Introduction

This document describes how to recover the enable password and the enable secret passwords. These passwords protect access to privileged EXEC and configuration modes. The enable password password can be recovered, but the enable secret password is encrypted and must be replaced with a new password. Use the procedure described in this document in order to replace the enable secret password.

The information in this document is based on these hardware versions:

* Cisco 3600 Series Router
* Cisco 3800 Series Router

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.

Step-by-Step Procedure

Follow these steps in order to recover your password:

1. Attach a terminal or PC with terminal emulation to the console port of the router.

Use these terminal settings:
* 9600 baud rate
* No parity
* 8 data bits
* 1 stop bit
* No flow control

2. If you can access the router, type show version at the prompt, and record the configuration register setting.

Router>show version

Note: The configuration register is usually set to 0×2102 or 0×102. If you can no longer access the router (because of a lost login or TACACS password), you can safely assume that your configuration register is set to 0×2102.

3. Use the power switch in order to turn off the router, and then turn the router back on.

Important Notes:
* In order to simulate this step on a Cisco 6400, pull out and then plug in the Node Route Processor (NRP) or Node Switch Processor (NSP) card.
* In order to simulate this step on a Cisco 6×00 with NI-2, pull out and then plug in the NI-2 card.

4. Press Break on the terminal keyboard within 60 seconds of power up in order to put the router into ROMMON.

If the break sequence does not work,Use Ctrl + Break

5. Type confreg 0×2142 at the rommon 1> prompt in order to boot from Flash.

rommon 1 > confreg 0x2142

This step bypasses the startup configuration where the passwords are stored.

6. Type reset at the rommon 2> prompt.

rommon 2 > reset

The router reboots, but ignores the saved configuration.

7. Type no after each setup question, or press Ctrl-C in order to skip the initial setup procedure.

8. Type enable at the Router> prompt.

Router>enable

You are in enable mode and should see the Router# prompt.

9. Type configure memory or copy startup-config running-config in order to copy the nonvolatile RAM (NVRAM) into memory.

Router#copy startup-config running-confi

Important: Do not type copy running-config startup-config or write. These commands erase your startup configuration.

10. Type show running-config.

The show running-config command shows the configuration of the router. In this configuration, the shutdown command appears under all interfaces, which indicates all interfaces are currently shut down. In addition, the passwords (enable password, enable secret, vty, console passwords) are in either an encrypted or unencrypted format. You can reuse unencrypted passwords. You must change encrypted passwords to a new password.

11. Type configure terminal.

Router#configure terminal

The hostname(config)# prompt appears.

12. Type enable secret <password> in order to change the enable secret password.

Router(config)#enable secret < password 

For example:

hostname(config)#enable secret cisco

13. Issue the no shutdown command on every interface that you use.

If you issue a show ip interface brief command, every interface that you want to use should display up up.

Router#show ip interface brief

14. Type config-register <configuration_register_setting>. Where configuration_register_setting is either the value you recorded in step 2 or 0×2102 . For example:

hostname(config)#config-register 0×2102

15. Press Ctrl-z or end in order to leave the configuration mode.

The hostname# prompt appears.

16. Type write memory or copy running-config startup-config in order to commit the changes.

• Pin It
• Share
• Tweet

Be Sociable, Share!

• 

Related posts:

1. How to Configure Line Console and Executive Mode Password in Cisco Router
2. Cisco 2500 Router’s Password Recovery
3. commands and configuration of CISCO Router’s
4. Cisco 2600 Router’s Password Recovery
5. How to Remove Console and Executive Mode Password

Tagged as: 3066 seris router password, 3600 seria router, 3600 seris password recovery, 3800 seris password recovery, 3800 seris router, 3800 seris router password recovery, how to recover router password, password recovery of 3600 seris router, password recovery of 3800 seris router, password recovery of router, Password Recovery Procedure for the Cisco 3600 and 3800 Series Routers, Recover Cisco 3600 and 3800 Series Router Password, recover router password, router 3600, router working