Cisco GLC-LX-SM-RGD
1000Mbps Single Mode Rugged SFP, Original Cisco
Product Highlights
Deploying Gigabit Ethernet in industrial environments — factories, substations, transportation hubs, or outdoor enclosures — demands optics that can withstand temperature extremes, vibration, and dust without compromising link integrity. The Cisco GLC-LX-SM-RGD is a 1000BASE-LX/LH rugged SFP transceiver module engineered specifically for these demanding scenarios.
Operating at a 1310 nm wavelength with a dual LC connector, the GLC-LX-SM-RGD delivers 1 Gbps Ethernet connectivity over single-mode fiber spans of up to 10 km, and up to 550 m on multimode fiber. Its extended industrial temperature range of -40°C to +85°C ensures uninterrupted performance where standard commercial-grade optics would fail. The module is compliant with the IEEE 802.3z 1000BASE-LX standard and supports Digital Optical Monitoring (DOM) for real-time link diagnostics.
As an original Cisco transceiver, the GLC-LX-SM-RGD is validated for use in Cisco Industrial Ethernet switches such as the IE 3000 and IE 3010 series, Connected Grid switches, ASR 901/903 routers, and other ruggedized Cisco platforms. Whether you're building out SCADA backhaul, connecting remote IDF closets in a manufacturing plant, or extending fiber links across a utility campus, this rugged SFP delivers the reliability industrial networks require.
Features & Benefits
Industrial-Grade Rugged Design
The GLC-LX-SM-RGD is built to operate in the harshest conditions with an extended temperature range of -40°C to +85°C. Unlike standard commercial SFPs rated for 0–70°C, this rugged module withstands the temperature swings found in outdoor cabinets, factory floors, and utility substations — reducing field failures and unplanned downtime.
Long-Reach Single-Mode Fiber Connectivity
With support for up to 10 km over single-mode fiber and up to 550 m on multimode fiber, the GLC-LX-SM-RGD bridges the distance gap in campus and plant-wide networks. This makes it ideal for connecting remote buildings, outdoor enclosures, or distributed industrial equipment back to a central aggregation switch.
Digital Optical Monitoring (DOM)
DOM capability provides real-time visibility into critical transceiver parameters such as optical TX/RX power, temperature, and bias current. Network administrators can proactively identify degrading fiber links before they cause outages — a critical advantage in industrial environments where physical access to equipment may be limited.
Hot-Swappable SFP Form Factor
The standard SFP (mini-GBIC) form factor allows the GLC-LX-SM-RGD to be inserted or removed from a live switch or router without powering down the device. This hot-swap capability maximizes network uptime during maintenance windows and simplifies port-by-port media flexibility — deploy copper, short-range, or long-range optics as needed.
IEEE 802.3z Standards Compliance
Full compliance with the IEEE 802.3z 1000BASE-LX standard guarantees interoperability across multi-vendor fiber infrastructure. The module also meets Laser Class 1 eye safety requirements per IEC 60825-1, ensuring safe handling and deployment.
Deployment Scenarios
Industrial Ethernet & SCADA Networks
Connect Cisco IE 3000 or IE 2000 series switches across factory floors, oil and gas facilities, or utility substations where extreme temperatures and harsh conditions are the norm. The rugged design ensures continuous uplink availability for SCADA, PLC, and HMI traffic.
Transportation & Smart City Infrastructure
Deploy in roadside cabinets, rail-side enclosures, or traffic management systems where outdoor temperature swings demand industrial-rated optics. The 10 km reach over single-mode fiber connects distributed field equipment back to centralized control rooms.
Campus or Plant-Wide Fiber Backbone
Use the GLC-LX-SM-RGD as a building-to-building uplink in manufacturing campuses or large enterprise sites where fiber runs exceed the 550 m limit of multimode SX optics. The 1310 nm LX wavelength over single-mode fiber provides a cost-effective 1 Gbps backbone.
Utility & Energy Grid Communications
Ideal for Connected Grid switches (CGS-2520 series) and ruggedized routers deployed in power substations and renewable energy sites. The extended temperature tolerance and long-reach fiber support meet the demanding requirements of utility-grade Ethernet networks.
General
Performance
Optical / Fiber
Electrical
Environmental
Diagnostics & Compliance
Compatibility Notes
Supported Cisco Platforms (partial list — always verify against the Cisco Transceiver Compatibility Matrix)
- Cisco IE 3000 Series — IE-3000-4TC, IE-3000-8TC (IOS 12.2(44)EX or later)
- Cisco IE 3010 Series — IE-3010-24TC, IE-3010-16S-8PC
- Cisco IE 2000 Series
- Cisco IE 4000 Series
- Cisco CGS 2520 Connected Grid Switches — CGS-2520-16S-8PC, CGS-2520-24TC
- Cisco CGR 2010 Connected Grid Router
- Cisco ASR 901 / ASR 903 Series Routers
- Cisco 3200 Series Rugged Routers
- Cisco MWR 2941 Mobile Wireless Router
- Cisco ME 3600X Series
Note: When used over legacy multimode fiber, a mode conditioning patch cable is required at the transmitter end. Always consult the Cisco SFP Compatibility Matrix for your specific platform and IOS/IOS-XE version.
Downloads & Resources
Frequently Asked Questions
| Part Number | Product | Key Difference |
|---|---|---|
| GLC-LH-SMD | Cisco 1000BASE-LX/LH SFP (Commercial) | Commercial-grade (0°C to 70°C) with DOM — choose GLC-LX-SM-RGD when you need industrial temperature range (-40°C to 85°C). |
| SFP-GE-L | Cisco 1000BASE-LX/LH SFP (Extended Temp) | Extended temperature (-5°C to 85°C) with DOM — GLC-LX-SM-RGD offers a wider -40°C to 85°C range for true industrial deployments. |
| GLC-SX-MM-RGD | Cisco 1000BASE-SX Rugged SFP | Rugged multimode SFP (850 nm, up to 550 m) — choose GLC-LX-SM-RGD when you need single-mode 10 km reach in industrial environments. |
| GLC-ZX-SM-RGD | Cisco 1000BASE-ZX Rugged SFP | Rugged extended-reach SFP (1550 nm, up to 70 km over SMF) — choose when distances exceed the 10 km limit of the GLC-LX-SM-RGD. |
