(CNN)Bayern Munich were sweating. Coach Pep Guardiola was a man under pressure.
A 3-1 humbling by Porto in the first leg of its European Champions League quarterfinal had provoked a host of uncomfortable questions for the German champions.
All of them were answered, emphatically, inside 40 minutes of the second leg.
A rampant Bayern found the net five times before halftime at the Allianz Arena thanks to Thiago, Jerome Boateng, Thomas Muller and Robert Lewandowski, who bagged two.
The Portuguese side simply could not live with the attacking brio of Bayern, who looked likely to score every time it advanced into the opposition half.
It eventually ran out 6-1 victors on the night to complete a comprehensive 7-4 aggregate win.
Now no team that is left in the continent's premier club contest will fancy facing Bayern or Guardiola, the man who led Spanish side Barcelona to two titles in the competition.
The rout was kick started by