The All Blacks are Tri Nations champions and have retained the Bledisloe Cup after beating Australia with a second half blitz in Brisbane.

Things were not looking good in the season-defining game when the Wallabies scored twice either side of halftime to take a 17-7 lead but it sparked the All Blacks to life.

First a Conrad Smith break set up prop Tony Woodcock for a try then halfback Piri Weepu and first-five Dan Carter both dotted down in a 15 minute burst that sealed victory for the All Blacks.

The Wallabies struck back with a late try to bring them within striking distance and mounted a wave of attacks on fulltime but the All Blacks just held them out.

In the first half, fullback Mils Muliaina scored early to give the visitors a 7-0 lead in front of a capacity crowd at Suncorp Stadium.

Australia had plenty of possession but only managed a penalty from Matt Giteau until the final act of the first when a well-planned move saw fullback Adam Ashley-Cooper score out wide.

They then scored again immediately after the break to look capable of giving coach Robbie Deans the perfect start to his coaching tenure in Australia.

However, the men in black answered the challenge to instead give their coach Graham Henry victory over his rival.