If you connect too many hubs, you end up with a shared network too large to let users work effectively. To design a switching layout for your network, start with a switch on the central backbone of your enterprise network. This switch must extend to hubs or more switches. This setup is becoming more common as low-cost switches are becoming more prevalent. This configuration provides more security and better performance for each user than any other network segmenting configuration, but it costs more per port than any other segmenting method.
Most companies still connect their user workstations to hubs.
If your central switch connects to hubs or groups of hubs for user workstations, you can take several steps to improve your network's performance. Group frequently talking partners together. Consider keeping some servers on the same network segment as the servers' most frequent users. This concept runs contrary to the typical centralized-IS mentality, which encourages you to keep all major servers in a common area, but it might increase your network's performance. For example, if 90 percent of a server's traffic relates to your graphic arts department's production work, you might want to place that server on the graphic arts department's physical network segment.