Cisco SFP (mini-GBIC) LC Transceiver Module GLC-GE-100FX=

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Overview

Not every network upgrade needs a full Gigabit refresh. Sometimes, you need a clean way to extend reliable Fast Ethernet fiber connectivity without replacing your switch infrastructure. The Cisco GLC-GE-100FX= makes that easy.

This Cisco SFP serves as a 100BASE-FX Fast Ethernet interface converter, plugging into a Gigabit Ethernet SFP port on supported Cisco switches. It delivers full-duplex 100 Mbps connectivity over multimode fiber (MMF) and supports distances up to 2 km. That makes it a smart fit for campus wiring closets, industrial floors, legacy fiber networks, and environments where stable 100 Mbps links still run critical systems.

If your goal is dependable fiber extension with a smooth migration path, this module keeps things simple and cost-effective.

Key Features

·         Supports 100BASE-FX Fast Ethernet fiber connectivity

·         Delivers full-duplex 100 Mbps performance over multimode fiber

·         Plugs into Gigabit Ethernet SFP ports on compatible Cisco switches

·         Operates at 1310nm wavelength for stable optical transmission

·         Supports link distances up to 2 km (MMF)

·         Uses a dual LC connector for common enterprise fiber setups

·         Hot-swappable SFP design for fast installation and replacement

·         Helps extend legacy fiber networks while keeping upgrade options open

·         Designed for Ethernet networking applications in enterprise environments

Technical Specifications

Description: Cisco SFP (mini-GBIC) LC Transceiver Module GLC-GE-100FX=
Part Number: GLC-GE-100FX=
Device Type: Cisco SFP Transceiver
Package / Form Factor: SFP (mini-GBIC)
Application: Ethernet
Data Rate: MAC 1.25Gbps / Fiber 125Mbps
Ethernet Standard: 100BASE-FX
Wavelength: 1310nm
Max Distance / Power Budget: 2 km
Optical Components (LD): FP
Optical Components (PD): PIN
Output Power: -20 to -13 dBm
Receiver Sensitivity: -31 dBm
Power Supply Voltage: 3.3V
Connector: Dual LC
Fiber Type: MMF (Multimode Fiber)
Operating Temperature: 0°C to 70°C
DDMI / DDM: Without
Cisco Part Number Reference: GLC-GE-100FX=
UPC: 746320977003

Use Cases

The Cisco GLC-GE-100FX= is ideal for teams that need stable 100 Mbps fiber connectivity across multimode infrastructure. It works well in legacy enterprise networks, manufacturing environments, campus switch-to-switch links, and older fiber backbones that still support critical operations. If you need to keep Fast Ethernet running reliably while planning for future upgrades, this module offers a smooth, low-risk solution.

Why Choose the GLC-GE-100FX=

·         Reliable Cisco optic for Fast Ethernet 100BASE-FX deployments

·         Supports up to 2 km over multimode fiber for extended links

·         Uses a common dual LC connector for easy fiber integration

·         Hot-swappable SFP module for quick installs and replacements

·         Strong option for maintaining legacy fiber networks without downtime

·         Helps bridge older infrastructure while supporting future migration plans

·         A practical choice for stable connectivity where 100 Mbps still fits

FAQs

What is the Cisco GLC-GE-100FX= used for?

The Cisco GLC-GE-100FX= is used to provide 100BASE-FX Fast Ethernet connectivity over fiber. It helps extend 100 Mbps links between switches using multimode fiber infrastructure.

Does the GLC-GE-100FX= work in a Gigabit SFP port?

Yes. This module plugs into a Gigabit Ethernet SFP port on compatible Cisco switches and functions as a Fast Ethernet fiber interface converter for 100BASE-FX connectivity.

What speed does the Cisco GLC-GE-100FX= support?

It supports 100 Mbps full-duplex Fast Ethernet over fiber. It’s ideal for legacy networks and applications that do not require Gigabit throughput.

What fiber type does the GLC-GE-100FX= use?

It supports multimode fiber (MMF). It is suitable for short- to mid-range enterprise fiber runs and for existing MMF cabling environments.

What is the maximum distance supported by this SFP?

The Cisco GLC-GE-100FX= supports up to 2 km, depending on your fiber quality, termination, patching, and network conditions.

What wavelength does the GLC-GE-100FX= operate on?

It operates at 1310nm, a wavelength commonly used for stable fiber transmission in Fast Ethernet and certain short-reach optical networks.

Does this transceiver support DDM or DDMI monitoring?

No. The Cisco GLC-GE-100FX= is DDMI-free, so it does not provide digital diagnostic monitoring of optical health metrics.

Which connector type does this module use?

This module uses a dual LC connector, a widely used connector type in enterprise fiber installations for duplex connectivity.