FortiSwitch are offline after FortiGate upgraded from v7.4.6 or v7.6.0 to v7.6.1 or later when LLDP configuration set to vdom/disable under FortiLink interface.Workaround: Add LLDP configuration lldp-reception, lldp-transmission to enable under FortiLink interface, or rebuild FortiLink interface. FortiSwitch units are offline after FortiGate is upgraded from 7.4.6 or 7.6.0 to 7.6.1 or later when LLDP configuration is set to vdom/disable under the FortiLink interface.Workaround: In LLDP configuration, enable lldp-reception and lldp-transmission under the FortiLink interface, or rebuild the FortiLink interface.