Cisco Systems OL-6426-02 manual Change the Configuration Register, 14-10, Router# show version

Chapter 14 Troubleshooting

Recovering a Lost Password

BETA DRAFT - CISCO CONFIDENTIAL

Change the Configuration Register

To change a configuration register, follow these steps:

Step 1 Connect an ASCII terminal or a PC running a terminal emulation program to the CONSOLE port on the rear panel of the router.

Step 2 Configure the terminal to operate at 9600 baud, 8 data bits, no parity, and 1 stop bit.

Step 3 At the privileged EXEC prompt (router_name #), enter the show version command to display the existing configuration register value (shown in bold at the bottom of this output example):

Router# show version

Cisco IOS Software, C180X Software (C180X-ADVENTERPRISEK9-M), Version 12.4(1.8)PI2c ENGINEERING WEEKLY BUILD, synced to haw_t BASE_LABEL_OF_V124_2_T_THROTTLE Copyright (c) 1986-2005 by Cisco Systems, Inc.

Compiled Fri 27-May-05 16:14 by ccai

ROM: System Bootstrap, Version 12.3(8r)YH4, RELEASE SOFTWARE (fc1)

ng-esw1-uut1 uptime is 1 hour, 21 minutes System returned to ROM by power-on

System image file is "flash:bootimage.ng-esw1-uut1"

This product contains cryptographic features and is subject to United States and local country laws governing import, export, transfer and use. Delivery of Cisco cryptographic products does not imply third-party authority to import, export, distribute or use encryption. Importers, exporters, distributors and users are responsible for compliance with U.S. and local country laws. By using this product you agree to comply with applicable laws and regulations. If you are unable to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to export@cisco.com.

Cisco 1801 (MPC8500) processor (revision 0x200) with 118784K/12288K bytes of memory. Processor board ID FHK091412QA, with hardware revision 0000

9 FastEthernet interfaces

1 ISDN Basic Rate interface

1 ATM interface

31360K bytes of ATA CompactFlash (Read/Write)

Configuration register is 0x2102

Step 4 Record the setting of the configuration register.

Step 5 Enter the config-registervalue command to set the new configuration register value. For example, to enable the break setting (indicated by the value of bit 8 in the configuration register), enter the config-register 0x01 command from privileged EXEC mode.

•Break enabled—Bit 8 is set to 0.

•Break disabled (default setting)—Bit 8 is set to 1.

	Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide
14-10	OL-6426-02