Cisco GLC-SX-MM-RGD
1000Mbps Multi-Mode Rugged SFP, Original Cisco
Product Highlights
Deploying Gigabit Ethernet in industrial plants, outdoor cabinets, or transportation infrastructure demands optics that won't fail when temperatures swing from freezing cold to scorching heat. The Cisco GLC-SX-MM-RGD is a ruggedized 1000BASE-SX SFP transceiver module purpose-built for exactly these conditions.
This industrial-grade SFP delivers 1 Gbps Gigabit Ethernet over multimode fiber at 850nm, supporting link distances up to 550 meters on standard 50/125µm OM2 fiber and up to 1,000 meters on laser-optimized OM3, OM4, or OM5 fiber. Its extended operating temperature range of -40°C to +85°C makes it the go-to choice for Cisco industrial Ethernet switches, connected grid routers, and rugged ISR platforms where standard commercial-temperature optics simply cannot survive.
The GLC-SX-MM-RGD features a duplex LC/PC connector, hot-swappable plug-in design, and compliance with IEEE 802.3z and IEC 60825-1 Laser Class 1 safety standards. Whether you're connecting industrial Ethernet switches on a factory floor, linking outdoor surveillance infrastructure, or building out a smart-grid communications backbone, this rugged Cisco SFP transceiver provides the reliability and performance your network demands — without compromise.
Features & Benefits
Ruggedized for Extreme Environments
With an industrial operating temperature range of -40°C to +85°C, the GLC-SX-MM-RGD is engineered to perform in environments where standard commercial-grade optics would fail. Deploy with confidence in outdoor enclosures, factory floors, transportation hubs, and utility substations where temperature extremes are the norm.
1000BASE-SX Gigabit Ethernet
Delivering 1 Gbps data rates over 850nm short-wavelength multimode fiber, this SFP supports distances up to 550m on OM2 fiber and up to 1,000m on OM3/OM4/OM5 laser-optimized fiber. It provides cost-effective, high-bandwidth connectivity for short-to-medium reach industrial fiber links.
Hot-Swappable SFP Design
The standard SFP (mini-GBIC) form factor allows hot-swappable installation — insert or remove the module without powering down the host switch or router. This minimizes downtime during maintenance windows and simplifies field replacements in remote or hard-to-access locations.
Broad Cisco Platform Compatibility
The GLC-SX-MM-RGD is supported across a wide range of Cisco platforms including Industrial Ethernet (IE) 2000, 3000, 4000, and 5000 series switches, Catalyst 2960, 3560, 3750, 3850, and 4500 series, ASR 900/901/903 routers, Connected Grid routers, and many more. It's the standard rugged SFP choice for Cisco industrial networking deployments.
Standards Compliance & Safety
Compliant with IEEE 802.3z and IEEE 802.3ah standards, and certified to IEC 60825-1 Laser Class 1 eye safety requirements. These certifications ensure interoperability, regulatory compliance, and safe operation across global deployments.
Deployment Scenarios
Industrial Ethernet & Manufacturing
Connect Cisco IE 2000, IE 3000, and IE 4000 series industrial switches across factory floors, process control networks, and SCADA environments. The rugged temperature rating ensures uninterrupted Gigabit fiber links even in unconditioned industrial spaces.
Smart Grid & Utility Infrastructure
Pair with Cisco Connected Grid routers (CGR 1000/2000 series) and CGS 2520 switches to build resilient fiber backhaul for smart grid communications, substation automation, and distribution network monitoring in outdoor utility environments.
Transportation & Outdoor Surveillance
Deploy in roadside cabinets, rail-side enclosures, and outdoor surveillance aggregation points where equipment is exposed to wide temperature swings. The GLC-SX-MM-RGD provides reliable 1 Gbps uplinks for IP cameras, sensors, and edge computing devices.
Rugged Branch & Edge Networking
Use with Cisco ISR 900 series or Catalyst IR1100 rugged routers in remote branch offices, mining sites, or oil and gas facilities where environmental conditions exceed commercial-grade equipment ratings.
General
Performance
Distance
Connector & Interface
Physical
Environmental
Compliance
Compatibility Notes
Compatible Cisco Platforms (partial list)
- Industrial Ethernet Switches: IE 2000, IE 2000U, IE 3000, IE 3010, IE 4000, IE 4010, IE 5000
- Catalyst Switches: 2960, 2960-S, 2960-X, 3560, 3560-E, 3560-X, 3750, 3750-E, 3750-X, 3850, 4500, 4500-X, 4900, 6800
- Routers: ASR 900, ASR 901, ASR 903, ISR 900, Cisco 2900, Cisco 3200
- Connected Grid: CGR 1000, CGR 2000, CGS 2520
- Rugged Routers: Catalyst IR1100, Cisco 3270 Rugged ISR
- Security Appliances: ASA 5500 Series
- Wireless: Cisco 5700 Series WLC, Aironet 1522AG
Always verify SFP compatibility with your specific platform and IOS/IOS-XE version using the Cisco Transceiver Compatibility Matrix.
Downloads & Resources
Frequently Asked Questions
| Part Number | Product | Key Difference |
|---|---|---|
| GLC-SX-MMD | Cisco 1000BASE-SX SFP (with DOM) | Commercial-temperature (0°C to 70°C) version with DOM support — use when industrial-grade temp range is not required |
| GLC-SX-MM | Cisco 1000BASE-SX SFP (legacy) | Original commercial-temp 1000BASE-SX SFP without DOM — predecessor to GLC-SX-MMD, not ruggedized |
| GLC-LH-SMD | Cisco 1000BASE-LX/LH SFP | Single-mode 1310nm SFP for longer reach up to 10km — choose when distance exceeds multimode limits |
| SFP-GE-S | Cisco 1000BASE-SX SFP (next-gen) | Newer Cisco 1000BASE-SX SFP with DOM — replaces GLC-SX-MMD on newer platforms, commercial temp only |
