What troops does the United Nations use to enforce a no-fly zone?

The United Nations Security Council has in the past declared no-fly zones over conflict regions.
https://www.un.org/press/en/2011/sc10200.doc.htm

But, what troops does the UN use to enforce this given that the peacekeeping forces it has are very limited in number? Or is this just a call to action on member states to use their military to enforce the UNSC's declaration?