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Steps of Cisco 1941 password recovery

   |   3 comments in Cisco 1941 routers, Password Recovery September 12, 2013

We always receive such kinds of answers “I have a Cisco router that i forgot the password, i need to rest it if someone could help me?” or “Could everyone explain the procedure for password recovery associated with Cisco routers?” It’s no doubt that Cisco password recovery is one of the most popular problems during the process of using Cisco products.Cisco router password recoveryRecently, many friends asked me about steps of popular Cisco 1941 password recovery, now, let’s share it here:

1) Attach a terminal or PC with terminal emulation to the console port of the Cisco 1941 router. And please refer to these documents for information on how to cable and connect a terminal to the console port or the AUX port:

Cabling Guide for Console and AUX Ports

Connecting a Terminal to the Console Port on Cisco Catalyst Switches

Connect a Terminal to Catalyst 2948G-L3, 4908G-L3, and 4840G Series (if without those devices, replace it with the latest related switches.

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. See Example of Password Recovery Procedure in order to view the output of a show version command.

Note: The configuration register is typically set to 0x2102 or 0x102. 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 0x2102.

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

4) Press Break on the terminal keyboard a couple of times after you see the message program load complete, entry point: 0x80008000, size: 0x6fdb4c in order to put the router into ROMMON.

Note: The values of entry point and size are subjected to the routers.

If the break sequence does not work, refer to Standard Break Key Sequence Combinations during Password Recovery for other key combinations.

If unable to break into ROMMON mode, perform these steps:

Remove flash.

Reload the router. Router will end up in ROMMON mode.

Insert flash.

Perform standard procedure for Cisco 1941 password recovery.Cisco 1941 k9 password recovery5) Type confreg 0x2142 at the rommon 1> prompt in order to boot from Flash.

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

6) Type reset at the rommon 2> prompt.

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.

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.

Warning: Do not enter 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, and console passwords) are in either an encrypted or encrypted format. You can reuse encrypted Cisco router passwords. You must change encrypted passwords to a new password.

11) Type configure terminal.

The hostname (config) # prompt appears.

12) Type enable secret in order to change the 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.

14) Type config-register. Where configuration_register_setting is either the value you recorded in step 2 or 0x2102. For example:

hostname(config)#config-register 0x2102

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.

The material is referred from: http://blog.qsolved.com/2012/05/cisco-1941-k9-password-recovery-steps.html

More tips on Cisco 1941 and password recovery at:

Cisco 1941 VS 2901-Comparison Helps You Choose the Right Router

Cisco 1941 V.S. Cisco 1841-Regular Users Help You Find the Best Cisco Router

Full Overview of Cisco 1941-K9 router & Cisco 1941-SEC-K9 router

How to Recover Cisco 2921 & Cisco 2951 router password?

Tagged with: Cisco 1941, Cisco 1941 password recovery, Cisco 1941 troubleshooting, Cisco router password recovery
Comments (3)
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