This read-create enumerated value specifies that the IGP should use this tunnel, when up, in its enhanced shortest-path-first calculation, specifically for OSPF as noted in its description. It gives an administrator the OSPF-specific equivalent of the IS-IS auto-route-announce control, letting OSPF automatically prefer this tunnel once operational. An operator running OSPF as the IGP would set csMplsPathOspfAutoRouteAnnounce to on(1) so OSPF-computed routes shift onto this tunnel as soon as it is up.