IOS upgradiation

Unanswered Question
Sep 23rd, 2008


I am planning to upgrade the IOS in 2950.. I need some documents if my switch is got stuck up in rom mode..

How to upload the IOS in 2950 trgh to hypertem(Xmodem).


sateesh kumar.k

I have this problem too.
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John Blakley Tue, 09/23/2008 - 09:08

If you can get into the console now, I would HIGHLY recommend putting an address on it for management, and then transfer the image via tftp. Xmodem is painfully slow.


Mark Yeates Tue, 09/23/2008 - 10:17


Here is a set of instructions I wrote a while back. There is a way to speed up the transfer time using xmodem. It will take minutes instead of hours.

How to Speed Up Xmodem Recovery

When a user tries to recover the switch from a corrupted or missing IOS,

the copy xmodem: flash:[IOS filename] command might not be displayed under the switch: prompt.

The copy command might be displayed under the switch: prompt, but not the copy xmodem: command.

Complete these steps in order to speed up the Xmodem recovery:

Set the baud rate to 115200 on the switch: prompt.

switch: set BAUD 115200

!--- The screen goes blank after you enter this command.

Restart HyperTerminal.

Under COM PORT properties, select the bits per second as 115200. The switch: prompt is displayed.

Start the Xmodem recovery.

After the Xmodem recovery, set the BAUD rate back to 9600. If the set BAUD 9600 command does not bring the baud rate to 9600, issue the unset BAUD command in order to bring the baud rate to a default value of 9600 bps.



sateeshk10 Tue, 09/23/2008 - 13:23

Thanks for your immediate response..

I dont have a enough capcity to puload hte IOS.

Directory of flash:/

2 -rwx 109 Feb 28 1993 18:01:46 -06:00 info

4 -rwx 548 Dec 31 1969 18:01:33 -06:00 env_vars

5 -rwx 25 Sep 02 2008 21:54:05 -05:00 private-config.text

6 -rwx 676 Feb 28 1993 18:02:50 -06:00 vlan.dat

7 -rwx 3097872 Feb 28 1993 18:03:37 -06:00 c2950-i6q4l2-mz.121-22.EA4.bin

8 drwx 4032 Feb 28 1993 18:04:15 -06:00 html

362 -rwx 109 Feb 28 1993 18:04:48 -06:00 info.ver

363 -rwx 1048 Sep 02 2008 21:54:05 -05:00 multiple-fs

364 -rwx 9625 Sep 02 2008 21:54:05 -05:00 config.text

7741440 bytes total (3068416 bytes free)

New IOS size is around 3059kb..But as per the above, avail capacity is 3068..can i upload the IOS???

I need to remove from above flash ..pls let me know anything which i can remove..

planning to HTML is it ok..or any thing which i need delete and make free space..



John Blakley Tue, 09/23/2008 - 13:31

I would make a backup of your current .bin file, and then delete it from flash. Then upload the new one, and reboot the switch.


Mark Yeates Tue, 09/23/2008 - 13:33


It would be cutting it close but there are a few unnecessary files in flash and might be able to get new IOS on there. Also you could delete the existing IOS and then TFTP the new one which is a little risky.

I believe these are the web GUI files and if you are not using these you can remove them.






sateeshk10 Tue, 09/23/2008 - 13:48

thanks for info..i am not using GUI so i can remove right??


sateesh kumar.k

sateeshk10 Wed, 10/01/2008 - 08:45


How to delete HTML folder in flash...

triedto delete flash:html..Not happening as it is directary..pls suggest..



sateeshk10 Wed, 10/01/2008 - 09:49


While i am trying to give the boot system command..its taking but i am not able to give boot system files as i have two IOS images in my switch. if one IOS got failes it should boot with second IOS for the same i have tried to achive trgh boot command but its overwriting menas taking one boot system only..

pls help me out




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