Cisco 7246VXR - uBR Router Software Configuration Manual page 169

Chapter 2 Configuring the Cable Modem Termination System for the First Time
It is possible to recover the enable or console login password. The enable secret password is encrypted,
Note
however, and must be replaced with a new enable secret password.
Overview of the Password Recovery Process
Following is an overview of the general steps in the password recovery procedure:
If you can log in to the router, enter the show version command to determine the existing configuration
Step 1
register value.
Press the Break key to get to the bootstrap program prompt (ROM monitor). You might need to reload
Step 2
the system image by power cycling the router.
Step 3 Change the configuration register so that the following functions are enabled:
•
•
•
Note
Power cycle the router by turning power off and then back on.
Step 4
Log in to the router and enter the privileged EXEC mode.
Step 5
Enter the show startup-config command to display the passwords.
Step 6
Recover or replace the displayed passwords.
Step 7
Step 8 Change the configuration register back to its original setting.
To recover a lost password if
Note
Replacing or Recovering Passwords
Complete the following steps to recover or replace a lost enable, enable secret, or console login
password:
Step 1 Attach an ASCII terminal to the console port on your Cisco uBR7200 series router.
Step 2 Configure the terminal to operate at 9600 baud, 8 data bits, no parity, and 2 stop bits.
If you can log in to the router as a nonprivileged user, enter the show version command to display the
Step 3
existing configuration register value. Note the value for later use. If you cannot log in to the router at all,
continue with the next step.
Press the Break key or send a Break from the console terminal.
Step 4
OL-2239-03
Break
Ignore startup configuration
Boot from Flash memory
The key to recovering a lost password is to set the configuration register bit 6 (0x0040) so that
the startup configuration (usually in NVRAM) is ignored. This allows you to log in without
using a password and to display the startup configuration passwords. Cisco recommends setting
the configuration register to 0x142.
Break
Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
Configuration Fundamentals for the Cisco uBR7200 Series
is disabled on the router, you must have physical access to the router.
2-7