Cisco GLC-FE-100LX Full Official Product Description
1. Part Number & Naming Definition
Official Full Name
Cisco 100BASE-LX10 SFP Fast Ethernet Optical Transceiver Module with DOM Support
SKU:GLC-FE-100LX
Naming Breakdown
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GLC: Gigabit-capable Small Form-Factor Pluggable Transceiver
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FE: Fast Ethernet(100 Mbps) Operation
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100LX: 100BASE-LX10, Single-Mode Fiber, 10 km Maximum Reach
Core Product Positioning
The Cisco GLC-FE-100LX is a hot‑swappable SFP transceiver compliant with IEEE 802.3u 100BASE-LX10. It delivers full-duplex 100 Mbps Fast Ethernet connectivity over single-mode fiber. This module works inFast Ethernet SFP ports or dual-rate Fast/Gigabit SFP portson Cisco switches and routers. It supports DOM/DDM for real-time optical performance monitoring, providing a reliable fiber uplink solution for legacy campus, industrial and branch-site Fast Ethernet networks.
2. Hardware & Software Compatibility
Supported Host Platforms
Cisco Catalyst 2960, 3560, 3650, 3750, 3850, 4500, 6500, 6800; ISR 1100/4000 Series; ASR 1000; Wireless Controllers; Firepower appliances equipped with Fast Ethernet or dual-rate SFP slots.
Supported IOS / IOS XE Versions
All mainstream Cisco IOS and IOS XE releases supporting 100BASE SFP and DOM diagnostic functions.
Supported Fiber Type
Single‑Mode Fiber (OS1/OS2, 9/125μm) only; incompatible with multimode fiber
Unsupported Platforms
Pure Gigabit-only SFP ports (use GLC-GE-100 series instead), SFP+/SFP28/QSFP ports without adapters, MDS storage switches.
Critical Note: This module operates at 100 Mbps only; it cannot negotiate to 1 Gbps.
3. Physical & Optical Performance Specifications
Form Factor
Hot‑swappable SFP (mini‑GBIC) compliant with SFP MSA & SFF‑8472(DOM)
Optical Interface
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Nominal Wavelength: 1310 nm (FP Laser)
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Connector: Duplex LC
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Data Rate: 100 Mbps wire‑speed Fast Ethernet
Maximum Transmission Reach
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Standard OS1/OS2 single‑mode fiber: Up to10 km
Optical Power Budget
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Transmit Power: -15 dBm ~ -8 dBm
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Receiver Sensitivity: Minimum -28 dBm
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Maximum Allowable Received Power: -8 dBm
Digital Diagnostics
DOM / DDM (Digital Diagnostic Monitoring) Supported
Monitors module temperature, supply voltage, laser bias current, transmit optical power, receive optical power.
Environmental Operating Parameters (Commercial Grade)
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Operating Temperature:0°C ~ +70°C (32°F ~ 158°F)
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Storage Temperature: -40°C ~ +85°C (-40°F ~ 185°F)
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Relative Humidity: 10% – 90%, non‑condensing
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Maximum operating altitude: 3,000 meters
Typical Power Consumption
4. Supported Functional Capabilities
Ethernet Transport
100 Mbps full‑duplex operation, 4b/5b 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, packet error counters, DOM real-time optical telemetry, local loopback testing
High Availability
OIR hot‑swap capability 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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Inter-building Fast Ethernet fiber links over single-mode fiber within 10 km range
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Branch office and industrial site 100Mbps fiber uplink connections
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Legacy campus network upgrades preserving existing single-mode fiber infrastructure
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Metro Ethernet access and FTTB Fast Ethernet service deployments
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Spare replacement transceiver for SFP‑based Cisco enterprise switching and routing environments
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, VCCI Class A
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Laser Safety: Class 1 Laser Product per IEC 60825‑1
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Industry Standards: IEEE 802.3u, 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-FE-100LX 100BASE‑LX10 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 are sold separately.
End-of-Sale Status
Cisco GLC-FE-100LX remains active and available for ordering.
Model Distinction Reference
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GLC-FE-100LX: For Fast Ethernet / dual-rate SFP ports(100Mbps)
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GLC-GE-100FX: For pure Gigabit SFP ports(100Mbps over multimode fiber)
UNSPSC Classification Code
43222618 – Cisco GLC-FE-100LX 100BASE-LX10 SFP single-mode fiber transceiver with DOM, hot‑swappable 100Mbps Fast Ethernet fiber module for Cisco Fast Ethernet and dual-rate SFP ports on enterprise switches and routers.
Hardware Warranty
Original Cisco units carry Cisco limited hardware warranty; refurbished units follow reseller warranty terms.
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