The software failure of the industrial Ethernet switch refers to the failure of the system and its configuration. When it is found that there is a problem in the communication of the industrial Ethernet switch, and it is suspected that there is a problem with the industrial switch, how should we troubleshoot it? Next, let's follow the editor of Feichang Technology to take a look!
(1) System error:
Industrial Ethernet switch system is a combination of hardware and software. There is a refreshable read-only memory inside the industrial Ethernet switch, which saves the software system necessary for this industrial Ethernet switch. This kind of error is also the same as our common Windows and Linux. Due to the design at the time, there are some loopholes. When the conditions are right, it will cause the industrial Ethernet switch to be fully loaded, packet loss, and error packets. Therefore, the industrial Ethernet switch system provides methods such as Web and TFTP to download and update the system. Of course, errors may also occur when upgrading the system.
For such problems, we need to develop the habit of frequently browsing the website of the equipment manufacturer. If there is a new system launch or a new patch, please update it in time.
(2) Improper configuration:
Beginners are not familiar with industrial Ethernet switches, or because of the different configurations of various industrial Ethernet switches, administrators often make configuration errors when configuring industrial Ethernet switches. For example, the incorrect VLAN division leads to the network failure, the port is closed by mistake, the mode configuration of the industrial Ethernet switch and the network card do not match, and so on. This type of failure is sometimes difficult to find and requires a certain amount of experience. If you cannot ensure that there is a problem with the user's configuration, please restore the factory default configuration first, and then configure it step by step. It is best to read the manual before configuring, which is also one of the habits that the network administrator should develop. Each industrial Ethernet switch has a detailed installation manual and user manual, and each type of module has a detailed explanation. Since many manuals of industrial Ethernet switches are written in English, users with poor English can consult the supplier’s engineers before making specific configurations.
(3) Lost password:
This may have been experienced by every administrator. Once you forget the password, you can recover or reset the system password through certain steps. Some are relatively simple, just press a button on the industrial Ethernet switch. And some need to pass certain steps to solve.
This type of situation generally occurs when data is lost due to human forgetting or industrial Ethernet switch failure.
(4) External factors:
Due to the existence of viruses or hacker attacks, it is possible that a host sends a large number of data packets that do not meet the encapsulation rules to the connected port, causing the industrial Ethernet switch processor to be too busy, making the data packets too late to forward, and causing buffers Overflow causes packet loss. There is also a broadcast storm, which not only consumes a lot of network bandwidth, but also consumes a lot of CPU processing time. If the network is occupied by a large number of broadcast data packets for a long time, normal point-to-point communication cannot be carried out normally, and the network speed will slow down or be paralyzed.
A network card or a port failure may cause a broadcast storm. Since the industrial Ethernet switch can only divide the conflict domain, but not the broadcast domain (without dividing the VLAN), when the number of broadcast packets accounts for 30% of the total communication, the transmission efficiency of the network will be significantly reduced .
Generally speaking, software faults should be more difficult to find than hardware faults. When solving the problem, it may not be necessary to spend too much money, but it takes more time. It is best to develop the habit of logging in your daily work. Whenever a failure occurs, we should do a good job in time to record the failure phenomenon, the failure analysis process, the failure solution, and the failure classification summary to accumulate our own experience. For example, sometimes during the configuration, due to various reasons, there was no impact on the network or no problems were found at the time, but the problems may gradually appear after a few days. If there is a log record, you can think of whether there is an error in the configuration of the previous few days. Since this point is often overlooked, thinking that there is a problem in other areas, the problem is found only after many detours. Therefore, it is necessary to record logs and maintain information.
Well, the above content is the detailed introduction of Feichang Technology on the software failure of the industrial Ethernet switch, I hope it can be helpful to everyone! Feichang Technology has long been committed to providing customers with optical transceivers, telephone optical transceivers, armed police optical transceivers, smart rock projects, optical fiber transceivers, industrial Ethernet switches, protocol converters, serial servers and other industrial network communication products. It has become a leader in the domestic industrial communication field. Brand, welcome to come to understand and communicate.
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