GLC-LH-SM

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The Cisco GLC-LH-SM is a 1 Gbps Small Form-Factor Pluggable (SFP) fiber transceiver designed for long-distance single-mode fiber (SMF) networks. Operating at a 1310 nm wavelength, it supports link distances up to 10 km over single-mode fiber, making it ideal for enterprise, data center, and campus backbone deployments. Hot-swappable and MSA-compliant, the GLC-LH-SM ensures reliable connectivity for Cisco switches, routers, and other SFP-enabled devices. With low power consumption and plug-and-play design, it delivers high-performance, cost-effective optical uplinks for Gigabit Ethernet and Fiber Channel applications.

The Cisco GLC-LH-SM is a hot-swappable 1 Gigabit Ethernet SFP module designed for high-performance optical connectivity over single-mode fiber (SMF). It operates at a 1310 nm wavelength, providing reliable Gigabit Ethernet links for distances up to 10 kilometers. This module is ideal for enterprise, campus, and data center backbone connections where longer reach is required.

The GLC-LH-SM is fully compliant with the SFP Multi-Source Agreement (MSA), ensuring interoperability with a wide range of Cisco networking devices and third-party equipment. Its plug-and-play design simplifies deployment, while low power consumption reduces operational costs. The module also supports Digital Optical Monitoring (DOM) to track optical parameters such as temperature, voltage, and transmit/receive power.

Key Technical Specifications

Model: Cisco GLC-LH-SM
Form Factor: SFP (Small Form-Factor Pluggable)
Data Rate: 1 Gbps (1000BASE-LX)
Wavelength: 1310 nm
Fiber Type: Single-Mode Fiber (SMF)
Maximum Distance: Up to 10 km
Connector Type: LC Duplex
Hot-Swappable: Yes
Standards Compliance: IEEE 802.3z, MSA-compliant
Digital Optical Monitoring: Yes (optional)
Operating Temperature: 0 °C to 70 °C
Use Case: Long-distance uplinks for switches, routers, and media converters

Overview

The Cisco GLC-LH-SM provides cost-effective, high-performance long-distance connectivity for Gigabit Ethernet networks. Its single-mode fiber compatibility, 10 km reach, and Cisco-certified reliability make it a trusted choice for backbone, inter-building, and campus network links.