A Multicast-Broadcast over a Single Frequency Network (MBSFN) message may be multicasted to a cluster of network elements. Using multicasting or unicasting based on a number of unacknowledged network elements of the cluster of network elements, the MBSFN message may be retransmitted to unacknowledged network elements in the cluster of network elements, subsequent to a time period to receive an acknowledgement message from a first and a second network element.