Viewing The Configured Trunk - Fortinet FortiSwitch-28C Administration Manual

3. Configure the trunk 2 interface and assign member ports as a LAG group:

Viewing the Configured Trunk

In order to see the details of a configured trunk, use the following command:
diagnose switch trunk list
LACP Mode
config switch trunk
edit trunk2
set members "port4" "port5"
set description test
set mode lacp-passive
set port-selection criteria src-dst-ip
end
end
Page 16 Managing a FortiSwitch unit with a FortiGate