Cisco ESW-520-48P-K9 Software Guide - Page 147
Using the TFTP Download Command, Configuration Register
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Appendix C ROM Monitor Configuration Register Number of times the router attempts ARP and TFTP download. The default is 7. TFTP_RETRY_COUNT= retry_times Length of time, in seconds, before the download process times out. The TFTP_TIMEOUT= time default is 2,400 seconds (40 minutes). Whether or not the router performs a checksum test on the downloaded TFTP_CHECKSUM=settin image: g 1-Checksum test is performed. 0-No checksum test is performed. Using the TFTP Download Command Perform these steps in ROM monitor mode to download a file through TFTP: Step 1 Step 2 Step 3 Use the appropriate commands to enter all the required variables and any optional variables described in preceding sections. Enter the tftpdnld command as follows: rommon 1 > tftpdnld You will see output similar to the following: IP_ADDRESS: 10.3.6.7 IP_SUBNET_MASK: 255.255.0.0 DEFAULT_GATEWAY: 10.3.0.1 TFTP_SERVER: 192.168.254.254 TFTP_FILE: sr520-adipservicessk9-mz Do you wish to continue? y/n: [n]: If you are sure that you want to continue, enter y in response to the question in the output: Do you wish to continue? y/n: [n]:y The router begins to download the new file. If you mistakenly entered yes, you can enter Ctrl-C or Break to stop the transfer before the flash memory is erased. Configuration Register The virtual configuration register is in nonvolatile RAM (NVRAM) and has the same functionality as other Cisco routers. You can view or modify the virtual configuration register from either the ROM monitor or the operating system software. Within the ROM monitor, you can change the configuration register by entering the register value in hexadecimal format, or by allowing the ROM monitor to prompt you for the setting of each bit. OL-14210-01 Cisco Secure Router 520 Series Software Configuration Guide C-5