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1000BASE-LX/LH SFP delivers dependable long-distance connectivity over SMF/MMF with DOM support.
GLC-LH-SMD
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1000BASE-LX/LH SFP transceiver module, MMF/SMF, 1310nm, DOM
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GLC-LH-SMD
- Description:
- 1000BASE-LX/LH SFP transceiver module, MMF/SMF, 1310nm, DOM
- Rating:
Added to cart 28 times recently
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In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 757120601906
- Condition:
- Warranty:
- 3
- List Price:
$1,174.00
- Price:
$97.0091.7% off
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1
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GLC-LH-SMD Overview
TheGLC-LH-SMDis a high-performance Cisco SFP module designed for reliable Gigabit Ethernet connectivity across long-distance fiber networks. This Cisco GLC-LH-SMD Transceiversupports dual-rate operation (1000BASE-LX/LH), enabling seamless deployment in enterprise switching, data center environments, and metropolitan networks. With its robust optical performance, it ensures stable communication over single-mode fiber up to 10 kilometers.
Engineered with Cisco’s industry-leading digital optical monitoring (DOM), the GLC LH SMDmodule provides real-time diagnostics for transmit/receive power, temperature, and voltage, ensuring optimal network health and simplified troubleshooting. Its hot-swappable design and broad switch compatibility make it an ideal choice for organizations scaling their network infrastructure efficiently and cost-effectively.
Capabilities
Long-Distance Fiber Connectivity
Supports Gigabit Ethernet transmission up to 10km using single-mode fiber.
Dual-Rate Operation
Compatible with 1000BASE-LX and 1000BASE-LH applications for flexible deployment
Digital Optical Monitoring (DOM)
Provides real-time optical diagnostics to improve monitoring and fault detection.
Hot-Swappable Design
Ensures quick installation and replacement without network downtime.
High Signal Stability
Delivers consistent optical performance for enterprise-grade reliability.
Supported Hardware Models
The GLC-LH-SMD module is supported across a wide range of Cisco switches and routers, 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 broad compatibility ensures smooth integration into diverse enterprise and data center networks.
Why Choose the GLC-LH-SMD
- Reliable long-distance Gigabit Ethernet performance
- DOM support for advanced network visibility
- Excellent compatibility with major Cisco switching platforms
- Ideal for enterprise, campus, and metro fiber deployments
- Cost-effective and highly stable optical solution
GLC-LH-SMD price is $97.00, a 91.7% saving from the Cisco list price of $1,174.00. GLC-LH-SMD is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for GLC-LH-SMD for additional pricing. Browse the full Sfp series or explore all Cisco products.
GLC-LH-SMD Specifications
- Power Consumption
- N/A
- Product Type
- Transceiver
- Connector Type
- LC
- Supported Protocols
- Ethernet
- Network Interface
- Fiber
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Height
- 0.30 inches
- Wavelength
- 1310 nm
- Transmission Distance
- Long-Range
- Fiber Type
- Single-mode
- Max Distance
- 10 km
- Width
- 0.55 inches
- Form Factor
- SFP
- Weight
- 0.10 lbs
- Depth
- 1.65 inches
- Data Rate
- 1G
- Compatibility
- Cisco
- Product Name
- GLC-LH-SMD
GLC-LH-SMD Use Case
Data Center Inter-Rack Long-Haul Connectivity with 1000BASE-LX/LH SFP Module
In a multi-hall data center environment, IT teams deploy the GLC-LH-SMD-1000BASE-LX/LH SFP transceiver (MMF/SMF, 1310 nm, DOM) to link core switches across a 10 km single-mode fiber span. Real-time DOM metrics enable proactive fiber health monitoring, reducing unplanned downtime by 40 % and ensuring consistent gigabit throughput for virtualized workloads.
Campus Network Backbone Extension for University Facilities
A large university extends its network backbone between academic buildings using the GLC-LH-SMD-1000BASE-LX/LH SFP module over multimode and single-mode fiber paths up to 5 km. Integrated DOM diagnostics streamline fault isolation, cutting maintenance windows in half and delivering reliable 1 Gbps connectivity for e-learning platforms and VoIP services.
Metro Ethernet Service Provider Ring Deployment
A regional ISP implements a resilient metro ring by installing GLC-LH-SMD-1000BASE-LX/LH SFP transceivers (1310 nm, DOM) in aggregation switches across four POPs spanning 15 km. Industry-grade optical performance and DOM-enabled link monitoring guarantee SLA adherence, improve mean time to repair by 60 %, and support scalable gigabit services for enterprise customers.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| GLC-LH-SMD |  GLC-FE-100LX-RGD= |  GLC-FE-100FX48 |  GLC-BX40-D-I= |  GLC-BX80-U-I= | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | SFP | SFP | SFP | SFP | SFP |
| Data Rate | 1G | 1G | 100 Mbps | 1G | 1G |
| Connector Type | LC | LC | LC Duplex | LC | LC |
| Wavelength | 1310 nm | 1310 nm | 1300 nm | 1310/1490 nm | 1310/1490 nm |
| Transmission Distance | Long-Range | Long-Range | Short-Range | Long-Range | Extended-Range |
| Fiber Type | Single-mode | Single-mode | Multi-mode | Single-mode | Single-mode |
| Max Distance | 10 km | 10 km | 2000 m | 40 km | 80 km |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Fiber |
| Power Consumption | N/A | N/A | N/A | 1.2W | 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 | Cisco | Cisco |
| Product Name | GLC-LH-SMD | GLC-FE-100LX-RGD= | GLC-FE-100FX48 | GLC-BX40-D-I= | GLC-BX80-U-I= |
| Height | 0.30 inches | N/A | N/A | 0.28 inches | N/A |
| Width | 0.55 inches | N/A | N/A | 2.18 inches | N/A |
| Depth | 1.65 inches | N/A | N/A | 1.20 inches | N/A |
| Weight | 0.10 lbs | N/A | N/A | 0.06 lbs | N/A |
Reviews & Ratings
F
Finn Carver
5
Professional-grade, easy deployment, stable throughput.
G
Giselle Park
5
Reliable module for enterprise backbone fiber links.
H
Harrison Drake
5
Durable and low-maintenance, ensures consistent signal quality.
I
Isla Reed
5
Ideal for long-distance network applications with high stability.
Questions & Answers
What is the Cisco GLC-LH-SMD 1000BASE-LX/LH SFP transceiver?
The GLC-LH-SMD is a hot-pluggable SFP module that delivers 1 Gbps throughput over single-mode or multimode fiber at 1310 nm, supporting DOM for real-time diagnostics.
What transmission distance does the GLC-LH-SMD support on single-mode fiber?
Over single-mode fiber (SMF, 9 µm), the GLC-LH-SMD supports distances up to 10 km at 1 Gbps.
Can I use the GLC-LH-SMD on multimode fiber?
Yes, when used with mode-conditioning patch cords, the GLC-LH-SMD can operate over multimode fiber (50/125 µm) for up to 550 m.
What wavelength does the GLC-LH-SMD operate at?
The module transmits at a nominal wavelength of 1310 nm, ideal for low-loss, long-reach applications.
Does the GLC-LH-SMD support Digital Optical Monitoring (DOM)?
Yes, the GLC-LH-SMD features DOM (SFF-8472) for real-time monitoring of optical power, temperature, and laser bias.
Which connector type does the GLC-LH-SMD use?
It uses an LC duplex connector for reliable, low-loss fiber connections.
Is the GLC-LH-SMD compatible with Cisco and third-party switches?
The GLC-LH-SMD is fully compatible with Cisco platforms and many third-party switches that accept 1000BASE-LX/LH SFP modules.
What is the operating temperature range of the GLC-LH-SMD?
The commercial-grade GLC-LH-SMD operates between 0 °C and 70 °C (32 °F–158 °F).
How do I install the GLC-LH-SMD in my switch or router?
Align the module with the SFP slot, gently insert until it clicks, and connect LC fiber patch cords—no software configuration required.
What is the typical power consumption of the GLC-LH-SMD?
The module consumes less than 1 W of power, optimizing energy efficiency in high-density deployments.
What laser class is the GLC-LH-SMD certified for?
The GLC-LH-SMD is Class 1 laser compliant, ensuring safe operation under all specified conditions.
What is the optical receive sensitivity of the GLC-LH-SMD?
The minimum receive sensitivity is –24 dBm, providing robust link performance over long distances.
Which standards and protocols does the GLC-LH-SMD support?
It conforms to IEEE 802.3z 1000BASE-LX/LH standards and SFF-8472 for DOM, ensuring wide interoperability.
What warranty coverage is offered for the GLC-LH-SMD?
The GLC-LH-SMD includes a lifetime warranty covering manufacturing defects and performance issues.
How can I troubleshoot link issues with the GLC-LH-SMD?
Verify proper fiber type, check DOM diagnostics for optical power, ensure clean connectors, and confirm correct SFP slot insertion.