ations will always have to wait for what is called maximum token rotation time, that is, the amount of time it takes for the token to be passed completely around the ring, but they will always get a turn. Thus, for high-congestion situations, a token-pass- ing environment may be better. Traditional token ring LANs operate at two speeds-4 and 16 Mbps. Like Ethernet, these speeds were fine for the limited requirements of text-based LAN traffic that was characteristic of early LAN deploy- ments. However, as demand for bandwidth climbed, the need to elimi- nate the bottleneck in the token ring domain emerged and fast token ring was born. In 1998, the IEEE 802.5 committee (the oversight com- mittee for token ring technology) announced draft standards for 100 Mbps high-speed token ring (HSTR 802.5t). A number of vendors stepped up to the challenge and began to produce high-speed token ring equipment including Madge Networks and IBM. Gigabit token ring is on the horizon as draft standard 802.5v, and while it may become a full-fledged product, many believe that it may never reach commercial status because of competition from the far less expensive Gigabit Ethernet. Logical LAN Design One other topic that should be covered before we conclude our discussion of LANs is logical design. Two designs for LAN data management have emerged over the years. The first is called peer to peer. In a peer-to-peer LAN, shown in Figure 5-24, all stations on the network operate at the Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com Copyright © 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website. Premises Technologies Premises Technologies Figure 5-24 A peer-to-peer Clients Figure 5-25 A client-server Server same protocol layer, and all have equal access at any time to the shared medium and other resources on the network. They do not have to wait for any kind of permission to transmit; they simply do SO. Traditional CSMA/CD is an exam