I have Cisco 2610 and it has version 12.0.
I want to upgrade to 12.3
The DRAM is 32MB and Flash is 2 slots of 8MB and 8MB.
Which IOS to get that fits in 8MB with 12.3?
Network Engineering Stack Exchange is a question and answer site for network engineers. It only takes a minute to sign up.Sign up to join this community
If you can't find 12.3 image that fits in the 8MB flash partition, you'll need to repartition the flash with
no partition flash in the configuration mode. Then format it as one big partition, which should give you 16MB of space, and finally put some 12.3 IOS image on it which should then work fine.
Ah, and BTW, the IOSes tend to reserve some space, and if you're fighting with pushing every available bit to use, erase the flash in this manner:
erase /no-squeeze-reserve-space flash:
A more generic answer first: Check which downloads are available for your device.
On http://software.cisco.com/download/navigator.html you can search for your device and see which downloads are available and how much Flash/RAM they need.
You don't need a login or special access rights to access these pages. And yes the web site is sometimes confusing.
I just did for the 2610 and 12.3 is only listed under "Deferred Releases".