The steps below describe how to recover a password on the Cisco 600 series of routers.
Step 1: Enter RMON mode.
To do this, follow the steps below:
Connect your PC to the console port of the router. Set your Terminal Access Program (such as HyperTerminal in Windows) to the following settings: Baud rate: 38400 bps recommended (standard 9600 bps possible) Data bits: 8 Parity: None Stop bits: 1 Flow control: None Power cycle the router (turn the router off, then on using the router's power switch) As soon as you see the Hello! prompt, type Ctrl-C. You are now in RMON mode.
Step 2: If you need to save the configuration file, execute the following command:
db fef80030 100
This command prints the configuration to the screen. The last number indicates the number of bytes to display. Use a value of 100 bytes or more for the number of bytes to display.
Note: You must use the enable password command for the password to display encrypted during password recovery.
Step 3: Look for your encrypted password.
The text of the password will be altered by two letters. For example, using the key a = c, b = d, c = e, and so on, the password "cisco" would be "agqam".
Step 4: (This step is optional.) Erase the current configuration.
An example is shown below:
=>es 6
Erasing sector 00000006...Sector erased
=>rb
Hello!CBOS v2.0.1.01
Note: This step reboots a Cisco 600 series router with no configuration. You will need to redo the configuration and then use the write command to save the changes to NVRAM.
Step: 5: Reboot the router.
An example is shown below:
rb