The ceasefire is bilateral. BOTH sides have to cease fire.
I think the agreement is that Israel is still allowed defensive fire. It was expressly pointed out that Israel will cease all offensive action. Anyhow, this resolution will probably be about as effective as the ones before it, and the ones used on Saddam, etc.
I also have faith that the administration has learned the UN Tango by now (after the Iraq run-up) and I trust that Condi, W and Bolton have got it straight. I believe they are the types who truly want to do the right thing.