Hi , i whant to upgrade ios version .
I have new ios image on a tftp server , i know the upgrade procedures but there is a problem with my flash. Not enough space on it , also after trying to copy the new image from tftp server it is not asking me if i want to remove the old one. Some suggestions about solving this ? Also if i succeed i want a backup solution if the new flash doesn't boot properly. Thanks in advance.
Here the info needed :
Cisco router 1811
old IOS ver : Version 12.4(2)T1
new IOS ver : Version 12.4(9)T1
I'have an idea how i can backup the router if the new ios image doesn't boot properly. I will boot from tftp server new ios image , after i set this boot parameters the router will search new image file on the tftp server. So if the booting of new ios image fail i will just change the name of the file of old ios image on the tftp server with the name the router is searching so it can boot the old ios image , beacause we know it is ok.
Is this a good idea for backup ? :)
Thanks in advance