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What optical module does the Huawei 7900EX12 use

The Huawei 7900EX12 uses Huawei-certified SFP, SFP+, or QSFP optical modules depending on the interface speed, and only certified modules ensure reliable operation.

Compatible Module Types

The Huawei 7900EX12 switch supports a range of pluggable optical modules depending on the port type and speed: SFP (Small Form-factor Pluggable): Typically used for 1G connections over single-mode or multi-mode fiber. SFP+: Supports 10G connections, compatible with both single-mode and multi-mode fibers. QSFP/QSFP+: Used for 40G connections, often with MPO fiber connectors.

QSFP28: Supports 100G connections, compatible with 100GE interfaces. Modules are further classified by fiber type: Single-mode modules: Suitable for long-distance transmission with high bandwidth. Multi-mode modules: Suitable for short-distance, lower-cost connections.

Wavelengths commonly used include 850 nm, 1310 nm, and 1550 nm, and for advanced deployments, CWDM or DWDM modules may be used for wavelength division multiplexing applications.

Certification and Reliability

Huawei requires that only certified optical modules be used to ensure transmission reliability and service stability. Certified modules are labeled with "HUAWEI" and can be verified using commands such as display transceiver or display version on the switch. Using non-certified modules may lead to network instability and Huawei will not provide support for issues caused by uncertified modules.

Recommendation

For the Huawei 7900EX12: Identify the port type and speed (1G, 10G, 40G, 100G). Select a Huawei-certified optical module matching the port type and fiber type. Verify certification using the switch commands or by consulting Huawei technical support to ensure compatibility and reliability.

By following these guidelines, you can ensure that the 7900EX12 operates at optimal performance with fully supported optical modules.

What optical module does the Huawei 7900EX12 use

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Therefore, optical modules are also classified into single-mode and multimode modules to support different optical fibers. Single-mode optical modules are used with single-mode fibers.

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Technical note

This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.

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