Figure 3
From: Integrated multicast routing algorithms considering traffic engineering for broadband IPTV services
Sample execution of MSTSAR. (a) An example of graph. (b) The modified graph in which the links with bandwidth less than b units are eliminated. (c) The virtual graph which is obtained by executing the minimal spanning tree algorithm on the modified graph. (d) The virtual tree including all the egress nodes. (e) The multicast tree including the egress nodes, 2, 11, 12 and 3. (f) The multicast tree including all the egress nodes.