| IP address of the router. | IP_ADDRESS= ip_address |
| Subnet mask of the router. | IP_SUBNET_MASK= ip_address |
| IP address of the default gateway of the router. | DEFAULT_GATEWAY= ip_address |
| IP address of the TFTP server from which the software will be downloaded. | TFTP_SERVER= ip_address |
| Name of the file that will be downloaded to the router. | TFTP_FILE= filename |
ex) set IP_ADDRESS=192.168.1.50
set IP_SUBNET_MASK=255.255.255.0
copy tftp://192.168.0.121/cat9k_lite_iosxe.16.09.03.SPA.bin flash:
source : https://www.cisco.com/en/US/docs/routers/access/800/850/software/configuration/guide/rommon.html