2811 Bootloader problem?

[nialltodd]

Hi. I am trying to upgrade an IOS image on a 2811 router (upgrading from IPBase12.4(3b) to ADVenterprise12.4 (3b and/or 5a)). Irrespective of where I tell the router to 'boot system' from it seems to be trying to tftp the image upon reloading. The boot system command is taken fine. The message I'm getting upon reload is:

%SYS-6-READ_BOOTFILE_FAIL: tftp://255.255.255.255/c2800nm-adventerprise9-mz.124-5a.bin File read failed -- Timed out.

I get 7 of these messages before a final one saying the same but with 'File not accessible' at the end. Finally a message says

%SYS-6-BOOT_MESSAGES: Messages above this line are from the boot loader.

The router then loads it's current IOS and appears to work okay.

Any ideas on this? I've run MD5 checks on both 3b and 5a I'm trying to install and both appear to be fine. Any comments much appreciated.

N.

[spremkumar]

hi

Try no service config in the global config mode and save the config.

Once you are done with saving do a reset and check whether you get the error.

for more info do refer this link ..

http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cr/hcf_r/cfn_06h.htm#wp1035102

regds

[lgijssel · Accepted solution]

Hi spremkumar,

service config is used to load the config file. I do not think that this is the one that's wrong here because he gets an error that's referring to the system image file.

Wasn't there a service network-boot or something like that? It may have been there in older versions.

The guy states that eventually the original config is loaded so I think it is more likely that we have a mistyped boot system command here. Probably referring to tftp: instead of flash:

Regards,

Leo

[lgijssel]

OK, just checked, couldn't find service network-boot nor boot network or something similar in software versions as far back as 12.1.

If they have ever been there, they are now replaced by the boot system command. Most likely is that I was misstaken about any other command besides service config, which can be very annoying indeed.

[spremkumar]

Hi Leo

I agree with your point that it might be something to do with the boot command which is resulting in the error message before getting the box online.

We had some serious problems in the recent past similar to this one and getting errors like..

%Error opening tftp://255.255.255.255/network-confg

%Error opening tftp://255.255.255.255/cisconet.cfg

thts the reason i suggested the user to remove the service config command in the first place..

Thx Leo for pointing me that error :-)

regds

[lgijssel]

Please look at the "service" commands at the top of the config. One of these may cause the attempt to boot from the network, although I do not remember the exact syntax.

Eventually, the router loads the first file in flash if nothing else is specified or if it cannot find the specified file. You can expect this behaviour if you mistyped the reference in the boot system command. Do a "dir or "sh flash" to determine the correct name for the file that you intend to boot. This is also useful to check if the file is present.

If this doesn't help, please post the output of the sh flash command and the line containg your boot system command.

Regards,

Leo

[nialltodd]

Thank you VERY much guys, issue solved. There were indeed some lines in running config telling it to try from tftp first. I've removed all the excess so that only 'boot 5a' is there, and it reloaded into 5a first time.

Thank you, much appreicated. :)