System network
Adding VLAN subinterfaces
FortiGate-100A Administration Guide
01-28007-0068-20041203
65
Figure 15
shows a simplified NAT/Route mode VLAN configuration. In this example,
FortiGate internal interface connects to a VLAN switch using an 802.1Q trunk and is
configured with two VLAN subinterfaces (VLAN 100 and VLAN 200). The external
interface connects to the Internet. The external interface is not configured with VLAN
subinterfaces.
When the VLAN switch receives packets from VLAN 100 and VLAN 200, it applies
VLAN tags and forwards the packets to local ports and across the trunk to the
FortiGate unit. The FortiGate unit is configured with policies that allow traffic to flow
between the VLANs and from the VLANs to the external network.
Figure 15: 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.
Note:
If you are unable to change your existing configurations to prevent IP overlap, enter the
CLI command
config system global
and
set ip-overlap enable
to allow IP address
overlap. If you enter this command, multiple VLAN interfaces can have an IP address that is
part of a subnet used by another interface. This command is recommended for advanced users
only.
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.
Содержание FortiGate 100A
Страница 12: ...Contents 12 01 28007 0068 20041203 Fortinet Inc ...
Страница 24: ...24 01 28007 0068 20041203 Fortinet Inc FortiLog documentation Introduction ...
Страница 46: ...46 01 28007 0068 20041203 Fortinet Inc Installing and using a backup firmware image System status ...
Страница 72: ...72 01 28007 0068 20041203 Fortinet Inc Transparent mode VLAN settings System network ...
Страница 80: ...80 01 28007 0068 20041203 Fortinet Inc DHCP IP MAC binding settings System DHCP ...
Страница 114: ...114 01 28007 0068 20041203 Fortinet Inc Access profile options System administration ...
Страница 232: ...232 01 28007 0068 20041203 Fortinet Inc Profile CLI configuration Firewall ...
Страница 244: ...244 01 28007 0068 20041203 Fortinet Inc peergrp Users and authentication ...
Страница 276: ...276 01 28007 0068 20041203 Fortinet Inc ipsec vip VPN ...
Страница 338: ...338 01 28007 0068 20041203 Fortinet Inc Configuring the banned word list Spam filter ...
Страница 356: ...356 01 28007 0068 20041203 Fortinet Inc syslogd setting Log Report ...
Страница 374: ...374 01 28007 0068 20041203 Fortinet Inc Index ...