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Community Member

Problems with IOS upgrade 3750

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
Hall of Fame Super Bronze

Re: Problems with IOS upgrade 3750

Responding your first question:

You can transfer a new IOS to this switch by using XMODEM or TFTPdnld

Please check these links for either method.

http://www.cisco.com/en/US/products/hw/routers/ps221/products_configuration_guide_chapter09186a008007cd0e.html

http://www.cisco.com/warp/public/130/xmodem_generic.html

Your second question:

The cables are connected correctly.

Please rate helpful posts.

Thanks

Community Member

Re: Problems with IOS upgrade 3750

EdisonOrtiz,

Thnak you for responding it is indeed kind of you.

Let me elaborate a little more on this.

The problem is I dont even get into the rommon mode to use the links above..

All I get with a prompt which the rotuer is switched on is

---------------

switch:

----------------

I surely tried the xmodem command in that mode and it seems to not work.

So is there a way I can change the "configure register" from the prompt I am in currently I dont even know what that prompt is called to be honest??

Am I being blind or am I looking for spoon feeding which is neither the case trust me...

I think I am under a lot of pressure to get that switch working as all the servers redundant cables were plugged into that switch.

Any help will be greatly apprecaited.

cheers

AJ

Hall of Fame Super Bronze

Re: Problems with IOS upgrade 3750

If you type

?

What commands are available to you ?

Community Member

Re: Problems with IOS upgrade 3750

If memory serves me right

" ? "

does not work in that mode

neither does help

all I get is

switch:

Community Member

Re: Problems with IOS upgrade 3750

let me add further to this

I think I did run the command

dir flash:

and it list the .tar file only in the flash whcih is clear the result of my wrong doing.

The switch is not with me as it is onsite but I wsih I could have connected to it right now and given you the output whcih I can do tommorow if it helps.

cheers

AJ

Hall of Fame Super Bronze

Re: Problems with IOS upgrade 3750

You need the .bin file as well. That's your IOS image.

EDIT: I see you went with the archive approach, nothing wrong with that but I usually download the BIN and go with the copy tftp flash :)

Community Member

Re: Problems with IOS upgrade 3750

I completely agree should have done that but the customer was a novice to cisco switches and required a funky web int so I decided to go down that route and in haste messed the whole thing up :(

I agree the commanf you have suggested but I think you will need that output when the switch starts which will enable any of the experts to help me..

So I will get back to you tommorow once I have access to the switch once again.

cheers

AJ

Community Member

Re: Problems with IOS upgrade 3750

As promised.

switch:

Base ethernet MAC Address: 00:18:19:60:81:00

Xmodem file system is available.

The password-recovery mechanism is enabled.

Initializing Flash..

*** some text missing *****

flashfs[0]: 0 orphaned files, 0 orphaned directories

flashfs[0]: Total bytes: 15998976

flashfs[0]: Bytes used: 7837184

flashfs[0]: Bytes available: 8161792

flashfs[0]: flashfs fsck took 9 seconds.

...done Initializing Flash.

Boot Sector Filesystem (bs) installed, fsid: 3

done.

Loading "flash:c3750-ipbase-mz.122-25.SEB4/c3750-ipbase-mz.122-25.SEB4.bin"...fl

ash:c3750-ipbase-mz.122-25.SEB4/c3750-ipbase-mz.122-25.SEB4.bin: no such file or

directory

Error loading "flash:c3750-ipbase-mz.122-25.SEB4/c3750-ipbase-mz.122-25.SEB4.bin

"

Interrupt within 5 seconds to abort boot process.

Boot process failed...

The system is unable to boot automatically. The BOOT

environment variable needs to be set to a bootable

image.

switch:

switch: dir flah:

unable to stat flah:/: no such device

switch: dir flash:

Directory of flash:/

2 -rwx 7834112 c3750-ipbasek9-tar.122-25.SEB.tar

3 -rwx 1493 config.text

4 -rwx 5 private-config.text

8161792 bytes available (7837184 bytes used)

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

trap -- Cause a software breakpoint to occur

type -- Concatenate (type) file(s)

unset -- Unset one or more environment variables

version -- Display boot loader version

Community Member

Re: Problems with IOS upgrade 3750

As mentioned earlier I dont even see the XMODEM command listed under the help.

can I not extract that tar file which is already in the flash?

or simply erase it and than reboot the switch?

than I might get a different prompt?

Please advise.

cheers

AJ

Hall of Fame Super Bronze

Re: Problems with IOS upgrade 3750

AJ,

Reboot the device and perform the CRTL+BREAK sequence to get into ROM Mode and then follow the steps from this URL (XModem or TFTPDLND).

http://www.cisco.com/en/US/products/hw/routers/ps221/products_configuration_guide_chapter09186a008007cd0e.html

Make sure to download a .bin file instead of a .tar and also delete the .tar in order to create more space in the flash.

Good luck.

Re: Problems with IOS upgrade 3750

Hi graeme,

Try the following commands and check

switch: flash_init

switch: load_helper

switch: boot

HTH

Narayan

Hall of Fame Super Bronze

Re: Problems with IOS upgrade 3750

Narayan,

He doesn't have a valid image to boot from ...

Community Member

Re: Problems with IOS upgrade 3750

Thank you both for responding to the post much appreciated.

I have tried the break sequence .i.e ctrl < break >

it refuses to work

all I get is this

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

switch: < AJ : powered off >

Base ethernet MAC Address: 00:18:19:60:81:00

Xmodem file system is available.

The password-recovery mechanism is enabled.

Initializing Flash...

flashfs[0]: 0 files, 1 directories

flashfs[0]: 0 orphaned files, 0 orphaned directories

flashfs[0]: Total bytes: 15998976

flashfs[0]: Bytes used: 1024

flashfs[0]: Bytes available: 15997952

flashfs[0]: flashfs fsck took 8 seconds.

...done Initializing Flash.

Boot Sector Filesystem (bs) installed, fsid: 3

done.

Loading "flash:c3750-ipbase-mz.122-25.SEB4/c3750-ipbase-mz.122-25.SEB4.bin"...fl

ash:c3750-ipbase-mz.122-25.SEB4/c3750-ipbase-mz.122-25.SEB4.bin: no such file or

directory

Error loading "flash:c3750-ipbase-mz.122-25.SEB4/c3750-ipbase-mz.122-25.SEB4.bin

"

Interrupt within 5 seconds to abort boot process.

The system is unable to boot automatically. The BOOT

environment variable needs to be set to a bootable

image.

switch: ?

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

If there is a another alternative please advise as the engineer onsite has just left for the day as well and that means I will have to wait until tommrow if he can again power cycle it for me.

Thank you once again so much for this help.

cheers

AJ

Hall of Fame Super Bronze

Re: Problems with IOS upgrade 3750

The sequence may vary depending upon the workstation you are running.

Read this link for various ways of ctrl break

http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080174a34.shtml

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