Cisco Switching/Routing :: 1841 - No Console Access When Booting - All Green LED On
Feb 29, 2012
today I received a Cisco 1841 Router with a problem i have never seen before. Maybe this my 1st really,really broken Cisco Router. When I power the Router on, the fan and all lights turn on (green) and that's it. Nothing changes, also after minutes of wating. On console i don't get any messages and I already tried every BAUD rate possible. Switched the router off/on again and again. And no, it's obviously not a console problem of my computer, because i tried with different routers.
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Mar 4, 2013
I have two LAP1041 with WLC2504 everything works fine. But since yesterday when it boots up it flashes green, then solid green, then after about 10 seconds the green LED turns off, however the LAP is still working fine, Why is that? If I put my eyeball up close to the LED I see dim red inside the LED plastic cover.
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Jan 18, 2011
Recently we had a situation where our users were unplugging one of our un-mounted 1252 LAPs. They would do this so they could borrow the wire to direct connect any one of their devices not realizing they were disconnecting a wireless access point. After discovering that the AP was unplugged once again, our admin plugged the AP back to the network but noticed that it no longer would connect to the controller. We can no longer console into the AP but can console into all other APs we have. All 3 lights are now green. Radio and Ethernet are solid and Status is blinking. I found the Cisco doc explaining the meaning of the front panel lights but have not found this particular configuration. What these lights mean and why not being able to use the console port?
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Nov 29, 2011
On a SF300-08, how to work with CLI and not with the Console Menu Interface ?
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Dec 27, 2012
I have 2960 switch and i can't access it using my console cable .I can access other switches in my network ( 3560 & 2960 ) but i can't access only this switch.may be the console port in the switch damaged? or it's a bug ?? !!! although the switch is worked normally.
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Jun 30, 2012
I just purchased a used Catalyst 2900 XL switch and have not been succesful in connecting to the console via minicom 2.5 running on Ubuntu 12.04 or 11.10, I don’t even get junk charecters in the terminal or echo on input. The switch passes POST according to the LEDs on the front and the network ports are fucntional for switching purpouses.
I’m using a Prolific PL2303 USB-Serial adapter, which works with minicom to console into another device. I’ve tried every baud rate available and tried combonations of hardware flow control, software flow control, and niether.I’ve tested the pinout of the console cable and all pins map correctly according to Cisco spec.I’ve also tried Cutecom, putty, and screen. I have not tried HyperTerminal because I do not use windows.Is it possible that the previous owner disabled console access? Do I need to reboot the switch each time I test a different baud rate?
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Jan 11, 2012
I not able to access cisco 2811 router (AC operated) through console port when I try to access it by selecting COM Port, but I able to access by selecting the TCP/IP option.
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Jan 1, 2011
I have Cisco 1841 Router with no WIC cards and USB.
Image is ipbase and on the flash. When it boots it gives the error and hangs - I changed the register value to 0x2142 but no change happened.
Following are the capture from the router .
System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)
Technical Support: [URL] (c) 2006 by cisco Systems, Inc.
Copyright
[Code]......
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Oct 31, 2012
i have router 1841 have 2 interface.i make routing between vlan by subinterface in router and in switch trunk but vlan 5 cannot access internet
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Jan 22, 2012
I have a 1841 deployed as my NAT device towards internet. NAT is setup so that internal addresses can access WWW. I also have some NAT translations opening speciic ports from outside to inside in the form: ip nat inside source static tcp A.B.C.D 443 A.B.C.D 443 extendable.
Now have an outside address/port setup with a public DNS reference and using NAT from outside to get access to the corresponding inside address. It works when being outside the LAN.
Now to the problem: From the LAN side of the router - i cannot access the public name. I can ping it - but my browser dont find the webserver behind the name. Someone told me it should be setup as "local firewall domain" - and i should set this up as "source NAT".
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Sep 9, 2012
I have restricted access to users using TCP/IP using cisco 1841 router in my organization.
I need to permit some sites for users which are part of work..
The issue here is I cannot ping to the site but able to browse to that site when having internet access, i have permitted range the entire range of that IP's but still no luck..
url...is the site which is not pinging from internet.I have also checked the source code for the root IP but still no luck.
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Sep 4, 2012
I am using cisco 1841 LAN router, I need to block MAC address i have applied the command access-list 1102 deny 0000.0000.0000.0000 mac address..... but it does not work.
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Nov 17, 2012
i have standalone 3750 switch. RPS light is green and system light is off.
3750TS#sh env all
FAN is OK
TEMPERATURE is OK
[Code].....
i have another switch with same model and ios its RPS light is off and system light is green
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Nov 17, 2012
I have a 1841 router and I can ping the f/0 port from my pc. However when i try to console to it, it is not showing up anything but a blinking cursor. I tried all different baud rates on my teraterm but still not luck. I picked the baud rate disconnected and reconnected everytime and still nothing. Then I tried to telnet to it using teraterm but it would just open a console window and then close.
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Nov 17, 2012
Yesterday a coleagu accdently removed the CF card from the router now the router does no longer want to boot completely. It extracts the image from the CF card but when it has to initialize the configuration it stucks there for hours. Can it be that the startup config is somehow corrupted?
When i try to tftpdnld is says that the mac address is illegal.
The first line of the cookie looks like 04 ff 08 86 ff ff ff ff ff ff ff ff ff ff ff ff
System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)Technical Support: [URL], Inc.PLD version 0x10GIO ASIC version 0x127c2801 platform with 196608 Kbytes of main
[Code]......
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Aug 13, 2012
i facing problem with my switch cisco 3560G, when it power on only System light is green and noting happen. i check with serial cable ( Console) but noting happen no booting.
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Feb 3, 2012
I have a 6500 that keeps booting into Rommon, even though it has a valid image file on the sup-bootdisk, and the config register is 0x2102. When it reloads I see this on the screen: [code] It seems like the repeating error is "error - on read during ELF program load". I can boot the system off of a CF card, but I'd like to use the sup-bootdisk.
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Apr 7, 2012
Yesterday I've faced a Problem that is not letting me boot with the new IOS.
Actually I'm planning upgrade IOS which supports SSH. As part of plan I've downloaded the new IOS image and uploaded via TFTP server to the switch.
After uploading to the switch. I've verified image and MD5 hash also. Everthing is fine. Then after I set the boot variable for the newly uploaded Image.
When I'm rebooting the Device it is not taking the new IOS. It's booting with the OLD image. Even It's not showing any error message while rebooting (ACTIVITY FILE ATTACHED FOR YOUR REFERENCE) I can't take risk by deleting the old IOS.
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Nov 3, 2012
I tried to upgrade the IOS on my internal AP and now I am in a reboot cycle. I have tried to manually boot the old and new IOS images from the rommon but neither are working. here is the output I am getting:
ap: dir flash:
Directory of flash:/
2 -rwx 6563840 <date> ap801-k9w7-tar.124-21a.JY.tar
4 drwx 256 <date> ap801-k9w7-mx.124-21a.JA1
152 -rwx 548 <date> env_vars
153 -rwx 2775 <date> cpconfig-ap801.cfg
154 -rwx 2775 <date> back_up.txt
155 -rwx 3763 <date> config.txt
[code]....
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Aug 11, 2012
I'm having an issue with 2 of my 3560s which are not booting. The last thing I did on both switches before it hangs was:
>write erase
>reload
restarted as normal
[Code]....
I've tried powering-off the switch and pressing the Mode button and power on. I got to swtch: mode switch:reset
It restarted past the POST but just hang halfway at the same bootp-up process as shown on the attached. The SYST LED is Green color when it hangs.
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Oct 25, 2012
I bought a CISCO SG200-18 switch. I added the Switch to my LAN and started the Switch (as described in the manual). The Switch starts the booting procedure (green blinking status LED) After a while, the LED starts to blink orange and green, instead of steady green.
In generally the Switch seems to work. I can access my whole network, but not the web interface of the switch itself. I also can't see the switch in the ADSL / DHCP rooter.
I also tried to boot the switch only connected to the PC. But ping on 192.198.1.254 is not working. The switch is in the same subnet like my other LAN components.
Subnetzmaske . . . . . . . . . . : 255.255.255.0
Standardgateway . . . . . . . . . : 192.168.1.1
I exchanged the switch. But the new switch shows the same behavior.
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Aug 22, 2012
I have a new cisco 1941 router that I am setting up with pxe-booting. I have never setup pxebooting before and i have this setup so far ip dhcp pool Admin
-option 66 ip 192.168.1.4
-option 67 ascii pxelinux.0
and i can pull an ip but it keeps getting hung up when it comes to the TFTP part.
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Jul 3, 2012
An ASA 5505. Device boots to rommon #0> and stays there. The complete boot record follows:
CISCO SYSTEMS
Embedded BIOS Version 1.0(12)13 08/28/08 15:50:37.45
Low Memory: 632 KB
High Memory: 507 MB
[Code]....
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Aug 17, 2012
I have got a problematic 1841 router. I connected it with console cable and use HyperTerminal application with
BPS: 9600
Data Bits: 8
Parity None
Stop Bits: 1
Flow Control: None
but the displays shows as follows. What may be the problem ? I can't see the English language, what to do now ?
ËŠª¨GÌÍ(W•³•BÜΣ¥õ«©¡«©¡GfGMèF£eˆ)¯+%©§§Mr§j‹ ï(MŽV»øìõ3B…«»v£FÝ=;VOèF£eˆ
)¯+%©)§N N'vnjj»³6r³h-Bãeˆ)¯+%©)'f¾.zN' ~R5ˆîïÝèv®V££õ£ë£'%3Þ££õF£ÈMèF£eˆ)¿+
%/]'fnno/?míHv£îïÝèv®V££õ£Œî£'%3v££õþ
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Mar 3, 2013
I have a brand new 3650x switch that I was configuring via console and left it on overnight; this was friday night ( I forgot to keep the air conditioner on). When I returned Sunday afternoon and checked the switch I realized that the SYS and STAT lights on the front were not on, however the Leds on the PS module were still on. I powered it down and turn it on again but still there are no lights on the front. The PS OK and AC OK leds on the PS module are on but I noticed the leds on the two fan modules are not green or even amber; they are off.When I first turned on the switch I remembered distinctly that there were loud noice and if all fans were in overdrive mode for a few seconds then the went to normal. I'm not gettgin this loud noise phenomenom.
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Oct 24, 2012
i am facing time daely issues on cisco 2960 s series switch while booting .It is taking time for electing masrer and sleeve for stacking.can i disable the election process for stcking while booting.
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Jul 23, 2012
One of the 6500 was going in bootrom mode, so I have formated the flash disk using the other Cisco 6500 switch and copied IOS file to the boot disk. But the 6500 booting failed.
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Feb 16, 2013
I have 2 - WS-C2960-24TT-L switches. Both are experiencing the same issue. Upon booting them up, all lights flash on the mode indicator panel, then it goes directly to a solid green "SYST" light. Nothing registers across the console cable. I have tried different baud rates, cables and computers. None of the ports come up regardless of how long either switch is powered on. Holding the Mode button during boot up produces the same result, nothing. Sounds like they are dead, however, I thought this would be the place to go for ideas. Can I revive these switches?
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Dec 5, 2011
I have a 4507R with a WS-X4515 supervisor V. It was booting into rommon mode, so I attempted to boot to an IOS image from TFTP. The boot process hangs at at the end of the below output and the then the status light blinks orange. I left it sit like this overnight, and it remained the same.
rommon 23 >boot tftp://x.x.x.x/cat4500-entservicesk9-mz.122-53.SG2.bin
Tftp Session details are ....
Filename : /cat4500-entservicesk9-mz.122-53.SG2.bin
[Code]......
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Jul 7, 2012
One of my customer had a problem with A/C and the room temperature reached almost 50 C. We came to the site and saved the configuration, took a backup and shutdown the switch.
After the A/C problem is resolved, we tried to power-on the switch .. and we found that it is going to the rommon.
I put "boot" command to boot from the bootdisk, but I am getting the following error:
Code...
I tried to search it, But it is resulting in that most probably it is a hardware failure on the SUP.
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Jul 17, 2012
I have 2950 switch booting through MOnitor Mode.Analyzed there is no Cisco IOS image in flash.
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Dec 12, 2012
I have a Catalyst 4506e that works fine but if reload, it boots in rommon mode. I can start it with a boot command, but by default, i must type a command. My config-register is 0x2102.
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Feb 28, 2012
I have a cisco 7606-S with dual RSP720-3CXL. Devices reloaded and now none of the RSPs are booting.When I have tried to take the console using only one RSP, card going to rommon mode after that it hangs. I guess its firmware is corrupted.
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