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A detection method for redundancy degradation faults in dual-redundant fiber channel networks

A fiber channel and detection method technology, applied in the field of testability, can solve problems such as testability design defects, affecting the testability and security of airborne FC networks, and achieve the effect of improving testability and security

Active Publication Date: 2022-02-11
XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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Problems solved by technology

The redundant communication mechanism ensures that as long as the remaining FC channel between the sending and receiving nodes works normally, the communication process can proceed normally, which greatly improves the reliability of the FC network; however, the existing airborne FC network has serious problems with the redundant communication mechanism When one of the channels fails, the redundancy of the FC network has been degraded, that is, the reliability of the FC network has been reduced, but the normal communication process between the sending and receiving nodes can still be maintained. On the surface, it seems that "communication everything Normal", which causes the redundancy degradation fault to become an undetected hidden fault, which brings potential safety hazards to the FC network and seriously affects the testability and security of the airborne FC network. Therefore, the airborne FC network redundancy degradation fault The fault detection of the

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  • A detection method for redundancy degradation faults in dual-redundant fiber channel networks
  • A detection method for redundancy degradation faults in dual-redundant fiber channel networks

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Embodiment Construction

[0035] In order to further clarify the embodiments of the present invention, in combination with figure 2 The specific implementation is further described, and the specific methods are as follows:

[0036] The present invention is applicable to a dual-redundancy FC node with two independent MACs, each MAC corresponds to one FC channel, and is completed by a redundancy fault detection unit, a redundancy transmission control unit, a MAC error detection unit and other units inside the FC node, and the detection The mechanism is as follows:

[0037] 1) The redundancy fault detection unit reads the PSM (Port State Machine, port state machine) in two MACs and compares them, as the PSM in one MAC is in a non-AC state, while the PSM in another MAC is in an AC state state, the redundancy fault detection unit judges that the FC channel link state corresponding to the MAC in the non-AC state is wrong, resulting in a redundancy degradation fault in the FC network;

[0038] 2) The two M...

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Abstract

The invention belongs to the technical field of testing, and discloses a detection method for a redundancy degradation fault of a double-redundancy optical fiber channel network. The method described is applicable to Fiber Channel nodes with two independent media access controllers. The method includes: obtaining the communication status of two independent media access controllers; comparing the communication status of the two independent media access controllers to obtain a comparison result; and judging whether a redundancy degradation fault occurs according to the comparison result; when the redundancy is detected Report the host or network manager after downgrading the fault.

Description

technical field [0001] The invention relates to a detection method for a redundancy degradation fault of a double-redundancy FC network, and belongs to the technical field of testing. Background technique [0002] The FC (Fibre Channel, Fiber Channel) network has the advantages of high speed, strong anti-interference ability, low delay, and good scalability, and has been widely used in aviation airborne networks. The airborne FC network undertakes the central function of the interconnection between avionics equipment and plays an important role in the avionics system. Therefore, the dual-redundancy technology is widely used to build an airborne dual-redundant FC network to improve the reliability of the network, such as figure 1 It is a typical airborne dual-redundancy FC network composed of FC nodes, switches and network managers. [0003] The existing airborne dual-redundant FC network adopts the redundant communication mechanism of "double transmission and double-receipt...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/077H04L41/0677H04L43/0852
CPCH04B10/0771H04L41/0677H04L43/0852
Inventor 孙东旭朱志强杨媛媛武坚张楠武健
Owner XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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