Cisco GLC-LH-SMD Gigabit SFP transceiver module, MMF/SMF Multimode & SingleMode

Cisco GLC-LH-SMD Gigabit SFP Transceiver Module MMF and SMF

The Cisco GLC-LH-SMD is a 1000BASE-LX/LH Gigabit SFP transceiver that supports both multimode fibre (MMF) and single-mode fibre (SMF). If you’re searching for information about the Cisco GLC-LH-SMD SFP Module, this overview will help you understand its features and benefits. It delivers reliable Gigabit Ethernet connectivity for enterprise networks, campus environments, and data centres. Moreover, it complies with the IEEE 802.3z 1000BASE-LX standard to ensure dependable network performance.

The module operates over standard single-mode fibre for distances of up to 10 km. In addition, it supports multimode fibre connections of up to 550 metres, making it a flexible solution for different network installations.

Reliable Fibre Connectivity

Cisco designed the GLC-LH-SMD to provide stable optical communication in demanding environments. Furthermore, the module operates at a 1310 nm wavelength, which supports efficient data transmission over both MMF and SMF cabling.

When you install the module on legacy multimode fibre, use a mode-conditioning patch cable to maintain reliable signal quality. As a result, the module continues to perform according to IEEE recommendations.

Key Features

• Supports Gigabit Ethernet (1000BASE-LX/LH)
• Compatible with multimode and single-mode fibre
• Transmission distance up to 10 km on SMF
• Transmission distance up to 550 m on MMF
• 1310 nm operating wavelength
• LC duplex optical connector
• Digital Optical Monitoring (DOM) support
• Extended operating temperature range
• Hot-swappable SFP form factor
• Compatible with Cisco Gigabit Ethernet ports

Cabling Specifications

The Cisco GLC-LH-SMD supports the following fibre connections:

• Single-mode fibre (SMF): Up to 10 km
• Multimode fibre (62.5 µm): Up to 550 m
• Multimode fibre (50 µm): Up to 550 m
• Minimum supported cable distance: 2 metres (6.5 ft)

Therefore, the module fits both short-distance and long-distance Gigabit Ethernet deployments.

Installation Notes

All compatible Cisco SFP ports use LC-type connectors. Additionally, Cisco recommends a mode-conditioning patch cord whenever you install the module on legacy multimode fibre. This recommendation applies regardless of the cable length and helps maintain reliable optical performance.

Typical Applications

The Cisco GLC-LH-SMD works well in many networking environments, including:

• Enterprise LANs
• Campus networks
• Data centres
• Server rooms
• Core and distribution switches
• Fibre backbone connections

Consequently, it provides a dependable solution for organisations that require reliable Gigabit fibre connectivity across different network infrastructures.

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