Walking through walls

[HavinFun]

Can someone please help me, In karazhan Some of the mobs will aggro through a wall. Can someone help me fix this?

[Ellenor]

lower their aggro lvl or put them a little more back via gm/admin power

[Reflection]

You need to have vmaps enabled and a core that supports it. (I've never used this, so I can't help in any way, ask someone else.)

[HavinFun]

How do i enable vmaps and how do i find out which core i have lol