Cisco GLC-ZX-SM-RGD Full Official Product Description
1. Part Number & Naming Definition
Official Full Name
Cisco 1000BASE-ZX Ruggedized Industrial SFP Single-Mode Optical Transceiver Module with DOM Support
SKU:GLC-ZX-SM-RGD
Naming Breakdown
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GLC: Gigabit Ethernet Small Form-Factor Pluggable Transceiver
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ZX: Extended long-reach 1000BASE-ZX standard
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SM: Single-Mode Fiber (SMF) operation
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RGD: Ruggedized industrial wide-temperature specification
Core Product Positioning
The Cisco GLC-ZX-SM-RGD is a hot‑swappable ruggedized SFP transceiver compliant with IEEE 802.3z 1000BASE-ZX. It delivers wire-speed Gigabit Ethernet over single-mode fiber for long-distance communications. Built to withstand harsh operating environments, this industrial rugged variant supports continuous operation from -40°C to +85°C. It incorporates DOM/DDM real-time optical diagnostic monitoring.Critical note: For short fiber spans with total link loss below 8 dB, an inline optical attenuator must be deployed to prevent receiver overload.
2. Hardware & Software Compatibility
Supported Host Platforms
Cisco Catalyst IE2000, IE3300, IE3400, IE4000, IE9300 Industrial Rugged Switches; Catalyst 2960, 3650, 3850, 9200, 9300; ASR 901/903, ASR1000 Series Routers; Firepower appliances equipped with Gigabit SFP slots.
Supported IOS / IOS XE Versions
All mainstream Cisco IOS and IOS XE releases supporting SFP MSA and DOM monitoring functions.
Supported Fiber Type
Single‑Mode Fiber (OS1/OS2, 9/125μm) only; incompatible with multimode 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: 1550 nm DFB 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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Standard OS1/OS2 Single-Mode Fiber: Up to70 km(actual distance depends on fiber quality, splices and connector loss)
Optical Power Budget
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Transmit Optical Power: 0 dBm ~ +5 dBm
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Receiver Sensitivity: Minimum -23 dBm
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Maximum Allowable Received Power: -3 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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Long-distance industrial inter-site fiber communication links
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Power substations, oil & gas, railway transportation and remote unmanned station networks
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Outdoor roadside, field cabinet deployments without temperature-controlled enclosures
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Metro and wide-area Gigabit fiber connections up to 70 km
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Long-haul utility communication backbone deployments
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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-ZX-SM-RGD 1000BASE-ZX Ruggedized Industrial SFP Optical Transceiver
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Hardware installation guide
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Safety and regulatory documentation
Note: Duplex LC single-mode fiber patch cables and optical attenuators (for short links) are sold separately.
End-of-Sale Status
Cisco GLC-ZX-SM-RGD remains active and available for new orders.
Model Comparison Reference
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GLC-ZX-SM: Commercial grade, 0°C ~ +70°C
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GLC-ZX-SMD: Extended temperature grade, -5°C ~ +85°C
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GLC-ZX-SM-RGD: Ruggedized industrial grade, -40°C ~ +85°C
UNSPSC Classification Code
43222618 – Cisco GLC-ZX-SM-RGD 1000BASE-ZX ruggedized industrial single-mode SFP transceiver with DOM, hot‑swappable long-reach 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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