Final answer:
The command to disable LLDP globally is 'no lldp run'. This command stops the use of the Link Layer Discovery Protocol (LLDP) on all interfaces of a network device.
Step-by-step explanation:
The command to disable LLDP globally is no lldp run. This command is used in network devices to stop the use of the Link Layer Discovery Protocol (LLDP) on all interfaces. LLDP is a protocol used for network discovery and neighbor identification. By running the no lldp run command, LLDP will be disabled on the device, preventing it from sending or receiving LLDP packets.