This read-create integer selects whether the protection group automatically switches traffic back to the working LSP once it's repaired, called revertive mode, or stays on the protection LSP until manually switched back, called non-revertive mode. Admins choose revertive mode to restore the preferred primary path automatically after a fault clears, or non-revertive mode to avoid a second disruptive switch and control the switch-back timing manually. For example, setting hh3cMplsPsRevertiveMode to 1 (revertive) means traffic automatically returns to the working LSP, after the WTR timer expires, once that LSP's link failure is resolved.