When I first had the chance of upgrading the IOS on Cisco switches I was terrified. It’s best to practice these situations in a lab environment to build up confidence, plan, and document the process.
Before upgrading the IOS, verify the version and switch model.
This is a snippet from the show version command:
Switch Ports Model SW Version SW Image ------ ----- ----- ---------- ---------- * 1 52 WS-C3560G-48PS 12.2(25)SEE2 C3560-IPBASE-M
Look into the flash to see the current IOS image file and to verify the amount of free space. Make sure there’s enough space for the new IOS image.
[Read more…] about How to Upgrade the IOS of a Cisco Switch