Cisco GLC-SX-MMD 1000BASE-SX SFP Transceiver Module

Cisco GLC-SX-MMD 1000BASE-SX SFP Transceiver Module

The Cisco GLC-SX-MMD is a Gigabit Ethernet SFP transceiver that provides fast and reliable fibre connectivity for Cisco switches and routers. It supports the IEEE 802.3z 1000BASE-SX standard and works with multimode fibre (MMF). Moreover, its hot-swappable design lets you install or replace the module without shutting down the connected device.

Reliable Gigabit Fibre Performance

The Cisco GLC-SX-MMD delivers data rates of up to 1 Gbps over multimode fibre. It supports transmission distances of up to 550 metres on standard 50 μm multimode fibre. In addition, it supports distances of up to 1 km on laser-optimised 50 μm multimode fibre. Therefore, it is a practical choice for enterprise networks, server rooms, and data centres.

Simple Installation

Cisco designed the GLC-SX-MMD for quick installation and dependable operation. The module fits directly into a compatible SFP port and starts working immediately after installation. As a result, network upgrades become faster and easier.

The hot-swappable design also reduces maintenance time because technicians can replace the module without powering off the switch or router.

Digital Optical Monitoring

The Cisco GLC-SX-MMD supports Digital Optical Monitoring (DOM). Consequently, network administrators can check important operating information in real time.

DOM reports:

• Optical transmit power
• Optical receive power
• Module temperature
• Supply voltage
• Laser bias current

This information helps identify potential issues before they affect network performance.

Key Features

• 1000BASE-SX Gigabit Ethernet SFP
• Supports IEEE 802.3z standard
• Works with multimode fibre (MMF)
• Supports up to 550 m on standard 50 μm MMF
• Supports up to 1 km on laser-optimised 50 μm MMF
• Hot-swappable SFP form factor
• Digital Optical Monitoring (DOM)
• Compatible with supported Cisco switches and routers
• Compact and energy-efficient design

Typical Applications

The Cisco GLC-SX-MMD is suitable for:

• Enterprise LANs
• Data centres
• Server rooms
• Campus networks
• Fibre backbone connections
• Gigabit Ethernet switch uplinks

Technical Specifications

Model: Cisco GLC-SX-MMD

Form Factor: SFP

Ethernet Standard: 1000BASE-SX

Maximum Data Rate: 1 Gbps

Fibre Type: Multimode Fibre (MMF)

Connector: LC Duplex

Maximum Distance:

• Up to 550 m on standard 50 μm MMF
• Up to 220 m on 62.5 μm FDDI-grade MMF
• Up to 1 km on laser-optimised 50 μm MMF

Hot Swappable: Yes

Digital Optical Monitoring: Supported

The Cisco GLC-SX-MMD offers dependable Gigabit fibre connectivity for Cisco networking equipment. Furthermore, it combines reliable performance, simple installation, and real-time diagnostics to support modern business networks.

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