How to adjust the optical power of a Huawei 40G optical module when it is too high

Setting Optical Power Alarm Thresholds

When the transmit or receive power of an optical module exceeds the alarm threshold, an alarm is generated, indicating that the optical module may be faulty. An optical module has default optical

Checking that the Optical Power Is Within the Normal Range

If the value of Rx Optical Power is less than the receiving sensitivity, adjust the link or replace the optical module or optical fiber at the remote end; if the value of Rx Optical Power is too high, add an optical

Optical Modules for Huawei S Series Switches

If the receive power is too high, the receive optical bore of the optical module may be damaged. To prevent such damage, reduce the transmit power of the optical module on the remote port or use

40Gbps QSFP+ Optical Modules

40Gbps QSFP+ Optical Modules QSFP-40G-LR4 QSFP-40G-SDLC-PAM QSFP-40G-SR-BD (02311FPA) QSFP-40G-eSR4 QSFP-40G-iSR4 QSFP-40G-LX4 QSFP-40G-ER4 QSFP-40G-LR4

Optical Module Solutions for Huawei S5700/S5720 Series Switches

This article summarizes several solutions for using optical modules with switches and common problems encountered during usage, along with specific solutions.

Checking the Optical Module

Use an optical power meter to test the optical power attenuation of each part of the link and fix the abnormal part. If the transmit optical power is too high or too low, change the optical module.

Checking the Working Modes

Check whether the optical module and fiber meet requirements. Use an optical power meter to measure the attenuation of each part of links and recover the problematic link.

ALM-3276800022 Indicates that optical module power abnormal

If so, run the transceiver diagnosis threshold rx-power command to change the receive power alarm threshold of the optical module or run the transceiver diagnosis threshold tx-power

Checking the Receive and Transmit Optical Power

In this case, install an optical attenuator on the remote optical module to reduce the transmit power. If the transmit optical power is low (Current TX Power has a smaller value than Default TX Power Low

How Do I Ensure that the Transmit and Receive Optical Power of an

Use a cotton swab to clean the bores, and then check whether the transmit optical power of the optical module is within the normal range. If not, contact Huawei technical support personnel. If

Checking TX / RX optical power for Huawei Switches and Routers

Here is an example on how to query or display optical power of an interface in a Huawei Router. This is tested using NetEngine40E Universal Service Router or NE40E running version 8.x OS.

Optical Power Management

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Troubleshooting for Optical Modules on Huawei Switch

When the transmit/receive power of the optical ports is too high, optical modules on the ports may be damaged. In this case, connect an attenuator to the optical modules.

Knowledge Base

In this case, install an optical attenuator on the remote optical module to reduce the transmit power. If the transmit optical power is low (Current TX Power has a smaller value than