Copy IOS image using FTP, not TFTP, on 2500 series
Can it be done?
Trying to upgrade on my ol' 2501's to 12.3 turned into such a disaster; I had TFTP checksum errors ad nauseum, and many other probs.
A forum member told me the TFTP client in IOS (or bootstrap? it can't be in IOS if it's copying the images and erasing the Flash where the IOS actually resides, can it?) is actually rather weak; and that I should use FTP instead.
Well, I've got 3C Daemon FTP server installed on my laptop, but what I can't find is info on how you actually get the transfer going, using FTP.
Re: Copy IOS image using FTP, not TFTP, on 2500 series
The 2500s are run-from-flash devices. This means that the active image runs out of flash, and thus a 2500 cannot be typically upgraded while online. Instead, you reboot the device into boot helper mode (i.e. you run another, stripped down IOS image). The boot images do not support FTP transfers. Your only choices are TFTP or RCP (see http://www.cisco.com/en/US/products/hw/iad/ps497/products_tech_note09186a0080110d2c.shtml ). TFTP should be fine provided you have a good network connection. The weakness in our TFTP client mainly stems from lack of large file support, but 2500 images should be under 32 MB, so this is not a problem.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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