C-8
Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
OL-1957-04
AppendixC Using the ROM Monitor
Entering the ROM Monitor Mode
Following sample output shows a configuration that has been saved:
Router# upgrade rom-monitor file tftp://223.255.254.254/ajayhn/C3745_RM2.srec
Loading ajayhn/C3745_RM2.srec from 223.255.254.254 (via FastEthernet0/0):
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 641719/1283072 bytes]
This command will reload the router. Continue? [yes/no]: y
Erasing boot flash eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Programming boot flash pppp
Now Reloading
System Bootstrap, Version 12.2(4r)XT4, RELEASE SOFTWARE (fc1)
TAC Support: http://www.cisco.com/tac
Copyright (c) 2001 by cisco Systems, Inc.
Running new upgrade for first time
System Bootstrap, Version 12.2(8r)T1, RELEASE SOFTWARE (fc1)
TAC Support: http://www.cisco.com/tac
Copyright (c) 2002 by cisco Systems, Inc.
c3745 processor with 196608 Kbytes of main memory
Main memory is configured to 64 bit mode with parity disabled
Upgrade ROMMON initialized
rommon 1 >
Note The rommon-pref command in the ROMMON command mode provides the same information as the
upgrade rom-monitor preference command in the Cisco IOS Exec mod.
Procedures for Recovering Boot and System Images
If your router experiences difficulties and no longer contains a valid CiscoIOS software image in flash
memory, you can recover the CiscoIOS image using one of the following ROM monitor commands:
• xmodem—Use this if the computer attached to your console has a terminal emulator that has
xmodem capability.
• tftpdnld—Use this if you have a TFTP server directly connected to the Ethernet 0 port.
Note The command tftpdnld is present in the Cisco 2600 series routers only.
Using 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 parameter filename specifies the source file containing the CiscoIOS image.
Other options include the following:
• -c—Uses cyclic redundancy check (CRC-16)
• -y—Uses Ymodem transfer protocol
• -r—Copies the image to DRAM for launch
• -x—Does not launch image on completion of download
To Next Page
Loading...
Need help?
General
