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Fibre channel (FC) is the main candidate architecture for “unified network”. Flow control deals with the problem in which a de- vice receives frames faster than it can process them. Credit is an important service parameter for fibre channel flow control. Configuring the credit reasonably can avoid buffer overflow in nodes. This paper derives the mathematic relationships among credit, bandwidth and message sets under real-time condition according as three main topologies of fibre channel, and proposes the credit determination and the optimal credit for typical message sets. This study is based on the features of hard real-time communications in avionics environ- ment.
Fiber Channel (FC) is the main candidate architecture for “unified network”. Flow control deals with the problem in which a de- vice receives frames faster than it can process them. Credit is an important service parameter for fiber channel flow control. the paper reasonably can avoid buffer overflow in nodes. This paper derives the mathematic relationships among credit, bandwidth and message sets under real-time condition according as three main topologies of fiber channel, and vi the credit determination and the optimal credit for typical message sets . This study is based on the features of hard real-time communications in avionics environ- ment.