Question about Cisco 3660 SERIES IOS Router (cd366-cp=)

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I have a Cisco router 3660 that halts after loading its boot image: see below: System Bootstrap, Version 12.0(6r)T, RELEASE SOFTWARE (fc1) Copyright (c) 1999 by cisco Systems, Inc. C3660 processor with 131072 Kbytes of main memory Main memory is configured to 64 bit mode with parity disabled program load complete, entry point: 0x80008000, size: 0x1eb5a20 Self decompressing the image : ############################################################################################################################################################################ [OK] Nothing else afterwards.

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  • leivaae Sep 25, 2009

    I will try swapping Flash memory first and RAM afterwards, if the Flash swap doesn't work. I do have good Flash and RAM from another working Cisco 3660. I'll post the results later on.
    Thanks for the links.

    Angel

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  • Mitesh Kr Anand Sep 25, 2009

    Sure, go ahead. if the issue persists then let me know.


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1 Answer

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


Did you do anything to the compact flash, like try to format it and copy an image to it? Cisco routers are very picky about the formatting on the flash. It has to be formatted FAT16 and the image has to be the first file on the card.

Jul 24, 2017 | Cisco Computers & Internet

1 Answer

The router starts and finish POST then decompress image file from flash memory then shows this message: System Bootstrap, Version 12.3(8r)T8, RELEASE SOFTWARE (fc1) Technical Support:...


I don't really know what your asking but i guess you want to know why your startup-config doesn't load. What your router is displaying is normal. You need to change the configuration register.
1.Let the router load then if asked select Yes to abandon autoinstall, then select No to skip initial setup. Press return (enter button) when asked.
2. Now type the following at the prompts. (you type the bold stuff press enter after each command)
router>enable
router#conf t
router(config)#config-register 0x2102
router(config)#exit
router#reload
........save changes blah blah blah.. type NO
continue with reload Yes
providing you have a startup-config, the router will now load it on bootup.

Hope this helps
Pokeabeaver

May 12, 2011 | Cisco (1841) Router (cisco1841)

1 Answer

Cisco 2514 does not switch on straight away. It powers on about 1min after switch depressed. it also loses the correct date and time if switched off.


if you issue the command show version
At the bottom written in bold you should the config register settings these nee to be as shown at the bottom of this page


R1#show version
Cisco Internetwork Operating System Software
IOS (tm) 2500 Software (C2500-JS-L), Version 12.1(3), RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2000 by cisco Systems, Inc.
Compiled Thu 06-Jul-00 10:02 by cmong
Image text-base: 0x0306F914, data-base: 0x00001000

ROM: System Bootstrap, Version 11.0(10c), SOFTWARE
BOOTFLASH: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c), RELEASE SOFT
WARE (fc1)

R1 uptime is 1 day, 5 hours, 39 minutes
System returned to ROM by power-on
System image file is "flash:c2500-js-l.121-3"

cisco 2500 (68030) processor (revision N) with 14336K/2048K bytes of memory.
Processor board ID 11844920, with hardware revision 00000001
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
Basic Rate ISDN software, Version 1.1.
1 Ethernet/IEEE 802.3 interface(s)
2 Serial network interface(s)
1 ISDN Basic Rate interface(s)
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read ONLY)

Configuration register is 0x2102

if yours differs the use the these commands to correct it


R1>en
R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#config 0x2102
R1(config)#^Z
R1#


Hope this helps

Mar 15, 2011 | Cisco 2514 Refurbished Router (CSCO2514)

1 Answer

Cisco 1721 Router IOS


I can help you with the IOS you need, but Cisco does not list 12.3.x XC, they only have YZ, YG, XR, XK, XG for this router. Email me at thrca@thrca.com for more help.

Aug 30, 2009 | Cisco (WIC-4ESW) 4-Port Ethernet Switch...

1 Answer

''!!! WARNING: The switch is not usable !!!''


Unfortunately the show stack isn't showing any results other than it is either a hardware or software fault. I am guessing it is a fault with the hardware as the show version in your first post states "interface Ethernet-controller 4 failed POST POST error status : general error occured".

Ethernet-controller 4 is one if the gigabit ports (poss fibre port), so if you have anything attached to those, disconnect and reboot the switch and see what happens. If that doesn't work, you could try reinstalling the IOS, but at a guess I would say its a hardware fault.

Jun 01, 2009 | Cisco Catalyst 3550-24 24-Port Ethernet...

1 Answer

Bootup Router and then nothing


Hi,
Your router is in the wrong mode. You need to change this by changing the conf-register to 0x2102

at the rommon prompt type in

config-reg 0x2102

reboot

If there are any errors you can get the correct syntax by typing ? at the rommon prompt the line number will go up on every line.

The way to get into rommon mode is by pressing the break key from Hyperterminal as the router is rebooting. So make sure you don't do this by accident. If you do just reboot by power cycling.

Your Startup Config should be unchanged, but you need to be very careful what you do in rommon mode it is easy to blat stuff.

Any changes you make once you get into the command (enable) mode should be saved by
copy running-config startup-config

Any problems just let me know.

good feed back would be much appreciated.

Carrie

Dec 05, 2008 | Computers & Internet

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

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