Question about Cisco Aironet 1131AG 802.11a, 802.11g/b (746320933474) Wireless Access Point

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Cisco Router Boot Loop

I am trying to set the IP of my Cisco Router yet Hyperterminal just shows as the state being constantly up and down every couple of seconds. It doesn't even give me time to enter a command at all. I have tried Ctrl Break but that diesn't seem to work.

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  • katvn Nov 05, 2008

    I actually solved this problem with a bit of trial and error. I ended up having to also plug in a cross over cable between the router and the computer (as well as the console cable). That seemed to fix it! All fixed now, thanks.

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You need to follow the steps to perform a password recovery on the router.
don'y actually perform the password recovery step, but you need to get a uncorrupted copy of the isos installed.

then try again.

I have assumed that when you power on the device you are able to see the boot process in hyperterminal, then just befor you get to type anything the unit reboots.

Posted on Nov 05, 2008

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1 Answer

Breaking password on cisco 857w


When the router first starts booting you need keep hitting the break sequence which should be crtl+F6 and that should bring you to ROMMON mode. you should get a prompt rommon 1>, that means you did it right. Now you need to change the configuration registers to 0x2142 by typing "confreg 0x2142". then type reset to restart the router. It should now ignore the saved config. hit crtl+c to cancel the initial setup, type "enable" to get to the enable prompt. Next type "copy startup-config running-config" to copy the startup configuration to the running configuration. Next type "configure terminal" to enter global configuration mode. Now you can type "enable secret <password>" to change the password to what you want. Last you need to change the config registers back to 0x2102 by entering the command config-register 0x2102.

Feb 17, 2012 | Cisco 857 ADSL Wireless Router...

1 Answer

Garbage in Cisco 1841


There are two things that can cause this:
  1. Incorrect serial settings. The default settings are 9600 baud, stop bits of 1, and parity 0. However, it is possible that these settings were changed. Likely, the baud setting may be higher as someone may have tried to XMODEM an IOS image onto the device and wanted faster speeds.
  2. Bad connection, cable
I hope this answers your question.

Jan 06, 2012 | Cisco (1841) Router (cisco1841)

2 Answers

How to use hyperterminal


Run HyperTerminal in Windows by going to Start > Programs > Accessories > Communications > HyperTerminal.
After clicking on the HyperTerminal icon, you will see this window:
hyperterminal_1_small.jpg
HyperTerminal prompts you to create a new connection. Note that this is not required but let’s go ahead and do it.

Type in the word cisco for the connection name and click OK.
Connect your Cisco device to your PC’s COM1 port but don’t turn it on yet. On the next window that appears, make sure that the “Connect Using” field says COM1 and click OK.
hyperterminal_2_small.jpg
On the next window, change the Baud rate to 9600 and click OK.
hyperterminal_3_small.jpg
Now, turn on your Cisco device. In the HyperTerminal window, you should see the boot up process for your device, like this:
hyperterminal_4_small.jpg
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When you are done and try to close out HyperTerminal, you will be asked if you want to save this connection. I suggest saving it with the name you gave it, cisco, so that you don’t have to configure it again next time.

Apr 13, 2010 | Cisco Aironet 1142 (AIR-LAP1142N-A-K9)...

2 Answers

I need to connect cisco 2800 router to my pc through hyperlink


I think you mean hyperterminal? you need a cisco serial cable (blue) and a serial port on your PC, maybe a USB to serial adapter if there isn't one. Set hyperterminal to use the COM port you have plugged in to, speed 9600 8 bit no parity. (8N1).
Without the serial cable you need to know the router IP and password.

Oct 31, 2009 | Cisco (UBR904) Router

1 Answer

Cisco router 857


hey you are saying that you want to configure the router,, but rommon mode is for breaking the password....do u forget the password of the router......can you explain why u need to log in through rommon mode

Nov 30, 2008 | Cisco 857W (882658019555) Router

1 Answer

I have cisco router 857 and dont know how to configure


Hi!
You can access the user manual for your router by going to:  http://www.cisco.com/en/US/docs/routers/access/800/850/software/configuration/guide/857sg_bk.pdf

But simply put,  - You have to enable the web interface in Hyperterminal/Telnet/Terminal - To connect to your router this way, open your Terminal and type the following commands in order:
1) enable (enter password if necc.) 2.) config term 3.) ip http server (this command might also be set to "no ip http server") 4.) exit
After doing the above: 1.) Press Cntrl+Z 2.) Go to Copy, Run, Start 3.) Open your browser and go to "10.10.10.1"
Good luck! -TJ

Nov 30, 2008 | Cisco 857 Router (CISCO857K9)

1 Answer

Cisco 1721 router serial port not showing any loop.


the problem is with your modem....did you tested the local loop from router to modem....are u getting local loop from one modem till router or not...try first checking local loop from modem to router...

Nov 15, 2008 | Cisco 2610XM Router

2 Answers

Boot Loop


you may have to reload the OS of the router.
i dont suppose you can kick it into romon mode can you? (usually done by hitting the pause break button on boot.)

if you can you should be able to use Xmodem to reload the OS (as long as you have a copy of it located on your computer)

Mar 11, 2008 | Cisco 1603-R Router

2 Answers

Router cannot get IP with cisco 675 modem


Hi,

The issue may be due to the existence of two (2) DHCP servers; 1 in the Cisco 675 and the 2nd in the DLink DI-524. You need to disable the Cisco's DHCP server function and assign static IP add & config to the DLink WAN config. This way it will only be the DLink handing out IP adds to the network.

The workaround. Install your original configuration/setting without the DLink DI-524 - PC direct to the Cisco 675 (I am assuming through Ethernet ports). Verify that indeed you are connected to the Internet and can surf the net, check e-mails, etc. Check your Networking Connection Status. Log down your PC's IP Add, Subnet Mask, Default Gateway, DNS. For purposes of discussion, let's call this "N1".

After your Internet connection has been verified with your PC directly connected to the Cisco, remove the direct connection and connect the DLink DI-524 in between the Cisco router and your PC.

Log in to the DLink and modify WAN parameters using the "N1" configurations/settings.

It might be of help to disable any security (WEP WPA, MAC etc) at least while configuring.

Hope this be of help/idea. Pls post back how things turned out or should you need additional information.

Good luck and kind regards.

Feb 01, 2008 | Cisco 675 Router

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