Huawei 10 Gigabit Optical Switch Connection

Huawei 10 Gigabit switches can be connected using SFP+ ports with DAC, AOC, or optical modules, depending on distance and network requirements.

Port Types and Connection Options

Huawei 10 Gigabit switches, such as the S6720S-26Q-LI-24S-AC, typically feature downlink 10GE SFP+ ports for server connections and uplink 40GE QSFP+ ports for higher bandwidth aggregation. The 10GE SFP+ ports can connect to servers or other switches using: 10G SFP+ DAC (Direct Attach Copper) cables: Suitable for short distances up to ~7 meters. 10G SFP+ AOC (Active Optical Cable): Supports distances up to 300 meters, with customizable lengths.

10G SFP+ multimode optical modules with OM3 fiber: Also supports up to 300 meters. 10G SFP+ single-mode optical modules: Used for long-distance connections, capable of reaching up to 100 kilometers. For single-fiber bidirectional (BiDi) modules, they must be used in pairs with complementary wavelengths, e.g., SFP-10G-BXD1 with SFP-10G-BXU1.

Short-

Distance Connections

For connections under 30 meters, CAT6A copper cables can be used between SFP+ ports if using compatible transceivers.

DA

C cables are preferred for very short distances due to simplicity and cost-effectiveness.

Long-

Distance Connections

For distances exceeding 300 meters, single-mode optical modules are recommended. Huawei also offers CWDM, DWDM, and BiDi modules for ultra-long-distance or telecom-grade applications, typically used in backbone or metropolitan networks.

Compatibility and Certification

Only Huawei-certified optical or copper modules should be used to ensure reliability and service stability. Non-certified modules may cause link instability or service interruptions. Certification can be verified via the module label, elabel command, or vendor information in the switch interface.

Interoperability Notes10

Gbps optical modules are generally not directly compatible with Gigabit ports unless the module or port is configured to operate at 1Gbps. When connecting Huawei switches to servers with Intel 10G NICs, each NIC port is independent, allowing flexible expansion without affecting other ports.

Summary

To connect Huawei 10 Gigabit switches effectively: Identify the port type (SFP+ or QSFP+). Choose the appropriate cabling or optical module based on distance: DAC for