The performance of various interconnection networks (INs) is evaluated and compared. The throughput and complexity of the buffered and unbuffered Baseline IN (simple and augmented), in packet-switched environments, are compared with those of the crossbar, the (un)buffered BIN, and the single-buffered BIN. It is shown that adding buffers to a network improves its throughput. It is also shown that augmentation improves the performance of a network more than buffering does for networks with up to seven stages, whereas buffering is recommended for larger networks.