Views: 0 Author: Site Editor Publish Time: 2023-04-12 Origin: Site
1. Network switches loaded DDM information content
Data diagnosis (DDM) is like a "doctor", which can confirm the "condition" of the optical module. It can confirm the operating status of the optical module, and it can also monitor whether the main parameters inside the light module in real time are normal. According to the comprehensive analysis of the alarm information of the inspection and receiving light power, working voltage, and reference point current, it can predict the parts of common faults, accurately locate problems, reduce common fault recovery time, and reduce losses.
The instructions of the network switch query DDM information content are different, and practical operations can be carried out according to the models you actually use.
Figure 1: Details of the SFP light module in CISCO network switch
In the figure, the SFP light module sends the laser power of -3.55DBM. The value is in the category of early warning information between 1DBM to -13.5DBM, and the data information is normal.
2. Eye map detection
The light module sends the laser power to indicate the content of the information of the light eye diagram. The following figure is the entire eye diagram detection process of the 100GQSFP28 light module.
