Cisco GLC-SX-MMD 1000BASE-SX SFP Transceiver Module
GBIC) transceiver module, 1000Base-SX, up to 0.6 miles, GigE, LC/PC multi-mode, 850 nm
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- GBIC) transceiver module, 1000Base-SX, up to 0.6 miles, GigE, LC/PC multi-mode, 850 nm
| Specifications | GLC-SX-MMD |
| Description | GLC-SX-MMD is a SFP multimode fiber compatible with the IEEE 802.3z 1000BASE-SX standard, with DOM |
| Product Type | Transceiver |
| Connector | Dual LC/PC |
| Form Factor | SFP |
| Transmit Power Range (dBm) | -3 to -9.5 |
| Receive Power Range (dBm) | 0 to -17 |
| Maximum Channel insertion loss in dB (by fiber type) | 2.4 (FDDI-grade) 2.6 (OM1) 3.4 (400/400) 3.6 (OM2) 5 (OM3) 5 (OM4) 5 (OM5) |
| Transmit and Receive Wavelength Range (nm) | 770 to 860 (850nm) |
| DOM | Yes |
| Temperature Range | -5°C to 85°C (23 to 185°F) |
| Wavelength (nm) | Fiber Type | Core Size (μm) |
Modal Bandwidth (MHz* Km) |
Operating Distance (m) |
|---|---|---|---|---|
| 850 | MMF | 62.5 | 160 (FDDI-grade) | 220 (722 ft) |
| 200 (OM1) | 275 (902 ft) | |||
| 50 | 400 (400/400) | 500 (1,640 ft) | ||
| 500 (OM2) | 550 (1,804 ft) | |||
| 2000 (OM3) | 1000 (3281 ft) | |||
| 4700 (OM4) | 1000 (3281 ft) | |||
| 4700 (OM5) | 1000 (3281 ft) |
The Industry Standard for MMF Gigabit Networks
The Cisco GLC-SX-MMD is a trusted and widely deployed SFP transceiver designed for Gigabit Ethernet over multimode fiber (MMF). Operating at 850 nm, it supports distances of up to 550 meters over OM2/OM3 fiber, making it the go-to solution for short-range fiber links inside buildings and campus networks.
A key advantage of this module is its DOM (Digital Optical Monitoring) support—signaled by the “D” in its part number. DOM provides real-time monitoring of optical power levels, voltage, and temperature, helping IT teams proactively diagnose link issues and maintain uptime.
This genuine Cisco SFP is fully hot-swappable, drawing low power, and supports a commercial extended temperature range (–5 °C to 85 °C). Compliant with IEEE 802.3z and SFP MSA, it ensures seamless compatibility across Cisco Catalyst, Nexus, ASR, and ISR devices.
Technical Features
- Speed: 1 Gbps (1000BASE-SX)
- Reach: Up to 550 m over OM3 MMF (OM2 ≈ 220 m)
- Wavelength: 850 nm VCSEL
- Connector: LC duplex
- Diagnostics: DOM (Tx/Rx power, voltage, temperature)
- Power Consumption: ≤ 1W
- Hot-Swappable: Yes — tool-less insertion/removal
- Operating Temp: –5 °C to 85 °C (commercial extended)
- Compliance: IEEE 802.3z, SFP MSA, Class 1 Laser
- Ideal For: Enterprise wiring closets, campus switches, short-range server uplinks
For complete technical details, check the Specifications tab above.
| Weight | 25.0 lbs |
|---|---|
| Form Factor | |
| Power | |
| Brand |
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