Cisco GLC-SX-MM-RGD Full Official Product Description
1. Part Number & Naming Definition
Official Full Name
Cisco 1000BASE-SX Ruggedized Industrial SFP Optical Transceiver Module
SKU:GLC-SX-MM-RGD
Naming Breakdown
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GLC: Gigabit Ethernet Small Form-Factor Pluggable Transceiver
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SX: Short wavelength 850nm VCSEL for multimode fiber
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MM: Multi-Mode Fiber (MMF) operation
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RGD: Ruggedized, Industrial-grade wide temperature specification
Core Product Positioning
The Cisco GLC-SX-MM-RGD is a hot‑swappable ruggedized SFP transceiver compliant with IEEE 802.3z 1000BASE-SX. It delivers wire-speed Gigabit Ethernet over multimode fiber and features an industrial wide-temperature design for harsh operating environments. Differentiated from commercial GLC-SX-MM and extended-temperature GLC-SX-MMD, this ruggedized variant supports continuous operation from -40°C to +85°C, making it ideal for industrial automation, transportation, energy utilities and outdoor network deployments. It supports DOM/DDM real-time optical diagnostics.
2. Hardware & Software Compatibility
Supported Host Platforms
Cisco Catalyst IE2000, IE3300, IE3400, IE4000, IE9300 Rugged Industrial Switches; Catalyst 2960, 3650, 3850, 9200, 9300; ASR 901/903, ASR1000 Series Routers; Firepower appliances with SFP slots.
Supported IOS / IOS XE Versions
All mainstream Cisco IOS and IOS XE releases supporting SFP MSA and DOM monitoring.
Supported Fiber Type
Multimode Fiber only (OM1, OM2, OM3, OM4, 62.5μm / 50μm); incompatible with single-mode fiber
Unsupported Platforms
SFP+/SFP28/QSFP ports without adapters, legacy GBIC-only interfaces, MDS storage switches.
3. Physical & Optical Performance Specifications
Form Factor
Hot‑swappable SFP (mini‑GBIC), compliant with SFP MSA & SFF‑8472 (DOM support)
Optical Interface
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Transmitter: 850 nm VCSEL laser
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Connector: Duplex LC
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Data Rate: 1.25 Gbps Gigabit Ethernet
Maximum Transmission Reach
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OM1 (62.5μm MMF): Up to 275 m
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OM2 (50μm MMF): Up to 550 m
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OM3 / OM4 laser-optimized MMF: Up to 1000 m
Optical Power Budget
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Transmit Optical Power: -9.5 dBm ~ -3 dBm
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Receiver Sensitivity: Minimum -17 dBm
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Maximum Allowable Received Power: 0 dBm
Digital Diagnostics
DOM / DDM (Digital Diagnostic Monitoring) Supported
Monitors module temperature, supply voltage, laser bias current, transmit and receive optical power.
Environmental Operating Parameters (Industrial Ruggedized Grade)
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Operating Temperature:-40°C ~ +85°C (-40°F ~ 185°F)
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Storage Temperature: -40°C ~ +85°C (-40°F ~ 185°F)
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Relative Humidity: 5% – 95%, non‑condensing
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Maximum operating altitude: 3,000 meters
Typical Power Consumption
4. Supported Functional Capabilities
Ethernet Transport
Wire-speed Gigabit Ethernet full-duplex transmission, 8b/10b line coding
Layer 2 Protocol Support
802.1Q VLAN trunking, 802.3x pause frame flow control, LACP, STP/RSTP/MSTP, EtherChannel link aggregation
Interface Diagnostics
Link status detection, error counters, DOM real-time optical telemetry, local loopback testing
High Availability
OIR online insertion and removal on supported chassis; link redundancy via spanning tree or port channels
Operations & Management
IOS / IOS XE CLI, SSH, SNMP v2c/v3, Syslog logging, DOM optical parameter polling
5. Typical Deployment Scenarios
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Industrial factory automation network interconnections
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Power substation, oil & gas, railway transportation communication networks
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Outdoor roadside and remote site ruggedized switch uplinks
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Harsh-temperature cabinet deployments without climate control
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Campus and building interconnections over short-range multimode fiber within 1km
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Spare replacement transceiver for Cisco industrial and enterprise switching/routing platforms
6. Regulatory & Compliance Certifications
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Safety Standards: UL 60950‑1, IEC/EN 60950‑1, CSA C22.2 No.60950‑1
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EMC Compliance: CE Mark, FCC Part 15 Class A, ICES‑003 Class A
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Laser Safety: Class 1 Laser Product per IEC 60825‑1
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Industry Standards: IEEE 802.3z, SFP MSA, SFF‑8472
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Environmental: RoHS compliant, WEEE directive compliant
7. Standard Factory Package Contents
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Cisco GLC-SX-MM-RGD 1000BASE-SX Ruggedized Industrial SFP Optical Transceiver
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Hardware installation guide
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Safety and regulatory documentation
Note: Duplex LC multimode fiber patch cables are sold separately.
End-of-Sale Status
Cisco GLC-SX-MM-RGD remains active and available for new orders.
Model Comparison Reference
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GLC-SX-MM: Commercial grade, 0°C ~ +70°C
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GLC-SX-MMD: Extended temperature grade, -5°C ~ +85°C
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GLC-SX-MM-RGD: Ruggedized industrial grade, -40°C ~ +85°C
UNSPSC Classification Code
43222618 – Cisco GLC-SX-MM-RGD 1000BASE-SX ruggedized industrial multimode SFP transceiver with DOM, hot‑swappable Gigabit optical module for Cisco industrial and enterprise switches and routers.
Hardware Warranty
Original Cisco units carry Cisco limited hardware warranty; refurbished units follow reseller warranty terms.
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