Cisco GLC-SX-MMD Plug-in Module Transceiver
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Cisco GLC-SX-MMD 1000Base SX Fiber Duplex SFP Transceiver New

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Part Number#: GLC-SX-MMD
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Short Description:
GLC-SX-MMD 1000Base-SX Multi-Mode Fiber 550m 850nm Duplex Connector Small Form-Factor Pluggable (SFP) (Mini-GBIC) Transceiver Module | Made by Cisco | New Factory Sealed
Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

Product Overview of the Cisco GLC-SX-MMD

The Cisco GLC-SX-MMD 1000Base-SX Multi-Mode Fiber Transceiver Module is a vital component in networking, facilitating high-speed data transmission over short distances. In this detailed explanation, we will delve into the various features, specifications, and applications of this transceiver module, offering insights into its significance in modern networking setups.

The Cisco GLC-SX-MMD is a Small Form-Factor Pluggable (SFP) Transceiver Module designed for Gigabit Ethernet applications. It operates on the 1000Base-SX standard, indicating its compatibility with multi-mode fiber optic cables. This module is well-suited for scenarios where high-speed and efficient data transfer is essential.

Technical Specifications

Data Transfer Standard: 1000Base-SX

The GLC-SX-MMD module adheres to the 1000Base-SX standard, ensuring compatibility with Gigabit Ethernet networks. This standard specifies the use of short-wavelength signals over multi-mode fiber optic cables for high-speed data transmission.

Fiber Type: Multi-Mode Fiber

The GLC-SX-MMD module is optimized for use with multi-mode fiber optic cables. Multi-mode fibers allow multiple light modes to propagate simultaneously, making them suitable for shorter-distance transmissions within networking environments.

Transmission Distance: 550m

This transceiver module supports a transmission distance of up to 550 meters. This makes it ideal for applications where devices are in relatively close proximity, such as within the same building or data center.

Wavelength: 850nm

The module operates at a wavelength of 850nm. This specific wavelength is well-suited for multi-mode fiber optic cables, contributing to efficient data transmission over short to medium distances.

Connector Type: Duplex Low Current (LC)

The GLC-SX-MMD module is equipped with a Duplex Low Current (LC) connector. The duplex configuration allows for simultaneous transmission and reception of data, while the LC connector type is known for its compact design and reliable performance.

Form-Factor: Small Form-Factor Pluggable (SFP)

The Small form-factor pluggable (SFP) design of the GLC-SX-MMD module ensures compatibility with various networking devices. SFP modules are hot-swappable, allowing for easy installation and replacement without disrupting the entire network.

Alternate Name: Mini-GBIC Transceiver Module

The GLC-SX-MMD is sometimes referred to as a Mini-GBIC (Gigabit Interface Converter) Transceiver Module. This alternative name underscores its role in converting Gigabit Ethernet signals and its compact form factor.

Features of Cisco GLC-SX-MMD

Hot-Swappable Design

One of the key features of the GLC-SX-MMD module is its hot-swappable design. This means that the module can be replaced or installed without shutting down the entire network. This feature is especially valuable for minimizing downtime during maintenance or upgrades.

Digital Optical Monitoring (DOM)

The GLC-SX-MMD module supports Digital Optical Monitoring (DOM), allowing for real-time monitoring of the module's parameters. This feature enables network administrators to gather critical information about the module's performance, including optical power levels and temperature.

Low Power Consumption

Efficient power consumption is a noteworthy feature of the GLC-SX-MMD module. Designed to operate with minimal power requirements, the module contributes to overall energy efficiency in networking environments, making it an environmentally friendly option.

Wide Compatibility

The SFP design of the GLC-SX-MMD module enhances its compatibility with a variety of networking equipment. This flexibility allows it to be used in switches, routers, and other devices, providing a versatile solution for different networking scenarios.

Applications of Cisco GLC-SX-MMD

Enterprise Networks

The GLC-SX-MMD module is well-suited for enterprise networks, where high-speed and reliable connections are essential for the efficient operation of various devices. Its compatibility with multi-mode fiber optic cables makes it a suitable choice for short to medium-distance connections within office buildings.

Data Centers

In data center environments, where the transmission of large volumes of data between servers and storage systems is crucial, the GLC-SX-MMD module finds its application. The 550m transmission distance is suitable for interconnecting devices within the same data center.

Campus Networks

Campus networks, spanning university campuses or large corporate facilities, benefit from the GLC-SX-MMD module's high-speed data transfer capabilities. Its compatibility with multi-mode fiber optics and relatively short transmission distance make it an optimal choice for connecting devices within a campus network.

Reliability of SFP Transceiver

Cisco GLC-SX-MMD SFP (mini-GBIC) transceiver modules are generally considered to be reliable and high-performance networking devices. They are designed to transmit and receive data over fiber optic cables, and they are commonly used in enterprise and data center environments where fast and reliable connectivity is critical.

To ensure the reliability of a Cisco GLC-SX-MMD transceiver module, it is important to follow best practices for installation, configuration, and maintenance. This includes choosing a suitable location for the transceiver, properly configuring the transceiver and any associated networking equipment, and keeping the transceiver's firmware and software up to date. It is also important to follow proper security measures, such as enabling encryption and using strong passwords, to protect the transceiver and the network it is connected to.

General Information about this Cisco GLC-SX-MMD

Technical Information for 1000Base-SX Transceiver Module

  • Application/Usage: Optical Network
  • Application/Usage: Data Networking
  • Transceiver Type: SFP (mini-GBIC)
  • Connectivity Technology: Wired
  • Form Factor: Plug-in module

Interfaces/Ports of SFP (mini-GBIC)Transceiver

  • Total Number of Ports: 1
  • Connector Type: LC/PC
  • Interfaces/Ports Details: 1 x LC/PC Duplex 1000Base-SX Network

Media & Performance

  • Media Type Supported: Optical Fiber
  • Fiber Optic Cable Standard: 62.5 µm, 50 µm
  • Fiber Mode Supported: Multi-mode
  • Ethernet Technology: Gigabit Ethernet
  • Network Technology: 1000Base-SX
  • Compatible Networks: 1000 MBPS (1 GBPS)
  • DDM: Yes
  • Fiber Operating Mode: Full-Duplex
  • Max Transfer Distance: 550 M (1804 ft)
  • Maximum Data Transfer Rate: 1.25 GBPS
  • MTBF: 3,381,761 Hours
  • Wavelength: 850NM

Power Description

  • Power Consumption (In Watts): 1 W

Environmental Parameters

  • Min Operating Temperature: 32 °F
  • Max Operating Temperature: 158 °F
  • Humidity Range Operating: 5 - 95%


  • Multisource Agreement Compliant
  • Cisco ME 3400
  • Catalyst Express 500
  • Catalyst Express 520
  • Cisco ME 4900 Series
  • Catalyst 2960-S Series
  • Catalyst 2960 series
  • Catalyst 2950 Series
  • Catalyst 2970 series
  • Catalyst 3550 Series
  • Catalyst 3560-E Series
  • Catalyst 3560-X Series
  • Catalyst 3750 series
  • Catalyst 3750-E Series
  • Catalyst 3750-X Series
  • Catalyst 3560 Series
  • Cisco IE3010 series
  • Catalyst 4500 series
  • Catalyst 4900 Series
  • Catalyst 6500 series
  • Cisco Catalyst 2350 Series
  • Cisco Catalyst 2360 Series
  • Cisco Catalyst 3000 and 3100 Blade Switches
  • Cisco Nexus 7000 Series
  • Cisco uBR7200 Series
  • Cisco 7300 Series Router
  • Cisco 7600 Series Router
  • Cisco uBR10000 Series Router
  • Cisco MWR 2941 Mobile Wireless Routers

In summary, the Cisco GLC-SX-MMD 1000Base-SX Multi-Mode Fiber Transceiver Module is a versatile and reliable component in networking. Its adherence to the 1000Base-SX standard, compatibility with multi-mode fiber optics, and features such as hot-swappability and low power consumption make it an ideal choice for various applications. From enterprise networks to data centers and telecommunication infrastructure, the GLC-SX-MMD module plays a crucial role in facilitating high-speed and efficient data transfer. As networking technology continues to evolve, the Cisco GLC-SX-MMD remains a steadfast solution for meeting the demands of modern, high-performance networks.

Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

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