QSFP-100G-LR4 Arista 100GBASE-LR4 QSFP Optics Transceiver

Product Overview of Arista QSFP-100G-LR4 Optics Transceiver

The Arista QSFP-100G-LR4 is a powerful 100GBASE-LR4 QSFP transceiver engineered for high-speed data transmission over single-mode fiber. With support for up to 10 kilometers, this module is ideal for enterprise backbones, telecom networks, and data center interconnects.

General Information

• Manufacturer: Arista
• Part Number: QSFP-100G-LR4
• Product Type: Optical Transceiver

Technical Specifications

• Form Factor: QSFP28 (Quad Small Form-factor Pluggable 28)
• Data Rate: 103.1 Gbps to 112 Gbps (25.78 Gbps per lane)
• Maximum Reach: 10 kilometers (6.2 miles)
• Fiber Type: Single-Mode Fiber (SMF)
• Connector Type: Duplex LC
• Optical Technology: LAN WDM (Wavelength Division Multiplexing)
• Modulation Format: NRZ (Non-Return to Zero)
• Transmitter Type: DFB (Distributed Feedback) Laser
• Receiver Type: PIN (Positive-Intrinsic-Negative) Photodetector
• Power Consumption: 3.5W to 4.5W maximum
• Operating Voltage: 3.3V standard supply
• Digital Diagnostics: Integrated real-time monitoring (DDM/DOM)

Lane Wavelength Grid

• Lane 0: 1295.56 nm
• Lane 1: 1300.05 nm
• Lane 2: 1304.58 nm
• Lane 3: 1309.14 nm

Environmental Specifications

Temperature Ranges

• Commercial: 0°C to 70°C (32°F to 158°F)
• Industrial: -40°C to 85°C (-40°F to 185°F)
• Storage: -40°C to 85°C (-40°F to 185°F)

Humidity

• Relative Humidity: 5% to 95% non-condensing

Efficiency

• Optimized for energy savings with low power draw
• Supports scalable data center deployments

Reliability

• Stable operation across varying environmental conditions
• Durable design for long-term use

Compatibility

• Works seamlessly with Arista networking systems
• Industry-standard LC connectors for easy integration

Use Cases

Enterprise Applications

• Ideal for corporate backbone connectivity
• Supports high-bandwidth workloads

Telecommunication Networks

• Perfect for long-distance backbone links
• Ensures consistent and reliable data delivery

Arista QSFP-100G-LR4 100GBASE-LR4 QSFP Optical Transceiver

The Arista QSFP-100G-LR4 100GBASE-LR4 QSFP optics module is engineered to deliver high-speed 100 Gigabit Ethernet connectivity across long-distance single-mode fiber infrastructures. Designed for modern enterprise networking, hyperscale cloud environments, carrier-grade infrastructure, and advanced data center applications, this optical transceiver provides stable and efficient data transmission over duplex SMF links up to 10 kilometers. Organizations deploying high-bandwidth network architectures benefit from the module’s ability to support demanding workloads, scalable routing environments, virtualization platforms, and latency-sensitive applications.

As networking infrastructures continue to evolve toward faster and more intelligent architectures, 100G optical connectivity has become a critical component in supporting traffic-intensive environments. The Arista QSFP-100G-LR4 transceiver supports this transformation by enabling reliable high-density interconnectivity between aggregation switches, spine-and-leaf topologies, routers, and core network equipment. Its compatibility with QSFP form factors allows data center operators to maximize port density while minimizing power consumption and cabling complexity.

Advanced 100G Optical Transmission Technology

The 100GBASE-LR4 standard utilizes four independent optical lanes, each operating at approximately 25Gbps, to achieve an aggregated 100Gbps throughput. This lane multiplexing technology enables the module to maintain consistent high-speed communication over long-distance single-mode fiber links while preserving signal integrity and reducing transmission errors. The LR4 optical specification is specifically designed for long-reach deployments where extended transmission distance is essential for inter-building connectivity, campus networking, and metropolitan infrastructure.

The Arista QSFP-100G-LR4 optics module incorporates wavelength division multiplexing technology that transmits four optical wavelengths over a pair of fibers. This efficient transmission architecture minimizes fiber utilization requirements while supporting large-scale network expansion initiatives. Enterprises looking to reduce operational overhead and simplify optical deployments often rely on LR4 technology to maintain streamlined infrastructure management.

Optimized Signal Integrity for Long-Distance Applications

Signal integrity is a fundamental requirement for any 100G networking environment. The Arista QSFP-100G-LR4 transceiver is designed with advanced optical components that help maintain low bit error rates and stable transmission quality across extended distances. The module’s internal circuitry and optical alignment mechanisms support clean signal propagation even in complex enterprise environments where electromagnetic interference and dense cabling infrastructures may impact overall performance.

Network architects implementing high-speed optical infrastructure require dependable performance consistency across all operational conditions. The LR4 transceiver supports this requirement by providing stable thermal characteristics, efficient power management, and optimized optical sensitivity. These features help reduce network disruptions and contribute to long-term infrastructure reliability.

Long-Reach Single-Mode Fiber Connectivity

The ability to support transmission distances up to 10 kilometers over duplex single-mode fiber makes the Arista QSFP-100G-LR4 module highly suitable for campus networking and distributed data center architectures. Large organizations frequently deploy multiple data halls or geographically separated server environments that require high-bandwidth interconnection. LR4 technology addresses these requirements by enabling dependable long-distance communication without requiring excessive signal regeneration equipment.

Single-mode fiber infrastructure remains a preferred choice for long-distance optical networking because of its reduced attenuation characteristics and superior bandwidth capacity. The QSFP-100G-LR4 transceiver leverages these advantages to deliver efficient optical transport suitable for evolving enterprise requirements. Businesses investing in future-ready infrastructure benefit from the scalability and flexibility associated with single-mode optical deployments.

Support for Inter-Data Center Networking

Inter-data center communication requires optical solutions capable of maintaining high throughput with minimal latency. The Arista QSFP-100G-LR4 transceiver supports these objectives by enabling reliable 100G connectivity between distributed infrastructure environments. Cloud providers, enterprise organizations, and colocation facilities commonly utilize LR4 optics for connecting separate facilities while ensuring continuous application availability and data synchronization.

As organizations adopt hybrid cloud strategies and distributed computing models, the need for resilient long-range optical communication becomes increasingly important. The LR4 module supports efficient workload mobility, disaster recovery replication, and large-scale storage synchronization by delivering dependable optical transport across extended distances.

High-Density QSFP Form Factor Benefits

The compact Quad Small Form-Factor Pluggable design allows network administrators to deploy high-capacity optical connectivity within space-constrained environments. Modern switches and routers frequently require high port density to support increasing traffic demands while maintaining manageable rack utilization. The Arista QSFP-100G-LR4 module enables organizations to maximize bandwidth availability without significantly increasing equipment footprint.

Efficient space utilization is particularly valuable in hyperscale environments where hundreds or thousands of optical connections may exist within a single facility. The QSFP architecture contributes to improved airflow management, simplified cable organization, and optimized power efficiency. These operational benefits help reduce infrastructure complexity while supporting scalable network growth.

Hot-Swappable Operational Flexibility

The hot-swappable design of the QSFP-100G-LR4 transceiver allows administrators to install or replace modules without interrupting network operation. This capability is essential for minimizing downtime during maintenance procedures, network upgrades, and capacity expansions. Organizations operating mission-critical infrastructure often prioritize hardware components that support uninterrupted service continuity.

Hot-swappable optical modules also simplify inventory management and maintenance workflows. Network engineers can rapidly replace faulty transceivers, deploy new optical links, or reconfigure network topology without extensive service disruption. This operational flexibility contributes to improved network availability and enhanced infrastructure resilience.

Enhanced Thermal Efficiency

Thermal management plays a significant role in maintaining long-term network stability and transceiver performance. The Arista QSFP-100G-LR4 optics module is engineered to support efficient heat dissipation, helping maintain operational stability in high-density networking environments. Data centers with large-scale switch deployments benefit from optical modules that minimize excessive thermal generation while sustaining high-speed transmission performance.

Optimized thermal characteristics contribute to longer hardware lifespan and improved reliability. Stable operating temperatures also help preserve signal quality and reduce the likelihood of transmission degradation during periods of sustained network activity.

Compatibility with Arista Networking Infrastructure

The Arista QSFP-100G-LR4 transceiver is designed for seamless integration with compatible Arista networking platforms, including data center switches, aggregation systems, and enterprise routing environments. Organizations deploying Arista infrastructure benefit from validated interoperability, optimized firmware compatibility, and consistent operational performance across the networking ecosystem.

Compatibility assurance is critical in high-performance networking environments where interoperability issues can negatively impact stability and throughput. Certified optical modules help reduce deployment risks while simplifying infrastructure management processes. Network administrators can deploy the QSFP-100G-LR4 transceiver with confidence in large-scale environments requiring predictable and dependable optical connectivity.

Support for Spine-and-Leaf Data Center Architectures

Spine-and-leaf architectures have become a standard design approach for modern data centers due to their scalability, low latency characteristics, and simplified east-west traffic management. The Arista QSFP-100G-LR4 module supports these architectures by enabling high-speed uplink and interconnect capabilities between spine switches and leaf switches.

As server virtualization, software-defined networking, and distributed computing applications continue to increase traffic volumes within data centers, 100G optical interconnects provide the bandwidth necessary to maintain optimal application performance. The LR4 transceiver helps organizations support rapid data movement while preserving efficient network operation.

Reliable Connectivity for Cloud Computing Platforms

Cloud infrastructure environments demand highly reliable optical connectivity to support dynamic workloads, virtualization clusters, and large-scale storage systems. The Arista QSFP-100G-LR4 module enables cloud providers and enterprise IT departments to maintain stable communication between compute nodes, storage arrays, and network aggregation layers.

Cloud-native applications frequently generate significant east-west traffic that requires low-latency transport across distributed infrastructure. High-capacity optical transceivers help prevent network bottlenecks while supporting scalable cloud expansion initiatives. The LR4 module’s long-distance capability also enables flexible data center placement strategies.

100GBASE-LR4 Optical Networking Advantages

The 100GBASE-LR4 standard offers multiple operational advantages for organizations implementing high-speed optical networking infrastructure. One of the primary benefits is the ability to support long-distance transmission without requiring complex optical amplification systems for standard enterprise deployments. This helps reduce infrastructure costs while simplifying deployment architecture.

Another important advantage involves efficient fiber utilization. By leveraging wavelength multiplexing technology, LR4 optics reduce the number of physical fiber strands required for high-speed communication. Organizations expanding network capacity can achieve greater scalability while minimizing cabling complexity and installation overhead.

Reduced Network Bottlenecks

Bandwidth congestion can significantly impact application performance, storage replication, and user experience. The Arista QSFP-100G-LR4 transceiver helps alleviate network bottlenecks by delivering consistent 100Gbps throughput for demanding workloads. High-capacity optical connectivity is especially valuable in environments supporting artificial intelligence applications, machine learning platforms, big data analytics, and virtualization clusters.

As enterprise traffic volumes continue to increase, organizations require scalable infrastructure capable of adapting to evolving requirements. The deployment of 100G optical modules supports future growth while helping maintain predictable network performance.

Low Latency Data Transport

Latency-sensitive applications such as financial trading systems, real-time analytics, video streaming, and distributed database environments require fast and stable communication channels. The QSFP-100G-LR4 transceiver contributes to low-latency networking by supporting high-speed optical transmission with minimal signal degradation. Reliable optical communication helps organizations maintain application responsiveness and operational efficiency.

High-performance computing environments particularly benefit from low-latency optical infrastructure. The ability to rapidly transfer large data volumes between compute resources supports faster processing cycles and improved workload execution.

Deployment Flexibility Across Multiple Industries

The Arista QSFP-100G-LR4 optics module supports deployment across a broad range of industries and networking scenarios. Enterprise organizations, telecommunications providers, educational institutions, healthcare networks, financial institutions, and government agencies all require reliable high-speed connectivity to support digital transformation initiatives.

Large-scale enterprise campuses frequently utilize LR4 optics for connecting multiple buildings, regional facilities, and centralized data centers. The module’s long-distance transmission capability enables efficient communication between distributed network environments while maintaining consistent bandwidth availability.

Telecommunications and Carrier Network Applications

Telecommunications providers require scalable optical infrastructure capable of supporting increasing customer bandwidth demands. The Arista QSFP-100G-LR4 transceiver enables carriers to expand network capacity while maintaining reliable long-range communication. Optical transport systems supporting mobile backhaul, internet exchange connectivity, and metro networking environments benefit from the module’s stable high-speed transmission characteristics.

Carrier-grade networking environments often require equipment capable of operating continuously under demanding conditions. The LR4 module’s robust design supports long-term operational reliability, helping service providers maintain network uptime and service quality.

Educational and Research Networking Infrastructure

Universities and research institutions frequently operate data-intensive applications involving scientific simulations, collaborative research projects, and high-capacity storage environments. The Arista QSFP-100G-LR4 transceiver supports these environments by providing fast optical communication between campus facilities, research clusters, and centralized computing resources.

Academic networking environments increasingly rely on high-speed optical infrastructure to support digital learning platforms, cloud-based collaboration tools, and advanced computational research. Long-distance 100G connectivity helps institutions maintain scalable and efficient network operation.

Operational Reliability and Infrastructure Scalability

Reliability remains one of the most important considerations in optical networking deployments. The Arista QSFP-100G-LR4 transceiver is designed to support stable long-term operation across enterprise and data center environments. Its advanced optical engineering contributes to dependable transmission quality, reduced packet loss, and consistent throughput under varying operational conditions.

Scalable infrastructure planning is equally important as organizations prepare for increasing network demands. Deploying 100G optical connectivity enables businesses to support future bandwidth growth without requiring extensive infrastructure redesign. The LR4 module provides a balance between immediate operational requirements and long-term scalability objectives.

Support for Virtualized and Software-Defined Networks

Modern IT infrastructures increasingly rely on virtualization and software-defined networking technologies to improve flexibility and resource utilization. These architectures generate substantial internal traffic that requires robust high-speed connectivity. The Arista QSFP-100G-LR4 transceiver supports these environments by delivering reliable optical transport capable of handling dynamic workload distribution and automated traffic management.

Software-defined environments benefit from scalable optical infrastructure that can adapt to changing operational requirements. High-capacity transceivers help maintain efficient communication between virtualized resources, orchestration platforms, and distributed applications.

Future-Ready Optical Networking Infrastructure

Investing in 100G optical technology positions organizations to accommodate future digital transformation initiatives and evolving application requirements. The Arista QSFP-100G-LR4 module supports infrastructure modernization strategies by providing dependable long-range optical communication suitable for next-generation enterprise networking environments.

Emerging technologies such as artificial intelligence, edge computing, advanced analytics, and high-capacity cloud services continue to increase the demand for scalable optical infrastructure. Organizations deploying reliable 100GBASE-LR4 connectivity can better support these technologies while maintaining operational efficiency and network performance.

Efficient Optical Integration for Modern Data Centers

Modern data center facilities require carefully integrated optical infrastructure capable of supporting rapid traffic growth, large-scale virtualization, and cloud-native workloads. The Arista QSFP-100G-LR4 transceiver simplifies optical integration by combining high bandwidth, long-distance capability, and compact form factor efficiency within a single networking component. Data center operators can implement streamlined optical architectures while preserving scalability and operational reliability.

The use of duplex single-mode fiber connectivity helps reduce excessive cabling complexity while supporting efficient long-range communication. Organized optical infrastructure improves airflow management, reduces maintenance challenges, and contributes to simplified infrastructure troubleshooting. Efficient cabling strategies become increasingly important as organizations expand their high-density networking deployments.

Consistent Performance in High-Traffic Environments

Enterprise and hyperscale networks frequently experience fluctuating traffic patterns caused by virtualization workloads, cloud application usage, storage synchronization, and real-time communication services. The Arista QSFP-100G-LR4 module is engineered to sustain consistent optical transmission performance during periods of heavy network utilization. Stable throughput characteristics help organizations avoid bandwidth interruptions and preserve application responsiveness.

High-speed optical communication also supports rapid data migration between storage environments and compute clusters. As organizations increasingly adopt distributed architectures and hybrid cloud models, dependable long-range optical transport becomes essential for maintaining efficient resource coordination.

Enhanced Infrastructure Efficiency

Infrastructure efficiency involves balancing performance, scalability, power consumption, and operational manageability. The QSFP-100G-LR4 transceiver contributes to these goals through compact hardware design, optimized optical transmission, and efficient power utilization. Network administrators benefit from simplified deployment procedures and reduced hardware overhead while maintaining enterprise-grade connectivity performance.

Efficient optical modules also contribute to lower operational costs by minimizing excessive cooling requirements and reducing infrastructure expansion complexity. These advantages support long-term data center optimization strategies and sustainable network growth initiatives.