Optical network analysis under non-uniform traffic distribution

Abstract

(cid:190) Multihop regular networks are analyzed for applications under non-uniform traffic distribution, taking the conventional SPF (short path first) algorithm as the routing protocol. Simulations of Manhattan Street and Shuffle Net topologies without buffer memories, under constant bit rate and variable bit rate traffic flow distributions, are analyzed using the criterion of packet loss fraction. The results show that traffic bottlenecks are caused by packet losses produced either when full capacity of heavier loaded network links are reached or when optical packets arrive within the same time frame at optical switching nodes. The results and the methodology adopted are general with applicability not only restricted to optical networks.