Cisco WAN :: 1841 Cold Always Boots To ROMmon?

Mar 4, 2012

we have 55 of the 1841 routers here, and one of them always boots to ROMMON from a very cold (down 1 hour or more) start.  The image on all 55 is c1841-ipbasek9-mz.124-24.T4.bin.  32 MB Cisco brand flash.  Here's what's been done thus far:In ROMMON changed to 0x2102.  Then 'reset' and the image boots fine.  Change config-reg to 0x2102.  Save config.  Reload and image boots fine again.  Wait an hour or more and boots to ROMMON.Boot from ROMMON to USBflash0:   Format the CF then copy over the bin file.  Change to 0x2102 and save. Reload and image boots fine again. Wait an hour or more and boots to ROMMON.Swapped CF with another unit.  Again, works fine to reload, but shut down and restart an hour or more later and boots to ROMMON.  Format this CF and copy over image while on router.  Image boots fine.  Wait an hour or more and boots to ROMMON.In each case of very cold start the configuration register has reverted to 0x0 {why it boots to ROMMON}Tried dx mode with 0x8001.  Nothing seen that is unusual to me, but I'm not an expert by any means.It doesn't seem to a CF card problem, but could be a connection to the CF card and then something behind that.
Here is the output of diagnostic boot mode:
Cisco 1841 (revision 7.0) with 116736K/14336K bytes of memory.
Processor board ID FTX1231W0JA
2 FastEthernet interfaces
2 Low-speed serial(sync/async) interfaces
DRAM configuration is 64 bits wide with parity disabled.
191K bytes of NVRAM.


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Cisco WAN :: 887VA-K9 Boots Only To ROMmon?

May 9, 2013

I have an 887VA-K9 which boots into ROMMON mode every time. It seems to have 3 tries at booting, then fails.
The entire console output from power-on is (blank lines removed):
System Bootstrap, Version 12.4(22r)YB5, RELEASE SOFTWARE (fc1)
Technical Support: [URL]
Copyright (c) 2009 by cisco Systems, Inc.


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Cisco Wireless :: AP 1252 Boots Into ROMmon

Jul 17, 2012

I have a lightweight AP that boots into RoMmon, if i hold the reset button in for 10 seconds or so it will boot into the IOS and download the config from the controller but never registers. then once i reboot it it goes back to Romon unless i hold in the button again.

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Cisco Switching/Routing :: 6509 / 720 Sups Random ROMmon Boots

Dec 27, 2012

Got a long lingering, year long issue that has spanned about 8 supervisor cards and a complete chassis swap. The 6509 acts as a ITN in our facility. The active sup card at random points of pipe usage boots into rommon mode, seriously inhibiting our company. I'm able to swap the 2 fiber pairs that we had going into the active supervisor card into the secondary and usually this works for another random amount of time, however, today it occured within minutes of hooking up the fiber links. Sitting there for about 5 minutes it booted into ROMMON. When this happens, I'm able to boot the sup card back to good status. Previous remedial actions, other than replacing sup cards/chassis, was checking the config register and making sure it was x2102. Previously, it was not, and we corrected and reloaded and it took, we thought this would fix the problem, until today.


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Cisco Switching/Routing :: 6509 Redundant Sup720 - Slave Boots Into ROMmon

Oct 24, 2012

I'm fairly new to networking and need to migrate an old core to a new core. I have a 6509-e Switch that I had an RMA on one of my 720 sup cards. After receiving the sup card I swapped my slave out with the new one, expecting it to boot into ios. It booted into Roman. I tried to boot the image manually and it did the same thing. I also tried to boot from my flash and, again, booted into ROMmon.
Question: If i configure and change the boot to boot from image it tells me i need to reset or power cycle first. Will this reset the entire switch? As this is production I'd rather not.
I am at home now, but I can supply any logs/hardware model/configs tomorrow. I thought I would see if this is an easy fix.

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Cisco WAN :: 1841 - How To Do Configuration In ROMmon Mode

Mar 19, 2011

On new 1841 Testing Router, I deleted the flash & did the reload. After reloading, instantly I entered into the Rommon mode. I have a backup of the flash in my TFTP Server, which is connected to the 1841 Router. how can I restore my flash file into my 1841 Router. I can not get myself out of Rommon mode. I also now even can not ping the TFTP Server as well. Do I have to configure in the Rommon mode ?
how to restore the flash image via TFTP Server on my 1841 Router.

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Cisco WAN :: 1841 - Router Automatically Goes To ROMmon Mode

Feb 9, 2012

I have one problem in my Client end router cisco 1841.
Everyday we switch on the router it will automatically goes to ROMMON mode.
So i take remotly and check wheather the IOS is corrupted or not.
So i use the command dir flash: to check IOS is available or not. i found the IOS is there.But it is not boot from IOS.
So i use the coomand boot xxxx.bin to boot from IOS.and finally it booted.
They told to use the coomand confreg in the ROMMON mode.

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Cisco WAN :: RV082 V4.1 Internet Hang Until Cold Restart On Dual WAN?

Dec 22, 2011

I am having issue with a RV082 with firmware:

v4.1.0.02-tm (Sep 16 2011 18:40:48)
On setup 1 I have;Using 2 WAN, 1 from fiber 5mbps symetric fixed public IP and other is DSL private dynamic dhcp address 3mbps/900kbps

 On setup 2 i have:Using 1 WAN, from fiber 5mbps symetric fixed public ip Both router have exact same firewall configuration, subnet and port forwarding and we have the seccont backup DSL coming in a few day for setup 2.on both setup, the RV082 is the main internet gateway/firewall for a set of server...
Setup 1 work perfectly and been online for 2 week (since install) without issue
Setup 2 worked for 2 day then had to reboot, then work for few days then need reboot, now it look like it need to be rebooted every day. the internet just stop working and a simple reboot does the trick... also, when that happen I can stil remote in server that have port forwarded in the router or connect to router management port, but internet on the server is down... I tried opendns and google dns on both WAN connection and still no luck.I have followed instruction on various support forum;

-more reliable dns server
-lower MTU
-failover vs load balance
-disabling SPI and DoS protection
at this point I'm about to swap both router to see if it not a defective hardware or disconnect DSL WAN on setup 1 to see if its more stable but the whole point of installing this router was for Internet redundancy which so far dosent work as expected.

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Cisco Firewall :: 5510 - Multiple ASA Configs For Cold Spare

Oct 2, 2012

I have a few sites all running Cisco ASA 5510s. They all share the same asa (8.4(4)1) and asdm (6.4.9) version, but their configs differ significantly. I have a cold spare sitting in my office in the event we have a physical failure. Is there a quick and simple way I can load up multiple configs and then boot up the cold spare to then run the config from Site_A or Site_B?  Just looking for a quick solution rather than doing a full restore should something fail spectacularly.  Nice to say upon bootup, using confreg perhaps, to boot Site_A config rather than Site_C.

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Cisco WAN :: WS-C3560G-48TS-E / Cold Startup Time For Catalyst Switches?

Apr 23, 2013

My customer uses WS-C3560G-48TS-E switches in air traffic control systems. A requirement for one project is that the entire system be up and running in under five minutes. The WS-C3560G-48TS-E and its replacement - WS-C3560X-48T-E with C3KX-NM-1G - take about four minutes to start up. With other devices added in they exceed their required startup time.They also use WS-C3560V2-48TS-E switches which take about two minutes to start up but they want they GE.
1) Is there way to improve the start up time in the WS-C3560G-48TS-E and WS-C3560X-48T-E switches?
2) Is there another Catalyst switch with similar specifications to WS-C3560G-48TS-E and WS-C3560X-48T-E that has a quicker start up time.

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Cisco :: C2900 False And Delayed SNMP Cold Start Traps

May 31, 2012

I am seeing SNMP coldstart traps that either are delayed by many hours or are false (e.g. right after receiving the coldstart trap a query to sysUptime shows the nodes been up for days).I seen this twice this week in a new network environment for me for two different C2900s running C2900-UNIVERSALK9-M Version 15.0(1)M3 Assuming the coldstart traps are coming from the actual source nodes,   I am curious what could be going on here.
1) One guess I have is possibly the  system clock changed could cause the SNMP agent to send a false cold start trap. Then my guess is in the device log I should see a system time change syslog message.
2) I recall hearing once that syslog and possible traps messages are held in configurable buffer who default value is 1 and if not sent are held and then suffer a delayed sent.  Is it true for both traps and syslog ? In the past I assumed this was simply the logging history buffer  and applicable to syslog traps only.  My assumption in the past was that last trap or last syslog message is sometimes held on reload and sent immediately after restart regardless of device connectivity to the management target.  
I always assumed coldstart traps are never delayed for any reason and that they were pretty accurate substitutes  for system reload syslog messages. Does anyknow know any reason for false or delayed coldstart traps on a C2900  with IOS 15.0(1) ?

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Cisco :: Command For Switches For Multiple Boots

Apr 16, 2012

I'm finding some odd information from Cisco pages and non-Cisco pages also. What is the correct syntax for specifying boot images on a flash:/ of a switch? The differences is if you need the "/" or not as well as after the ";" fo you need to specify flash again.

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Cisco Firewall :: Asa 5510 - Sometimes Boots And LED On Ports Comes On

May 9, 2011

Our cisco asa 5510 getting sometimes boot and sometimes not. sometimes LED on port comes back if boot and sometimes not. what are the parameter should be check to rectify problem.

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Internet Drops When Desktop Boots?

May 26, 2011

Internet connection fails when desktop boots?I have a wireless internet router/modem. Netgear.The internet works fine via wireless for laptops, phones etc.Until i boot my desktop up that is connected via cable to the router it then drops the internet connection.The network is still showing as active but local only.If i open a browser it tells me that it cannot resolve the DNS server.if i switch the desktop off and reconnect the laptop it works.So its not the laptop or the router i have used a few different cables all the same.I'm using XP on desktop fairly fresh install with AVG antivirus and not much else on it but i have had the internet working since install so its some setting somewhere thats changed or needs setting up again.

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Cisco Switches :: Sge2010p Software Upgrade Switch Always Boots

Aug 6, 2011

I have just downloaded new software for sge2010p. I had tried to made an upgrade on some switches, but switches still boot with the old software.I have installed software and boot I have downloaded software 3.0.1 from cisco, put it on tftp and started an upgrade via switch web interface.  I have checked that the active image is set to 1, and started the upgrade.Switch has downloaded soft from tftp, and reported that process has been finished without errors.After the restart switch have software again.  I have try to do this same on 4 different switches working in L3 and L2 mode - always with the same effect.Should I upgrade  both images in the same time to get this work?

 I have noticed, that the new firmware is located on image 2.

# show bootvar
Image  Filename   Version     Date                    Status
-----  ---------  ---------   ---------------------   -----------
1      image-1    08-Nov-2009  16:21:37   Active
2      image-2     19-May-2011  13:05:53   Not active*
[Code] ...
So I try to set active image via console command:
# boot system image-2
and again...
a# show bootvar
Image  Filename   Version     Date                    Status
-----  ---------  ---------   ---------------------   -----------
1      image-1    08-Nov-2009  16:21:37   Active*
2      image-2     19-May-2011  13:05:53   Not active

"*" designates that the image was selected for the next boot
Finally i have tried to set the active image to "2" using console menu: I have set it like this:
                                 Active Image
Unit ID                 Active Image            Active Image after Reset
=======                 ============            ========================
1                       Image 1                 Image 2
and save..

Where is the right place to set active image for 2. Is the "active image" settings only sets the firmware image which switch uses  or configuration files too?

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Cisco Switching/Routing :: 3500XL Switch - Does Not Load Flash Or Boots

Dec 8, 2011

Base ethernet MAC Address: 00:0a:b7:07:35:80Xmodem file system is available. The system has been interrupted prior to initializing theflash filesystem.  The following commands will initialize the flash filesystem, and finish loading the operating system software:  

flash_init    load_helper    boot switch: flash_initInitializing Flash...flashfs[0]: 3 files, 1 directoriesflashfs[0]: 0 orphaned files, 0 orphaned directoriesflashfs[0]: Total bytes: 3612672flashfs[0]: Bytes used: 1815040flashfs[0]: Bytes available: 1797632flashfs[0]: flashfs fsck took 3 seconds....done Initializing Flash.Boot Sector Filesystem (bs:) installed, fsid: 3Parameter Block Filesystem (pb:) installed, fsid: 4ô

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Cisco Switching/Routing :: 5548 - Restore IOS When Switch Boots Into Loader?

Apr 3, 2013

I was in the process of recovering a password on a nexus 5548 swith when it finally gets in to the boot mode.I think i lost all my bootloader code.How do i get it back on the switch
loader> load n5000-uk9.5.0.3.N2.1.bin
Error 27: Unrecognized command
how to restore my IOS on this device

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Cisco Switching/Routing :: Router Boots Into Router With 2500 Series

Jul 27, 2009

I m having 2500 series router. when i boot router automatically get into router(boot)> . how to solve?

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Cisco :: Recovering From ROMMON On ASA?

Jun 11, 2012

I cleared the flash (disk0) on my ASA and now I'm unable to restore it with an IOS.

When I attempt to load it with an IOS, it appears to load just fine. It even proceeds to restart, but when it boots back up it displays the error "No images in / Error 15: File not found. unable to boot an image" and goes to ROMMON.

My computer's IP is I'm assigning the ASA The image filename is asa724-k8.bin. Here's the output of the environmental variables and the attempted loading of the IOS:

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Cisco :: Restoring 3550 From ROMmon?

Jan 13, 2011

I have a 3550 I can boot into rommon, when I type flash_init the switch freezes and shows a weird ASCII character?

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Cisco :: Rommon Is Not Working On C1841

Nov 3, 2011

I'm having problem on my 1841 it won't boot. No response on console but the led lights seems to be normal.I tried removing the CF then turn it on again to see if the router will go to rommon but didn't happen. I did try using another pc thinking the com1 is faulty but still no response on console nor rommon not showing up.

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Cisco WAN :: ASR 1004 Cannot TFTP From ROMmon

Oct 25, 2010

ASR 1004, has a image, which is on  the harddrive, not bootflash and we have no boot commands in the  configuration…We are running the ROMMON version  ‘15_01rs’ The ASR boots into Rommon, as it  cannot find a image (as expected), as the configuration has no boot commands.Trying to TFTP or getting an IOS  back into bootflash is proving problematic.Follow all TFTP  commands..
rommon 1 >  IP_ADDRESS=
rommon 2 >  IP_SUBNET_MASK=
rommon 3 >  DEFAULT_GATEWAY=
rommon 4 >  TFTP_SERVER=
rommon 5 >  TFTP_FILE=asr1000rp1-adventerprisek9.03.01.01.S.150-1.S1.bin


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Cisco WAN :: Can't Get 2500 Router To Go To ROMmon

Feb 16, 2012

I'm having a little trouble with a router I have got my hands on to practice for my CCNA.Im connected via serial>USB adapter and via XP HT on Win7. Router boots and I then break the boot sequence with ctrl-break. But then it does not go into ROMMON mode. It simply says this:

-System Bootstrap, Version 5.2(8a), RELEASE SOFTWARE
-Copyright (c) 1986-1995 by cisco Systems
-2500 processor with 2048 Kbytes of main memory
How I get it into ROMMON to reset the password on it.

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Cisco WAN :: How To Replace ROMmon On 2620

Jun 23, 2012

I think that my rommon image has become corrupt as it will not take a new IOS image. I have tried several images that are within the recommended size and work with another 2620 with exactly the same specification also some commands that are available are not recognised when typed

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Cisco WAN :: 871 - Cannot Access USBFlash0 In ROMmon

Nov 22, 2011

This question is about a Cisco 871, which has no bootable image in flash.The device is currently in rommon, and i am attempting to copy the correct .bin file over from usbflash0: but recieve the following error:unable to stat usbflash0:/: permission denied ?i get the same error if i try to boot from usb, or even try to view the directory.Config register is currently set to 0x2102? Typically in this scenario, i just boot from usb, and copy everything over in enable mode, but the lack of permission on this particular router has me stumped.

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Cisco WAN :: ASR 1002 IOS And ROMmon Upgrade

Jan 10, 2011

I'm trying to upgrade the ASR 1002 we just purchased and am having some issues (this is a new device and is not in service).  I first tried upgrading the ROMMON using the upgrade rom-monitor filename bootflash:asr1000-rommon.150-1r.S.pkg all command, but the upgrade didn't seem to work completely.  When I do a sh platform I get the below output showing 15.0(1r)S: [code]
no valid BOOT image foundFinal autoboot attempt from default boot device...Rommon upgrade requestedMaximum upgrade attempts exceeded, continuing with old Rommon...
I've also tried upgrading the IOS, but that is not working either.  I tried "boot system flash:asr1000rp1-advipservicesk9.03.02.00.S.151-1.S.bin" command, but that did not work.  I made sure the image was good using the "verify" command and made sure to set "config-register 0x2102".  After I do a wr me and reload the router I get the below errors. [code]

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Cisco WAN :: AS2511 Stuck In ROMmon?

Oct 1, 2011

Im trying to upgrade my IOS. It wasnt at ROMMON before but I thought I can upload the IOS on the xmodem so i did a

conf t
config 0x0
reset / reload
Now that I am in the ROMMON. If i type CONFREG to change the BAUD,  nothing shows up. Usually it gives options but this time, nothing.

So I tried to go back to the normal CLI

I turned on the router manually and turn it back on hoping that it will work but it brought me back to rommon.

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Cisco WAN :: 2610XM Router To Get Into ROMmon

Dec 21, 2012

Im trying to get into Rommon, Im reading thats the BREAK button, which im assuming obviously its the pause/break button on my keyboard, im pressing it till my finger turns blue a billion times and still no rommon noodles for me.

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Cisco WAN :: ASA5505 When Starts It Loads Into Rommon

Apr 24, 2012

When my ASA5505 starts it loads into rommon. I enter "boot" and everything boots fine. How do I make that load by default whenever it starts. Any correct command syntax to make that happen ?

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Cisco :: Ap1231g-e-k9 - Load New Bin Ios In Rommon Mode?

Jun 9, 2011

loading a new bin file onto a Cisco wirless access point ,the access point i have found is only in rommon stage

Access point model is  : ap1231g-e-k9.

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Cisco WAN :: 1751 Router Stuck In ROMmon?

Nov 24, 2012

I do not have a cross over cable and have to use xmodem. I set the baud rate to 115200 and I can see everything fine. Using Tera Term when you send the file via xmodem it freezes and closes on packet #3 or about 384 bits. When simply clicking the send file button you get the error- 

*** Reserved LVL 7 Interrupt ***
PC = 0xfff0bc98, Vector = 0x500, SP = 0x80004c4c
Not sure what to do from here. I have tried everything.Error you get when you boot the router:

System Bootstrap, Version 12.2(1r)XE1, RELEASE SOFTWARE (fc1)
TAC Support: [URL]
Copyright (c) 2001 by cisco Systems, Inc.
C1700 platform with 32768 Kbytes of main memory
 loadprog: bad file magic number:      0x0
boot: cannot load "flash:"

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Cisco Switching/Routing :: Cat 6506 Goes Into ROMmon

Nov 29, 2012

I have a Cat6506.  There were 2 Sup 720 in it for redundancy.  They told me they had problems with this thing in the past needing to go out and reboot the machine.  I need to go out periodically because it goes into ROMMON.  I type boot and it comes back up.  One time though neither one would reboot.  I had to take a third one out there and reconfigure it.  Now it is starting to do the same thing.  One thing I did notice is they never connected it to an UPS.  It is plugged strait into the wall with power going to two outlets.  I am beginning to think there are spikes in the power occurring and this is sending it into ROMMON. 

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Cisco WAN :: 2600XM Failing With Booting / End Up Being In ROMmon

Feb 4, 2012

I have recently bought a used 2600XM, I was trying to boot it, I get some errors and end up being the ROMMON mode:

ystem Bootstrap, Version 12.2(8r) [cmong 8r], RELEASE SOFTWARE (fc1)
Copyright (c) 2003 by cisco Systems, Inc.
C2600 platform with 262144 Kbytes of main memory
 getdirent: bad file magic number, possibly out of sync
boot: cannot determine first file name on device "flash:"


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