Abstract
AbstractWith the improvement of the speed of computers in recent years, there is required a local area network (LAN) that can realize a high‐speed broadband communication. For this purpose, asynchronous transfer mode (ATM) LANs based on ATM technique is considered important.This paper considers the bandwidth reservation control as a means of traffic control in ATM LAN and evaluates the performance by simulation. The evaluation is made for the following methods of congestion control: ACK/NACK method, based on the ACK/NACK signal which is returned when the bandwidth reservation succeeds/fails; the dynamic ACK/NACK method, which is an improvement so that the control can be adapted to the traffic load; and control method based on the link information from the switch.It is shown for the single‐stage switching network that the dynamic ACK/NACK method has a better performance when the traffic is low but the control method based on the link information has the highest performance when the traffic is high. It also is shown for the three‐stage switching network that the control method based on the link information has the highest performance.
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