GLC-LH-SMD Cisco 1GBPS Single Mode Fiber Transceiver Module

Cisco GLC-LH-SMD 1GBPS Single Mode Transceiver Module

The Cisco GLC-LH-SMD 1GBPS Optical Fiber Transceiver Module is a compact, hot-swappable Small Form-Factor Pluggable (SFP) solution engineered to deliver dependable Gigabit Ethernet connectivity across both single-mode and multimode fiber networks. Built to support high-speed optical communication, this transceiver complies with IEEE networking standards while offering exceptional signal integrity, low power consumption, and Digital Diagnostic Monitoring (DDM) capabilities for real-time operational insights. Operating at a wavelength of 1310 nm, the Cisco GLC-LH-SMD provides long-distance transmission of up to 10 kilometers over single-mode fiber and supports shorter multimode fiber connections when used with the appropriate mode conditioning patch cable.

General Information

• Manufacturer: Cisco
• Part Number: GLC-LH-SMD
• Product Category: Optical Fiber Transceiver Module

Technical Specifications

• Enclosure Type: Plug-in Module
• Interface: SFP (Mini-GBIC)
• Connectivity Technology: Wired
• Cabling Standards: 1000Base-LX, 1000Base-LH

Optical Performance

• Maximum Data Rate: 1.25 Gbps
• Operating Wavelength: 1310 nm
• Optical Fiber Standard: 1000Base-LX/LH
• Maximum Distance over Single-Mode Fiber: 10 km (6.2 miles)
• Maximum Distance over Multimode Fiber: 1 km (0.6 mile)
• Fiber Support: Single Mode and Multi Mode
• Transmission Mode: Full-Duplex
• Digital Diagnostic Monitoring (DDM): Supported
• Compatible Network Speed: 1000 Mbps
• MTBF: 200,000 Hours

Interface and Port Configuration

• Port Type: 1 × 1000Base-LX/LH
• Connector Type: LC Duplex
• Interface Standard: SFP (Mini-GBIC)
• Local Connector: Fiber Optic LC Duplex

Power Efficiency

• Minimum Transmit Power: -9 dB
• Maximum Transmit Power: 3 dB
• Typical Power Consumption: 1 Watt

Standards Compliance

• IEEE 802.3ah-2004 Compliant
• SFF-8472 MSA Compliant
• Supports Digital Optical Monitoring (DOM/DDM)

Environmental Specifications

• Operating Temperature: 0°C to 70°C (32°F to 158°F)
• Storage Temperature: -40°C to 85°C (-40°F to 185°F)
• Operating Humidity: 5% to 95% Relative Humidity

Ideal Use Cases

• Enterprise LAN infrastructure
• Campus backbone networks
• Metropolitan Area Networks (MAN)
• Data center optical interconnections
• Core and distribution switching
• High-speed server connectivity
• Fiber aggregation networks
• Business-critical Gigabit Ethernet deployments

Compatibility

• Cisco Catalyst 2960 Series
• Cisco Catalyst 2960-S Series
• Cisco Catalyst 2960-X Series
• Cisco Catalyst 3560 Series
• Cisco Catalyst 3560-E Series
• Cisco Catalyst 3560-X Series
• Cisco Catalyst 3750 Series
• Cisco Catalyst 3750-E Series
• Cisco Catalyst 3750-X Series
• Cisco Catalyst 3850 Series
• Cisco Catalyst 4500 Series
• Cisco Catalyst 4900 Series
• Cisco Catalyst 6500 Series
• Cisco Catalyst 6800 Series
• Cisco Nexus 2000 Fabric Extenders
• Cisco Nexus 3000 Series
• Cisco Nexus 5000 Series
• Cisco Nexus 7000 Series
• Cisco ASR 1000 Series Routers
• Cisco ISR 1900, 2900, and 3900 Series Integrated Services Routers
• Cisco ME 3400 and ME 3600 Series Ethernet Switches
• Cisco Industrial Ethernet (IE) Switches with 1G SFP slots

Cisco GLC-LH-SMD 1GBPS Single Mode Transceiver Module

The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category serves as an essential component in enterprise networking environments that require dependable optical communication, consistent Gigabit Ethernet performance, and long-distance fiber connectivity. Organizations deploying modern network infrastructures rely on optical transceiver modules to establish stable communication links between switches, routers, servers, storage platforms, security appliances, and other networking devices. This category supports scalable optical networking strategies while helping businesses maintain reliable data transmission across campus, metropolitan, and enterprise environments.

As organizations continue expanding their digital operations, network reliability becomes increasingly important. Business applications, unified communications, cloud services, virtualization platforms, and centralized storage systems all depend upon dependable connectivity. The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category enables stable optical communication while supporting enterprise networking requirements for performance, compatibility, scalability, and operational efficiency.

Single mode optical networking has become a preferred solution for enterprises requiring communication across extended distances. Unlike traditional copper cabling, fiber optic infrastructure supports greater transmission ranges while reducing susceptibility to electromagnetic interference. These characteristics make single mode optical technology suitable for enterprise campuses, branch office connectivity, government facilities, healthcare organizations, educational institutions, manufacturing environments, financial service providers, and large commercial buildings.

Optical Fiber Communication Technology

Fiber optic communication utilizes light signals to transfer digital information through specialized glass fiber. This transmission method provides numerous advantages over electrical communication by supporting higher transmission quality, improved signal consistency, and greater distance capabilities. The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category supports these networking objectives while maintaining compatibility with enterprise Gigabit Ethernet infrastructure.

Optical communication contributes to stable application performance by reducing transmission errors and preserving signal integrity across long network connections. Organizations that rely on centralized computing resources, distributed branch offices, cloud platforms, virtualization infrastructure, and enterprise collaboration systems benefit from dependable fiber optic connectivity.

Network administrators frequently select fiber optic communication to improve infrastructure reliability while preparing enterprise networks for future expansion. The ability to support growing communication demands without extensive infrastructure replacement makes optical networking an attractive investment for organizations seeking long-term operational efficiency.

Single Mode Fiber Advantages

Single mode fiber provides exceptional transmission performance through a narrow optical core that minimizes light dispersion during communication. The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category is designed to operate within single mode fiber environments where reliable long-distance communication is required.

Compared with multimode fiber, single mode infrastructure offers improved signal quality across extended transmission distances. Organizations implementing campus-wide networking, regional office communication, industrial facility integration, or metropolitan networking projects often prioritize single mode fiber because of its efficiency and scalability.

The consistent performance provided by single mode optical communication helps organizations maintain dependable access to applications, storage resources, communication systems, monitoring platforms, and centralized management environments.

Gigabit Ethernet Enterprise Connectivity

Gigabit Ethernet remains a widely deployed networking standard throughout enterprise environments. The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category enables organizations to establish dependable Gigabit Ethernet connections while supporting modern network architectures focused on stability, efficiency, and long-term infrastructure planning.

Enterprise networks frequently connect administrative offices, production facilities, distribution centers, retail locations, educational campuses, research laboratories, healthcare facilities, financial institutions, and government agencies. Reliable Gigabit Ethernet communication ensures these locations remain connected while supporting business-critical applications and centralized operational management.

High-quality optical communication enables organizations to transport voice traffic, video collaboration, cloud services, storage synchronization, application data, database communication, security monitoring information, authentication services, and operational analytics throughout the enterprise network.

Enterprise Application Performance

Business applications depend upon stable network infrastructure to maintain productivity and operational continuity. Enterprise resource planning systems, customer relationship management platforms, financial management software, engineering applications, manufacturing automation platforms, inventory management systems, human resource applications, and collaboration tools all require dependable communication between users and centralized computing resources.

The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category contributes to application stability by supporting reliable optical communication across enterprise network infrastructure. Stable connectivity minimizes communication interruptions while improving the overall user experience.

Organizations operating mission-critical business applications benefit from optical networking solutions capable of maintaining consistent data transmission throughout daily operations.

Centralized Resource Access

Modern enterprises frequently centralize computing resources within dedicated server rooms, data centers, or cloud-connected infrastructure. Users throughout the organization access these resources using high-speed network connections that depend upon reliable optical communication.

The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category enables dependable connectivity between distributed users and centralized services. Consistent network communication supports efficient access to databases, document repositories, enterprise software, collaboration platforms, storage systems, and security infrastructure.

Centralized resource management simplifies administration while allowing organizations to optimize hardware utilization, improve security management, and streamline operational processes.

Long Distance Optical Networking

Many organizations require communication across significant physical distances. Multiple buildings, branch offices, warehouse facilities, manufacturing locations, and regional operations often depend upon reliable fiber optic communication to maintain integrated business operations. The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category supports long-distance networking by providing optical communication designed for single mode fiber infrastructure.

Long-distance optical networking allows enterprises to consolidate information technology resources while maintaining efficient communication between geographically separated locations. This approach supports centralized application hosting, unified security management, disaster recovery planning, backup operations, and business continuity initiatives.

Campus Networking Solutions

Educational institutions, healthcare organizations, government agencies, and corporate headquarters frequently operate campus environments consisting of multiple interconnected buildings. Fiber optic communication enables these buildings to function as part of a unified networking environment while maintaining dependable application performance.

The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category supports campus networking projects requiring reliable communication between administrative buildings, research facilities, classrooms, medical centers, laboratories, production areas, and centralized data processing environments.

Campus fiber infrastructure improves operational efficiency by allowing centralized management of computing resources, communication systems, security platforms, and enterprise applications.

Metropolitan Network Connectivity

Organizations operating across urban environments frequently establish metropolitan optical communication links connecting branch offices, customer service centers, production facilities, and administrative headquarters. Single mode optical networking provides dependable communication suitable for these extended deployments.

The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category supports metropolitan networking initiatives by enabling consistent optical transmission across longer distances while maintaining compatibility with enterprise networking equipment.

Metropolitan networking contributes to improved collaboration, centralized information management, and efficient resource sharing between distributed organizational locations.

Data Center Connectivity and Enterprise Storage Networks

The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category plays an important role within modern data center environments where reliable communication between servers, storage platforms, network switches, security appliances, virtualization clusters, and management systems is essential. Data centers operate continuously and require networking components capable of delivering dependable optical communication while supporting enterprise workloads throughout every hour of operation.

Enterprise data centers process significant volumes of application traffic generated by internal users, cloud services, remote offices, business partners, and customer-facing platforms. Stable optical connectivity contributes to uninterrupted communication between critical infrastructure components, allowing organizations to maintain business operations without unnecessary network disruptions.

As organizations continue expanding digital services, the need for dependable fiber optic infrastructure becomes increasingly important. High-quality transceiver modules support communication between aggregation switches, core networking equipment, storage arrays, backup appliances, virtualization hosts, and security monitoring platforms while maintaining consistent Gigabit Ethernet performance.

Server Infrastructure Connectivity

Enterprise servers support a wide variety of operational functions, including database processing, business applications, web services, authentication, virtualization, messaging, analytics, and centralized management. Each server relies on dependable network connectivity to exchange information with users and other systems throughout the enterprise infrastructure.

The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category enables stable communication between server environments and enterprise switching infrastructure. Reliable optical transmission supports continuous application availability while reducing communication interruptions that may affect productivity and operational efficiency.

Organizations operating dedicated server environments appreciate networking solutions that provide long-term reliability, simplified maintenance, and dependable compatibility with existing enterprise infrastructure.

Storage Area Network Communication

Storage systems represent one of the most valuable components within enterprise information technology environments. Organizations maintain centralized storage platforms for databases, application files, virtual machine images, backup repositories, document management systems, multimedia resources, and operational records.

The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category contributes to dependable storage communication by supporting optical connections between storage devices, network switches, backup systems, and application servers. Stable connectivity improves access to shared resources while supporting efficient data movement throughout the enterprise infrastructure.

Reliable storage networking also contributes to business continuity by enabling consistent backup operations, disaster recovery planning, and information availability across multiple organizational locations.

Cloud Computing and Hybrid Infrastructure

Cloud computing continues transforming enterprise information technology strategies. Organizations increasingly integrate public cloud services, private cloud environments, virtualization platforms, and traditional infrastructure into unified networking architectures. The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category supports these environments by providing dependable optical communication between network devices responsible for cloud connectivity.

Hybrid infrastructure requires reliable communication between on-premises resources and cloud-hosted applications. Stable optical networking ensures business applications, storage systems, identity management platforms, monitoring solutions, and communication services remain accessible throughout distributed environments.

Network architects frequently design hybrid infrastructures that combine centralized computing resources with cloud-based scalability. Optical transceiver modules contribute to these designs by maintaining efficient communication across interconnected networking platforms.

Virtualization Platform Support

Virtualization technologies allow organizations to maximize hardware utilization while improving deployment flexibility and simplifying infrastructure management. Virtual machines, container platforms, and software-defined environments depend upon reliable networking to communicate with storage resources, application servers, users, and management systems.

The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category supports virtualization infrastructure by enabling dependable optical communication between virtualization hosts and enterprise switching equipment. Consistent connectivity helps maintain workload availability while supporting efficient resource utilization.

Virtualization environments also benefit from centralized administration, simplified workload migration, and improved operational efficiency through dependable networking infrastructure.

Private Cloud Networking

Private cloud deployments enable organizations to maintain greater control over computing resources while delivering cloud-like flexibility to internal users. Reliable optical communication forms an essential part of private cloud infrastructure by connecting compute clusters, storage systems, security platforms, and network management solutions.

The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category supports private cloud environments where consistent communication contributes to application performance, workload availability, and centralized infrastructure management.

Organizations deploying private cloud solutions often prioritize scalable networking components capable of supporting future infrastructure expansion while maintaining dependable operational performance.

Network Reliability and Operational Stability

Reliable networking infrastructure directly influences organizational productivity, customer satisfaction, and business continuity. Every communication link within an enterprise network contributes to the overall performance of business applications, collaboration platforms, security systems, and centralized services. The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category supports these operational objectives by providing dependable optical communication for enterprise networking environments.

Network administrators prioritize components that demonstrate consistent performance over extended operational periods. Stable optical transmission reduces communication errors while supporting predictable application behavior throughout changing workload conditions.

Dependable networking infrastructure also simplifies maintenance planning because administrators spend less time addressing unexpected connectivity issues and more time improving strategic technology initiatives.

Continuous Business Operations

Organizations increasingly depend upon digital services to support daily operations. Manufacturing systems, customer support platforms, healthcare applications, educational resources, financial transactions, logistics management, and communication tools all require uninterrupted network connectivity.

The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category contributes to continuous business operations by supporting reliable optical communication between essential infrastructure components. Stable network connectivity enables organizations to maintain productivity while reducing operational risk associated with communication failures.

Business continuity planning frequently incorporates dependable fiber optic networking as part of broader infrastructure resilience strategies designed to support long-term organizational success.

Infrastructure Expansion Flexibility

Enterprise networks rarely remain static. New departments, branch offices, production facilities, cloud services, and business applications continuously create additional networking requirements. Organizations therefore benefit from infrastructure designed to accommodate future expansion without requiring complete architectural redesign.

The Cisco GLC-LH-SMD 1GBPS Single Mode Optical Fiber Transceiver Module category supports flexible infrastructure planning by integrating with scalable enterprise networking platforms. As organizations grow, optical communication can be extended to additional locations while preserving compatibility with established networking environments.

This scalability helps protect technology investments while enabling network administrators to expand communication capabilities according to evolving business objectives, operational priorities, and infrastructure modernization initiatives.