In this paper, a novel dual-bus WDM ring network is proposed, its medium access protocol is discussed, and the
system performance is analyzed. Compared with some existing network architecture and protocols, the proposed network can
achieve high throughput with moderate delays. We also proposed a slightly revised 10Gb/s WDM Ethernet using the ringshaped
dual bus with 4 wavelength channels. Simulation result shows that the proposed 10Gb/s WDM Ethernet has a better
throughput and delay performance than a conventional Ethernet based on CSMA.