This paper investigates the performance of switched-Ethernet LANs when transporting real-time video streams. Our study covers several switched-LAN topologies that employ switches with different capabilities. Such capabilities include the use of shared versus dedicated ports and single versus multipriority access buffers in the switch ports. As an example, we consider the transport of several medium and low packet video streams that correspond to video conferencing activities over a switched LAN. Our results show the impact of LAN switch parameters on the delay and loss performance of real-time video streams.
