The impact of bursty traffic on FPCF packet switch performance

This paper analyses and compares the performance of forward planning conflict-free (FPCF), virtual output queuing-partitioned (VOQ-P) and virtual output queuing-shared (VOQ-S) packet switches. The influence of packet burst size, offered switch load and packet switch size are all investigated. Packet loss probability, average packet delay and 99.9% packet delay values are also derived. In comparison tests, FPCF packet switches perform better than VOQ-P packet switches and yield similar results to VOQ-S packet switches. The advantage of VOQ-S switches is manifested in somewhat lower probability of packet loss, while the advantage of FPCF switches is revealed in the limited values of their maximum packet delays. q 2002 Elsevier Science B.V. All rights reserved.