Lower chances with unknown undergraduate university?

Hey guys,

right now I am looking for where to study. My grades are not that bad, but not enough for an ivy league university.

I am wondering now, are chances of beeing successful or getting the job or you dream reduced by visiting an undergraduate programm at an unknown university, maybe even to study in europe and then try to do my MBA at an university with high reputation.

So all in all: How important is the name of the university you attend for you undergraduate degree when you do your MBA (just imagine it happens as planned) at an university with international high reputation?