Re-Set Cisco Router

Hello Experts

I have a client who has a Cisco 851W router.  The employee who set it up is no longer with the company.  He took the router credentials with him, so there are two concerns:  One is the possibility of remote access and the other is that the users have no access.  I placed a loaner router to ease their concerns, but I still need to clear it to factory state and rebuild it with new (recorded) credentials.

I checked the Cisco website, looking for password resets, but all the information I found there assumed the user has access.  Does anyone know how to reset it to factory state?  I have all the settings necessary to restore it.  I just can't get in.

Any assistance will be much appreciated.

Thanks

thedslguy
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thedslguyComputer and Network ConsultantAsked:
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str8jacket29Commented:
You may want to check here, there are several different ways to send break.     https://supportforums.cisco.com/thread/2025407
wr_memCommented:
Just reload with your config cable attached and putty running.. Send the break command when it says you can interupt.. do an init_flash followed by a dir flash:.. Then either remove or rename the config.. boot
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Darr247Commented:
http://www.cisco.com/en/US/docs/routers/access/800/850/software/configuration/guide/857sg_bk.pdf might come in handy, too.
That's for 850 and 870 series.

Reset instructions are on page 151 (of 196).

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j_mnemonicCommented:
when you turn on the router with config-register in 0x2142 the router will ignore the configuration, but the configuration is on nvram.

You can make an "show startup-config" to show the configuration.

If the passwords are in "type 7" encryption, you can decrypt it.
Look for "enable password 7 XXXXXXXXXXX"
Copy the encrypted text, look in Google "Cisco password 7". Are some pages where you can paste the encrypted text and get the clear password.

Sorry my poor english.
thedslguyComputer and Network ConsultantAuthor Commented:
Hello all

I have tried the various suggestions that you have given, but to no avail.

I am using HyperTerminal in Windows 7 and have not been able to send a break command.  When the router boots it continues through the startup sequence and ends with a request for username and password.

It does tell me the publicly known credentials (cisco and cisco) and to use them to change login.  I've tried that but the new credentials I give don't work.  

Is there a way into this that completely resets it?  I don't need any of the old configuration so it's fine to reset the router to factory state.

Thanks again

tdg
j_mnemonicCommented:
For newer machines running Windows XP, Vista, or Windows 7 using Hyperterminal with no BREAK key available on the keyboard, try to use PAUSE key instead. Therefore instead of issuing CTRL-BREAK combination key, try to issue CTRL-PAUSE combination key instead.
thedslguyComputer and Network ConsultantAuthor Commented:
j_mnemonic


Thanks for the quick response.  I got our my wife's laptop (XP) and I was able to send a break command.   Now I have the  rommon 1 > prompt

Thanks again.  I'll post again when I have an update.

tdg
thedslguyComputer and Network ConsultantAuthor Commented:
Well, I got the running configuration cleared and a new password set.  The running configuration was no longer working and this is why we needed to access the router, so all is well.  I may need more assistance getting the new configuration set (been a while since the Cisco classes), but that would be another question and a new set of points.

The most help was  the link to the pdf file, but without being able to send the Break command, that file wasn't much use.  So I split the points appropriately to their value to the solution.

Thanks for the help.

tdg
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