ForestCast: A Central Solution to Heuristically Constructing Trees

The first requirement stresses that the solution needs to ensure that the actual available upload bandwidth at each node should be utilized as much as possible. Any solution must, therefore, adapt to the given upload bandwidth of the individual nodes. This implies that even nodes with petty upload bandwidth should be utilized (see Section 2.5 on multiple streams). The second requirement puts focus on latencies between the actual nodes. It also implies that the depth of the multicast trees should be shallow to minimize latencies (this is at least true given identical node latencies). Finally, the solution should continuously reconfigure the system, as there will always exist some network dynamism. By network dynamism we refer to i) nodes joining/leaving/failing, or ii) network capacity changing due to network congestion etc.