Cisco GLC-LH-SMD SFP Module
The Cisco GLC-LH-SMD Transceiver provides enterprise-grade connectivity for Gigabit Ethernet applications across both single-mode and multimode fiber infrastructure. This hot-swappable input/output device plugs directly into a Gigabit Ethernet port or SFP slot. Consequently, it links the network port with the fiber-optic cabling plant. The module fully adheres to the IEEE 802.3z 1000BASE-LX/LH standard. Therefore, it ensures interoperability with standardized networking hardware. This specific model features Digital Optical Monitoring (DOM) support. This capability allows network engineers to access real-time operating parameters via the switch command-line interface.
Key Features
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Dual Fiber Support
The hardware operates on standard single-mode fiber-optic link spans up to 10km and up to 550m on any multimode fibers. -
Digital Optical Monitoring (DOM)
- Real-time monitoring of transceiver temperature
- Laser bias current tracking
- Transmitted and received optical power measurement
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Hot-Swappable Functionality
Network administrators can remove or replace this interface module without powering down the host switch or router.
Specifications
| Feature | Specification |
|---|---|
| Cabling Type | 1000BASE-LX/LH |
| Wavelength | 1310 nm |
| Max Distance (SMF) | 10 km (6.2 miles) |
| Max Distance (MMF) | 550 m (1,804 ft) |
| Connector Type | LC Duplex |
| Data Rate | 1.25 Gbps |
| Operating Temperature | -5°C to 85°C (23°F to 185°F) |
What’s in the Box
- 1 x Cisco GLC-LH-SMD SFP Transceiver Module
- 1 x Protective Dust Cap
- 1 x Installation Documentation
Why Choose This Module
- The unit ensures maximum network uptime through its hot-swappable architecture and robust physical design.
- Additionally, the 1310nm wavelength provides a reliable balance between signal integrity and transmission distance.
- Integrated DOM capabilities enable proactive maintenance by identifying potential optical link failures before they impact traffic.
- This transceiver maintains full compatibility with the extensive Cisco Catalyst and Nexus switching portfolios.
- Consequently, procurement managers can standardize on a single module for both short-range campus and long-range metropolitan links.







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