HP FlexFabric 12900 series Command Reference Manual page 170

The startup software version check function might fail to work because the software versions of the MPUs
are incompatible.
To avoid problems, do not disable startup software version check for the standby MPU unless for software
upgrade.
To make sure the standby MPU always runs the same software images as the active MPU, configure both
the version auto-update enable command and the undo version check ignore command.
Examples
# Enable startup software version check for the standby MPU.
<Sysname> system-view
[Sysname] undo version check ignore
Related commands
version auto-update enable
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