Independent spanning trees on even networks

The use of multiple independent spanning trees (ISTs) for data broadcasting in networks provides a number of advantages, including the increase of fault-tolerance and bandwidth. Thus, the designs of multiple ISTs on several classes of networks have been widely investigated. In this paper, we give an algorithm to construct ISTs on even networks, and show that these ISTs are optimal for height and path lengths, and each path in the ISTs has length at most the length of the shortest path+4 in the even network.