The president's office said he spoke by telephone to Italy's Prime Minister Romano Prodi, Finnish Prime Minister Matti Vanhanen whose country holds the EU presidency, and Turkish Prime Minister Recep Tayyip Erdogan.
As French soldiers started arriving in southern Lebanon, Chirac also held talks with UN Secretary General Kofi Annan.
The UN has issued an urgent call for European countries to quickly provide troops for a peacekeeping force.
Italy, Finland and Turkey have agreed in principle to send soldiers, but want more details on the precise mandate of the force to police the ceasefire between Israel and Hezbollah militia.
Chirac highlighted "the need to very quickly specify the missions, the rules of engagement and the chain of command" of the UN interim force in Lebanon (UNIFIL), his office said.
He also insisted on the need for balance in the distribution of contingents "which must reflect the commitment of all the international community and, in particular, European countries".
France, as the former colonial power in Lebanon, was expected to lead an international force capable of stopping Hezbollah from using its bases in southern Lebanon to attack Israel.
But with a commitment so far of only 200 troops - around one tenth the number it had been expected to offer - France has been accused of dragging its feet.
The first 50 French troops - navy special forces - landed in Lebanon on Saturday.