Cisco 100Base-LX SFP Transceiver Module

Overview

The Cisco GLC-FE-100LX is a small form factor pluggable (SFP) transceiver module designed to provide 100Base-LX connectivity for compatible Cisco switches and routers. It supports data transmission at 1 Gb/s over single-mode fiber with a wavelength of 1310 nm, enabling reliable network links up to 10 kilometers. This module is ideal for extending network reach in campus backbones, building-to-building connections, or any scenario where copper cabling falls short.

Its hot-swappable design allows network administrators to replace or upgrade the module without interrupting network operations, making maintenance straightforward and efficient. The transceiver also operates across a wide temperature range, ensuring stable performance in various environments such as wiring closets, data centers, and outdoor cabinets.

Key features

• Supports single-mode fiber connections up to 10 kilometers, extending network reach beyond copper limitations
• Operates at a 1 Gb/s data rate with a 1310 nm wavelength for smooth and consistent data transmission
• Hot-swappable design enables seamless upgrades and maintenance without downtime
• Wide operating temperature range from 32 to 158°F allows deployment in diverse environments
• Dual-rate compatibility with Fast Ethernet and Gigabit Ethernet ports provides flexibility as network speeds evolve

Key specs

• Data rate: 1 Gb/s
• Wavelength: 1310 nm
• Maximum link length: 10 kilometers over single-mode fiber
• Operating temperature: 32 to 158°F (0 to 70°C)
• Form factor: Small form factor pluggable (SFP)
• Supported standards: 100Base-LX Fast Ethernet

Connectivity and compatibility

This transceiver module is compatible with a wide range of Cisco switches and routers that support SFP slots. It connects to single-mode fiber optic cables, making it suitable for long-distance network segments where copper cables are impractical. The dual-rate support means it can function in both Fast Ethernet and Gigabit Ethernet ports, providing versatility for mixed-speed network environments.

Performance and reliability

The module delivers consistent data transmission with minimal latency and signal loss, which is critical for maintaining network integrity over long distances. Its robust operating temperature range ensures reliable performance even in less controlled environments, such as outdoor enclosures or field cabinets. The hot-swappable feature reduces network downtime during maintenance or upgrades, supporting continuous business operations.

Ideal uses and environments

This transceiver is well suited for IT professionals managing enterprise or campus networks that require fiber optic links between buildings or across large facilities. It fits naturally in data centers, wiring closets, and outdoor cabinets where temperature conditions vary. The module’s ability to support both Fast Ethernet and Gigabit Ethernet ports makes it a practical choice for networks undergoing speed transitions or expansions.