Upgrading Catalyst 9600 Quad-Supervisor StackWise Virtual Setup with ISSU
Pujan from the Enterprise Switching team demonstrates steps to perform an ISSU upgrade on a Catalyst 9600 quad supervisor StackWise Virtual setup.
MAIN POINTS FROM TRANSCRIPT
- ISSU upgrades an image while the network continues to forward packets.
- Verify ISSU support between current and target code, and ensure the switch is in install mode.
- Confirm the switch is booting in install mode and manual boot is disabled using the show boot system command.
TAKEAWAYS
- ISSU is only supported in install mode.
- Ensure the switch is in SSO mode and clean up inactive partitions.
- Verify the current and target iOS versions using the release support matrix.