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Short range fiber SFP with consistent links.
GLC-SX-MMD
1000BASE-SX SFP transceiver module, MMF, 850nm, DOM
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Name:
GLC-SX-MMD
- Description:
- 1000BASE-SX SFP transceiver module, MMF, 850nm, DOM
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 990143744032
- Condition:
- Warranty:
- 3
- List Price:
$590.00
- Price:
$57.0090.3% off
Quantity:
1
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GLC-SX-MMD Overview
The GLC-SX-MMD is a high-performance Cisco SFP transceiver designed for short-range Gigabit Ethernet connectivity over multimode fiber. This Cisco GLC-SX-MMD module supports 1000BASE-SX applications, enabling seamless deployment across enterprise switching, campus networks, and data center environments. With robust optical performance, it ensures stable communication across multimode fiber runs up to 550 meters, depending on cable type.
Built with Cisco’s digital optical monitoring (DOM) technology, the GLC SX MMD module provides real-time diagnostics for transmit/receive power, temperature, and voltage, ensuring optimal network visibility and simplified troubleshooting. Its hot-swappable design and wide compatibility across Cisco platforms make it a cost-efficient and reliable choice for organizations scaling their high-density fiber networks.
Capabilities
Short-Range Fiber Connectivity
Supports Gigabit Ethernet transmission up to 550m over multimode fiber.
1000BASE-SX Support
Optimized for short-range deployments in enterprise and campus environments.
Digital Optical Monitoring (DOM)
Provides real-time optical diagnostics for improved monitoring and fault detection.
Hot-Swappable Design
Enables quick installation and replacement without service interruption.
Stable Optical Performance
Delivers consistent signal integrity for reliable Gigabit Ethernet communication.
Supported Hardware Models
The GLC-SX-MMD module is compatible with major Cisco switching platforms, including:
- Cisco Catalyst 2960 Series
- Cisco Catalyst 3560 Series
- Cisco Catalyst 3750 Series
- Cisco Catalyst 3850 Series
- Cisco Catalyst 4500 Series
- Cisco Catalyst 6500 Series
- Cisco Nexus 3000 and 9000 Series
This ensures seamless integration across enterprise, campus, and virtualized network environments.
Why Choose the GLC-SX-MMD
- Ideal for short-range Gigabit Ethernet fiber links
- Supports DOM for advanced diagnostic visibility
- Compatible with a wide range of Cisco switching platforms
- Well-suited for enterprise, campus, and multilayer network designs
- Provides a cost-effective and stable optical solution
GLC-SX-MMD price is $57.00, a 90.3% saving from the Cisco list price of $590.00. GLC-SX-MMD is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for GLC-SX-MMD for additional pricing. Browse the full Sfp series or explore all Cisco products.
GLC-SX-MMD Specifications
- Product Type
- Transceiver
- Form Factor
- SFP
- Data Rate
- 1G
- Connector Type
- LC
- Wavelength
- 850 nm
- Transmission Distance
- Short-Range
- Fiber Type
- Multi-mode
- Max Distance
- 220 meters
- Supported Protocols
- Ethernet
- Network Interface
- Fiber
- Power Consumption
- 1.0 W
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco
- Product Name
- GLC-SX-MMD
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
GLC-SX-MMD Use Case
High-Density Data Center Uplinks with GLC-SX-MMD-1000BASE-SX SFP
In a hyperscale data center, network architects deploy the GLC-SX-MMD-1000BASE-SX SFP transceiver in top-of-rack and spine switches to deliver 1 Gbps links over multimode fiber (MMF) at 850 nm up to 550 m. Integrated Digital Optical Monitoring (DOM) provides real-time metrics—optical power, temperature and link health—enabling proactive fault detection and streamlined maintenance. The result is a cost-effective, scalable uplink solution that maximizes port density, minimizes downtime and supports mission-critical workloads with end-to-end visibility.
Enterprise Campus Building-to-Building Fiber Backbone
For a multi-building corporate campus, IT teams install the GLC-SX-MMD-1000BASE-SX SFP module in aggregation switches to interconnect remote floors and buildings over existing multimode fiber infrastructure at 850 nm. With DOM functionality, facility managers monitor link parameters and quickly isolate degradation or fault events before they impact business operations. This deployment ensures reliable 1 Gbps connectivity across distances up to 550 m, reduces capital expenditure on new cabling and guarantees high-performance access to cloud services and unified communications.
Industrial Automation Control Network Fiber Link
In a manufacturing plant’s automation network, engineers use the GLC-SX-MMD-1000BASE-SX SFP transceiver to connect programmable logic controllers (PLCs) and human-machine interfaces (HMIs) over multimode fiber at 850 nm. The transceiver’s DOM capability delivers continuous optical diagnostics, helping maintenance teams detect signal loss, temperature shifts or connector faults before production stops. This approach provides deterministic 1 Gbps performance, enhances operational resilience and supports strict safety and uptime requirements in industrial Ethernet environments.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 GLC-SX-MMD |  GLC-FE-100FX48 |  SFP-OC12-SR= |  SFP-OC12-SR |  GLC-BX80-D-I | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | SFP | SFP | SFP | SFP | SFP |
| Data Rate | 1G | 100 Mbps | OC-12 | OC-12 | 1G |
| Connector Type | LC | LC Duplex | LC | LC | LC |
| Wavelength | 850 nm | 1300 nm | 1310 nm | 1310 nm | 1310 nm (Rx) / 1490 nm (Tx) |
| Transmission Distance | Short-Range | Short-Range | Short-Range | Short-Range | Long-Range |
| Fiber Type | Multi-mode | Multi-mode | Single-mode | Multi-mode | Single-mode |
| Max Distance | 220 meters | 2000 m | 10 km | 300 meters | 80 km |
| Supported Protocols | Ethernet | Ethernet | SONET, OC-12 | SONET / OC-12 | Ethernet |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Fiber |
| Power Consumption | 1.0 W | N/A | 1.5W | N/A | N/A |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Compatibility | Cisco | Cisco | Cisco, Juniper, Huawei, Arista | Cisco / Juniper / Huawei / Arista | Cisco |
| Product Name | GLC-SX-MMD | GLC-FE-100FX48 | SFP-OC12-SR= | SFP-OC12-SR | GLC-BX80-D-I |
| Height | N/A | N/A | 0.30 inches | N/A | N/A |
| Width | N/A | N/A | 0.55 inches | N/A | N/A |
| Depth | N/A | N/A | 0.75 inches | N/A | N/A |
| Weight | N/A | N/A | 0.08 lbs | N/A | N/A |
Reviews & Ratings
A
Ayesha Parveen
4
Easy installation and stable signal.
J
Julien Marchand
5
Reliable for campus networks.
T
Talha Noor
3
No errors observed.
G
Grace Powell
4
Good value.
Questions & Answers
What is the GLC-SX-MMD 1000BASE-SX SFP transceiver module?
The GLC-SX-MMD is a hot-pluggable 1000BASE-SX SFP transceiver designed for multimode fiber (MMF) connectivity at 850 nm, featuring Digital Optical Monitoring (DOM) for real-time diagnostics.
Which fiber cable type is compatible with the GLC-SX-MMD?
The GLC-SX-MMD is compatible with 50/125 µm and 62.5/125 µm multimode fiber (MMF) cables, ensuring optimal signal integrity for short-range links.
What is the maximum transmission distance of the GLC-SX-MMD over MMF?
Over 50/125 µm MMF, the GLC-SX-MMD supports distances up to 550 meters; over 62.5/125 µm MMF, it reaches up to 275 meters at 1 Gbps.
Does the GLC-SX-MMD support Digital Optical Monitoring (DOM)?
Yes, the GLC-SX-MMD features DOM functionality, enabling real-time monitoring of optical power, temperature, and voltage for proactive network maintenance.