Ulster scored a late try to claim a 43-36 win at the Wolfson Stadium in Zwide.
Frans Steyn scores the first of his two tries for Montpellier against Clermont.
Cheslin Kolbe scored his sixth try in eight Top 14 matches for Toulouse, against Bordeaux-Bègles.
Morné Steyn scored a try for Stade Français against Brive that began from their own 5m line.
The hosts claimed a 23-15 win at the Sportsground in Galway.
Glasgow scored seven tries in their 43-13 win at Scotstoun Stadium
A last-minute penalty goal gave the Cheetahs a 24-23 win in Parma.
The Lions scored five tries in their 44-17 win at Ellis Park.
The hosts scored four tries in their 29-20 win at Ellis Park.
Toulouse wing Cheslin Kolbe troubled the Clermont defence throughout their French Top 14 clash.