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Entering the ROM Monitor Mode
System Bootstrap, Version 12.3(4)T, RELEASE SOFTWARE (fc1)
TAC Support: http:_//www.cisco.com/tac
Copyright (c) 2002 by cisco Systems, Inc.
cvg224 processor with 196608 Kbytes of main memory
Main memory is configured to 64 bit mode with parity disabled
Upgrade ROMMON initialized
rommon 1 >
Following output example a configuration that has been saved:
Router# upgrade rom-monitor file tftp://223.225.254.254/ajayhn/cvg224_BM2.SREC
Loading ajayhn/Cvg224_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 12.3(4)T, RELEASE SOFTWARE (fc1)
TAC Support:
Copyright (c) 2001 by cisco Systems, Inc.
Running new upgrade for first time
System Bootstrap, Version 12.3(4)T, RELEASE SOFTWARE (fc1)
TAC Support:
Copyright (c) 2002 by cisco Systems, Inc.
cvg224 processor with 196608 Kbytes of main memory
Main memory is configured to 64 bit mode with parity disabled
Upgrade ROMMON initialized
rommon 1 >
The rommon-pref in ROMMON mode provides the same information as upgrade rom-monitor
Note
preference command in the Cisco IOS EXEC mode.
Recovering Boot and System Images
If your router experiences difficulties and no longer contains a valid Cisco IOS software image in flash
memory, you can recover the Cisco IOS image using one of the following ROM monitor commands:
•
•
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 Cisco IOS image.
Other options include the following:
•
•
Cisco VG224 Voice Gateway Software Configuration Guide
C-8
http://www.cisco.com/tac
http://www.cisco.com/tac
xmodem—Use this command if the computer attached to your console has a terminal emulator that
has xmodem capability.
tftpdnld—Use this command if you have a TFTP server directly connected to a Fast Ethernet port.
-c—Uses cyclic redundancy check (CRC-16)
-y—Uses Ymodem transfer protocol
Appendix C
Using the ROM Monitor
OL-5005-01
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