If you are deploying a Linux OS and the deployment stops, check the console of the target server to see if the installer is in interactive mode. If the installer is in interactive mode, the deployment timed out because of a delay in the transmission of data from the management server to the target server. This delay usually occurs because the switch or switches connecting the two machines has spanning tree enabled. Either turn off spanning tree on the switch or disable spanning tree for the ports that are connected to the management server and the target server.
If spanning tree is already disabled and OS deployment stops, there may be a problem with your network.
For Red Hat installations to work with some networking configurations, you must enable spanning tree.