Alcatel-Lucent 7750 SR-OS Configuration Manual page 98

IP Router Command Reference
configure
Page 98
— router
— l2tp
— tunnel-selection-blacklist
— add-tunnel never
— add-tunnel on reason>[reason...(upto 8 max)]
— no add-tunnel
— add-tunnel
— max-list-length count
— no max-list-length
— max-time minutes
— no max-time
— timeout-action action
— no timeout-action
7750 SR OS Router Configuration Guide