On the Cisco 2612, this variable sets the Token Ring or Ethernet port. The variables to set for Token Ring are shown here: TR_1E1R_PORT This is done by defining the variable TFTP_CHECKSUM=0 from the ROM monitor set command, and then proceeding with the tftpdnld procedure. Note: As a workaround to this problem, set the ROM monitor variable TFTP_CHECKSUM to 0. Note: As detailed in Cisco bug ID CSCdk81077 ( registered customers only), for Cisco 26 Series Routers running the ROM monitor command tftpdnld, the command might report a bad checksum comparison when it loads Cisco IOS software images of Cisco IOS Software Release 12.0(2.2)T or later. u: upgrade the rommon, system will reboot once upgrade is complete r: do not write flash, load to DRAM only and launch image TFTP_CHECKSUM: Perform checksum test on image, 0=no, 1=yes (default=1) TFTP_TIMEOUT: Overall timeout of operation in seconds (default=7200) TFTP_RETRY_COUNT: Retry count for ARP and TFTP (default=7) TFTP_SERVER: The IP address of the server to fetch from IP_SUBNET_MASK: The subnet mask for this unitĭEFAULT_GATEWAY: The default gateway for this unit The following variables are REQUIRED to be set for tftpdnld: 'ctrl-c' or 'break' stops the transfer before flash erase begins. (Syntax: 'VARIABLE_NAME=value' and use 'set' to show current variables.) Monitor variables are used to set up parameters for the transfer. Use this command for disaster recovery only to recover an image via TFTP. The variables to set for tftpdnld are shown here: usage: tftpdnld You can view the ROMmon environment variables by using the set command, as shown here: rommon 3 > set

Operationįirst, you must set ROMmon environment variables prior to the TFTP download. Refer to Cisco Technical Tips Conventions for more information on document conventions. This document is not restricted to specific software and hardware versions. There are no specific requirements for this document. The transfer does not support route bridging on Token Ring ports. You cannot use ROMmon TFTP to get files from the router.

You can only download files to the router. However, for the Cisco 2612, you can choose the Token Ring or Fast Ethernet port. The ROMmon TFTP transfer works on the first LAN port only. This document explains how to download a software image to a Cisco 2600/2800/3800 Series Router using Trivial File Transfer Protocol (TFTP) over the first LAN port using the ROMmon tftpdnld command.

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