Transfer image from PC to Switch

[muzzia321]

I am working with a Catalyst 2950 switch, and somehow there is nothing on in the Flash memory for it to boot from. I downloaded the image onto my computer, but now i have no idea how to get it from the PC to the switch, without having the switch booted up. Help please?

[archari]

Are you able to get into rommon?

You should be able to use the tftpdnld command to go from there on.

http://www.ciscosystems.com/en/US/products/hw/routers/ps259/products_tech_note09186a008015bf9e.shtml

Its for a 2600 router but should be similar for the 2950 as well.

If you do hit a problem post here.

HTH

[muzzia321]

Well, I'm on a 2950 Switch, so everytime I type in one letter, it goes to the next line, and I cant even type a command. I can't get into rommon, but I can get into just "rom" and that's where it types one letter then goes to the next line.

[archari]

You have a console port speed mismatch

Make sure you are resetting your terminal emulation software to match the default baudrate i.e. 9600.

If this is a new switch that you are not sure what the baud rate might be, you will have to try some combinations (from 9600 to 1152000) to get the correct output.

[muzzia321]

It's on 9600 and when it starts, it doesn't boot up, it goes to a thing where it says "switch:" and you can type in commands, but not normal commands. And I can read everything it says. I can't get an actual rommon, but i can type in "trap" and it comes up saying "rom" and thats when I get what was previously stated

[archari]

Someone might have changed the rommon setting and inadvertently changed the baud rate while typing in the wrong confreg value.

You can try more values (higher than 9600) and see if it comes up properly.

Unfortunately I dont think this switch comes with an aux port (do you see one?) or you could try plugging it in the aux and try bringing it up.

If this is a non functional console port and you are positive the baud is correct, Id raise a tac to have an RMA executed.

[glen.grant]

There is no aux port on a 2950. Follow these instructions and that should get you going.

http://www.cisco.com/en/US/products/hw/switches/ps628/products_tech_note09186a0080169696.shtml

[ropethic · Accepted solution]

you will probably have to x-modem the image

here are the procedures

http://www.cisco.com/en/US/products/hw/switches/ps628/products_tech_note09186a0080169696.shtml#topic2

[loretomarquez]

I had the same problem today, and luckily I found this conversation, you have help me a lot. My switch is alive again.

Thanks a lot.

[muzzia321]

Thanks for all your help guys. It loaded and everything. My switch is alive!!

[Aijaz Rehman]

well its not a rocket science but we need someone to explain it  step by step, let's go ahead 

Use Tera Term, to transfer flash image via Xmodem to cisco switch, download Tera Term its free

Power on your switch while pressing the mode button you will get the ROMMON prompt (switch:)

setup the transfer speed at its high to transfer fast

switch: set BAUD 115200

Open  tera term terminal and go to:

set up > serial port… > then change the baud rate to 115200 there as well

Give the switch a minute  take into effect, don’t panic when you feel like the screen froze, that happens, if you feel you don't get prompt even after press mode button change this back to 9600 you will get prompt back.

then type:

switch: flash_init      

switch: copy xmodem: flash:<the image file>

the image file name means the file that you kept on  desktop or any folder just copy and pate the name followed by .bin extension

when you hit enter after this command you will see CCCs displayed, then on tera term menu click File > XMODEM > send

browser the file on your desktop or the folder you kept  .bin file, That’s it! Here the transfer will begin

To verify if .bin files were copied you can type:

switch: dir flash:   and the .bin file should be there.

Depending on the link’s speed it may take up to 40minutes. Once everything is done. Do not forget to set the Baud rate back to 9200:

switch: set BAUD 9600

You are almost there, last thing you need to do is type:

switch: boot flash:<.bin file name>