As far as I know, Vampires can compel any species...unless the other supernaturals have protection against it. As for Vampires compelling another Vampire..I am not sure if that's possible, unless the Vampire compelling is much much older and stronger, than the Vampire it's trying to use mind compulsion on. I am not sure, if they'd have a natural ability to resist to it though. Not unless they somehow build up some kind of tolerance/resistance against that kind of magic...or have protection against it...as stated above. :) But that's just my take and my knowledge on the subject of compulsion. It may vary from other sources, for other people; depending on what they've read, or seen ect.