Brian O'Driscoll believes Leinster are building a dynasty after they won a record-breaking third Heineken Cup title in four years when they beat Ulster 42-14 in the all-Ireland final at Twickenham.

First-half tries by Sean O'Brien and Cian Healy put Leinster ahead, with two penalties from Ruan Pienaar keeping Ulster in touch at half time.

A penalty try for the defending champions set them on course to retaining their title, with Dan Tuohy's score turning out to be scant consolation for Ulster after Heinke van der Merwe and Sean Cronin crossed for Leinster.

O'Driscoll admitted Leinster set themselves a target of becoming one of the greatest sides in European history after they won their first title in 2009.

He told Sky Sports 3: "It will take a couple of days for it to properly to settle in but after we won one we talked about not being content with that and trying to create some sort of dynasty and something to be remembered by.

"We're going in the right direction towards doing that but I know this team will be hungry for more.

"That's why it's enjoyable, You're going in day-in and day-out because you know you're going to be pushed by the guy next to you. We played for one another out there and that really showed today.

"The energy from all 23 was phenomenal, it shows where we are as a squad. I only came in for the knockout stages. For the important part, but the hard graft was put in during the group stages."

Leinster captain Leo Cullen lifted the trophy for a second time and compared his emotions to those of Masters champion Bubba Watson.

"To quote Bubba Watson, I haven't got that far in my dreams," Cullen said.

"There is something special about playing for the team you grew up supporting. That is the team you want to represent more than anything.

"Success with this team means the world to me."

Last year, Leinster staged the greatest comeback in Heineken Cup final history to beat Northampton 33-22 after trailing 22-6.

Leinster today led 14-6 at the interval and coach Joe Schmidt reminded his players of what can happen in Heineken Cup finals.

"Finals are about getting a lead and if we learned anything from last year it is that you have to keep playing, no matter what the situation," Cullen said.

Ulster were back in the Heineken Cup final for the first time in 13 years and hooker Rory Best insisted the pain of defeat had to be a source of inspiration.

"It was heartbreaking watching Leinster lift the trophy but that is what you learn from," Best said.

"You have to watch that and that has to drive you for next year.

"Defeats like this and watching Leinster lift the trophy has to be in our minds now for the next 12 months.

"We have to be aiming to be in the Aviva next year (for the final).

"We can't pat ourselves on the back for being in the Heineken Cup final when four years ago you thought you were never going to get out of the group.

"You have to be looking to win this trophy."