Creating An 802.3Ad Aggregate Interface - Fortinet Gate 60D Administration Manual

System Network

Creating an 802.3ad aggregate interface

FortiGate Version 4.0 Administration Guide
01-400-89802-20090424
http://docs.fortinet.com/ • Feedback
MTU To change the MTU, select Override default MTU value (1 500) and enter the
MTU size based on the addressing mode of the interface
• 68 to 1 500 bytes for static mode
• 576 to 1 500 bytes for DHCP mode
• 576 to 1 492 bytes for PPPoE mode
• up to 16 110 bytes for jumbo frames (on FortiGate models that support jumbo
frames)
• NP2-accelerated interfaces support a jumbo frame limit of 16 000 bytes
• FA2-accelerated interfaces do not support jumbo frames
This field is available only on physical interfaces. VLANs inherit the parent
interface MTU size by default.
For more information on MTU and jumbo frames, see
on page 135.
Secondary IP Add additional IP addresses to this interface. Select the blue arrow to expand or
hide the section. See
Address
Description Enter a description up to 63 characters.
Administrative Select either Up (green arrow) or Down (red arrow) as the status of this interface.
Status Up indicates the interface is active and can accept network traffic.
Down indicates the interface is not active and cannot accept traffic.
Note: In Transparent mode, if you change the MTU of an interface, you must change the
MTU of all interfaces to match the new MTU.
To configure a specific type of interface, refer to the appropriate section. To configure:
• an aggregate interface, see
• a redundant interface, see
• a VLAN subinterface, see
• a wireless interface, see
You can aggregate (combine) two or more physical interfaces to increase bandwidth and
provide some link redundancy. An aggregate interface provides more bandwidth but also
creates more points of failure than redundant interfaces. The interfaces must connect to
the same next-hop routing destination.
Support of the IEEE standard 802.3ad for link aggregation is part of FortiGate firmware on
models 300A, 310B, 400A, 500A, 620B, and models 800 and higher.
An interface is available to be an aggregate interface if:
• it is a physical interface, not a VLAN interface
• it is not already part of an aggregate or redundant interface
• it is in the same VDOM as the aggregated interface
• it does not have a IP address and is not configured for DHCP or PPPoE
• it does not have a 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
"Secondary IP Addresses" on page
"Creating an 802.3ad aggregate interface" on page
"Creating a redundant interface" on page
"FortiGate units and VLANs" on page
"Adding a wireless interface" on page
Interfaces
"Interface MTU packet size"
136.
127.
128.
151.
163.
127