Dual-computer hot standby system and communication method thereof
A technology of dual-machine hot backup and communication method, applied in transmission systems, digital transmission systems, electrical components, etc., can solve the problems of difficult software and hardware implementation and high system cost, and achieve the effect of simplifying difficulty and simplifying topology structure.
Inactive Publication Date: 2016-07-20
SHANGHAI FUXIN INTELLIGENT TRANSPORTATION SOLUTIONS
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Problems solved by technology
Can be seen in figure 1 In the redundant communication design of the existing dual-system hot standby system shown, each board of the active and standby machines allocates two physical ports for communicating with the external system. Since the standby machine does not output, the Under the constraint, in fact, there are always two physical ports when the system is working normally, that is, the two physical ports of the standby machine are in an idle state, and the system needs to configure communication address information for all physical ports in the dual network, and the software also needs to configure This is dealt with separately, it can be seen that the implementation of software and hardware is difficult and the system cost is high
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[0030] Such as figure 2 As shown, it is a schematic diagram of the topology of the dual-computer hot backup system of the embodiment of the present invention; the dual-computer hot backup system of the embodiment of the present invention includes A machine and B machine that are hot backup each other; figure 2 The A series 1a and the B series 1b in the topological structure of the above all adopt the dual-computer hot standby system of the embodiment of the present invention, taking the A series 1a as an example:
[0031] The main machine 2a is one of the A machine and the B machine, and the standby machine 2b is the other of the A machine and the B machine.
[0032] Machine A communicates with an external system through an external communication port 3 , and machine B communicates with the external system through an external communication port 3 . Preferably, in the embodiment of the present invention, the external communication port 3 of the machine A is a physical port; ...
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The invention discloses a dual-computer hot standby system, comprising an A computer and a B computer, which are hot standby to each other, wherein one of the A computer and the B computer is used as a host and the other is used as a standby computer; the host comprises two sending channels for sending messages to an external system, the first sending channel directly sends the messages to the outside by the host, and the second sending channel firstly forwards the messages to the standby computer by the host and then sends the messages to the outside by the standby computer; the host comprises two receiving channels for receiving messages from the external system, the first receiving channel is directly obtained by the host, and the second receiving channel is obtained by the standby computer from the outside at first and then is forwarded to the host by the standby computer. The invention further discloses a communication method for the dual computer hot standby system. By adopting the dual-computer hot standby system disclosed by the invention, a dual-computer redundant communication topological structure can be simplified, and the implementation difficulty of hardware and software and the system cost can be reduced, while the system reliability and availability are satisfied.
Description
technical field [0001] The invention relates to the field of computer control, in particular to a dual-computer hot backup system; the invention also relates to a communication method of the dual-machine hot backup system. Background technique [0002] In the field of computer control, dual-machine hot backup is a typical method to improve system reliability and availability. Since a single computer can meet the reliability index of the system, dual-machine hot backup and redundant communication are more about system availability. Consideration: When the main machine fails, it can quickly switch to the standby machine so that the system can continue to run. In a typical dual-machine hot standby system, the two machines maintain synchronous operation, and the working process of the main machine and the standby machine is exactly the same, except that in the output link, only the main machine outputs, and the standby machine does not. [0003] Such as figure 1 As shown, it i...
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IPC IPC(8): H04L12/24
CPCH04L41/0668
Inventor 吴昊苏经国陆盛浩
Owner SHANGHAI FUXIN INTELLIGENT TRANSPORTATION SOLUTIONS