A new PE router is configured to run OSPF as an IGP with LDP on...

Configure the mpls ldp session protection and mpls label protocol ldp commands on the interfaces on the new PE router that connect to the CENTER routers.

Configure the mpls ldp discovery targeted-hello accept and mpls ldp session protection commands on the interfaces on the new PE router that connect to the CE routers.

Configure the new PE router with the mpls ldp session protection command and on neighboring routers that connect to this new PE router.

Configure the new PE router with the mpls ldp session protection command on interfaces with directly connected neighbors.