Since I was seeing tanks having difficulties, see here:
http://forum.square-enix.com/ffxiv/t...r-geared-tanks

I decide to try to learn to do the tank role. What I encountered at my lowly level 18 Gladiator is that I had trouble keeping up with archers for enmity. I flash, shield lob, etc. But the mobs still ignore me as soon as the archer shoots, what am I doing wrong?