlan 100
!
interface FastEthernet0/9
switchport access vlan 200
!
interface FastEthernet0/24
switchport trunk encapsulation dot1q
switchport mode trunk
!
The switch has the configuration:
Port 0/3 | VLAN ID 100 |
Port 0/9 | VLAN ID 200 |
Port 0/24 | 802.1Q trunk |
| To complete the setup, configure devices on VLAN_100 and VLAN_200 with default gateways. The default gateway for VLAN_100 is the FortiGate VLAN_100 subinterface. The default gateway for VLAN_200 is the FortiGate VLAN_200 subinterface. |
See Also