Technical Tip: Members of FortiLink interface on FortiGate 90G with different hardware revisions

On FortiGate 90G with hardware revision 1, the members of the FortiLink interface are interface 'a', and interface 'b':

FGT-1 # get hardware status
Model name: FortiGate-90G  <-------
ASIC version: SOC5
CPU: ARMv8
Number of CPUs: 8
RAM: 7547 MB
EMMC: 9982 MB(MLC) /dev/mmcblk0
Hard disk: not available
USB Flash: not available
Network Card chipset: FortiASIC NP7LITE Adapter (rev.)
Hardware Board ID: 002
Hardware Revision:Rev1  <------------

FGT-1 # show system interface fortilink
config system interface
    edit "fortilink"
        set vdom "root"
        set fortilink enable
        set ip 10.255.1.1 255.255.255.0
        set allowaccess ping fabric
        set type aggregate
        set member "a" "b"    <------------
        set lldp-reception enable
        set lldp-transmission enable
        set snmp-index 16
    next
end

On FortiGate 90G with hardware revision 2, the members of the FortiLink interface are interface 'x1', and interface 'x2':

FGT-2 # get hardware status
Model name: FortiGate-90G  <-------
ASIC version: SOC5
CPU: ARMv8
Number of CPUs: 8
RAM: 7547 MB
EMMC: 9982 MB(MLC) /dev/mmcblk0
Hard disk: not available
USB Flash: not available
Network Card chipset: FortiASIC NP7LITE Adapter (rev.)
Hardware Board ID: 003
Hardware Revision:Rev2   <------------

FGT-2 # show system interface fortilink

config system interface
    edit "fortilink"
        set vdom "root"
        set fortilink enable
        set ip 10.255.1.1 255.255.255.0
        set allowaccess ping fabric
        set type aggregate
        set member "x1" "x2"   <------------
        set lldp-reception enable
        set lldp-transmission enable
        set snmp-index 16
    next
end

Note: It is not possible to set up HA between Gen1 and Gen2 due to interface differences. 

Related article:

Technical Tip: Fortinet Products Hardware Revision