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request system software add restart



Perform a unified in-service software upgrade (unified ISSU) to a more recent version of Junos OS Evolved. A unified ISSU involves minimal disruption of the control plane and data plane traffic. The software is upgraded by using an application-level restart or warm restart instead of a reboot, when possible. Use the request system software validate-restart command before using the request system software add restart command to determine whether you need an application-level restart or a reboot.


You can currently use this command only on QFX5220-32CD switches.



Path and filename of the software package to be installed.

Required Privilege Level


Sample Output

request system software add restart

Release Information

Command introduced in Junos OS Evolved Release 22.1R1.