FDDI was designed to be fast and reliable. Based on the same token passing technique as token ring, FDDI adds timing devices that allow data to be transmitted at much higher speeds. Its 100 Mbps bandwidth is 10 times greater than that of Ethernet. The extra speed allows FDDI to transmit more data per unit of time. In addition, FDDI permits a large number of devices to exploit the extra transmission speed. It supports multiple tokens, which means that many different packets of data can be transmitted over the LAN simultaneously.