Abstract:

It is well-known that the FDDI guarantees a bounded access delay and an average bandwidth for synchronous traffic. However, this fact alone cannot effectively support many real-time applications that require the timely delivery of each critical message. We solve this problem by developing a synchronous bandwidth allocation (SBA) scheme which calculates the synchronous bandwidth necessary for each application to satisfy its message-delivery delay requirement. The result obtained in this paper is complementary to the SBA protocol in the FDDI station management standard SMT 7.2, and is essential for effective use of the FDDI\'s capacity of supporting synchronous traffic.