FortiGate 6000F HA group ID range increased to 0 to 255

The range of the FortiGate 6000F HA group ID has been increased to 0 to 255:

config system ha

set group-id 0-255

end

The HA group ID is used to calculate the MAC addresses assigned by the FGCP to the FortiGates in an FGCP cluster. Because of this change to the group ID range, after upgrading a FortiGate 6000F FGCP cluster to FortiOS 6.4.10, the MAC addresses assigned to the cluster interfaces by the FGCP will not be the same as the MAC addresses that were assigned before the firmware upgrade.

If you have upstream devices that perform MAC address checking and enforcement, traffic may be interrupted after the firmware upgrade because of the new MAC addresses.