I'm planning to upgrade from 3.4.0.7 to code 3.4.5.1 . I have 2 controllers acting as a Master and 3 locals that include 2- M3s and one SCII , also I have 6 more controllers Pointing to one of these masters, Im attaching a diagram of what I will be upgrading.
My question here is what do you suggest me to upgrade 1st?
I was thinking to start upgrading the SCII card, then the 1st M3 card and then the 2nd M3 card.
After those I was thinking to upgrade the Master #1 and then Master #2.
Then the last part of the project will update the zone with the small 800/2400s controllers.
As you may see, this will requiere a lot of time to upgrade , reboot , test and confirm anything is working as aspected.
I was thinking if it is possible to upgrade the 2 M3 cards and the SCII card to 3.4.5.1 and stop the upgrade one day just to confirm that anything is working well? If this possible? then I have doubts about upgrading all the other gear to 3.4.51 or maybe it is better to migrate those 3 locals to 5.0.4.6?
could you please suggest me what is the best path to do this, and also what are the main issues that are documented that happen after these upgrade between version 3 and then to version 5?
Besides this when I decide to go to 5.0.4.6 code I will loose my SCII AP license that support 256 and I only will be able to have 128 APs supported. Why does this is limited when going to version 5.x.x.x?
Understand this is a question that needs to cover a lot of topics, but I will appreciate if you can guide me trough this.
Thank you very much.