Accoriding to Microsoft one would consider implementing multicasting if your organization: – Has network routers that support multicasting – Wants to use network bandwidth efficiently. This is because with this feature, images are sent over the network only once, and you can specify limitations (for example, to only use 10 percent of your bandwidth). -------------------------------------------------------------------------------------------------------------------------- So, with that said: I have a test environment with Windows 2008 Server running Windows Deployment Service with multicasting. There are 25 Intel Quad Core PC’s (all identical) to test mutlticasting. PC NIC’s , Router, Switch, and WDS are set to Gigabit connection. I have successfully download the images to the workstations several times. However, there are two problems? 1 – WDS network is set to Gigabit, I still receive 10-Mbps. 2 – Can’t find a way to specify limitations on bandwidth. Any ideas would be helpful and appreciated.