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Problems with IOS upgrade 3750

ramesys12
Level 1
Level 1

Scenario: Te customer has two 3750 switches and for further redundancy + speed they decided to use the stackwise tech.

I was asked to install the stack wise cables so waht I did was

port 1 on Switch1 > port 2 on Swtich2

port 2 on Switch1 > port 1 on Switch2

restarted both switches to configure them from scratch i.e. cluster + ip and etc switch 2 was in a hung state so decided to upgrade the IOS on switch 2 as it did not match switch 1.

I got my hands on a tar file for this switch and like a idiot "copy tftp flash" the tar to the flash instead of following the follwoing command :

http://www.cisco.com/en/US/products/hw/switches/ps5023/products_configuration_example09186a00804799d7.shtml

***************************************

archive download-sw /leave-old-sw tftp://11.11.11.11/c3750-i5-tar.122-20.SE.tar

***************************************

The old IOS was erased by me and here I am stcuk with the 3750 on the promt where it sasy

switch:

I can barely run any commands on this mode.

What I need to do is install/ extract the tar file as it comes up with a message saying no boot file system found etc...

Can anyone pelase advise.

Now I will need to two things from any expert

1) How to fix this IOS issue I caused which is embarassing

2) Did I patch the stackwise cables correctly ?

please respond any help will be greatly aprpeciated.

cheers

AJ

22 Replies 22

The server is a Windows 2003 server SP1 it is plugged into. sadly which is not on the list.

:( I am feelign so sad now.

what have I done.

AJ

Try all the combinations, one should work.

You can also try downloading SecureCRT (fully functional for 30 days) and try with CRTL+BREAK.

It works here from my WindowsXP machine

http://www.vandyke.com/download/securecrt/index.html

3750 only support XMODEM, nor TFTP.

See this page.

Recovering from a Software Failure - Catalyst 3750 Switch Software Configuration Guide, 12.2(25)SEE

http://www.cisco.com/en/US/customer/products/hw/switches/ps5023/products_configuration_guide_chapter09186a00805a650d.html#wp1099467

I recovered a 3750 once, xmodem download cost 2 hours, and the size of IOS is 4M.

That is absolutely correct that worked thank you som uch :)

what a releif. :)

cheers

AJ

Sadly it did work and it did not

this is what happened

the mode button came up witht he screen you would expect it to come up with than the out put below

The system has been interrupted prior to initializing the

flash filesystem. The following commands will initialize

the flash filesystem, and finish loading the operating

system software:

flash_init

load_helper

boot

switch: ?

? -- Present list of available commands

boot -- Load and boot an executable image

cat -- Concatenate (type) file(s)

copy -- Copy a file

delete -- Delete file(s)

dir -- List files in directories

flash_init -- Initialize flash filesystem(s)

format -- Format a filesystem

fsck -- Check filesystem consistency

help -- Present list of available commands

load_helper -- Load and initialize a helper image

memory -- Present memory heap utilization information

mkdir -- Create dir(s)

more -- Concatenate (display) file(s)

rename -- Rename a file

reset -- Reset the system

rmdir -- Delete empty dir(s)

set -- Set or display environment variables

set_bs -- Set attributes on a boot sector filesystem

set_param -- Set system parameters in flash

sleep -- Pause (sleep) for a specified number of seconds

-- MORE --

trap -- Cause a software breakpoint to occur

type -- Concatenate (type) file(s)

unset -- Unset one or more environment variables

version -- Display boot loader version

switch: dir flash:

unable to stat flash:/: invalid argument

switch: dir

List of filesystems currently registered:

flash[0]: (read-write)

xmodem[1]: (read-only)

null[2]: (read-write)

switch:

the old flash file i.e. the tar file is no longer in the flash and I cannot run that command dir flash: which I could do earlier

Now the prompt seems to be the same prompt with a different message compared to earlier.

so I am back to square one.

cheers

AJ.

i think you restarted the switch while pressing the mode button. this will always take the switch to the recovery mode.

as i had said earlier try using the flash_init to initailize the file as indicated in the beginning of the output.

Let me know how it goes

Narayan

don't try to dir the image, even if you can do it.

where 3750 stop at 'Switch:',just use

'flash_init', then

'load_helper', and

'copy xmodem: flash:image_filename.bin'

After the Xmodem request appears, use the appropriate command on the terminal-emulation software to start the transfer and to copy the software image into flash memory.

On Windows XP, use Hyper-Terminal

Transfer -- Send File

You can find the .bin image file in .tar

Hello There,

I could guess that u perform the following N.14 step described in the Recovery Procedure Document:

"Step 14 Delete the flash:image_filename.bin file from the switch."

Did u delete all the files? or delete the .tar file? only, i could guess that u must repeat the procedement, with the except of the 14th step.

On the 1st time u did it, it still working till the reload?

Did u perform the "flash_init", before the "dir flash" command ? It will not be recognizable before that command.

Hope that resolve it

Best Regards

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