FortiGate Administration Guide - FirewallShop.com

Interface
System Network
Figure 37: Settings for an ADSL interface
Address mode
Gateway
Connect to Server
IPOA
Creating an 802.3ad aggregate interface
Select the addressing mode that your ISP specifies.
IP over ATM. Enter the IP address and netmask that your
ISP provides.
EOA Ethernet over ATM, also known as Bridged mode. Enter
the IP address and netmask that your ISP provides.
DHCP See “Configuring DHCP on an interface” on page 88.
PPPoE
PPPoA
Virtual Circuit Identification
MUX Type
See “Configuring an interface for PPPoE or PPPoA”
on page 90.
See “Configuring an interface for PPPoE or PPPoA”
on page 90.
Enter the default gateway.
Enable Connect to Server so that the interface
automatically attempts to connect. Disable this option if
you are configuring the interface offline.
Enter the VPI and VCI values your ISP provides.
Select the MUX type: LLC Encap or VC Encap.
Your ISP must provide this information.
You can aggregate (combine) two or more physical interfaces to increase
bandwidth and provide some link redundancy. This has the benefit of higher
bandwidth but has more potential points of failure than redundant interfaces. The
interfaces must connect to the same next-hop routing destination.
FortiGate firmware on models 800 and higher implements IEEE standard 802.3ad
for link aggregation.
An interface is available for aggregation only if
• it is a physical interface, not a VLAN interface
• it is not already part of an aggregated or redundant interface
• it is in the same VDOM as the aggregated interface
• 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 an HA heartbeat interface
it is not one of the FortiGate 5000 series backplane interfaces
Note: While you can add accelerated interfaces (FA2 ports) to an aggregate link, you will
lose the acceleration. For example, aggregating two accelerated ports would result in
slower throughput than the two ports separately.
FortiGate Version 3.0 MR5 Administration Guide
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