Performance analysis of layer3 switch: case of flow-driven connection setup

The layer3 switch enables us to fast transmit IP datagrams using the cut-th rough technique. The current layer3 router would become bottleneck in terms of delay performance as the amount of traffic injected into high speed net works gets relatively large. Thus, the layer3 switch should be an important element constructing the next generation Internet backbone. In this paper, we analyze the cut-through rate, the datagram waiting time and the mis-ord ered rate of a layer3 switch in case of flow-driven connection setup. In th e analysis, by using S-state Markov modulated Bernoulli process (MMBP), we model the arrival process of IP flow and IP datagram from each source. Furt hermore, we investigate impacts of the arrival rate and the average datagra m length on the performance.