I have a mainetance winodw coming and I want to upgrade the IOS on a few Cisco 3650, 3750, and 2960 switches, but I am undecided in regard to the version of IOS. Does anybody has experience with the 15.0 version? It is a good idea to jump to 15.0, or I should stick with 12.2 (I was thinking to upgrade to 12.2(55)SE7.
I second Inayath's post.
12.2(55)SE7 is, by far, THE MOST STABLE IOS I've ever had in my network. 15.0(2)SE2 is close second. But here are some gotcha's ...
If you are running 802.1X, stay away from 15.0(2)SE2. Instead, use 12.2(55)SE7. This is very important if you are using 3750 (all series) and/or 3560 (all series).
For 2960 (all series), I have no issues with 15.0(2)SE2 even with PoE and 802.1x. I give this version an "all clear".
Currently, I'm testing 12.2(55)SE8 and 15.0(2)SE4 and it's yet too early for me to give my opinion on both of these versions.