Hi,
Before configuring OSPF GR or OSPF TE, you must enable opaque LSA capability running the opaque-capability enable command. Opaque LSAs provide a generic mechanism for OSPF extension:
OSPF supports GR using Type 9 LSAs.
OSPF supports TE using Type 10 LSAs.
Note: Enabling or disabling the opaque LSA function may delete and re-establish all sessions and instances.