Cisco Systems OL-11497-03 manual Recovering a Lost Password

Chapter 4 Troubleshooting the Installation

Performing Other Configuration Tasks

Bit 13—Bit 13 of the software configuration register determines the system 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 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 will not work for password recovery, and you will have to reconfigure the system before attempting a reboot. To reconfigure the system, use the displayed configuration, which is shown using the show startup-configcommand in privileged EXEC mode, shown in Step 11.

To recover a lost password, follow these steps:

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 whatever settings the console port is set to).

Step 3 Enter the show version command at the privileged EXEC mode prompt to display the existing software configuration register value.

Router# show version

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The current configuration setting appears in the last line of the show version command output. Write this value on paper for use in Step 13.

Step 4 If the Break function is disabled, turn off power to the power supplies, wait 5 seconds, then restore power.

If the Break function is enabled, press the Break key or send a break by holding down the Control key and pressing the right square bracket key (Ctrl-]).

	Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
OL-11497-03		4-11