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on-disk-failure (Chassis Redundancy Failover)


Hierarchy Level


Instruct the backup router to take primary role if it detects hard disk errors on the primary Routing Engine.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.


The on-disk-failure statement at the [edit chassis redundancy] hierarchy is not supported on PTX platforms running Junos Evolved. These platforms default to a switchover when disk failure is detected.

Release Information

Statement introduced before Junos OS Release 7.4.