Fault tolerance of reconfigurable bi-directional double-loop LANs

Double-loop is a very popular structure in loop network topology. A reconfigurable bi-directional double-loop structure is recently developed. It has a new structure which is different from any existing double-loop structure and no previous methods can be used to evaluate its fault tolerance which is demanded for all fresh ideas. This paper provides an easy approach to offset this deficiency. A network is segmented first based on its block connection and then analyzed in a recursive way. The calculation using this method requires linear time and very small memory capacity. This method can be used in analyzing the fault tolerance of other topologically segmental loop networks.