Cisco GLC-SX-MMD 1000BASE-SX SFP 850nm Transceiver

Cisco GLC-SX-MMD SFP Module

The Cisco GLC-SX-MMD Transceiver provides high-performance Gigabit Ethernet connectivity for enterprise-level networking environments. This module utilizes the 1000BASE-SX standard to deliver data rates up to 1 Gbps over multi-mode fiber infrastructure. It operates at a nominal wavelength of 850nm and supports Digital Optical Monitoring (DOM) for real-time diagnostic capabilities. Consequently, network engineers can monitor optical signal health directly through the switch interface. This hardware component facilitates reliable short-reach data center links and campus backbone connectivity without compromising signal integrity.

Key Features

• Digital Optical Monitoring (DOM)
  This integrated diagnostic functionality enables the monitoring of internal supply voltage, laser bias current, and temperature to prevent link failures.

• Physical Layer Architecture

  • 850nm VCSEL transmitter for efficient light emission
  • PIN photodetector receiver for high-sensitivity data capture
  • Dual LC/PC connector interface for secure fiber termination

• Hot-Swappable Form Factor
  The module supports immediate installation and removal from any SFP port without requiring a system reboot or downtime for the host equipment.

Specifications

What’s in the Box

• Cisco GLC-SX-MMD SFP Transceiver Module
• Dust Cap for Optical Port
• Installation Documentation

Why Choose This SFP Module

• This hardware maintains native compatibility with Cisco IOS, ensuring simplified management and automatic configuration upon insertion.
• The device offers a wide operating temperature range suitable for diverse data center environments and wiring closets.
• Industry-standard MSA compliance guarantees interoperability with other standards-based networking equipment when required.
• Low power consumption profiles reduce the overall thermal load on high-density switch chassis and line cards.
• High MTBF ratings ensure long-term reliability for mission-critical uplink and downlink connections.