Although nonstop-routing is also a valid keyword at the logical-systems hierarchy level, it is not supported.
Statement introduced in Junos OS Release 8.4.
For routing platforms with two Routing Engines, configure a primary Routing Engine to switch over gracefully to a backup Routing Engine and to preserve routing protocol information.
Required Privilege Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.