Fault isolation method of switch

Abstract

The invention relates to the technical field of switches, and provides a fault isolation method for a switch, which comprises the following steps of: 1, when a power supply of the switch is started, preferentially starting a circuit to ensure that current is stable when equipment is started, and preventing instant large current from damaging the equipment; step 2, in the operation of the switch, real-time supervision is carried out from two aspects of hardware and software, a supervision report is generated, the supervision modes are offline supervision and network online supervision, and an abnormal signal receiving unit corresponding to a fault solution mode is arranged; by adopting the intrinsically safe DCDC circuit and the intrinsically safe secondary protection circuit, the power supply can be cut off in time when voltage fluctuates or circuit faults occur, equipment damage and safety accidents are avoided, and the power supply is particularly suitable for complex and severe environments such as mines and supports a wide-range power supply input mode, so that the power supply has power supply redundancy and over-voltage and over-current protection functions.

Description

Technical Field

[0001] The present invention relates to the technical field of switches, and in particular to a method for isolating faults of switches. Background Art

[0002] With the development of computer and Internet technology, switches, as a network device that provides electrical signal paths for network nodes, have also been rapidly popularized. Ethernet switches have developed rapidly, and low-, medium-, and high-end products suitable for home, enterprise data networks, operating backbone networks, etc. have emerged in an endless stream. Mining mines are equipped with many monitoring systems for underground production operations, which are connected through switches.

[0003] At present, hardware failures mainly caused by lines account for the highest proportion of switch failures, which requires immediate processing once a failure occurs. At the same time, when a failure occurs, the data transmission speed is slow, resulting in delayed isolation of abnormal functional areas, which makes it impossible to stop the failure as soon as possible, thus expanding the loss. Therefore, a method for isolating switch failures is needed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method for isolating faults of a switch, which solves the problem that hardware faults mainly in lines account for the highest proportion in switch fault situations, so that once a fault occurs, it needs to be handled immediately. At the same time, when a fault occurs, the data transmission speed is slow, resulting in untimely isolation of the abnormal functional area, causing the fault to be unable to be stopped as soon as possible, thereby expanding the loss.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for isolating faults of a switch, comprising the following steps:

[0006] Step 1: When starting the power of the switch, give priority to the soft start circuit to ensure that the current of the device is stable when starting, to prevent the instantaneous high current from damaging the device;

[0007] Step 2: During the operation of the switch, real-time supervision is performed from both hardware and software aspects, and a supervision report is generated. The supervision method is offline supervision and network online supervision, and an abnormal signal receiving unit corresponding to the fault resolution method is set;

[0008] Step 3: Based on the supervision of the switch in step 2, external electromagnetic interference supervision is performed simultaneously, and an electromagnetic interference threshold is set, and a relative level of electromagnetic interference protection is enabled corresponding to the threshold;

[0009] Step 4: When an abnormal signal appears in the supervision of hardware and software, it is regarded as a fault. The abnormal signal is paired with the abnormal signal receiving unit, and the command signal data is quickly transmitted to immediately start the solution to the hardware fault and software fault, and quickly stop the function of the signal source and isolate it.

[0010] Preferably, the slow start circuit in step 1 adopts an intrinsically safe DCDC circuit to provide a stable DC voltage and adapt to voltage fluctuations in the mine environment.

[0011] Preferably, the software supervision in step 2 will be supervised by IPMI, and IPMI standard instructions will periodically send commands to the BMC as the core of the switch, and the BMC that receives the command will record the event information in the system event log and maintain the sensor data record.

[0012] Preferably, the content of the IPMI supervision includes health information related to the switch, such as the voltage, temperature, and fan operation status of the server.

[0013] Preferably, the solution steps for the software failure in step 4 are:

[0014] S1. Prioritize data backup and temporarily stop the function at the source of the fault;

[0015] S2. Perform fault detection on the switch through IPMI commands, determine the fault type based on the detection results, and perform data repair based on the fault type;

[0016] S3. When accessing the system remotely online, BMC changes the direction of information transmitted to the local serial port on the LAN, providing an independent remote viewing method for starting and operating the system loader or emergency management console to monitor health information and diagnose and repair faults.

[0017] Preferably, when the hardware failure in step 4 is a line failure, an intrinsically safe secondary protection circuit is used to provide secondary protection when a circuit failure occurs, and the power supply is quickly cut off to ensure the safety of the equipment.

[0018] Preferably, when the source of the hardware failure in step 4 is a mine factor, a switch with intrinsically safe design utilizes protection features such as explosion-proof, dust-proof, and waterproof to adapt to the complex environment of the mine and reduce the probability of failure.

[0019] Preferably, when the source of the hardware failure in step 4 is high temperature, it is solved by a heat dissipation design that combines active heat dissipation and passive heat dissipation.

[0020] Preferably, the power supply in step one supports a wide range of power input and has power redundancy and overvoltage and overcurrent protection functions to ensure stable operation of the equipment.

[0021] Preferably, the transmission speed of the command signal data transmitted in step 4 is supported by a 10G three-layer switching circuit, achieving high-speed data exchange and forwarding and supporting a three-layer network protocol.

[0022] The present invention provides a method for isolating faults of a switch, which has the following beneficial effects:

[0023] 1. The present invention adopts an intrinsically safe DCDC circuit and an intrinsically safe secondary protection circuit to ensure that the power supply can be cut off in time when the voltage fluctuates or the circuit fails, thereby avoiding equipment damage and safety accidents. It is particularly suitable for complex and harsh environments such as mines, supports a wide range of power input methods, and enables the power supply to have power redundancy and overvoltage and overcurrent protection functions.

[0024] 2. The present invention monitors hardware and software offline and online in real time, and quickly starts a preset fault solution when an abnormal signal is detected. Through the high-speed data transmission speed supported by the 10G three-layer switching circuit, the method can quickly locate and isolate the source of the fault, prevent the fault from spreading, and ensure the stable operation of the switch system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a flow chart of a method for isolating faults of a switch. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0027] Example:

[0028] Please see attached Figure 1 The embodiment of the present invention provides a method for isolating a fault of a switch, which is characterized by comprising the following steps:

[0029] Step 1: When starting the power of the switch, give priority to the slow start circuit to ensure that the current of the equipment is stable when starting, to prevent the instantaneous large current from damaging the equipment. The slow start circuit adopts the intrinsically safe DCDC circuit to provide a stable DC voltage to adapt to the voltage fluctuation of the mine environment. The power supply supports a wide range of power input, has power redundancy and overvoltage and overcurrent protection functions to ensure stable operation of the equipment;

[0030] Step 2: During the operation of the switch, real-time supervision is carried out from both hardware and software aspects. Software supervision will be carried out using IPMI. The content of IPMI supervision includes health information related to the switch, such as the voltage, temperature, and fan operation status of the server. IPMI standard instructions send commands to the BMC, which is the core of the switch, at regular intervals. The BMC that receives the command records the event information in the system event log, maintains the sensor data record, and generates a supervision report. The supervision method is offline supervision and network online supervision, and an abnormal signal receiving unit corresponding to the fault resolution method is set;

[0031] Step 3: Based on the supervision of the switch in step 2, external electromagnetic interference supervision is performed simultaneously, and an electromagnetic interference threshold is set, and a relative level of electromagnetic interference protection is enabled corresponding to the threshold;

[0032] Step 4: When an abnormal signal appears in the supervision of hardware and software, it is regarded as a fault. The abnormal signal is paired with the abnormal signal receiving unit, and the command signal data is transmitted quickly. The transmission speed is supported by the 10G three-layer switching circuit to achieve high-speed data exchange and forwarding. It supports the three-layer network protocol to immediately start the solution to hardware and software faults, and quickly stop the function of the signal source for isolation.

[0033] The steps to solve the software failure are:

[0034] S1. Prioritize data backup and temporarily stop the function at the source of the fault;

[0035] S2. Perform fault detection on the switch through IPMI commands, determine the fault type based on the detection results, and perform data repair based on the fault type;

[0036] S3. When accessing the system remotely online, BMC changes the direction of information transmitted to the local serial port on the LAN, providing an independent remote viewing method for starting and operating the system loader or emergency management console to monitor health information and diagnose and repair faults.

[0037] Among them, BCM53003 is the core of the 10G switch configuration module. When the switch starts, BCM53003 first loads the CFE file through NORFlash, then loads the kernel and file system, and configures the switch through the PCIE interface.

[0038] The Gigabit PHY uses BCM5461 and BCM5481 respectively, which can provide 2 Gigabit network ports. The management unit configures the switch board through this network port. BCM5461 and BCM5481 fully integrate 10BASE-T100, BASE-TX1000, BASE-T Gigabit Ethernet transceivers. There are also GMII, RGMII, RTB I and MII MAC interface options. BCM5461 and BCM5481 also have low power consumption: 0.13μCMOS, less than 700mW per port, with advanced power consumption management. The memory uses 128M DDR2 memory that can be supported by BCM53003.

[0039] When the hardware failure is a line failure, the intrinsically safe secondary protection circuit is used to provide secondary protection when a circuit failure occurs, quickly cutting off the power supply to ensure equipment safety.

[0040] When the source of hardware failure is due to mine factors, the switch with intrinsically safe design uses explosion-proof, dust-proof, waterproof and other protection features to adapt to the complex environment of the mine and reduce the probability of failure.

[0041] When the source of hardware failure is high temperature, it is solved by a heat dissipation design that combines active and passive heat dissipation.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for isolating a switch fault, characterized in that: The following steps are involved: Step 1: When starting the power of the switch, give priority to the soft start circuit to ensure that the current of the device is stable when starting, to prevent the instantaneous high current from damaging the device; Step 2: During the operation of the switch, real-time supervision is performed from both hardware and software aspects, and a supervision report is generated. The supervision method is offline supervision and network online supervision, and an abnormal signal receiving unit corresponding to the fault resolution method is set; Step 3: Based on the supervision of the switch in step 2, external electromagnetic interference supervision is performed simultaneously, and an electromagnetic interference threshold is set, and a relative level of electromagnetic interference protection is enabled corresponding to the threshold; Step 4: When an abnormal signal appears in the supervision of hardware and software, it is regarded as a fault. The abnormal signal is paired with the abnormal signal receiving unit, and the command signal data is quickly transmitted to immediately start the solution to the hardware fault and software fault, and quickly stop the function of the signal source and isolate it.

2. A method for isolating a switch fault according to claim 1, characterized in that: The slow start circuit in step 1 adopts an intrinsically safe DCDC circuit to provide a stable DC voltage to adapt to voltage fluctuations in the mine environment.

3. A method for isolating faults of a switch according to claim 1, characterized in that: The software supervision in step 2 will be supervised by IPMI. The IPMI standard instruction sends commands to the BMC as the core of the switch at regular intervals. The BMC that receives the command records the event information in the system event log and maintains the sensor data record.

4. A method for isolating faults of a switch according to claim 3, characterized in that: The IPMI monitoring content includes the server's voltage, temperature, fan operating status and other health information related to the switch.

5. A method for isolating faults of a switch according to claim 4, characterized in that: The solution steps for the software failure in step 4 are as follows: S1. Prioritize data backup and temporarily stop the function at the source of the fault; S2. Perform fault detection on the switch through IPMI commands, determine the fault type based on the detection results, and perform data repair based on the fault type; S3. When accessing the system remotely online, BMC changes the direction of information transmitted to the local serial port on the LAN, providing an independent remote viewing method for starting and operating the system loader or emergency management console to monitor health information and diagnose and repair faults.

6. A method for isolating faults of a switch according to claim 1, characterized in that: When the hardware failure in step 4 is a line failure, the intrinsically safe secondary protection circuit is used to provide secondary protection when a circuit failure occurs, and the power supply is quickly cut off to ensure the safety of the equipment.

7. A method for isolating faults of a switch according to claim 1, characterized in that: When the source of the hardware failure in step 4 is a mine factor, the switch with intrinsically safe design utilizes protection features such as explosion-proof, dust-proof, and waterproof to adapt to the complex environment of the mine and reduce the probability of failure.

8. A method for isolating faults of a switch according to claim 1, characterized in that: When the source of the hardware failure in step 4 is high temperature, it is solved by a heat dissipation design that combines active heat dissipation and passive heat dissipation.

9. A method for isolating faults of a switch according to claim 1, characterized in that: The power supply in step 1 supports a wide range of power input and has power redundancy and overvoltage and overcurrent protection functions to ensure stable operation of the equipment.

10. A method for isolating faults of a switch according to claim 1, characterized in that: The transmission speed of the command signal data transmitted in step 4 is supported by the 10G three-layer switching circuit, realizing high-speed data exchange and forwarding and supporting the three-layer network protocol.

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