System Network
VLANs in NAT/Route mode
FortiGate-5000 series Administration Guide
01-28008-0013-20050204
73
Figure 21: FortiGate unit in Nat/Route mode
Adding VLAN subinterfaces
The VLAN ID of each VLAN subinterface must match the VLAN ID added by the IEEE
802.1Q-compliant router. The VLAN ID can be any number between 1 and 4096.
Each VLAN subinterface must also be configured with its own IP address and
netmask.
You add VLAN subinterfaces to the physical interface that receives VLAN-tagged
packets.
To add a VLAN subinterface in NAT/Route mode
1
Go to
System > Network > Interface
.
2
Select Create New to add a VLAN subinterface.
3
Enter a Name to identify the VLAN subinterface.
4
Select the physical interface that receives the VLAN packets intended for this VLAN
subinterface.
5
Enter the VLAN ID that matches the VLAN ID of the packets to be received by this
VLAN subinterface.
6
Select the virtual domain to which to add this VLAN subinterface.
See
“System Virtual Domain” on page 141
for information about virtual domains.
7
Select the name of a zone if you want this VLAN subinterface to belong to a zone.
You can only select a zone that has been added to the virtual domain selected in the
previous step. See
“Zone” on page 66
for information about zones.
8
Configure the VLAN subinterface settings as you would for any FortiGate interface.
See
“Interface settings” on page 56
.
9
Select OK to save your changes.
The FortiGate unit adds the new VLAN subinterface to the interface that you selected
in step
4
.
802.1Q Trunk
VLAN switch
Internet
FortiGate
POWER
Esc
Enter
External
172.16.21.2
Internal
192.168.110.126
Fa0/3
Fa0/9
Fa0/24
VLAN 100
VLAN 200
VLAN 100 network
10.1.1.0
10.1.1.2
VLAN 200 network
10.1.2.0
10.1.2.2
Note:
A VLAN must not have the same name as a virtual domain or zone.
Summary of Contents for FortiGate FortiGate-5020
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