DCS wired network communication link fault diagnosis method and device

Abstract

The invention provides a DCS wired network communication link fault diagnosis method and device. The DCS wired network communication link fault diagnosis method comprises the steps of determining signal equipment and a switch corresponding to each station; the ports of the signal devices corresponding to the stations are in communication connection with the ports of the switches corresponding to the stations; the ports of the switches corresponding to all the sites are in communication connection in series to form a looped network; when communication interruption occurs, fault diagnosis is carried out on the signal devices or the switches corresponding to ports on the basis of faults which are reported by a network management system and aim at the ports, and the network management system is in communication connection with the ports of the signal devices and is in communication connection with the ports of the switches. By associating the DCS with the signal equipment, the accuracy of fault diagnosis is improved, and a more detailed troubleshooting method is provided for communication interruption faults.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a DCS wired network communication link fault diagnosis method and device. Background Art

[0002] The Data Communication Subsystem (DCS) is the core of rail transit operations, responsible for monitoring and controlling key functions such as train operation, dispatching, communication and safety. It connects various devices distributed on the track line (such as signal machines, turnouts, station computers, etc.) through the network to achieve centralized management and real-time monitoring of the entire system. From a functional perspective, DCS is divided into a wired network subsystem, a wireless network subsystem and a network management subsystem. The network management subsystem is mainly responsible for monitoring and managing the wired network subsystem and the wireless network subsystem. When a fault occurs, the network management subsystem will issue an alarm message.

[0003] Normally, the terminal interface of the signal equipment is 100M, and the ring interface of the switch is 1G. When the signal equipment is abnormal, there may be large traffic fluctuations, occupying the transmission bandwidth of normal business, and then packet loss and retransmission will occur, affecting normal data interaction. When a large amount of traffic is continuously received, it may cause data flooding, forming a network storm, and affecting the business communication of all devices in the network. At present, most of the analysis of DCS wired network failures is reported directly from the wired network management system, but the wired network management system only detects the connectivity of the wired network and each port. It does not know which signal devices are connected to each port, so it cannot give clear maintenance guidance. Summary of the invention

[0004] The present invention provides a DCS wired network communication link fault diagnosis method and device, which are used to solve the defect that it is difficult for the network management system in the prior art to give a specific and accurate fault point for a network fault, and thus it is difficult to quickly troubleshoot the fault, thereby improving the accuracy of fault diagnosis and providing a more detailed troubleshooting method for communication interruption faults.

[0005] The present invention provides a DCS wired network communication link fault diagnosis method, comprising the following steps.

[0006] Determine the signal equipment and switches corresponding to each site; Connecting the ports of the signal device corresponding to each site to the ports of the switch corresponding to the site; The ports of the switches corresponding to each site are connected in series to form a ring network; When communication interruption occurs, based on the fault reported by the network management system for the port, fault diagnosis is performed on the signal device or the switch corresponding to the port, wherein the network management system is communicatively connected to the port of each signal device and is communicatively connected to the port of each switch.

[0007] According to a DCS wired network communication link fault diagnosis method provided by the present invention, the ports of switches corresponding to each site are connected in series to form a ring network, including: The ports of the switches corresponding to the various sites are connected in series through optical cables, and the connection mode between the ports of the switches corresponding to the various sites is a combination of multiple jump connection channels and multiple adjacent connection channels to form the ring network.

[0008] According to a DCS wired network communication link fault diagnosis method provided by the present invention, the multi-segment jump connection channel is used to connect the ports of the switches corresponding to non-adjacent sites in the ring network, and the multi-segment adjacent connection channel is used to connect the ports of the switches corresponding to adjacent sites in the ring network.

[0009] According to a DCS wired network communication link fault diagnosis method provided by the present invention, the method further includes: When communication interruption occurs, the network management system does not report a fault for the port, and the fault location is performed based on the traffic of the switch port.

[0010] According to a DCS wired network communication link fault diagnosis method provided by the present invention, there is at least one communication breakpoint in the ring network.

[0011] The present invention also provides a DCS wired network communication link fault diagnosis device, comprising the following modules: A determination module, used to determine the signal equipment and switches corresponding to each site; A first connection module, used to connect the ports of the signal device corresponding to each site to the ports of the switch corresponding to the site; The second connection module is used to connect the ports of the switches corresponding to the various sites in series communication to form a ring network; A fault diagnosis module is used to perform fault diagnosis on the signal device or the switch corresponding to the port based on the fault reported by the network management system for the port when communication interruption occurs, wherein the network management system is communicatively connected to the port of each signal device and is communicatively connected to the port of each switch.

[0012] According to a DCS wired network communication link fault diagnosis device provided by the present invention, the fault diagnosis module is also used to locate the fault based on the traffic of the switch port when communication interruption occurs and the network management system does not report the fault for the port.

[0013] The present invention also provides an electronic device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the DCS wired network communication link fault diagnosis method described above is implemented.

[0014] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the DCS wired network communication link fault diagnosis method as described in any one of the above is implemented.

[0015] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the DCS wired network communication link fault diagnosis method as described above is implemented.

[0016] The present invention provides a DCS wired network communication link fault diagnosis method and device, which determines the signal equipment and switch corresponding to each site; respectively connects the ports of the signal equipment corresponding to each site to the ports of the switch corresponding to the site; connects the ports of the switch corresponding to each site in series to form a ring network; when communication interruption occurs, based on the fault reported by the network management system for the port, performs fault diagnosis on the signal equipment or the switch corresponding to the port, wherein the network management system is connected to the port of each signal equipment and is connected to the port of each switch. By associating the DCS system with the signal equipment, the accuracy of fault diagnosis is improved, and a more detailed troubleshooting method is provided for communication interruption faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a flow chart of a DCS wired network communication link fault diagnosis method provided by the present invention.

[0019] Figure 2 It is a schematic diagram of the switch ring network connection relationship provided by the present invention.

[0020] Figure 3 It is a schematic diagram of the switch port connection relationship provided by the present invention.

[0021] Figure 4 The present invention is a schematic diagram of the structure of a DCS wired network communication link fault diagnosis device.

[0022] Figure 5 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Figure 1 FIG. 1 is a flow chart of a DCS wired network communication link fault diagnosis method provided by the present invention, such as Figure 1 As shown, the method includes the following steps 101 to 104.

[0025] Step 101: Determine the signal equipment and switches corresponding to each site.

[0026] Specifically, see Figure 2 , Figure 2 is a schematic diagram of the switch ring network connection relationship provided by the present invention, Figure 2 The figure shows the concentrated setting points of various signal equipment on a rail transit line, also known as stations, including stations such as Fanhua Avenue Station and University Town North Station, as well as non-stations such as Feicui Lake Parking Lot, Modian Depot, Maintenance Center, and Control Center. Each station is equipped with signal equipment, such as depot signal control equipment (including ATS extensions, depot terminals, interlocking equipment, etc.) and other general signal equipment (including central control equipment, signal machines, etc.).

[0027] Each of the above sites is equipped with at least one switch, which can be either an industrial Ethernet switch or a traditional Ethernet switch. The switches used at each site are Layer 2 or Layer 3 Ethernet switch devices. The rail transit system needs to achieve network isolation between different signal devices, so the industrial switches used support functions such as Virtual Local Area Network (VLAN) and Access Control List (ACL) to ensure secure isolation and data security between signal devices, which helps prevent unauthorized access and data leakage and ensure the safe operation of the system.

[0028] Step 102: The ports of the signaling devices corresponding to the respective sites are communicatively connected to the ports of the switches corresponding to the sites.

[0029] In some embodiments, the signal equipment corresponding to each site is connected to the data service port of the switch corresponding to the site through a Category 6 standard shielded twisted pair Ethernet cable. Figure 3 , Figure 3 is a schematic diagram of the switch port connection relationship provided by the present invention. Figure 3 Take the RS-30ATS switch B shown above as an example. The P5-P12 ports of the switch are all ATS ports for connecting to the ATS network. The P5 and P6 ports are used to connect to the local control workstation, which is the signal equipment of the site corresponding to the switch. The P8 port is used to connect to the intrusion prevention system, which is used to combine its own antivirus software to ensure the security of the ATS network.

[0030] Step 103: Connect the ports of the switches corresponding to the various sites in series to form a ring network.

[0031] In some embodiments, step 103 can be specifically implemented by connecting the ports of the switches corresponding to each site in series through optical cables, and the connection method between the ports of the switches corresponding to each site is a combination of multiple jump connection channels and multiple adjacent connection channels to form the ring network.

[0032] The multi-segment jump connection channel is used to connect the ports of the switches corresponding to the non-adjacent sites in the ring network, and the multi-segment adjacent connection channel is used to connect the ports of the switches corresponding to the adjacent sites in the ring network.

[0033] Specifically, a certain station of the line is used as the starting station of the first jump-connection channel, and the terminal station of the first jump-connection channel is determined within the length limit of the first jump-connection channel in the direction of the end station of the line, and then the terminal station of the first jump-connection channel is used as the starting station of the second jump-connection channel, and the second jump-connection channel range is continued to be divided in the direction of the end station, and the terminal station of the second jump-connection channel is determined within the length limit of the second jump-connection channel, and the terminal station of the second jump-connection channel is used as the starting station of the next jump-connection channel, and so on, until the terminal station of the jump-connection channel is the end station of the entire line. Then, the switches of the starting station and the terminal station of each jump-connection channel are connected by jump-connection channels, and the switches of adjacent stations are connected in sequence by adjacent channels.

[0034] by Figure 2 Taking the ring network shown in as an example, Figure 2 Safety network A and safety network B are connected by adjacent channels between the switches at site 04 and site 11, and are connected by jump channels between other sites; ATS network A and ATS network B are connected by jump channels between the switches at Modian Depot site and Xiangcheng Road site, and are connected by adjacent channels between other sites; maintenance network A is connected by adjacent channels between the switches at site 04 and site 11, and between the switches corresponding to site 32 and site occ, and is connected by jump channels between other sites. It should be noted that the maximum length of the jump channel should not exceed the minimum length of the repeater required by the preset track signal data network.

[0035] by Figure 2 Taking the ring network line of the maintenance network A shown as an example, take site 04 as the starting site of the first jump-connecting channel, and determine the terminal site 07 of the first jump-connecting channel within the length limit of the first jump-connecting channel in the direction of the terminal site of the line. Then, use site 07, the terminal site of the first jump-connecting channel, as the starting site of the second jump-connecting channel, and continue to divide the range of the second jump-connecting channel in the direction of the terminal site. Determine the terminal site of the second jump-connecting channel, the Emerald Lake Parking Lot, within the length limit of the second jump-connecting channel. Use the terminal site of the second jump-connecting channel, the Emerald Lake Parking Lot, as the starting site of the next jump-connecting channel, and so on, until the terminal site of the jump-connecting channel is site 11, the terminal site of the entire line.

[0036] In some embodiments, there is at least one communication breakpoint in the ring network. To avoid path duplication and network congestion, it is necessary to set a communication breakpoint in the ring network, and the communication breakpoint can be set by using Link State Protocol, Route Poisoning, Loop Avoidance Protocol, and Path Recording.

[0037] Step 104: When communication interruption occurs, based on the fault reported by the network management system for the port, fault diagnosis is performed on the signal device or the switch corresponding to the port, wherein the network management system is communicatively connected to the port of each signal device and is communicatively connected to the port of each switch.

[0038] In some embodiments, the network management system is responsible for monitoring the overall status of the DCS network, including the working status of the signal equipment. It can collect various data of the signal equipment in real time, and analyze and process these data to timely discover and solve problems. In addition, the network management system can also remotely control the signal equipment, such as adjusting the status of the signal machine, or changing the mode of train operation. The signal system and the network management system are connected through a specially designed port to achieve communication and data exchange between the two. This port can include two parts: a hardware interface and a software interface. The hardware interface is usually used to achieve the physical connection between the signal equipment and the network management equipment, while the software interface is used to achieve data transmission and processing.

[0039] For example, see Figure 3 The MSP30 security network switch A below, the P13-P16 ports of the switch are used to connect to the network management system.

[0040] In some embodiments, since the network management system is communicatively connected to the port of each switch and to the port of each signal device, when a signal device or switch fails, the network management system can quickly locate the fault point based on the port, issue an alarm for the fault of the port, and thereby perform fault diagnosis on the signal device or switch corresponding to the port.

[0041] In other embodiments, when communication interruption occurs, the network management system does not report a fault for the port, and the fault location is performed based on the traffic of the switch port.

[0042] Specifically, if the network management system does not report a fault in the signal device or switch, but a communication fault occurs in the ring network, it is considered that a fault has occurred in the path between the signal device and the switch, or in the path between the switches. At this time, the fault point can be located by observing the traffic conditions of the switch port, that is, by checking the input and output traffic counts (InUti and OutUti) of the port to determine whether there is a data storm. If these two counts continue to increase, it indicates that there is a fault in the loop related to the port.

[0043] In addition, you can also check the Address Resolution Protocol (ARP) table on the switch and whether there are a large number of ARP request packets to determine whether there is an ARP flooding problem, thereby locating the corresponding port fault of the switch.

[0044] The DCS wired network communication link fault diagnosis device provided by the present invention is described below. The DCS wired network communication link fault diagnosis device described below and the DCS wired network communication link fault diagnosis method described above can be referred to each other.

[0045] See also Figure 4 , Figure 4 It is a structural schematic diagram of a DCS wired network communication link fault diagnosis device provided by the present invention, Figure 4 The DCS wired network communication link fault diagnosis device 400 shown includes a determination module 401, a first connection module 402, a second connection module 403 and a fault diagnosis module 404, wherein the determination module 401 is used to determine the signal equipment and switches corresponding to each site; the first connection module 402 is used to communicatively connect the ports of the signal equipment corresponding to each site with the ports of the switch corresponding to the site respectively; the second connection module 403 is used to communicatively connect the ports of the switch corresponding to each site in series to form a ring network; the fault diagnosis module 404 is used to perform fault diagnosis on the signal equipment or the switch corresponding to the port based on the fault reported by the network management system for the port when communication interruption occurs, wherein the network management system is communicatively connected to the port of each signal equipment and to the port of each switch.

[0046] In some embodiments, the second connection module 403 is also used to connect the ports of the switches corresponding to each site in series through optical cables, and the connection method between the ports of the switches corresponding to each site is a combination of multiple jump connection channels and multiple adjacent connection channels to form the ring network.

[0047] In some embodiments, the fault diagnosis module 404 is further configured to locate the fault based on the traffic of the switch port when communication interruption occurs and the network management system does not report a fault for the port.

[0048] Figure 5 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 5 As shown, the electronic device may include: a processor 510, a communications interface 520, a memory 530 and a communication bus 540, wherein the processor 510, the communications interface 520 and the memory 530 communicate with each other through the communication bus 540. The processor 510 may call the logic instructions in the memory 530 to execute the DCS wired network communication link fault diagnosis method, which includes: determining the signal equipment and switches corresponding to each site; connecting the ports of the signal equipment corresponding to each site to the ports of the switches corresponding to the site; connecting the ports of the switches corresponding to each site in series to form a ring network; when communication interruption occurs, based on the fault reported by the network management system for the port, diagnosing the fault of the signal equipment or the switch corresponding to the port, wherein the network management system is connected to the ports of each signal equipment and connected to the ports of each switch.

[0049] In addition, the logic instructions in the above-mentioned memory 530 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0050] On the other hand, the present invention also provides a computer program product, which includes a computer program, and the computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the DCS wired network communication link fault diagnosis method provided by the above methods, the method including: determining the signal equipment and switches corresponding to each site; respectively communicating and connecting the ports of the signal equipment corresponding to each site with the ports of the switch corresponding to the site; communicating and connecting the ports of the switch corresponding to each site in series to form a ring network; when communication interruption occurs, based on the fault reported by the network management system for the port, performing fault diagnosis on the signal equipment or the switch corresponding to the port, wherein the network management system is communicated and connected to the port of each of the signal equipment, and is communicated and connected to the port of each of the switches.

[0051] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the DCS wired network communication link fault diagnosis method provided by the above-mentioned methods, the method comprising: determining the signal equipment and switches corresponding to each site; communicatively connecting the ports of the signal equipment corresponding to each site to the ports of the switch corresponding to the site respectively; communicatively connecting the ports of the switch corresponding to each site in series to form a ring network; when communication interruption occurs, based on the fault reported by the network management system for the port, performing fault diagnosis on the signal equipment or the switch corresponding to the port, wherein the network management system is communicatively connected to the port of each of the signal equipment, and is communicatively connected to the port of each of the switches.

[0052] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0053] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A DCS wired network communication link fault diagnosis method, characterized in that: include: Determine the signal equipment and switches corresponding to each site; Connecting the ports of the signal device corresponding to each site to the ports of the switch corresponding to the site; The ports of the switches corresponding to each site are connected in series to form a ring network; When communication interruption occurs, based on the fault reported by the network management system for the port, fault diagnosis is performed on the signal device or the switch corresponding to the port, wherein the network management system is communicatively connected to the port of each signal device and is communicatively connected to the port of each switch.

2. The DCS wired network communication link fault diagnosis method according to claim 1, characterized in that: The ports of the switches corresponding to the respective sites are connected in series to form a ring network, including: The ports of the switches corresponding to the various sites are connected in series through optical cables, and the connection mode between the ports of the switches corresponding to the various sites is a combination of multiple jump connection channels and multiple adjacent connection channels to form the ring network.

3. The DCS wired network communication link fault diagnosis method according to claim 2, characterized in that: The multi-segment jump connection channel is used to connect the ports of the switches corresponding to the non-adjacent sites in the ring network, and the multi-segment adjacent connection channel is used to connect the ports of the switches corresponding to the adjacent sites in the ring network.

4. The DCS wired network communication link fault diagnosis method according to claim 1, characterized in that: The method further comprises: When communication interruption occurs, the network management system does not report a fault for the port, and the fault location is performed based on the traffic of the switch port.

5. The DCS wired network communication link fault diagnosis method according to claim 1, characterized in that: There is at least one communication breakpoint in the ring network.

6. A DCS wired network communication link fault diagnosis device, characterized in that: include: A determination module, used to determine the signal equipment and switches corresponding to each site; A first connection module, used to connect the ports of the signal device corresponding to each site to the ports of the switch corresponding to the site; The second connection module is used to connect the ports of the switches corresponding to the various sites in series communication to form a ring network; A fault diagnosis module is used to perform fault diagnosis on the signal device or the switch corresponding to the port based on the fault reported by the network management system for the port when communication interruption occurs, wherein the network management system is communicatively connected to the port of each signal device and is communicatively connected to the port of each switch.

7. The DCS wired network communication link fault diagnosis device according to claim 6, characterized in that: The fault diagnosis module is also used to locate the fault based on the traffic of the switch port when communication interruption occurs and the network management system does not report the fault for the port.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the DCS wired network communication link fault diagnosis method as described in any one of claims 1 to 5 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the DCS wired network communication link fault diagnosis method as claimed in any one of claims 1 to 5 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the DCS wired network communication link fault diagnosis method as claimed in any one of claims 1 to 5 is implemented.

Images