Martin O' Neill's side turned in a good performance against the Group D minnows, in the process recording the largest ever winning margin seen by a crowd at Lansdowne Road.
Robbie Keane grabbed a first-half hat-trick in just 17 minutes- one of those a penalty- to send Ireland in 3-0 up at the break.
In the early part of the second-half that scoreline was doubled, thanks to a brace from James McClean and an own goal from Gibraltar goalkeeper Perez.
Wes Hoolahan (who was named Man of the Match) added the seventh goal midway through the second-half, to send Ireland top of Group D on goal difference.
