The switch supports 1000g single-mode optical modules

Yes, the switch can support 1000BASE-LX/LH SFP modules for single-mode fiber, provided the modules are certified for the switch.

Single-Mode Optical Module Compatibility

1000BASE-LX and 1000BASE-LH SFP modules are Gigabit Ethernet optical transceivers designed for long-distance transmission over single-mode fiber (SMF), typically supporting distances up to 10 km for LX and up to 40 km for LH, depending on fiber quality and link conditions . These modules operate at a 1310 nm wavelength, converting electrical signals from the switch into optical signals for fiber transmission and back at the receiving end .

Key Considerations

• Certification: Switches often require that optical modules be vendor-certified to ensure reliable operation. For example, Huawei switches only guarantee proper functionality with certified modules, and using non-certified modules may cause service instability or hardware issues . Certification can usually be verified via module labeling or switch commands.
• Distance and Fiber Type: While single-mode fiber allows long-distance links, multimode fiber may require mode-conditioning patch cables for distances beyond 300–550 meters .
• Module Standards: LX/LH modules comply with IEEE 802.3z standards, ensuring interoperability with other certified devices. LX is optimized for standard single-mode fiber up to 10 km, while LH can extend up to 40 km in practice .

Practical Deployment

1000BASE-LX/LH SFPs are commonly used for:

• Building-to-building links
• Campus backbone connections
• Enterprise networks requiring stable 1G connectivity over long distances When deploying, ensure the switch SFP ports support single-mode modules and that the modules are certified for the specific switch model to avoid compatibility issues . In summary, your switch can support 1000G single-mode optical modules like 1000BASE-LX/LH SFPs, but always verify vendor certification and fiber type compatibility for reliable operation.