Cisco Catalyst 9500-24Q StackWise Virtual upgrade from 17.3.3 -> 17.15.5
Hi,
I have been tasked with upgrading a pair of Cisco Catalyst 9500-24Q in StackWise virtual from firmware 17.3.3 to 17.15.5 (recommended release).
I have created a TAC case for what the best upgrade path would be. I'm only getting replies from the Cisco TAC AI bot.
Has anybody done an upgrade like this recently and figured out what the best path would be?
The Cisco AI SH said I could just go to 17.15.5 directly, but that would mean that both of the nodes would reload at the same time, and that means all traffic would be impacted.
Is there a way I can do this upgrade with minimal impact? Everything is set up with the two switches in a redundant way. We could normally lose 1 without having impact.
I have seen the ISSU page, but I hear some different stories about this process.
Does somebody have some real-life experience with this upgrade?
Thanks for all the help and insights.