The on-loss-of-keepalives statement is included at the [edit chassis redundancy failure] hierarchy level

You or a host subsystem initiates a change in mastership to the backup Routing Engine in the TX Matrix Plus router—The master Routing Engines in the T1600 routers detect a software release mismatch with the new master Routing Engine in the TX Matrix Plus router and switch mastership to their backup Routing Engines.

You attempt to initiate a change in mastership to a backup Routing Engine in a T1600 router—The new master Routing Engine in the T1600 router detects a software release mismatch with the master Routing Engine in the TX Matrix Plus router and relinquishes mastership to the original master Routing Engine. Routing Engine mastership in the TX Matrix Plus router does not switch in this case.

A host subsystem initiates a change in mastership to a backup Routing Engine in a T1600 router because the master Routing Engine has failed—The T1600 router is logically disconnected from the TX Matrix Plus router.

The on-loss-of-keepalives statement is not included at the [edit chassis redundancy failure] hierarchy level

You initiate a change in mastership to the backup Routing Engine in the TX Matrix Plus router—All T1600 routers are logically disconnected from the TX Matrix Plus router.

You initiate a change in mastership to a backup Routing Engine in a T1600 router—The T1600 router is logically disconnected from the TX Matrix Plus router. To reconnect the T1600 router, switch mastership of the new master Routing Engine in the T1600 router back to the original master Routing Engine.