Question about Cisco (1841) Router (cisco1841)

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Scramble on my cisco 1841

I have a cisco 1841, but now it's have an error. while it booting it will be display like below:
ooooooooooooXXXXXCCCCCCooooooooXXXXoooooooCCCCCCoooo
ooooooooooooooooooooooo

so.. what should i do, i want to restore it to default factory.

please help me..

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  • 97 Answers

It sounds like the IOS is corrupt, and you will need to copy the IOS back to the router again. It could also be the flash memory that has gone faulty.

If you can get to any prompt on the router and you have a copy of the IOS, you can re-flash the IOS and see if that helps. If you can not telnet to the device you will need to connect via the console port, and ZModem or similar the image to the router.

Posted on Oct 16, 2010

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1 Answer

Connect to cisco 1841


This is more of a business unit. It requires a serial port connection and a fair amount of CISCO networking engineering knowledge. It is command only. No GUI interface.

Jan 30, 2013 | Cisco (1841) Router (cisco1841)

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Cisco 1841 Router, Hot Sales Product Cisco 1800 Business Router


The Cisco 1841 router is designed for secure data connectivity and provides significant additional value compared to prior generations of Cisco 1700 Series routers by offering more than a fivefold performance increase and integrated hardware-based encryption enabled by an optional Cisco IOS Software security image.<br /><br />The <a href="http://www.router-switch.com/cisco1841-p-97.html">Cisco 1841</a> dramatically increase interface card slot performance and density over the Cisco 1700 Series while maintaining support for more than 30 existing WAN interface cards (WICs) and multiplex trunk cards (voice/WICs [VWICs]-for data only on the Cisco 1841 router).<br /><br />The <a href="http://www.router-switch.com/cisco1841-p-97.html">Cisco 1841 router</a> offers embedded hardware-based encryption enabled by an optional Cisco IOS Software security image; further enhancement of VPN performance with an optional VPN acceleration module; an intrusion prevention system (IPS) and firewall functions; interfaces for a wide range of connectivity requirements, including support for optional integrated switch ports; plus sufficient performance and slot density for future network expansion and advanced applications as well as an integrated real-time clock.<br /><br />Cisco 1841 router Product Details<br />Product Description Cisco 1841 router<br />Device Type Router<br />Form Factor External - modular - 1U<br />Dimensions (WxDxH) 34.3 cm x 27.4 cm x 4.75 cm<br />RAM 128 MB (installed) / 384 MB (max) - SDRAM<br />Flash Memory 32 MB (installed) / 128 MB (max)<br />Data Link Protocol Ethernet, Fast Ethernet<br />Network / Transport Protocol IPSec<br />Remote Management Protocol SNMP<br />Digital Signaling Protocol ADSL over ISDN<br />Features Cisco IOS IP Broadband , firewall protection, 128-bit encryption, hardware encryption, VPN support, VLAN support, Intrusion Prevention System (IPS), 256-bit encryption<br />Power AC 120/230 V ( 50/60 Hz )<br />System Requirements Microsoft Windows 98 Second Edition<br /><br />P.S. If you would like a new sealed Cisco 1841, the competitive price offered at RouterSwitch.com is US$586.00 per. Visit Cisco 1841 to see more...<br /><br />Notes: Router-switch.com is a World's Leading <a href="http://www.router-switch.com/">Cisco Supplier</a>, founded in 2002. It sells new, used and refurbished Cisco network equipment including Cisco routers 800/1800/1900/2800/2900/3800/3900 series, Cisco switches, Cisco Firewalls Security, Cisco IP Phones VOIP, etc.<br /><br />

on Jul 07, 2011 | Computers & Internet

1 Answer

Flash: compactFlash not present


Please check the below point and revert if any queries




  • Default/maximum:32 MB/128 MB compact flash,128 MB/384 MB synchronous dynamic RAM (SDRAM)
  • The Cisco 1841 Router has a single, external compact flash memory. This is the only flash memory for the system and should never be removed whenever ROM Monitor (ROMMON) is being updated with a new image or configurations or when the compact flash LED light "busy" is on.

Feb 02, 2011 | Cisco (1841) Router (cisco1841)

1 Answer

Flash: CompactFlash not present I am getting above error when i power on a cisco 1841 router


Please check the below point and revert if any queries





  • Default/maximum:32 MB/128 MB compact flash,128 MB/384 MB synchronous dynamic RAM (SDRAM)
  • The Cisco 1841 Router has a single, external compact flash memory. This is the only flash memory for the system and should never be removed whenever ROM Monitor (ROMMON) is being updated with a new image or configurations or when the compact flash LED light "busy" is on.

Sep 20, 2010 | Cisco (1841) Router (cisco1841)

1 Answer

Cisco 1841 reads, Compact flash not found.


Perhap, your Compactflash is not be formated before you insert it into the slot of the Router.

Feb 11, 2010 | Cisco (1841) Router (cisco1841)

1 Answer

Change IP address of Cisco 1841


once in enable mode, goto config mode. then select interface, i.e. f0/0 and then type in the following:
ip address x.x.x.x y.y.y.y where x is your IP address you wish to have and y is the subnet mask
example below:

router#config t
router(config)#int f0/0
router(config-if)ip address 10.0.0.1 255.255.255.0

hope this helps!

Oct 28, 2009 | Cisco 1841 Router

1 Answer

Cisco VPN Issue


If you are using the firewall feature set on the 1841 then make sure, you have all permit statements right and nonat statements in place. Try command line as well and go over some router to router example configs from Cisco's website

Jun 13, 2009 | Cisco 1841 Advanced Security Feature Pack...

3 Answers

Cisco 1841 Freezing at System Configuration Dialog


Try resetting its firmware or try booting it in another location.

May 08, 2009 | Cisco (1841) Router (cisco1841)

1 Answer

Ethrnet problem for cisco 1841 router?


Hi

You must enter the interface configuration mode and issue the command:

no shutdown

Mar 19, 2009 | Cisco (1841) Router (cisco1841)

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