Copying An Image From The Console Using The Xmodem Command; Description And Options Of The Xmodem Command; Console Requirements; Procedure For The Xmodem Command - Cisco 2612 Hardware Installation Manual

Appendix B Using the ROM Monitor

Copying an Image from the Console Using the xmodem Command

Description and Options of the xmodem Command

The xmodem command establishes a connection between a console and the router console port for
disaster recovery, if both the boot and system images are erased from flash memory.
xmodem [filename]—Establishes an Xmodem connection between the console and the router. The
optional argument filename specifies the source file containing the Cisco IOS image.
Other options include the following:
•
•
•
•

Console Requirements

The console computer (PC) must have the following files to use this procedure:
•
•

Procedure for the xmodem Command

To copy a Cisco IOS image from a console to flash memory, perform the following procedure.
File transfer from a console is slow and will take many minutes.
Note
Connect a console to the router's console port using the instructions in the
Step 1
Terminal or Modem" section on page
Power up the router. The power-on self-test diagnostics run and the boot ROM searches for a valid boot
Step 2
image and Cisco IOS image in flash memory. If the boot image and Cisco IOS image are not found, the
ROM monitor prompt is displayed:
rommon 1>
OL-2171-06
The tftpdnld command is not available on the Cisco 2691 router. The recommended method
Note
for installing a Cisco IOS image on a Cisco 2691 router is from a CompactFlash memory
card loaded in the external CompactFlash memory card slot. See the
Commands" procedure on page
c—Use cyclic redundancy check (CRC-16).
y—Use Ymodem transfer protocol.
r—Copy the image to dynamic random-access memory (DRAM) for launch.
x—Do not launch image on completion of download.
Terminal emulation application program supporting one of the following file transfer protocols:
Xmodem
–
Xmodem–CRC
–
Xmodem–1K
–
Ymodem
–
Cisco IOS image file
B-4.
3-20.
Cisco 2600 Series Routers Hardware Installation Guide
Recovering Cisco IOS Software Images
"Entering Boot
"Connecting to a Console
B-9