How to use a Huawei 100Mbps optical module

To use a Huawei 100Mbps optical module, install it in the correct port, ensure proper fiber type and pairing, and verify link status using Huawei switch or router commands.Installation and PairingCheck Module Type: Huawei 100Mbps SFP modules, such as 100FX, are designed for Fast Ethernet (FE) ports and typically use LC connectors with 1310-nm multimode fiber (MMF) for short distances up to 2 km .BIDI Modules: If using BIDI (bidirectional) optical modules, they must be used in pairs with complementary wavelengths. For example, SFP-FE-LX-SM1310-BIDI must be paired with SFP-FE-LX-SM1550-BIDI .Orientation: Insert the module with the top side upward, ensuring the L-shaped notch aligns with the port. Do not insert upside down .Fiber Connection: Connect the appropriate single-mode or multimode fiber according to the module specifications. Avoid using optical splitters with single-mode modules unless the link budget allows .Verifying OperationCheck Interface Status: On a Huawei switch, run display interface to view the module type, link status, and traffic statistics. The link must show UP for normal operation .Interface Overview: Use display interface brief to list all interfaces and confirm the correct port number for the module .Troubleshooting: If the link is down, check fiber connections, module pairing, and ensure the correct fiber type is used. For advanced troubleshooting, you can monitor optical power levels on compatible routers to ensure TX/RX signals are within the optimal range .Best PracticesKeep dust plugs on unused modules to prevent contamination.Avoid bending fiber cables sharply to prevent signal loss.Reserve link budget margins when using splitters or long-distance fiber runs.Regularly monitor module status to detect early signs of degradation or faults. By following these steps, a Huawei 100Mbps optical module can be properly installed, paired, and monitored to ensure reliable network connectivity.