Tree Construction Strategies for Survivable Overlay Multicasting in Dual Homing Networks

Due to the growing demand for high definition music and video content, an overlay multicasting providing live streaming services has been gaining popularity over last years. In this paper, we focus on applying the overlay multicasting for delivering of critical data that require to be transmitted safely, intact and with as little delay as possible, e.g., financial data, software security patches, antivirus signature database updates etc. To improve survivability of the overlay multicasting, we propose to use dual homing approach, i.e., each peer is connected to the overlay by two separate access links. We introduce several tree construction strategies and conduct simulation experiments to investigate problem of providing survivability to both static and dynamic types of network. Our studies demonstrate that the additional survivability requirements do not have a significant impact on the overlay multicasting system expressed as the streaming cost. Keywords-overlay multicasting; survivability; dual homing; simulation; tree construction.