Darren Boyce scored twice as Glentoran beat Bray Wanderers 3-0 in the Setanta Cup first round second leg at the Oval.
It put the Glens through 7-2 on aggregate and they will play Sligo Rovers in the quarter-finals.
Boyce's glancing header from Stephen Carson's cross gave them an 11th-minute lead and skipper Colin Nixon headed number two just before half-time.
Boyce netted a penalty on 75 minutes after Andrew Waterworth had been fouled by Dane Massey.
Jason Byrne hit an upright from a tight angle on 78 minutes as Bray battled to get on the scoresheet.