GLC-LH-SM Cisco GBIC-SFP Transceiver Module LC Connector

Cisco GLC-LH-SM 1000BASE-LX/LH SFP Transceiver Module

The Cisco GLC-LH-SM is a hot-swappable Gigabit Ethernet SFP transceiver module designed to provide reliable, high-speed fiber optic connectivity for enterprise, campus, and data center networking environments. Engineered for dependable long-distance communication, this compact mini-GBIC module utilizes a duplex LC optical interface and operates at a 1310 nm wavelength to deliver stable 1 Gbps data transmission across both single-mode and compatible multi-mode fiber installations. Its flexible design enables quick installation or replacement without interrupting network operations, making it an excellent choice for organizations seeking scalable and efficient fiber networking solutions.

General Information

• Manufacturer: Cisco
• Part Number: GLC-LH-SM
• Product Type: Gigabit Ethernet SFP Transceiver Module

Technical Specifications

• Form Factor: Hot-swappable SFP (Mini-GBIC)
• Interface: 1 x LC Duplex
• Network Technology: 1000BASE-LX/LH
• Connectivity Technology: Wired
• Supported Media: Optical Fiber
• Fiber Modes: Single-Mode and Compatible Multi-Mode
• Optical Wavelength: 1310 nm
• Maximum Data Rate: 1 Gbps
• Data Link Protocol: Gigabit Ethernet
• IEEE Standard: IEEE 802.3z

SFP Module

• Supports Gigabit Ethernet connectivity.
• Operates at a 1 Gbps data transmission rate.
• Uses a 1310 nm optical wavelength.
• Designed for dependable long-range fiber communication.
• Provides stable signal integrity across supported fiber types.

Hot-Swappable Design

• Hot-swappable SFP form factor.
• No network interruption during replacement.
• Simplifies hardware maintenance.
• Supports rapid infrastructure upgrades.
• Ideal for mission-critical networking environments.

Optical Interface

• One LC duplex optical interface.
• Designed for 1000BASE-LX/LH networking.
• Supports wired fiber communication.
• Compatible with enterprise optical infrastructures.

Fiber Media Support

• Supports optical fiber media.
• Compatible with 9/10 µm single-mode fiber.
• Supports 50 µm multi-mode fiber.
• Supports 62.5 µm multi-mode fiber.
• Optimized for Gigabit optical communication.

High-Speed Data Transmission

• 1 Gbps maximum throughput.
• IEEE 802.3z compliant.
• Supports Gigabit Ethernet protocol.
• Compatible with 1000BASE-LX and 1000BASE-LH cabling standards.
• Reliable full-duplex communication.

Stable Operating Conditions

• Operating temperature from 32°F to 158°F (0°C to 70°C).
• Operating humidity between 30% and 70% relative humidity.
• Designed for continuous business operation.
• Maintains consistent optical performance under recommended conditions.

Compatibility

• Cisco 3825, 3845, and 7301 routers
• Cisco ASA 5545-X Firewall Edition
• Cisco Catalyst 2960 and 3560 series switches
• Cisco 3750 and 4500 Series Supervisor Engine
• Cisco Catalyst Express 500 and ME 2400 series switches

Cisco GLC-LH-SM GBIC-SFP Transceiver Module 

The Cisco GLC-LH-SM GBIC-SFP Transceiver Module LC Connector category represents an essential component within modern fiber optic networking environments. Organizations that depend on reliable data transmission, scalable infrastructure, and long-distance optical communication frequently deploy this type of transceiver module to establish stable connections between switches, routers, storage devices, security appliances, and enterprise networking equipment. Designed for Gigabit Ethernet deployments, this category supports high-quality optical communication while maintaining compatibility with a wide range of enterprise networking platforms.

Fiber optic networking continues to evolve as businesses require faster communication, lower latency, enhanced reliability, and simplified infrastructure management. The Cisco GLC-LH-SM GBIC-SFP Transceiver Module LC Connector category addresses these requirements by supporting optical transmission over single-mode fiber while offering flexibility for deployments across campus environments, enterprise offices, metropolitan networks, educational institutions, healthcare facilities, industrial operations, and cloud infrastructure.

As enterprise networks continue expanding across multiple buildings, remote offices, and geographically distributed locations, optical transceiver modules remain fundamental building blocks for dependable communication. Network administrators value solutions that provide consistent signal quality, efficient optical performance, and seamless compatibility with existing network architectures.

Optical Communication Architecture

Optical networking differs significantly from traditional copper-based communication by utilizing light signals transmitted through fiber optic cables. This transmission method offers greater distance capabilities, improved resistance to electromagnetic interference, and higher overall reliability. The Cisco GLC-LH-SM GBIC-SFP Transceiver Module LC Connector category enables organizations to benefit from these advantages while supporting enterprise Gigabit Ethernet infrastructure.

Optical communication helps organizations establish reliable connections between mission-critical systems without introducing excessive signal degradation. Long-distance communication between network closets, server rooms, administrative buildings, manufacturing facilities, and data centers becomes significantly more efficient through fiber optic deployment strategies.

Reliable optical transmission supports numerous business operations including application access, cloud communication, storage synchronization, security monitoring, voice communication, video collaboration, and enterprise resource management.

LC Connector Technology

The LC connector has become one of the most widely adopted fiber optic connector standards within enterprise networking environments. Its compact design allows greater port density while maintaining dependable optical alignment. The Cisco GLC-LH-SM GBIC-SFP Transceiver Module LC Connector category incorporates LC connectivity to simplify deployment within high-density switching platforms and modular routing equipment.

Network engineers appreciate LC connectors because they provide secure physical connections while supporting efficient cable management inside network cabinets. The compact connector design helps optimize rack utilization without compromising accessibility during maintenance or infrastructure upgrades.

The standardized connector format also simplifies replacement procedures, allowing organizations to maintain consistent cabling practices across multiple facilities while reducing installation complexity.

Enterprise Fiber Infrastructure

Modern enterprises increasingly rely on fiber optic infrastructure to support growing application demands and expanding network traffic. The Cisco GLC-LH-SM GBIC-SFP Transceiver Module LC Connector category contributes to these environments by enabling dependable Gigabit Ethernet connectivity between various networking devices.

Core switches with distribution switches, distribution switches with access switches, routers with aggregation equipment, storage networks with server clusters, virtualization hosts with storage infrastructure, security appliances with network cores, wireless controllers with backbone switches, monitoring platforms with centralized management systems, disaster recovery facilities with production environments, and cloud gateway infrastructure with enterprise data centers.

Each connection contributes to overall network stability, making high-quality optical transceiver modules an important component of enterprise infrastructure planning.

Network Backbone Connectivity

The network backbone carries significant volumes of enterprise traffic between major infrastructure components. Reliable optical communication within the backbone directly influences application responsiveness, business continuity, and operational efficiency. Cisco GLC-LH-SM GBIC-SFP Transceiver Module LC Connector solutions support backbone deployments requiring dependable Gigabit Ethernet communication over optical media.

Backbone networks frequently transport data generated by enterprise applications, collaboration platforms, storage environments, virtualization infrastructure, cloud services, database systems, authentication platforms, security monitoring applications, and centralized management solutions.

Stable optical connectivity minimizes communication interruptions while maintaining consistent performance throughout the enterprise network.

Campus Network Integration

Educational campuses, healthcare systems, corporate headquarters, government facilities, and industrial complexes often consist of multiple interconnected buildings. Fiber optic communication enables these buildings to function as a unified networking environment while supporting centralized services and distributed operations.

The Cisco GLC-LH-SM GBIC-SFP Transceiver Module LC Connector category assists network administrators in extending reliable optical communication across campus environments without sacrificing performance or infrastructure flexibility.

Campus deployments benefit from dependable connectivity supporting administrative applications, research systems, security infrastructure, classroom technology, multimedia distribution, enterprise communications, and centralized authentication services.

Single Mode Fiber Communication

Single-mode fiber remains the preferred transmission medium for long-distance optical communication within enterprise and service provider environments. The Cisco GLC-LH-SM GBIC-SFP Transceiver Module LC Connector category is designed to support single-mode fiber installations where consistent signal quality and extended transmission distances are required.

Unlike multimode fiber, single-mode fiber utilizes a smaller core that allows light to travel with minimal dispersion. This design supports more efficient long-distance communication while preserving signal integrity across extended network links.

Organizations selecting single-mode fiber frequently prioritize infrastructure longevity, future scalability, improved transmission efficiency, and reduced signal degradation over large physical distances.

Long Distance Network Links

Many organizations maintain communication links spanning multiple buildings, campuses, manufacturing sites, distribution centers, branch offices, or regional facilities. The Cisco GLC-LH-SM GBIC-SFP Transceiver Module LC Connector category supports these long-distance deployments by providing dependable optical communication suitable for enterprise networking requirements.

Long-distance connectivity enables centralized IT management while allowing geographically separated facilities to access shared applications, storage resources, communication platforms, and security services. Reliable optical transmission reduces operational complexity by creating a unified enterprise networking environment.

Network architects often incorporate long-distance optical communication into business continuity strategies, disaster recovery planning, centralized monitoring initiatives, and hybrid cloud integration projects.

Signal Integrity

Maintaining signal integrity represents a primary objective within fiber optic networking. The Cisco GLC-LH-SM GBIC-SFP Transceiver Module LC Connector category contributes to stable communication by supporting precise optical transmission characteristics that reduce communication errors and improve network consistency.

High signal quality improves application responsiveness while supporting continuous communication between interconnected enterprise systems. Consistent optical performance also contributes to efficient troubleshooting and simplified network maintenance because administrators experience fewer transmission-related issues during normal operations.

Gigabit Ethernet Network Performance

Gigabit Ethernet continues serving as a foundational networking technology across enterprise environments. Although higher-speed technologies continue expanding throughout large data centers, Gigabit Ethernet remains widely deployed within campus networks, branch offices, administrative facilities, manufacturing environments, educational institutions, and healthcare organizations.

The Cisco GLC-LH-SM GBIC-SFP Transceiver Module LC Connector category enables reliable Gigabit Ethernet communication while integrating seamlessly into existing network architectures designed around scalable optical infrastructure.

Gigabit connectivity supports daily enterprise operations including document management, enterprise software, unified communications, collaboration platforms, cloud applications, storage synchronization, backup operations, network monitoring, endpoint management, and secure information exchange.

Business Application Support

Enterprise applications require consistent network performance to maintain productivity across departments and operational teams. Optical connectivity supports application responsiveness by providing dependable communication between users, servers, storage resources, and cloud platforms.

Applications benefiting from reliable optical communication include customer relationship management platforms, enterprise resource planning systems, database applications, accounting software, inventory management systems, engineering platforms, manufacturing automation systems, collaboration suites, business intelligence platforms, and document management environments.

Reliable network infrastructure directly contributes to user productivity while reducing communication delays that can impact business operations.

Voice and Video Communications

Unified communications platforms continue expanding throughout enterprise environments. Voice communication, video conferencing, digital collaboration, virtual meetings, and multimedia content distribution all depend upon stable network infrastructure capable of maintaining consistent communication quality.

The Cisco GLC-LH-SM GBIC-SFP Transceiver Module LC Connector category supports optical networking environments where voice and video applications coexist alongside traditional enterprise traffic. Reliable fiber communication minimizes interruptions while supporting efficient collaboration across geographically distributed teams.