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信用是光纤通道节点在注册过程中配置的重要服务参数,其大小直接决定两节点的通信性能。详细分析了光纤通道基于信用的两种流控机制与实现算法,建立了流量控制与差错控制技术的分析模型,基于有差错、无差错带确认这两种情况,分别导出了链路吞吐量与信用值、带宽、单帧出错概率、通信距离等的关系。最后给出了光纤通道网络在航空航天近距离应用场景下的最优信用的取值及序列划分的建议。
Credit is an important service parameter configured by Fiber Channel nodes in the registration process. Its size directly determines the communication performance of two nodes. In this paper, we analyzed two FCM-based flow control and implementation algorithms in detail and established an analytical model of flow control and error control. Based on the two cases of error-free and error-free zone identification, the link throughput and Credit value, bandwidth, single frame error probability, communication distance and so on. At last, the optimal credit value and sequence division of Fiber Channel network in aerospace short range applications are given.