Connecting the 10G SFP+ port on Flint 4¶
Flint 4 (GL‑BE14000) comes with a 10G SFP+ port, which can be switched between WAN and LAN modes. This port is compatible with multiple types of SFP+ modules and cables for optical and copper Ethernet connections, meeting diverse networking demands including long-distance fiber access, conventional twisted-pair wiring, and advanced PON fiber termination.
Below is a detailed introduction to the three connection schemes for the SFP+ port on Flint 4 (GL-BE14000), covering application scenarios, connection topologies, advantages & disadvantages, precautions, and compatible models for reference only.
Solution 1. Optical Transceiver + Fiber Cable¶
1.1 Scenarios¶
This solution applies to long-distance, high-stability 10G Ethernet networking scenarios. It is mainly used for two scenarios:
- Connecting to ISP 10G pure fiber Ethernet uplinks for ultra-high-speed home and commercial broadband access;
- Deploying long-distance indoor and outdoor network interconnection, such as connecting Flint 4 to a remote 10G switch, cross-floor home network wiring, and small office backbone network deployment.
1.2 Topology¶
Flint 4 10G SFP+ port → Standard 10G SFP+ optical transceiver (SR/MR/LR) → Optical fiber cable → Remote 10G network switch / ISP fiber‑Ethernet terminal
1.3 Pros & Cons¶
The table below evaluates key performance and usability dimensions of the optical transceiver + fiber cable solution, with star ratings and detailed notes for reference:
| Metric | Star Rating | Remarks |
|---|---|---|
| Transmission Distance | ★★★★★ | Supports up to 300m (multi-mode) or 10km+ (single-mode), breaking copper cable distance limits, suitable for long-range networking. |
| Anti-Interference | ★★★★★ | Optical signal transmission is immune to electromagnetic interference, static electricity and crosstalk, ensuring stable operation in complex environments. |
| Energy Saving | ★★★★★ | Low power consumption and low heat generation; mature chip design supports long-term full-load stable operation without overheating risks. |
| Compatibility | ★★★★★ | Official fully supported, compliant with standard 10G Ethernet protocols, zero firmware adaptation risks. |
| Easy Deployment | ★★★☆☆ | Requires basic fiber docking specifications; improper operation may cause signal attenuation, slightly higher threshold than copper wiring. |
| Economy | ★★★☆☆ | Additional optical transceivers and fiber cables are required, with higher overall cost than traditional twisted-pair solutions. |
1.4 Precautions¶
-
Only standard 10G Ethernet optical transceivers are supported; PON-protocol optical modules are not applicable to this scheme.
-
Select matching single-mode/multi-mode optical modules and fiber cables according to the actual transmission distance to avoid network speed attenuation or link failure.
-
This scheme only supports ISP 10G Ethernet-over-fiber services, and cannot be directly connected to traditional GPON/XGS-PON residential fiber lines.
1.5 Compatible Models¶
The following are some standard optic transceivers that have been tested by GL.iNet and friendly users to be compatible with Flint 4, for reference only.
| Model | Tester |
|---|---|
| ipolex AXS85-192-M3 10GBase-SR 850-nm 300-m | GL.iNet |
| ipolex CAB-10GSFP-P1.5M 10G SFP+ DAC 1.5-m, 30AWG | Friendly user |
| QSFPTEK QT-SFP+SR CO SFP+ 10G 850nm 300M | GL.iNet |
| QSFPTEK QT-SFP-2.5G-0401D SFP 2.5G 850nm 300M | GL.iNet |
| QSFPTEK QT-SFP+-SR CO SFP+ 10G 850nm 300M | Friendly user |
| QINIYEK BJ-SFP+SR AR 10G 850nm 300M | GL.iNet |
| QINIYEK BJ-SFP+-SR CI SFP+ 10G 850nm 300M | Friendly user |
| XZSNET SFP10G-SR | GL.iNet |
| 10Gtek AXS85-192-M3 10GBase-SR 850-nm 300-m | GL.iNet |
| 10Gtek AZS85-192-M1 25G SFP28-SR 850-nm100-m | GL.iNet |
| 10Gtek ASF85-24-X2-D 1000Base-SX850nm 550M | GL.iNet |
| 10Gtek ASF85-24-X2-D 1.25G SFP-SX 850nm 550-m | GL.iNet |
| FS Cisco SFP-10G-SR Compatible 10GBASE-SR | GL.iNet |
| FS Juniper EX-SFP-10GE-SR 10GBASE-SR SFP+ | GL.iNet |
| FS Arista SFP-10G-SR 10GBASE-SR SFP+ | GL.iNet |
| FS Brocade 10G-SFPP-SR 10GBASE-SR SFP+ | GL.iNet |
| HUAWEI 6G-850nm-120m-MM-SFP+ MTRS-6A11-01 | GL.iNet |
| HUAWEI 2.5G-1310nm-SM-ESFP MXPD-483II | GL.iNet |
| netLINK 10G/850nm/300M/DDM HTB-10G-SR | GL.iNet |
| H!Fiber ASF-GE2-T 10/100/1000Base-T SFP SGMII RJ-45 100-m | GL.iNet |
| H!Fiber ASF85-24-X2-D 1000Base-SX 850nm 550-m | GL.iNet |
| Cisco GLC-SX-MMD 10-2626-01 CLASS 1 21CFR1040.10 LN#50 | Friendly user |
| ONTI OBT-C2GE-R10 SFP 2500Base-TX RJ45 100M | Friendly user |
Solution 2. SFP+ to RJ45 Module (SFP‑10G‑T)¶
2.1 Scenarios¶
The SFP‑10G‑T module converts the SFP+ optical slot into a standard RJ45 twisted-pair interface, which is suitable for short-distance 10G network scenarios based on conventional network cables. Typical applications include short-distance connection between Flint 4 and 10G switches/NAS devices, rapid expansion of 10G RJ45 network ports without re-laying fiber, and home/SOHO high-speed local area network wiring that retains traditional twisted-pair wiring. It is the best alternative for users who need 10G Ethernet but do not have fiber wiring conditions.
2.2 Topology¶
Flint 4 10G SFP+ port → SFP+ to RJ45 Module (SFP‑10G‑T) → CAT6A/CAT7 twisted-pair cable → 10G switch / 10G wired terminal device
2.3 Pros & Cons¶
The table below evaluates key performance and usability dimensions of the SFP+ to RJ45 (SFP‑10G‑T) module solution, with star ratings and detailed notes for reference:
| Metric | Star Rating | Remarks |
|---|---|---|
| Transmission Distance | ★★☆☆☆ | Limited by PHY chip hardware, maximum stable transmission distance is 30 meters only, not applicable for long-distance wiring. |
| Anti-Interference | ★★★☆☆ | Traditional twisted-pair transmission, susceptible to electromagnetic interference and crosstalk in complex wiring scenarios. |
| Energy Saving | ★★☆☆☆ | High power consumption and obvious heat generation under continuous high load; heat dissipation management is required for long-term operation. |
| Compatibility | ★★★★☆ | Compatible with all standard 10G RJ45 terminals; only CAT6A/CAT7 cables support stable 10G transmission. |
| Easy Deployment | ★★★★★ | Plug-and-play, no optical path debugging required, compatible with conventional network cable deployment habits, ultra-low operation threshold. |
| Economy | ★★★★☆ | Reuses existing RJ45 wiring, no fiber transformation cost; only a 10G-T module needs to be purchased separately. |
2.4 Precautions¶
-
Must use CAT6A or higher-spec network cables to support stable 10G transmission; CAT6 and lower cables will cause speed reduction and packet loss.
-
Control the wiring distance within 30 meters; exceeding the limit will lead to link instability, speed drop or disconnection.
-
Reserve heat dissipation space for the SFP‑10G‑T module to avoid equipment failure caused by overheating.
2.5 Compatible Models¶
The following are some SFP+ to RJ45 modules that have been tested by GL.iNet and friendly users to be compatible with Flint 4, for reference only.
| Model | Tester |
|---|---|
| ipolex 10G Base-T RJ45 30m | GL.iNet |
| ipolex ASF-GE-T 1000Base-T SFP RJ-45 100m | GL.iNet |
| QSFPTEK QT-SFP-10G-T UB RJ45 30m | GL.iNet |
| XZSNET-SFP10G-T RJ45 30m | GL.iNet |
| 10Gtek ASF-10G-T RJ45 30m | GL.iNet |
| 10Gtek ASF-2G-T 2.5GBase-T SFP RJ-45 100m | GL.iNet |
| 10Gtek ASF-10G2-T 1G/2.5G/5G/10GBase-T RJ-45 30m | Friendly user |
| HUAWEI SFP-1000BASE-T-RJ45-100m SFP-1000Base-T | Friendly user |
| Xicom SFP-2.5G-T 100/1000M/2.5G RJ45 100m | Friendly user |
Solution 3. PON‑ONU SFP+ Stick¶
3.1 Scenarios¶
The PON‑ONU SFP+ stick integrates complete ONU optical modem functions, enabling Flint 4’s SFP+ port to directly terminate traditional GPON/XGS-PON residential fiber lines. This solution cancels the need for an independent external optical modem, realizing one-device fiber access and routing output. It is applicable to enthusiast-level advanced networking scenarios, especially for users who need to simplify home network equipment stacking and directly access operator PON fiber lines through the router.
3.2 Topology¶
Flint 4 10G SFP+ port → PON‑ONU SFP+ stick → ISP GPON/XGS-PON fiber line (including drop cable, PON splitter, and ISP OLT)
3.3 Pros & Cons¶
The table below evaluates key performance and usability dimensions of the PON‑ONU SFP+ stick solution, with star ratings and detailed notes for reference:
| Metric | Star Rating | Remarks |
|---|---|---|
| Transmission Distance | ★★★★★ | Adapts to standard PON fiber transmission distance, meeting all household and conventional commercial fiber access scenarios. |
| Anti-Interference | ★★★★★ | Fiber optical transmission features strong anti-interference and stable signal, consistent with mainstream PON fiber access standards. |
| Energy Saving | ★★☆☆☆ | High heat generation during high-speed operation; auxiliary heat dissipation is mandatory to avoid performance degradation and disconnection. |
| Compatibility | ★★☆☆☆ | Unofficially verified enthusiast solution; compatibility depends on ISP whitelist and stick model, with unstable long-term operation. |
| Easy Deployment | ★★☆☆☆ | Requires advance ISP confirmation, SN/PLOAM authentication configuration and heat dissipation optimization, with high overall deployment threshold. |
| Economy | ★★★☆☆ | Eliminates independent optical modem cost, but faces potential service risks such as unavailable IPTV/voice services and no official technical support. |
3.4 Precautions¶
-
Confirm ISP permission in advance: Verify with the operator whether customer-owned third-party ONU hardware is allowed to access the PON network, and obtain mandatory authentication parameters including SN registration code and PLOAM password.
-
Heat dissipation is mandatory: Equip the PON‑ONU stick with auxiliary heat dissipation measures to avoid frequency reduction, packet loss and disconnection caused by high temperature.
-
No service guarantee: GL.iNet does not provide technical support for this solution. Problems such as network instability, speed fluctuation and abnormal value-added services cannot be solved by official firmware or after-sales support.
-
Different operators have different module model whitelisting rules; please confirm the operator’s supported PON stick models before purchase.
3.5 Compatible Models¶
The following are some PON-ONU SFP+ stick that have been tested by GL.iNet and friendly users to be compatible with Flint 4, for reference only.
| Model | Tester |
|---|---|
| HUAWEI MA5671A 2.5G ONU stick | GL.iNet |
| NOKIA GPON ONT SFP Class I Laser G-010S-A | Friendly user |
Still have questions? Visit our Community Forum or Contact us.