Fortinet FortiSwitch-28C Administration Manual page 15

Figure 5: Trunk/LAG ports
1. Configure the trunk 1 interface and assign member ports as a LAG group:
2. Configure the switch ports to have native vlan assignments and allow those vlans on the port
that will be the uplink port:
LACP Mode
config switch trunk
edit trunk1
set members "port1" "port2" "port3"
set description test
set mode lacp-passive
set port-selection criteria src-dst-ip
end
end
config switch interface
edit port 1
set native-vlan 1
next
edit port 2
set native-vlan 2
next
edit port 3
set native-vlan 3
next
edit port 4
set native-vlan 4
set allowed vlans 1 2 3
next
edit port 5
set native-vlan 5
set allowed-vlans 1 2 3
end
end
Page 15 Managing a FortiSwitch unit with a FortiGate