Alcatel-Lucent 7710 SR Configuration Manual page 197

Interface Configuration
interface group handler (IGH) — The default state for an IGH is shutdown.
mda — The default state for a mda is no shutdown.
lag — The default state for a Link Aggregation Group (LAG) is shutdown.
port — The default state for a port is shutdown.
path — The default state for a SONET/SDH path is shutdown.
7710 SR OS Interface Configuration Guide Page 171