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New Member

Not in Possession of Password for Cisco 871W

Recently, I purchased a Cisco 871W Router with which to practice/study for my CCENT with. Since I have made the purchase, it has given me nothing but headaches.

I cannot access the router to configure it, as the previous owner has a password set on it to access enable mode, which he/she has forgotten.

Here is the message that I receive when I attempt to log in into the router, to access enable mode.

[IMG]http://i548.photobucket.com/albums/ii336/BOB421C4/IMG_20120707_140325.jpg[/IMG]

Apparently there is supposed to be a one-time username and password of "cisco", but this is not the case.

I have tried to do a password recovery, following this post discussion thread:

https://supportforums.cisco.com/thread/193005

Unfortunately, this has not worked, and I am sure that I am doing something incorrectly. I am connected to the router via console cable and have tried power cycling the router and entering the break sequence, powercycling again, and then holding the spacebar down for 15 seconds. The preceding has produced no results to speak of. Following, I set my terminal emulator, Tera Term, to the baud rate of 1200, powercycled the router, and held down the space bar for 20 seconds. I then immediately set the baud rate back to 9600. Nothing occurred, once again.

Furthermore, I have followed the password recovery instructions set forth by Cisco.

http://www.cisco.com/en/US/docs/routers/access/800/850/software/configuration/guide/trouble.html#wp1038210

Nothing has come of these methods, either, and I do not see how they would work, or even apply to my situation, as Cisco seems to imply they should, as I cannot get into enable mode, let alone privileged mode or conf t mode, as the guidelines require.

Here is some info that may help in troubleshooting:

OS: Win 7 HP 64 bit

Terminal Emulator: Tera Term

Router is not currently connected to any sort of internet connection. Only the power cord and console cable are properly connected.

So, as it stands right now, I am plain confused and lost!

Hopefully this can be figured out quickly.

Everyone's tags (4)
1 ACCEPTED SOLUTION

Accepted Solutions

Re: Not in Possession of Password for Cisco 871W

Good. At least we know the router will accept some input. Mind you this doesn't get us very far unless we can login. Try using Cisco (Capital C) as the password. Also try entering no password at all.

If you can't login we really haven't made any progress other than confirming the Router is somewhat functional. We still need to get the router to recognize you keyboard input via the console port. Unless we can your terminal emulator / USB 2 DB9 adapter to work you are still faced with buy a new USB 2 DB9 adapter.

James

28 REPLIES
Silver

Not in Possession of Password for Cisco 871W

Connect to the router console port using a Cisco console cable (the port  will be the same colour blue as the console cable is - a kind of light,  sky-blue).

Use your terminal program with the following settings

9600

8 data, 1 stop bits

hardware flow control

Power on the router.

Do you see the startup proces? Do you see ANYTHING?

If you don't, then either your terminal connection is bad, or the router is dead. If you do, capture the output and paste it here.

Cheers

New Member

Re: Not in Possession of Password for Cisco 871W

Yes, the entire startup process is run, the configuration is grabbed from the NVRAM and run, and then, at the end, when RETURN is pressed to start, the text appears that is in the image posted above. Click the image link to see it.

Here is everything that appears when I boot up the router and try to enter what is supposed to be the one-time username and password of "cisco".

(In attached .txt file.)

Silver

Not in Possession of Password for Cisco 871W

Peter Ramacher wrote:

Yes, the entire startup process is run, the configuration is grabbed from the NVRAM and run, and then, at the end, when RETURN is pressed to start, the text appears that is in the image posted above. Click the image link to see it.

Here is everything that appears when I boot up the router and try to enter what is supposed to be the one-time username and password of "cisco".

(In attached .txt file.)

OK, that looks like a normal startup, with no indication that password recovery is disabled, so you SHOULD be able to break it.

When you're conected with TeraTerm, unplug the router, then plug it back in and start hitting ALT-B - forget CTRL-6 or the space bar, TeraTerm (assuming you're using 3.1.3 like I am) uses ALT-B to send the break command.

Hit this combination several times during startup until you get to the ROMMON prompt (once *should* be enough, but I've had to do it several times in the past) - it might take you a couple of boots to hit it at just the right moment - and once you're there the rest of the password recovery process should be pretty normal - set your config register to 0x2142, reset, then copy start run, no shut all interfaces, change your username/password with "username cisco password test", set the config register back to 0x2102, copy run start and you should be able to reboot the router and get back into it.

Cheers.

Not in Possession of Password for Cisco 871W

hi peter,

why not push the reset button behind to factory reset your 871?

New Member

Re: Not in Possession of Password for Cisco 871W

The reset button appears to do nothing at all.

I am trying to get the ALT-B sequence entered at the right time as I type this message.

I'll post back soon.

Also, should any of the boot up sequence run and appear on Tera Term after ALT-B is hit? I just cannot seem to get it right.

New Member

Re: Not in Possession of Password for Cisco 871W

I am not getting anywhere by powering on the router and then immediately pressing the "ALT-B" key sequence. The router just proceeds to run through its normal boot sequence. ROMMON mode does not appear.

Currently, I am using Tera Term version 4.74, and I see no information regarding the fact that the break key sequence may be different for this version.

I am going to try another terminal emulation program, and hopefully some of you guys will have more input and knowledge with regard to this situation.

Okay, I just tried HyperTerminal and attempted to use the CTRL-F6 break sequence that it supports. This dd nothing. The bootup sequence ran normally.

I then tried the break sequence simulation that Cisco recommends here:

http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080174a34.shtml

This also produced no results.

I am stuck on what to do next, and am tired of wasting time with this router. I would like to move onto getting to know the CLI and SDM better, as planned, but this is standing in my way.

Hall of Fame Super Gold

Re: Not in Possession of Password for Cisco 871W

Try a different USB/serial adapter. Also try Putty, or Kitty.

New Member

Re: Not in Possession of Password for Cisco 871W

I don't have another USB/serial adapter.

I downloaded and tried to use Putty before trying Hyperterminal, but Putty would not begin a Serial connection for me.

The settings appear to be correct. I hit open, but nothing occurs.

http://i548.photobucket.com/albums/ii336/BOB421C4/Putty.jpg

Hall of Fame Super Gold

Re: Not in Possession of Password for Cisco 871W

You will need an adapter that produces break correctly. The one you're using likely doesn't.

New Member

Re: Not in Possession of Password for Cisco 871W

Do you have any recommendations for me, Paolo?

I am not sure what I should purchase this time around.

Cisco Employee

Re: Not in Possession of Password for Cisco 871W

Peter and Paolo,

I do not want to invade this thread - this is clearly Paolo's thread and I respect that, just a suggestion:

The "break" sequence is in fact not a character sent through the serial console at all. Rather, if the Tx line is held at logical 0 for a longer time than is required to transmit a single character, this event is considered a break.

Therefore, an alternate way of generating the break is to configure the COM port (or the USB-to-COM) to a low speed, say, 1200bps, and hitting several keys in hope they will cause the Tx line be pulled to logical 0 for enough time to make the CON port on the router (still running at 9600bps) treat that as a break. This has to be done fairly quickly during the router bootup phase while the # signs are being displayed. Of course, after making this experiment, one has to reconfigure the COM port back to 9600bps to see if the experiment had any effect.

Peter, would you mind trying this?

Best regards,

Peter

New Member

Re: Not in Possession of Password for Cisco 871W

Peter, thank you for lending some assistance. I appreciate it.

When I set the BPS to 1200 and then power on the router, all that I see is gibberish displayed. The boot sequence does not appear, so I cannot attempt to press random keys during the displaying of the #'s. Just to be sure, I tried pressing some random keys while the gibberish was displaying at the 1200 BPS setting, but this did nothing. I also pressed random keys while the router was displaying the #'s during the boot up, with the BPS set at 9600. This resulted in nothing as well.

Do I have a setting incorrectly set here?

Re: Not in Possession of Password for Cisco 871W

Try connecting with each of the available flow control settings.

James

New Member

Re: Not in Possession of Password for Cisco 871W

pompeychimes wrote:

Try connecting with each of the available flow control settings.

James

Just tried that, no difference.

I am looking at picking up this Keyspan USB to Serial converter cable. It is aid to support the Cisco break sequence. Any thoughts on it?

http://www.amazon.com/Keyspan-USA-19HS-Hi-Speed-supports-Sequence/dp/B0000VYJRY

Does anybody have recommendations on console cables for me, to ensure that I have a proper connection to my Cisco devices that supports all Cisco commands?

Not in Possession of Password for Cisco 871W

Did you try no flow control?

At this point I'd be trying different apapter (Better still a legacy serial port) and even a different PC. If you buy an adapter buy one from a company like Belkin or Star Tech. Make sure they have windows 7 (32 and 64bit) drivers.

Another thought. Can you connect a dhcp client (PC) to one of the LAN ports. If you are lucky you'll pull an IP. You could then attempt to telnet to it. If only to see if the CLI responds to your commands.

James

New Member

Re: Not in Possession of Password for Cisco 871W

I did try no flow control along with both hardware and Xon/Xoff. The results were the same.

In leui of your suggestions, pompey, I am looking at getting this StarTech USB 2.0 to Serial adapter.

http://www.startech.com/Cards-Adapters/Serial-Cards-Adapters/1-Port-USB-to-Serial-RS232-Adapter-Cable-with-COM-Retention~ICUSB2321F

What are your thoughts on it, and is there a better version that you would go with, yourself?

I will also try to Telnet to the router through my DHCP enabled desktop.

New Member

Re: Not in Possession of Password for Cisco 871W

I just tried to Telnet to the router via Tera Term, but the connection would just time out, and would not connect to the router.

Re: Not in Possession of Password for Cisco 871W

Not to get too far off topic. But I assume your PC received an IP from the Router via DHCP and that the IP address you tried to telnet to was the same as your default gateway? Did you also try ssh 1 and 2? Can you ping the IP?

Regarding Star Tech. I haven't used that particular model however its hard to go wrong with Star Tech. They have rock solid support in my experience. Plus it supports W7 32 and 64 bit.

Its a shame you have to buy something. Don't you have access to a PC with a legacy serial port to test it. Maybe at work? The USB 2 DB9 adapter often clouds problems like these.

James

New Member

Re: Not in Possession of Password for Cisco 871W

Yes, my home network is setup with DHCP.

In review it probably was the default gateway that I tried to Telnet to. How am I to Telnet to the router if I do not know its IP address?

I will try SSH 1 and 2, and try to ping the IP once I am informed of how to find what it is.

Sadly, I do not have access to a PC with a legacy Serial port. I am 18, and do not work a traditional job. I am merely trying to get my CCENT, and then my CCNA, as I am going for a degree in MIS, and would like to get into Netwrok Consulting.

Re: Not in Possession of Password for Cisco 871W

OK I understand. If we want to continue down the telnet route do the following. I'm being very verbose now just to ensue we are on the same page. Also note that I'm gambling that the Router is setup as a DHCP server so that when you connect to it with a LAN cable it gives you an IP.

1. Disconnect your PC from any other network wired or wireless.

2. Connect a network cable from your PC to one of the LAN interfaces on the back of the router.

3. From the PC's command prompt issue the following command ipconfig/release followed by ipconfig/renew

4. Does the ipconfig/renew command present you with an IP address, subnet mask, and default gateway?

- If you get a media disconnected message when issuing any ipconfig command replace the network cable with a xover cable if you have one

- If the ip address starts with 169.254 your PC can't find a DHCP server

- If you get an IP address other than one starting with 169.254 try telneting to you default gateway. If telnet doesn't work try ssh v1 and v2

5. If you get connected try to enter a usename and/or password. The goal is to see if it recognizes anything you type

James

New Member

Re: Not in Possession of Password for Cisco 871W

Alright, that's awesome, your suggestion worked, pompey! Now we may be able to get somewhere.

I was able to enter the username of "cisco", as prompted, but when I entered the supposed password of "cisco", nothing occurred after 4-5 minutes of watching Tera Term.

What's our next step?

Re: Not in Possession of Password for Cisco 871W

Good. At least we know the router will accept some input. Mind you this doesn't get us very far unless we can login. Try using Cisco (Capital C) as the password. Also try entering no password at all.

If you can't login we really haven't made any progress other than confirming the Router is somewhat functional. We still need to get the router to recognize you keyboard input via the console port. Unless we can your terminal emulator / USB 2 DB9 adapter to work you are still faced with buy a new USB 2 DB9 adapter.

James

New Member

Re: Not in Possession of Password for Cisco 871W

Thank you very much for your help, James.

I will try your suggestions, and purchase a new usb to serial cable, if necessary, when I get back from college orientation on Saturday.

New Member

Not in Possession of Password for Cisco 871W

Okay, I'm back, and I tried using Cisco as the password, as well as no password whatsoever.

I forgot to order a proper USB 2.0 to DB9 console cable while at the hotel on Thursday night, but I did order one last night. In the end, I went with the StarTech one that I linked to previously.

Here it is again: http://www.startech.com/Cards-Adapters/Serial-Cards-Adapters/1-Port-USB-to-Serial-RS232-Adapter-Cable-with-COM-Retention~ICUSB2321F

Not in Possession of Password for Cisco 871W

OK so you are in a holding pattern till you get the adapter. When you do lets hope the Router responds to your keyboard input.

James

New Member

Not in Possession of Password for Cisco 871W

Yes, sadly.

I really do hope that a proper adapter allows me to enter the break sequence to access Rom Monitor mode.

Otherwise, I will try to send the router back.

Thanks again for your help, James.

New Member

Not in Possession of Password for Cisco 871W

Alright, the StarTech USB to DB9 Serial cable came today!

I installed the drivers, connected it to the router, booted up, entered the break sequence, and was allowed into ROM Monitor mode.

I then typed "reset", and all appears to be good!

No I can get going with configuring this router!

Thank you to all who helped, especially you, James.

Not in Possession of Password for Cisco 871W

U are welcome.

Jamees

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