Normally on 25XX routers, the IOS code runs directly out of flash and so, the IOS is stored uncompressed on the flash. However if you compress the image (with a *.Z name) and store it on the flash, then the later versions of the boot rom will first expand it into RAM and then run the IOS code from RAM instead of flash. In this case, of course, you have less available RAM than otherwise. But if the compressed image itself is more than 4MB, then you are out of luck and must upgrade the flash. Nelluri "[EMAIL PROTECTED]" wrote: > > Thank you,buddy.But ther's still another question:since i have only 4MB > flash on my cisco 2503,and although you compress that IOS12.0 image,it's > still much larger than 4MB,so,wher should i put the compressed > file/image?on a TFTP server? > any advance will be appreciated,thank you. > > henry > 2001-05-08 20:06 > > > f6d;6d::o > f > io< Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=4483&t=3730 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]