| NO. | Brand | Compatible P/N | Remarks |
| 1 | Cisco | GLC-LH-SMD | |
| 2 | Alcatel-Lucent | iSFP-GIG-LX | |
| 3 | HPE Procurve | J4859C | |
| 4 | Arista Networks | SFP-1G-LX | |
| 5 | Juniper Networks | JX-SFP-1GE-LX | |
| 6 | Huawei | SFP-GE-LX-SM1310 | |
| 7 | Brocade | E1MG-LX-OM | |
| 8 | H3C | SFP-GE-LX-SM1310 |
Cisco Catalyst Series: 2960-X, 2960-S, 2960-Plus, 3560-X, 3650-24TD, 3750-G, 3850-48T, and Cisco Catalyst 9200/9300 series.
Cisco Router Series: ISR 4000 (4321, 4331, 4431, 4451) and ASR 1000 series.
Cisco Nexus Data Center Switches: Nexus 3000, 5000, and 9000 series 1G SFP ports.
Industrial Networking: Cisco IE-2000 and IE-4000 industrial Ethernet switches.
Enterprise Campus Fiber Backbone: Cost-effective 1G 1310nm 10km fiber links between campus buildings.
ISP Metropolitan Area Networks (MAN): High-volume 1.25G LX SFP deployment for residential broadband distribution.
Data Center Rack Connectivity: Reliable 1000BASE-LX SFP transceiver for server-to-switch 1G fiber connections.
Industrial Automation Control: Stable fiber optic SFP modules for ruggedized Cisco IE switch environments.
| Cisco Compatible | GLC-LH-SMD | Vendor Name | HYTOPTODEVICE |
| Form Factor | SFP | Max Data Rate | 1.25Gbps |
| Wavelength | 1310nm | Max Distance | 10km |
| Connector | Duplex LC | Transmitter Type | 1310nm FP |
| Cable Type | SMF | Receiver Type | PIN |
| TX Power | -12.0~-3.0dBm | Receiver Sensitivity | < -23.0dBm |
| Protocols | SFF-8472 MSA Compliant, IEEE 802.3ah-2004 | Operation Temperature | 0 to 70°C (32 to 158°F) |
Q1:Will HYTOPTODEVICE GLC-LH-SMD trigger the "Cisco unsupported transceiver" error?
A1:No. Our modules are pre-programmed with Cisco compatible EEPROM code, allowing them to be recognized as Cisco GLC-LH-SMD genuine replacements without needing hidden CLI commands.
Q2:Does this 1.25G LX 10km SFP support Digital Optical Monitoring (DOM)?
A2:Yes. This SFP with DDM (Digital Diagnostic Monitoring) allows you to monitor real-time RX/TX optical power, temperature, and voltage directly through the Cisco IOS interface.
Q3:Why buy from a direct SFP source manufacturer like HYTOPTODEVICE?
A3:By using self-sufficient core materials, we offer a wholesale 1.25G SFP price while maintaining 100% quality control. You save on the "brand tax" while getting factory-direct fast shipping.
Q4:Can I use this 10km 1310nm SFP on multi-mode fiber (MMF) legacy links?
A4:Yes, this 1.25G 1310nm 10km transceiver can operate over MMF for short distances (approx. 550m) if used with a Mode Conditioning Patch (MCP) cable to prevent signal loss.
Q5:What is the warranty for HYTOPTODEVICE Cisco compatible fiber modules?
A5：We offer a 3-year warranty and lifetime technical support for all our 1.25G 1310nm 10km SFP transceivers, ensuring long-term peace of mind for network integrators.
HYTOPTODEVICE has supplied over 5000,000 optical transceiver modules to data centers, ISPs, and enterprise networks across 100+ countries since 2011. Every module undergoes a 72-hour burn-in test and full DDM/DOM validation before shipment.
"We replaced 200 Cisco-branded SFPs with HYTOPTODEVICE equivalents across our spine layer — zero compatibility issues, 40% cost reduction."— Network Architect, Tier-2 ISP, Germany
Quality Certification & Compliance：
At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final inspection, our processes ensure global compliance and reliability.
We adhere to rigorous standards for our SFP modules and network solutions:
ISO 9001: Certified quality management and production consistency.
CE & FCC: Fully compliant for seamless Global Market Access.
RoHS: Committed to environmental responsibility and hazardous material control.
Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.
Certified Quality. Global Standards. Guaranteed Performance.
