This read-create enumerated value specifies whether the IGP should be told to use this tunnel, when it is up, in its enhanced shortest-path-first calculation for BGP-related routing decisions. Enabling it lets BGP next-hop resolution automatically prefer this MPLS-TE tunnel instead of the underlying IGP-computed path whenever the tunnel is operational. An administrator engineering traffic for a specific BGP-learned destination onto a dedicated low-latency tunnel would set csMplsPathBgpAutoRouteAnnounce to on(1) so BGP automatically routes over the tunnel once it comes up.