The failures of general industrial switches can be roughly divided into: soft performance failures and physical failures. Soft performance failures generally refer to problems in the R&D and design of industrial switches. Today, the editor of JHA Technology will tell you how to judge the physical failure of industrial switches? Let’s take a look!

The physical layer failure mainly refers to the hardware failure of the switch itself and the failure of the physical line connecting the switch.The security special industrial switch exchange is a general term for the technology of sending the information to be transmitted to the corresponding route that meets the requirements by manual or automatic equipment according to the needs of transmitting information at both ends of the communication.

1. Hardware failure

The hardware failures of the device itself generally include: interface or device hardware damage, interface Bootrom or VRP software version is incorrect or not compatible, the optical module interface type is incorrect, the user PC network card is faulty or the configuration is incorrect, etc. Generally, after one or some interfaces of industrial switches are broken, other interfaces will gradually break.

2. Physical circuit failure

The physical line faults connected to the switch generally include: physical damage to the network cable or optical fiber line itself, the network cable type is wrong (except for MDIMDI-X adaptive) or the fiber media converter connection is incorrect,the intermediate transmission equipment (photoelectric converter) is faulty or not working properly, and the maximum transmission length and maximum speed supported by the interface cable are beyond the scope of use.

In addition, the working rate, working mode, frame format negotiation and matching problems between device interfaces can also cause the phenomenon to manifest as a physical layer failure.

For the above problems, we can find the problem through some methods, such as:

a. Make a preliminary judgment with the aid of the status of the device interface indicator. The Line light is off to indicate that the line is not connected, and the light is on to indicate that the line is connected; the Active light is off to indicate that no data is being sent or received, and the light flashes to indicate that there is data to be sent or received.

b. Judge by viewing the output through the port display command. For example, display interface ethernet01.

c. Use the substitution method for judgment. Including lines, cables and optical fibers, boards, slots, complete machines, exchange line transceivers, etc.

d. Configure interface loopback on the industrial switch for judgment. Set the port for loopback test: loopback {external | internal }.

Well, the above content is how to judge the physical failure of industrial switch by Feichang Technology? A detailed introduction to this issue, I hope it can be helpful to everyone!