Log2 (N, m, p) strictly nonblocking networks

A class of self-routing strictly nonblocking switching networks, called the Log₂ (N, m, p) network, is introduced. The proposed networks are self-routing and have O (Log₂ N) stages between each inlet-outlet pair. The self-routing capability makes it attractive for high-speed switching; the small number of crosspoints between each inlet-outlet pair also makes the network well suited for many nonlogic photonic switching technologies. The complexity and the fault-tolerant capability of the strictly nonblocking Log₂ (N, m, p) network are analyzed. To show the merits of the proposed network, the authors compare it to the Cantor network, which is also strictly nonblocking and has similar characteristics