We have an issue with Ghost server getting over vlans (layer 2). This is using Mulicast, Directed Broadcast and unicast. There are no access lists or any other security hurdles between them. It works when it's on the same vlan (obviously).
Also, our network has a lot of layer 3 segments. Can ghost work over routed links? On one, of the L3 segments I put an IP helper address in to no avail.