Per the object's own description this indicates whether an FRR (fast re-route) backup tunnel needs to be created for this dynamic encap tunnel, even though the object's name (RecordRoute) suggests it also relates to RSVP-TE's record-route option for tracking the actual hop path taken. An admin enabling this expects the router to provision a local-repair backup LSP that can take over within tens of milliseconds if a downstream link fails, without waiting for full end-to-end re-signaling. For example, a tunnel with this set to on(1) that experiences a link failure one hop downstream should show near-instantaneous traffic recovery onto a pre-signaled FRR backup rather than the several-second delay a full re-signal would take.