4-11
Cisco 12404 Internet Router Installation and Configuration Guide
OL-11636-01
Chapter 4 Troubleshooting the Installation
Recovering a Lost Password
Bit 13
Bit 13 of the software configuration register determines the system’s response to
a bootload failure. Setting bit 13 causes the system to load Cisco IOS software
from Flash memory after five unsuccessful attempts to load a boot file from the
network TFTP server. Clearing bit 13 causes the system to continue attempting to
load a boot file from the network TFTP server indefinitely. Bit 13 in the software
configuration register is set to 0 as the default at the factory.
Recovering a Lost Password
This section provides information on how to recover a lost password.
Note
If the enable password is encrypted, the following procedure does not work for
password recovery, and you must reconfigure the system before attempting a
reboot. To reconfigure the system, use the displayed configuration, which is
shown using the
show startup-config
command in privileged EXEC mode,
shown in Step 11.
Step 1
Attach an ASCII terminal to the RP console port.
Step 2
Configure the terminal to operate at 9600 bps, 8 data bits, no parity, 2 stop bits (or
to whatever settings the console port is set).
Step 3
Enter the
show version
command at the privileged EXEC mode prompt to display
the existing software configuration register value.
Table 4-5
System Console Terminal Data Transmission Rate Settings
Bit 12
Bit 11
Data Transmission Rate (Bps)
0
0
9600
0
1
4800
1
0
1200
1
1
2400
todd.book Page 11 Tuesday, November 27, 2007 6:02 PM