GLC-LX-SM-RGD is a Cisco ruggedized Gigabit Ethernet SFP transceiver designed for industrial and harsh-environment deployments. It’s a 1000Base-LX, single-mode fiber SFP built to operate across extended temperature ranges, making it suitable for outdoor cabinets, factories, substations, and transportation networks.
Why buyers pick GLC-LX-SM-RGD (plain English)
Rugged for harsh environments Designed to operate reliably in extreme temperatures where standard optics would fail.
Long-distance fiber links Single-mode LX optics support extended reach compared to multimode SFPs.
Industrial network compatibility Commonly used in utilities, transportation, oil & gas, and industrial Ethernet deployments.
Standard SFP form factor Plugs into compatible Cisco switches and routers with SFP ports.
Cisco-qualified reliability Built and tested to meet Cisco’s ruggedized hardware standards.
60-second spec box (GLC-LX-SM-RGD)
Form factor SFP (Small Form-Factor Pluggable)
Speed / protocol Gigabit Ethernet (1000Base-LX)
Fiber type Single-mode fiber (SMF)
Wavelength 1310 nm
Connector LC duplex
Max distance Up to ~10 km (fiber dependent)
Operating temperature Extended / rugged temperature range
Use case Industrial, outdoor, and harsh-environment Gigabit fiber links.
Where it fits (and when to choose something else)
Perfect for:
Industrial Ethernet networks
Outdoor cabinets and enclosures
Utilities, transportation, and energy sites
Long-distance Gigabit fiber links
Choose something else if:
You’re in climate-controlled environments → standard GLC-LX-SM
You need multimode fiber → SX SFPs
You need longer reach → extended-reach LX/ZX optics
TL;DR
GLC-LX-SM-RGD is Cisco’s ruggedized 1000Base-LX SFP: a single-mode Gigabit fiber transceiver built to deliver reliable connectivity in harsh and industrial environments.
Key specifications
Feature
Specification
Form Factor
SFP (mini-GBIC), hot-swappable
Data Rate
1.25 Gbps (1 GbE)
Standard
1000BASE-LX/LH
Wavelength
1310 nm
Media Type
Single-Mode Fiber (SMF)
Connector
Duplex LC
Maximum Distance
Up to 10 km (6.2 mi) over SMF
Operating Temperature
Industrial grade: -40°C to 85°C (-40°F to 185°F)
Digital Optical Monitoring (DOM)
Yes
Power Consumption
Less than 1 Watt
Features and use cases
Rugged Design: The "-RGD" suffix indicates it's built to withstand challenging conditions and extreme temperature variations, making it suitable for industrial automation, smart cities, and outdoor deployments.
Long-Distance Connectivity: Its 10 km range on single-mode fiber is ideal for connecting network equipment across campuses or in metropolitan area networks (MANs).
Enhanced Diagnostics: With Digital Optical Monitoring (DOM), network administrators can monitor real-time operating parameters, which helps in troubleshooting and maintaining a stable network.
Seamless Integration: The transceiver is compliant with Multi-Source Agreement (MSA) standards, ensuring compatibility with a wide range of compliant networking equipment.
