GLC-SX-MMD Genuine Cisco GLC-SX-MMD Multimode Transceiver

Cisco GLC-SX-MMD - Overview

The GLC-SX-MMD is the DOM-enabled version of the widely deployed GLC-SX-MM. DOM allows real-time monitoring of optical parameters such as transmit/receive power, temperature, and voltage-useful for troubleshooting and proactive maintenance in enterprise and data center environments.

🔧 Key Specifications

• Form Factor: SFP (hot-swappable)
• Standard: IEEE 802.3z 1000BASE-SX compliant
• Wavelength: 850 nm (short wavelength laser)
• Connector: Duplex LC
• Fiber Type & Reach:
  • 220 m on standard MMF (62.5 µm, FDDI-grade)
  • 550 m on OM2/OM3 MMF (50 µm)
• Data Rate: 1 Gbps line rate
• DOM Support: Yes (monitors optical power, temperature, voltage, laser bias)
• Compatibility: Supported across Cisco Catalyst, Nexus, and MDS platforms
• Hot-Swappable: Yes, without disrupting system operation

🧩 Ideal Use Cases

• Enterprise LANs needing short-range Gigabit fiber uplinks
• Campus networks interconnecting wiring closets within a building
• Data centers for rack-to-rack or row-to-row Gigabit links
• Environments requiring proactive monitoring of optical health via DOM