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Beginner

How to reset Cisco 3800 series password?

I have Cisco 3800 series router it needs user name and password to access through terminal I don't have the user name and password please help me to reset the password.

Terminal screen shot is attached here you can see that.

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Accepted Solutions
Cisco Employee

How to reset Cisco 3800 series password?

Hi Sayed,

Please try to access via console first and if it is also blocked with login/password, follow this step-by-step password recovery procedure:

http://www.cisco.com/en/US/products/hw/routers/ps274/products_password_recovery09186a0080094774.shtml#procedure

Kind Regards,
Ivan

**Please grade this post if you find it useful.

Kind Regards, Ivan Shirshin **Please grade this post if you find it useful.

View solution in original post

5 REPLIES 5
Cisco Employee

How to reset Cisco 3800 series password?

Hi Sayed,

Please try to access via console first and if it is also blocked with login/password, follow this step-by-step password recovery procedure:

http://www.cisco.com/en/US/products/hw/routers/ps274/products_password_recovery09186a0080094774.shtml#procedure

Kind Regards,
Ivan

**Please grade this post if you find it useful.

Kind Regards, Ivan Shirshin **Please grade this post if you find it useful.

View solution in original post

Beginner

Re: How to reset Cisco 3800 series password?

Thanks that worked

Now I configured Gi0/1 with private ip 192.168.1.1 and Gi0/0 with public ip 182.50.190.140  I set the default gateway to182.50.190.140 and also enabled IP Routing but clients cann't access internet if you know step by step procedure please help.

Advisor

How to reset Cisco 3800 series password?

Hi,

int g0/1

ip nat inside

int g0/0

ip nat outside

access-list 10 permit 192.168.1.0 0.0.0.255

ip nat inside source list 10 interface g0/0

ip route 0.0.0.0 0.0.0.0 x.x.x.x  where x.x.x.x is the next-hop router IP

To verify: from  a client ping 8.8.8.8.

if it ain't working just tell us and we'll teel you what to verify.

Regards.

Alain.

Don't forget to rate helpful posts.

Don't forget to rate helpful posts.
Beginner

Re: How to reset Cisco 3800 series password?

I have a 3845 where the login creds tag from another admin was scraped off accidentally.

I cannot access the reset instructions in the link due to model end of life, Cisco moved the document.

Does anyone have a current link or the old information?

Thanks!

Participant

Re: How to reset Cisco 3800 series 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.
Related Products
Refer to Password Recovery Procedures for information on how to recover passwords for related products.
Conventions
Refer to Cisco Technical Tips Conventions for information on document conventions.
 

Step-by-Step Procedure

Follow these steps in order to recover your password:
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
If you can access the router, type show version at the prompt, and record the configuration register setting.
Note: The configuration register is usually 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.
Use the power switch in order to turn off the router, and then turn the router back on.
Important Notes:
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, refer to Standard Break Key Sequence Combinations During Password Recovery for other key combinations.
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.
Type reset at the rommon 2> prompt.
The router reboots, but ignores the saved configuration.
Type no after each setup question, or press Ctrl-C in order to skip the initial setup procedure.
Type enable at the Router> prompt.
You are in enable mode and should see the Router# prompt.
Type configure memory or copy startup-config running-config in order to copy the nonvolatile RAM (NVRAM) into memory.
Important: Do not type copy running-config startup-config or write. These commands erase your startup configuration.
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.
Type configure terminal.
The hostname(config)# prompt appears.
Type enable secret <password> in order to change the enable secret password. For example:
13. hostname(config)#enable secret cisco
14.             
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.
Type config-register <configuration_register_setting>. Where configuration_register_setting is either the value you recorded in step 2 or 0x2102 . For example:
17. hostname(config)#config-register 0x2102
18.             
Press Ctrl-z or end in order to leave the configuration mode.
The hostname# prompt appears.
Type write memory or copy running-config startup-config in order to commit the changes.
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