Common Faults and Solutions of several typical vswitches

Many components in a computer are working at the same time as the computer is running. network devices such as switches and routers are still working without power outages, no matter how good the performance of a vswitch is and how long it takes to work, it is inevitable that no fault will occur. Despite the diversity of vswitch faults, there are also several such failures. The following describes the typical faults of vswitches and their solutions.

1. Port faults

Fault: the entire network operates normally, but some machines cannot communicate normally.

Fault Cause: This is the most common switch failure, if the fiber plug or RJ-45 port is dirty, may cause port pollution and cannot communicate properly. In addition, many people usually like live plugging connectors. Theoretically, it seems that there is nothing wrong with them, but in fact, this often increases the port failure rate accidentally. When carrying, they are not careful, it may also cause physical damage to the port. The size of the purchased crystal head is too large, and the port is easily damaged when the switch is inserted. In addition, if a section of twisted pair wires connected to a port is exposed to the outside, the connected switch port may be damaged if the cable is hit by lightning.

Solution: Generally, a port fault is caused by some port damages. First, check the faulty computer. After the fault of the computer connected to the port is ruled out, you can replace the connected port, to determine whether the port is a problem. If the problem can be solved after the port is changed, then determine the reason for the problem. After the power is off, use the alcohol cotton ball to clean the port. If the port is damaged, you can only change the port. In addition, whether it is fiber port or twisted pair RJ-45 port, in the plug-in connector must be careful, it is recommended that do not charge the operation when plugging.

2. circuit board faults

Fault: some computers often cannot access the server in a computer room.

Fault cause: the switch is generally composed of the main circuit board and the power supply circuit board, resulting in such a fault is generally due to problems in these two parts. The main causes for the failure of the circuit board are: the components on the circuit board are damaged or the substrate is poor, the hardware remark is not suitable, and the circuit section type is not suitable after the hardware is updated and due to compatibility issues.

Solution: First, check whether there is a problem with the main circuit board or power supply circuit board. First, check the power supply part and use hichina to conduct power-on measurement when removing the load of the main circuit board, check whether the measured indicators are normal. If not, use an AT Power Supply and enter the power to the main circuit board. The indicator on the front panel of the switch returns to the normal brightness and color, the normal mutual access between the computer connected to this switch indicates a problem with the power supply circuit board. If the above operation is invalid, the problem should occur on the main circuit board.

3. Power Supply Fault

Fault description: After the switch is enabled, the switch is not operating normally, and the POWER indicator on the panel is not on, and the fan does not rotate.

Fault cause: the fault is usually caused by unstable external power supply environment, aging of power supply lines, or power supply damage or fan stop due to lightning strikes, as a result, the switch cannot work normally. Other components in the switch may be damaged due to power supply.

Solution: it is easy to find and solve such problems. When such a fault occurs, first check the power supply system to see if the power outlet has current and whether the voltage is normal. If the power supply is normal, check whether the power cord is damaged or not. If the power cord is damaged, replace one. If the power cord is loose, plug it again.

If the problem persists, the problem should be caused by power supply of the switch or other components in the machine. The prevention method is also relatively simple. The first thing to do is to ensure the stability of the external power supply environment. This can be done by introducing an independent power line to provide an independent power supply, and add a voltage regulator to avoid instant high voltage or low voltage. If possible, we recommend that you configure the UPS system. The other thing is to take necessary lightning protection measures to prevent damage to the switch.

Connection cables and distribution frame jumpers, improper configuration, and system data problems also occur from time to time. In addition, board data errors may also affect the entire exchange board, and user data is incorrectly set, it will have an impact on a user. There are also problems with the switch software, and there are defects in the software program design ...... These are also important issues.

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