To see whether or not nonstop active routing is enabled, issue the show task replication command. For BGP nonstop active routing, you can also issue the show bgp replication command.
For more information on these commands, see the JUNOS System Basics and Services Command Reference and JUNOS Routing Protocols and Policies Command Reference, respectively.
When you enable nonstop active routing and issue routing-related operational mode commands on the backup Routing Engine (such as show route, show bgp neighbor, show ospf database, and so on), the output might not match the output of the same commands issued on the master Routing Engine.
To display BFD state replication status, issue the show bfd session command. The replicated flag appears in the output for this command when a BFD session has been replicated to the backup Routing Engine. For more information, see the JUNOS Routing Protocols and Policies Command Reference.