Hi,
I'm currently in the process of upgrading our 2920's from WB.15.12.0015 to WB.15.17.0007 and I'm having quite some issues with the 3+ switches stacks.
I'm using IMC 7.0 to deploy the firmware and it has worked just find for standalone switches as well as a 2 switch stacks.
I'm not upgrading my second 3 switches stack and while I thought the first time was some sort of glitch, I encountered the same behavior now.
From my understanding, the master should upgrade and then the rest of the stack should upgrade one switch by one.
The behavior I see is;
Deploy software via IMC - Member 3 upgrades - Member 3 is kicked out of the stack - Upgrade stops
Now I can push the software again so that;
Member 2 upgrades - Member 2 is kicked out of the stack - Upgrade stops
Now I can push the software again so that;
Member 1 upgrades - it reboots - after a few minutes the stacks is operationnal again.
Is that normal? I got a burned a bit on the second stack I upgraded since my uplinks are on member 2 and 3 - I expected the Master to be upgrade last since it was the case on the first stack I upgraded but in my case (master was member 2), it really seems to upgrade from last member to first.
I'd like to be able to upgrade my stacks with a bit more confidence and without having to push the software 3 times.
Thanks to anyone who could shed some light on the process !
#stack#upgrade#2920#imc