System and method for redundant Ethernet communication
An Ethernet and redundancy technology, applied in the field of redundant Ethernet communication systems, can solve the problems of long synchronization time, TCP/IP protocol stack error detection rate, low availability, etc., to improve system availability and improve error detection. Output rate, the effect of transparent data transmission
Active Publication Date: 2009-04-15
CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD
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[0003] In view of this, the present invention is to provide a system and method for redundant Ethernet communication, to solve the above-mentioned communication equipment using inter-device synchronization, easy synchronization time, long availability Low, there is a problem with the error detection rate in the process of using the cyclic redundancy check in the TCP / IP protocol stack
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[0038] In order to clearly illustrate the system and method of the present invention, preferred embodiments are given below in detail with reference to the accompanying drawings.
[0039] see figure 1 , figure 2 ,include:
[0040] Two identical data comparators, data comparator A and data comparator B, data comparators include:
[0041] The transceiver unit is used to receive the application data, send the application data to the connected central processor for data processing after the trigger of the comparison unit, or receive the processed data of the central processor, and send the data to the connected CPU after the trigger of the comparison unit Application side;
[0042] The comparison unit is used to compare the data with the connected data comparator after receiving the application data, and trigger the transceiver unit after matching;
[0043] The duplication unit is used to obtain the application data from the connected data comparator and send it to the compar...
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The invention discloses a system of redundancy Ethernet communication, which comprises two data comparators that are connected with each other, and central processing units used for sending the received application data that is compared to be proved consistent to the respective connection, or sending out the data that is processed by the central processing units after being compared to be proved consistent; the two central processing units are connected with each other by a synchronizator which is used for the synchronization between the central processing units; the central processing units process the data according to TCP / IP processing protocol; within the preset proving time, the data processed by the central processing units are connected with each other and the data processed by a processing unit are obtained and then compared with each other; when being consistent, the two data are sent by cross combination; a network interface controller is used for sending the data processed by the central processing units are connected with each other out, or transmitting the received network data to the central processing units to be processed. The invention also discloses a method of the redundancy Ethernet communication, so as to improve the detectable rate of error and realize the synchronization inside equipment.
Description
technical field [0001] The invention relates to the technical field of computers, in particular to a redundant Ethernet communication system and method. Background technique [0002] In TCP / IP communication, the TCP / IP communication used is one-way, that is, there is only one set of communication equipment, and when the hardware fails, the communication will be interrupted. Although dual devices can be used, only the synchronization between devices is realized, that is, the mutual redundancy between the devices is not the synchronization within the device. The synchronization time is long, data loss during the synchronization period occurs, and the availability is low. In addition, a single system has the possibility of errors in the data operation process. If there are two bit (bit) jumps during the verification process, the error may not be detected. The checksum and cyclic redundancy check are used in the TCP / IP protocol stack There is a problem of false detection rate i...
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IPC IPC(8): H04L1/22
Inventor 张波杨剑车惠军周周
Owner CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD