FortiGate Administration Guide - FirewallShop.com

Interface
System Network
• it has no defined IP address and is not configured for DHCP or PPPoE
• it has no DHCP server or relay configured on it
• it does not have any VLAN subinterfaces
• it is not referenced in any firewall policy, VIP, IP Pool or multicast policy
• it is not monitored by HA
When an interface is included in a redundant interface, it is not listed on the
System > Network > Interface page. It is no longer individually configurable and
is not available for inclusion in firewall policies, VIPs, IP pools or routing.
Figure 39: Settings for a redundant interface
To create a redundant interface
1 Go to System > Network > Interface.
2 Select Create New.
3 In the Name field, enter a name for the redundant interface.
The interface name must not be the same as any other interface, zone or VDOM.
4 From the Type list, select Redundant Interface
5 One at a time, in the Available Interfaces list, select each physical interface that
you want to include in the redundant interface and then select the right arrow
button to move it to the Selected Interfaces list. The interfaces you add will be
used in the order they appear in the Selected Interfaces list. For example if the
first interface in the list fails, the second interface is used.
6 If this interface operates in NAT/Route mode, you need to configure addressing
for it. For information about dynamic addressing, see:
• “Configuring DHCP on an interface” on page 88
• “Configuring an interface for PPPoE or PPPoA” on page 90
7 Configure other interface options as required.
8 Select OK.
Configuring DHCP on an interface
If you configure an interface to use DHCP, the FortiGate unit automatically
broadcasts a DHCP request. The interface is configured with the IP address and
optionally DNS server addresses and default gateway address that the DHCP
server provides.
Go to System > Network > Interface. Select Create New or select the Edit icon
of an existing interface. In the Addressing mode section, select DHCP.
FortiGate Version 3.0 MR5 Administration Guide
88 01-30005-0203-20070830