Device Image Management
	
  Using maintenance mode, you can download
		firmware on one or more devices in the IP fabric with minimal disruption to data path
		traffic. Both Clos and small data center (non-Clos) fabrics are supported. The maintenance
		mode feature is supported only on SLX devices running SLXOS 20.1.1 and later.
		XCO supports the following firmware
			download features.
		
			- Firmware download with maintenance mode
				supporting the following:
					- Asynchronously launched
						operations
- Sanity and pre-install script
						verification
- Set convergence timeout,
						enable, and disable
- Persisting the running
						configuration so that running configuration and maintenance mode
						configuration are preserved after reboot 
- Firmware download with the no
							commitoption to enable restoration of firmware to a previous
						version
 
- Firmware host registration, with support for register, update, delete, and list
				operations
- Firmware download preparation, with support for add, remove, and list operations 
- Firmware download with the
					showoption, to display a table of devices in the fabric and
				their corresponding status
Limitations
			
			
				- The device firmware must be SLX-OS 20.1.1 or
					later to support firmware download with maintenance mode for a hitless firmware
					upgrade.
- This feature assumes an existing host that
					contains SLX-OS firmware images ready to be downloaded.
- You can use this feature on a device where
						XCO TPVM is deployed, as long as you follow the instructions in 
    ExtremeCloud Orchestrator Deployment Guide,
     3.6.0
   . 
- If you downgrade software from version 20.1.2a to 20.1.1, you must manually
					remove certificates.
Supported devices
			
			The SLX-OS firmware download with maintenance mode is supported on the following SLX devices
				running SLX-OS 20.1.1 and later.
			
				- SLX 9540
- SLX 9640
- SLX 9150-48Y
- SLX 9150-48XT
- SLX 9250
- SLX 9740