HP MSR Series Command Reference Manual page 189

Hardware
MSR1000
MSR2000
MSR3000
MSR4000
Default
The startup software images on the standby MPU are checked for version inconsistency with the current
software images on the active MPU.
Views
System view
Predefined user roles
network-admin
Usage guidelines
When the standby MPU starts up, this command disables the system to examine the standby MPU's
startup software images for version inconsistency with the active MPU's current software images. The
standby MPU can start up with a different software version than the active MPU.
Even though you can use this command for software upgrade, HP recommends the ISSU method. The
startup software version check function might fail to work if the software versions of the MPUs are
incompatible.
To avoid unexpected problems, do not disable startup software version check for the standby MPU unless
for software upgrade.
To ensure that 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
Command compatibility
No
No
No
Yes
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