Switch troubleshooting method

There are many kinds of faults in the switch, and different faults have different manifestations. In the failure analysis, it is necessary to use the exclusion methods (such as the exclusion, comparison, and replacement methods) through various phenomena to find out the fault and eliminate it in time.

(1) Exclusion method:

When we face the phenomenon of failure and analyze the problem, we have inadvertently learned to use the exclusion method to determine the direction of the failure. This method refers to enumerating all possible faults as comprehensively as possible based on the observed fault phenomena, and then analyzing and eliminating them one by one. When excluding, follow the principle of being simple to complex and improve efficiency. This method can be used to cope with a variety of failures, but maintenance personnel need to have a strong logical thinking and a thorough understanding of the switch knowledge.

(2) Contrast method:

The so-called comparison method is to use the existing, the same type of switch that can operate normally as a reference object, and compare with the faulty switch to find the fault point. This method is simple and effective, especially for system configuration faults. You can find the different points of the configuration by simply comparing them, but sometimes it is not easy to find a switch with the same model and the same configuration.

(3) Replacement method:

This is a common method we use and a more frequent method of using it in a maintenance computer. Alternate is the method of using a normal switch component to replace a potentially faulty component to find the point of failure. It is mainly used for the diagnosis of hardware failures, but it should be noted that the replacement parts must be the same brand, the same type of similar switches. (Author: Shenzhen Tian Bo Communication Equipment Co., Ltd.)