Network media converter Cisco GLC-SX-MM-RGD, SFP 1000 Mbit/s, 1000BASE-SX, MMF LC/PC, up to 550 m

Cisco GLC-SX-MM-RGD is a Small Form-Factor Pluggable (SFP) transceiver module designed for Gigabit Ethernet links using 1000BASE-SX multimode fiber. The module provides a hot-swappable fiber interface with LC/PC connectors and supports multimode fiber runs up to 550 m depending on fiber type. It converts electrical Gigabit Ethernet signals to optical signals for short-range fiber connections in LANs, data centers and enterprise network segments where reliable fiber-to-electrical conversion is required.

Advantages

The SFP form factor enables hot-swappable installation and flexible deployment across compatible Cisco equipment and other vendor ports that accept standard SFP modules. Support for 1000 Mbit/s throughput and the 1000BASE-SX standard ensures high-speed Gigabit connectivity over multimode fiber with proven interoperability. LC/PC connectors and multimode compatibility simplify cabling in common building and campus environments while maintaining low insertion footprint in switches and media converters.

Suitable for

• Short-range backbone links between switches and aggregation points within buildings or across campus
• Server or storage uplinks in data center topologies requiring multimode fiber
• Fiber-to-switch conversions where existing multimode fiber infrastructure is in place
• Network equipment requiring hot-swappable SFP transceivers for maintenance or upgrades

Key specifications

• Form factor: Small Form-Factor Pluggable (SFP)
• Data rate: 1000 Mbit/s (Gigabit Ethernet)
• Standard: 1000BASE-SX (IEEE 802.3z compliant)
• Fiber type: Multimode fiber (MMF)
• Connector type: LC/PC duplex
• Maximum reach: Up to 550 m (typical on 50 µm MMF; shorter on 62.5 µm)
• Hot-swappable: Yes

How to use

Insert the Cisco GLC-SX-MM-RGD SFP module into a compatible SFP slot on a switch, router or media converter while the device is powered on or during maintenance windows, following the host equipment guidelines. Connect LC/PC-terminated multimode fiber cables to the duplex LC ports, observing correct polarity and cleaning connector end-faces before mating. Configure the host port for Gigabit operation if required; most modern devices will auto-negotiate when the SFP is detected. Monitor link status indicators on the host device to confirm a stable optical connection.

Usage recommendations

Use clean, certified multimode fiber cables and inspect LC connectors before installation to avoid signal loss. Match the fiber core size (50 µm or 62.5 µm) to the expected reach: up to 550 m on 50 µm MMF and shorter distances on older 62.5 µm fiber. Verify host device compatibility with Cisco SFP modules and ensure firmware or configuration permits third-party or Cisco-branded SFP use where applicable.