Dual-redundancy FC network transmission system

Abstract

A dual-redundancy FC network transmission system comprises a sending end and a receiving end. The sending end comprises two buffer areas, two FC ports which are respectively connected with the two buffer areas in series, and a sending end controller which is used for sending data frames to the two buffer areas at the same time; the sending also comprises a sending control module which is used for receiving a blocking signal sent by one FC port when the FC port is blocked; the receiving end comprises a serial number checking module and a redundancy eliminating module, wherein the serial number checking module is used for receiving data transmitted by the two FC ports and detecting and filtering the continuity of the SN, and the redundancy eliminating module is connected with the serial number checking module in series and is used for eliminating repeated frames; the receiving module also comprises an out-of-order rearrangement module which is connected with the redundancy elimination module in series, rearranges the received out-of-order frames and reports data frames. According to the dual-redundancy FC network transmission system provided by the invention, the risks of frame loss, disorder and the like in an existing FC redundant network method are solved, and an obvious effect is achieved for improving the data transmission reliability of the FC network in safety-critical application.

Description

technical field [0001] The invention belongs to the technical field of FC optical fiber channel redundant transmission, and in particular relates to a double redundant FC network transmission system. Background technique [0002] FC (Fiber Channel) networks are widely used in safety-critical information transmission applications, and in order to further improve the reliability of the network, a dual-redundant network is generally used, that is, signals are sent, transmitted and received through the same two networks at the same time, as long as If one network is normal, the signal can be transmitted successfully. For details, see figure 1 . [0003] Then there are following deficiencies in the existing FC redundancy method: [0004] (1) There is a risk of disorder: [0005] If the A network fails, the B network is normal. After a period of time, the A network fault is restored, and the B network is always normal; there are data in the buffers in the B network channel, but...

AI Technical Summary

Problems solved by technology

[0008] In view of the risks of out-of-sequence and frame loss in the existing method, the existing redundancy method cannot be used for the problem of highly reliable information transmission. The purpose of the present invention is to provide a dual-redundant FC network transmission system

Images