Time-Dependent Performance of a Multi-Hop Software Defined Network

It has been recently observed that Software Defined Networks (SDN) can change the paths of different connections in network at a relatively frequent pace to improve overall performance, including delay and packet loss, or respond other needs such as security. These changes mean SDN controls will seldom operate steady state; rather, may often be transient mode, especially when is heavily loaded path are critically important. Hence, we propose analysis networks better understand how switches’ workloads affect multi-hop networks’ performance. Since conventional queueing models difficult solve for behaviour simulations take excessive computation time due need statistical accuracy, use diffusion approximation study controlled by SDN. The results show optimization should consider effects transients included design algorithms controllers optimize