Summary of common problems and solutions of optical modules in use

As a more sensitive optical device, optical modules sometimes have problems in the use process. Here are some common problems and solutions in the use of optical modules. Let's learn together!

Problem 1: The optical port lamp does not light up after the two optical modules are interconnected

Cause 1: The parameters of the optical modules at both ends do not match, such as wavelength, rate and transmission distance.

Cause 2: The type of optical jumper used does not match the optical module.

Cause 3: The optical module is incompatible with the switch brand

Solution: First check whether the optical port is on, then check whether the optical module parameters (such as wavelength, rate and transmission distance) inserted by the devices at both ends match, and whether the optical module type (single mode/multi-mode) matches the jumper type, and then check whether the gateway is configured and VLAN is consistent.

Single mode optical modules need to be connected with single-mode OS2 jumpers, and multi-mode optical modules need to be connected with multi-mode OM3/OM2 and other multi-mode jumpers. If the switch brand is incompatible with the optical module, replace the optical module compatible with the switch brand.

Problem 2: The indicator of the A end optical module is on, but the indicator of the B end optical module is not on

Troubleshooting and solutions: If the optical fiber jumper corresponding to the optical module receiving port is normal, the problem lies in the optical fiber jumper of the sending port; If the indicator of the A-end optical module is on, but the indicator of the B-end optical module is not on.

The solution is to change the position of the optical fiber jumper at both ends. If the optical module indicator at the B end is on and the optical module indicator at the A end is not on, it indicates that there is a problem with one of the optical fiber jumpers. If the A-end optical module can receive the optical signal from the B-end optical module but the B-end optical module cannot receive the optical signal from the A-end optical module, it is certain that there is a problem with the A-end optical module or jumper.

Problem 3: The switch indicator is red after the optical module is inserted

Reasons and solutions: The main reason is that the optical module is incompatible. You can open the operation data and check the manufacturer information of the optical module. If it is incompatible with the switch brand, you can directly replace the optical module.

Problem 4: The interface alarm message appears after the optical module is inserted

Solution: Check whether the working parameters, interface information and receiving and sending of the optical module are normal, and then check the optical fiber jumper, or try to replace the optical fiber jumper and optical module. After the replacement of the optical module, observe the status of the warning lamp.

Problem 5: ISM monitors the fault alarm of the optical module, and the port corresponding to the optical module lights up red

Solution: First view the log information IP_ MAIN/event/event.txt file, there is an optical module fault alarm, and then check the IP address_ MAIN/Mseesages/Message_ xxx. Log information corresponding to the log time point. In addition, the alarm information and information description of optical module failure are shown in the following table. Note that if the alarm information is 0x00000110, the alarm causes are 0x00000100 and 0x00000010.