The Cloud Manager Orchestration datagrid facility provides a multicast-based file distribution service that allows large multi-gigabyte files to be simultaneously delivered to a large number of recipient machines while using far less network bandwidth than would be used by copying the file individually to each node. This service is available only in network environments that support IP multicasting. Aside from the file multicast service, all other features of the datagrid use normal unicast network operations and do not require multicast support. The routing and troubleshooting pointers provided above for network discovery also apply to datagrid multicasting. In addition, due to the potentially large bandwidth used by file transfers, you might want to limit the set of interfaces on which files are multicasted.