Connecting FortiLink ports

Connecting FortiLink ports

This section contains information about the FortiSwitch and FortiGate ports that you connect to establish a FortiLink connection.

In FortiSwitchOS 3.3.0 and later releases, you can use any of the switch ports for FortiLink. Some or all of the switch ports (depending on the model) support auto-discovery of the FortiLink ports.

You can chose to connect a single FortiLink port or multiple FortiLink ports as a logical interface (link-aggregation group, hardware switch, or software switch).

1. Enable the switch controller on the FortiGate unit

Before connecting the FortiSwitch and FortiGate units, ensure that the switch controller feature is enabled on the FortiGate unit with the FortiGate web-based manager or CLI to enable the switch controller. Depending on the FortiGate model and software release, this feature might be enabled by default.

Using the FortiGate GUI

  1. Go to System > Feature Visibility.
  2. Turn on the Switch Controller feature, which is in the Basic Features
  3. Select Apply.

The menu option WiFi & Switch Controller now appears.

Using the FortiGate CLI

Use the following commands to enable the switch controller:

config system global set switch-controller enable


2. Connect the FortiSwitch unit and FortiGate unit

FortiSwitchOS 3.3.0 and later provides flexibility for FortiLink:

  • Use any switch port for FortiLink l Provides auto-discovery of the FortiLink ports on the FortiSwitch
  • Choice of a single FortiLink port or multiple FortiLink ports in a link-aggregation group (LAG)

Auto-discovery of the FortiSwitch ports

In FortiSwitchOS 3.3.0 and later releases, D-series FortiSwitch models support FortiLink auto-discovery, on automatic detection of the port connected to the FortiGate unit.

You can use any of the switch ports for FortiLink. Before connecting the switch to the FortiGate unit, use the following FortiSwitch CLI commands to configure a port for FortiLink auto-discovery:

config switch interface edit <port>

set auto-discovery-fortilink enable


By default, each FortiSwitch model provides a set of ports that are enabled for FortiLink auto-discovery. If you connect the FortiLink using one of these ports, no switch configuration is required.

In FortiSwitchOS 3.4.0 and later releases, the last four ports are the default auto-discovery FortiLink ports. You can also run the show switch interface command on the FortiSwitch unit to see the ports that have autodiscovery enabled.

The following table lists the default auto-discovery ports for each switch model.

NOTE: Any port can be used for FortiLink if it is manually configured.

FortiSwitch Model Default Auto-FortiLink ports
FS-108D ports 9 and 10
FS-108D-POE ports 9 and 10
FSR-112D ports 9, 10, 11 and 12
FSR-112D-POE ports 5, 6, 7, 8, 9, 10, 11, and 12
FS-124D, FS-124D-POE ports 23, 24, 25, and 26
FS-224D-POE ports 21, 22, 23, and 24
FS-224D-FPOE ports 21, 22, 23, 24, 25, 26, 27, and 28
FS-248D, FS-248D-FPOE, FS-448D, FS448D-FPOE, FS-448D-POE ports 45, 46, 47, 48, 49, 50, 51, and 52
FS-248D-POE ports 47, 48, 49, and 50
FS-424D, FS-424D-POE, FS-424D-FPOE ports 23, 24, 25, and 26
FS-524D, FS-524D-FPOE ports 21, 22, 23, 24, 25, 26, 27, 28, 29, and 30
FS-548D, FS-548D-FPOE ports 45, 46, 47, 48, 49, 50, 51, 52, 53, and 54
FS-1024D, FS-1048D, FS-3032D all ports

Choosing the FortiGate ports

The FortiGate unit manages all of the switches through one active FortiLink. The FortiLink can consist of one port or multiple ports (for a LAG).

  1. Connect the FortiSwitch unit and FortiGate unit Connecting FortiLink ports

As a general rule, FortiLink is supported on all ports that are not listed as HA ports.


Having trouble configuring your Fortinet hardware or have some questions you need answered? Check Out The Fortinet Guru Youtube Channel! Want someone else to deal with it for you? Get some consulting from Fortinet GURU!

Don't Forget To visit the YouTube Channel for the latest Fortinet Training Videos and Question / Answer sessions!
- FortinetGuru YouTube Channel
- FortiSwitch Training Videos

Cybersecurity Videos and Training Available Via: Office of The CISO Security Training Videos