GLC-BX40-D-I Cisco 1GBPS SFP SMF LC Transceiver Module

Cisco 1GBPS SMF LC Transceiver Module

The GLC-BX40-D-I Cisco SFP Transceiver is a high-quality optical networking module engineered for Gigabit Ethernet connectivity. It delivers dependable data transmission over single-mode fiber up to 40km, operating at 1550nm TX and 1310nm RX wavelengths.

General Information

• Brand: Cisco
• Model Number: GLC-BX40-D-I
• Device Category: Optical Transceiver Module

Technical Specifications

• Optimized for data networking
• Designed for optical communication systems

Interfaces & Ports

• Total Ports: 1
• Connector Type: LC/PC
• Port Details: 1 x LC/PC 1000Base-BX40-D Network

Media & Performance

• Media Type: Optical Fiber
• Fiber Mode: Single-mode

Networking Technology

• Ethernet Standard: Gigabit Ethernet
• Network Protocol: 1000Base-BX40-D

Physical Characteristics

• Height: 0.3"
• Width: 0.5"
• Depth: 2.2"
• Weight: Approx. 0.17 lb

Miscellaneous Information

• MSA Compliant for interoperability
• Compatible with Cisco Catalyst Series Switches:
  • 4503
  • 4503-E
  • 4504
  • 4506
  • 4506-E

Key Advantages

• Reliable long-distance transmission up to 40km
• Compact design for flexible deployment
• Supports high-speed Gigabit Ethernet
• Broad compatibility with Cisco Catalyst switches
• Industry-standard compliance ensures seamless integration

Cisco GLC-BX40-D-I 1GBPS SFP Transceiver Module Overview

The Cisco GLC-BX40-D-I 1GBPS SFP Transceiver Module is designed to deliver reliable Gigabit Ethernet connectivity across long-distance single-mode fiber networks. As organizations continue to expand their networking infrastructure, dependable optical transceivers play a critical role in maintaining high-speed communication between switches, routers, firewalls, industrial Ethernet devices, and enterprise network appliances. The GLC-BX40-D-I offers an efficient solution for businesses that require consistent data transmission over extended distances while minimizing fiber infrastructure requirements.

Built according to Cisco's rigorous engineering standards, this Small Form-Factor Pluggable transceiver supports bidirectional optical communication, allowing both transmitting and receiving data over a single strand of single-mode fiber. This advanced technology significantly reduces fiber deployment costs while maintaining exceptional signal quality, making it suitable for enterprise campuses, metropolitan networks, educational institutions, healthcare environments, industrial automation systems, government facilities, and telecommunications providers.

Designed for High-Performance Gigabit Ethernet Networks

Modern networking environments demand reliable optical communication capable of supporting increasing workloads. The Cisco GLC-BX40-D-I addresses these challenges by providing stable Gigabit Ethernet performance while ensuring compatibility with numerous Cisco networking platforms. Network administrators appreciate its hot-swappable design, allowing module replacement or upgrades without interrupting network operations.

The compact SFP form factor enables higher port density compared to older transceiver technologies. Organizations can maximize switch capacity while reducing rack space consumption, helping improve overall infrastructure efficiency. Since the module supports 1 Gigabit Ethernet applications, it remains an ideal solution for access networks, aggregation layers, branch offices, and remote facilities requiring dependable fiber connectivity.

Single-Mode Fiber Technology

Single-mode fiber has become the preferred medium for long-distance optical communication due to its extremely low attenuation and minimal signal distortion. The Cisco GLC-BX40-D-I fully leverages these characteristics to provide dependable transmission across extensive distances while maintaining excellent data integrity.

Unlike multimode fiber, single-mode fiber utilizes a narrow core that allows light signals to travel directly through the fiber with minimal reflection. This design dramatically reduces modal dispersion, resulting in superior bandwidth capabilities and improved network stability. Businesses deploying backbone infrastructure benefit from consistent communication even across geographically separated facilities.

Bi-Directional Optical Communication

One of the defining characteristics of the Cisco GLC-BX40-D-I is its bidirectional transmission capability. Instead of requiring two separate fiber strands for transmitting and receiving data, the module enables both directions of communication over a single optical fiber by utilizing different wavelengths.

This wavelength division multiplexing technology reduces cabling complexity while lowering infrastructure costs. Organizations planning new fiber deployments or upgrading existing installations can maximize available fiber resources without sacrificing performance or network reliability.

Advanced Optical Engineering

Precision Laser Transmission

The transceiver incorporates highly accurate optical laser technology engineered to provide stable signal generation throughout continuous operation. The precision transmitter ensures consistent optical output levels while minimizing fluctuations that could otherwise affect communication quality over extended fiber distances.

Carefully calibrated optical components contribute to predictable network behavior, allowing administrators to maintain dependable communication links across enterprise environments. Stable laser performance also supports reduced error rates and enhanced overall network efficiency.

Sensitive Optical Receiver

Receiving optical signals accurately is equally important as transmitting them. The Cisco GLC-BX40-D-I integrates a highly sensitive optical receiver capable of detecting weak incoming signals after long-distance transmission through single-mode fiber. This enhanced receiver sensitivity contributes significantly to reliable communication under varying environmental conditions.

The receiver architecture minimizes packet loss while maintaining stable link establishment even in demanding enterprise deployments where consistent connectivity is essential.

Hot-Pluggable SFP Architecture

Simplified Maintenance

The hot-pluggable nature of the Cisco GLC-BX40-D-I allows network engineers to install or replace the transceiver without shutting down the associated networking equipment. This capability minimizes maintenance windows and supports uninterrupted business operations.

Large enterprises operating around the clock particularly benefit from this feature because maintenance activities can be completed without affecting mission-critical services. Reduced downtime directly contributes to increased operational productivity.

Compact Small Form Factor

The standardized Small Form-Factor Pluggable design provides excellent flexibility across a broad range of Cisco networking devices. Multiple SFP ports can be integrated into a single switch, maximizing port density while conserving valuable rack space.

High-density switching environments benefit from simplified cable management, improved airflow, and more efficient equipment layouts, all of which contribute to better long-term infrastructure management.

Compatibility Across Cisco Networking Platforms

Enterprise Switch Integration

The Cisco GLC-BX40-D-I is engineered to integrate seamlessly with numerous Cisco Ethernet switches that support standard Gigabit SFP interfaces. This compatibility enables organizations to expand fiber connectivity without replacing existing switching hardware.

Enterprise networks often require flexible expansion capabilities as business requirements evolve. Standardized SFP compatibility ensures administrators can upgrade network links while preserving previous investments in Cisco infrastructure.

Router Connectivity

Routers deployed in branch offices, campuses, and metropolitan environments frequently require dependable optical uplinks. The GLC-BX40-D-I supports reliable Gigabit Ethernet communication between routers, enabling secure and stable data exchange across geographically dispersed locations.

Industrial Networking Support

Industrial Ethernet deployments present unique environmental challenges that require dependable communication equipment. The industrial-rated design of the Cisco GLC-BX40-D-I makes it appropriate for manufacturing facilities, utility infrastructure, transportation systems, and automation networks where consistent optical communication is essential.

Network Reliability and Stability

Continuous Data Transmission

Reliable network performance depends heavily on consistent optical signal integrity. The Cisco GLC-BX40-D-I is engineered to maintain dependable communication during prolonged periods of operation while minimizing transmission errors.

Stable data transfer contributes to improved application responsiveness, uninterrupted cloud connectivity, dependable file transfers, and efficient communication between distributed enterprise resources.

Error Reduction

Optical communication technology naturally provides immunity against many forms of electromagnetic interference that commonly affect copper networking solutions. This characteristic enables the Cisco GLC-BX40-D-I to deliver cleaner data transmission with fewer communication errors.

Reduced retransmissions improve overall network efficiency while supporting applications requiring dependable real-time communication.

Ideal Deployment Environments

Enterprise Campus Networks

Large campus environments often require reliable inter-building fiber connectivity. The Cisco GLC-BX40-D-I enables dependable Gigabit Ethernet communication between multiple buildings while supporting centralized IT management and resource sharing.

Educational Institutions

Schools, colleges, and universities rely heavily on high-speed networking to support classrooms, research laboratories, administrative departments, and student services. Long-distance fiber connectivity allows educational institutions to maintain seamless communication between separate facilities.

Healthcare Infrastructure

Hospitals and medical centers require dependable network performance for electronic medical records, diagnostic imaging systems, patient monitoring equipment, and secure communications. Optical networking minimizes interference while providing consistent data transmission essential for healthcare operations.

Government Networks

Government organizations frequently deploy secure optical infrastructure connecting multiple administrative buildings. Reliable Gigabit Ethernet communication supports document management systems, internal communications, surveillance infrastructure, and secure public services.

Financial Institutions

Banks and financial organizations demand uninterrupted network availability. Stable fiber communication enables secure transaction processing, database synchronization, and reliable branch connectivity while maintaining operational continuity.

Optical Performance Advantages

Signal Integrity

Maintaining optical signal quality across long fiber distances requires carefully engineered transmitter and receiver components. The Cisco GLC-BX40-D-I is optimized to preserve signal integrity, minimizing attenuation-related communication issues and ensuring dependable network performance.

Reduced Fiber Requirements

Bidirectional transmission technology significantly lowers fiber consumption by utilizing a single strand for both transmission directions. Organizations deploying extensive fiber networks benefit from reduced installation complexity, simplified cable routing, and lower infrastructure costs.

Energy-Efficient Network Operation

Optimized Power Consumption

Efficient power utilization has become increasingly important in modern data centers and enterprise networking environments. The Cisco GLC-BX40-D-I is engineered to provide dependable optical communication while maintaining efficient energy consumption, contributing to overall operational cost savings.

Thermal Efficiency

The compact design supports effective thermal management within high-density networking equipment. Stable operating temperatures contribute to improved long-term reliability while supporting continuous enterprise network operation.

Applications Across Multiple Industries

Telecommunications

Telecommunication providers utilize optical networking extensively to deliver broadband connectivity and carrier-grade communication services. Reliable Gigabit transceivers help maintain stable service delivery across distributed infrastructure.

Cloud Computing Facilities

Cloud infrastructure depends upon dependable interconnection between servers, storage systems, networking equipment, and management platforms. Optical communication enables consistent data exchange while supporting virtualized computing environments.

Transportation Networks

Transportation systems require dependable communication linking traffic management equipment, surveillance systems, operational control centers, and passenger information services. Optical networking delivers stable performance suitable for these demanding environments.

Professional Network Management

Standardized Cisco networking components simplify infrastructure management by providing predictable compatibility and consistent deployment procedures. Network administrators benefit from streamlined maintenance, easier troubleshooting, and improved operational efficiency across large-scale environments.

Optimizing Enterprise Fiber Infrastructure

Supporting Digital Transformation

Organizations embracing digital transformation require dependable networking infrastructure capable of supporting cloud applications, virtualization, unified communications, cybersecurity platforms, artificial intelligence workloads, and expanding enterprise connectivity requirements. The Cisco GLC-BX40-D-I contributes to these objectives by delivering stable optical communication across modern network architectures.

Efficient Resource Utilization

By reducing fiber requirements through bidirectional communication and supporting compact SFP deployment, organizations optimize both physical infrastructure and network resources. Improved utilization contributes to lower installation costs, simplified maintenance, and enhanced scalability as networking demands continue to evolve across enterprise environments.