QSFP-40G-XSR4 Arista 40GBASE QSFP+ 850nm Transceiver

Arista 40GBASE QSFP+ 850nm Transceiver

The Arista QSFP-40G-XSR4 optical module delivers reliable 40GBASE-XSR4 connectivity with advanced performance. Operating at 850nm wavelength, this transceiver is optimized for multi-mode fiber (MMF) deployments, ensuring efficient data transmission across modern data centers.

Main Information

• Manufacturer: Arista Networks
• Part Number: QSFP-40G-XSR4
• Device Type: Optical Transceiver

Technical Specifications

• Data Rate: 40GBPS
• Form Factor: QSFP+

Optical Characteristics

• Wavelength: 850nm VCSEL technology
• Fiber Type: Multi-Mode Fiber (MMF)
• Connector: MPO/MTP-12 interface

Transmission Distance

OM3 Fiber

• Maximum reach: 300 meters

OM4 Fiber

• Maximum reach: 400 meters

Power & Environmental Range

• Power Consumption: Maximum 1.5W
• Operating Temperature: 0°C to 70°C (standard commercial range)

Diagnostics & Monitoring

• DOM/DDM Support: Yes, enabling real-time optical monitoring

Compliance & Standards

• Compliant Standards: QSFP+ MSA
• IEEE Protocols: 802.3ba 40GBASE-SR4, 40GBASE-eSR4

Arista QSFP-40G-XSR4 40GBASE QSFP+ Transceiver Overview

The Arista QSFP-40G-XSR4 40GBASE-XSR4 QSFP+ 850nm 300m/400m Transceiver Module is designed to deliver reliable high-bandwidth connectivity for modern enterprise data centers, cloud infrastructures, virtualization environments, and large-scale network deployments. This advanced optical transceiver module supports 40 Gigabit Ethernet connectivity while maintaining low power consumption, stable optical performance, and seamless compatibility with Arista networking equipment. Built to satisfy demanding networking requirements, the QSFP-40G-XSR4 module provides dependable data transmission for organizations that require exceptional network throughput and reduced latency.

As network architectures continue to evolve toward higher bandwidth and improved efficiency, the need for scalable optical transceivers becomes increasingly important. The Arista QSFP-40G-XSR4 module addresses these challenges with short-range multimode fiber connectivity optimized for high-density switching environments. Featuring 850nm VCSEL technology and supporting transmission distances up to 300 meters on OM3 multimode fiber and 400 meters on OM4 multimode fiber, this transceiver module ensures flexible deployment across various networking infrastructures.

Advanced 40GBASE-XSR4 Optical Connectivity Technology

High-Speed Data Transmission Capabilities

The Arista QSFP-40G-XSR4 transceiver module supports 40 Gigabit Ethernet communication using the 40GBASE-XSR4 standard. This technology enables ultra-fast data transfer rates suitable for enterprise-level applications, cloud computing platforms, and high-performance storage networks. By utilizing four independent optical lanes operating simultaneously, the module achieves aggregate throughput of 40Gbps while maintaining signal integrity and operational efficiency.

Modern networking infrastructures rely heavily on consistent and uninterrupted high-speed communication between servers, storage systems, and core switching equipment. The Arista QSFP-40G-XSR4 module helps eliminate network bottlenecks by delivering stable data transmission across high-density environments. This capability is especially beneficial for virtualization platforms, distributed applications, and large-scale data analytics operations where rapid data movement is essential.

850nm VCSEL Laser Technology

The module utilizes advanced 850nm Vertical Cavity Surface Emitting Laser technology to provide efficient optical signal generation. VCSEL-based transceivers are widely recognized for their low power consumption, compact design, and excellent reliability. The 850nm wavelength is optimized specifically for multimode fiber applications, enabling cost-effective high-speed optical communication within data center infrastructures.

VCSEL technology contributes significantly to improved thermal efficiency and lower operational costs. Since modern data centers prioritize energy-efficient hardware to minimize cooling requirements and electricity consumption, the QSFP-40G-XSR4 transceiver becomes an ideal solution for sustainable networking deployments. Its optimized optical design supports stable long-term performance while maintaining high signal accuracy.

Optimized Transmission Distance and Fiber Compatibility

Support for OM3 and OM4 Multimode Fiber

The Arista QSFP-40G-XSR4 module supports multimode fiber cabling, making it suitable for short-range data center interconnections. The module can transmit data up to 300 meters over OM3 multimode fiber and up to 400 meters over OM4 multimode fiber. This flexibility allows network administrators to deploy the transceiver within existing fiber infrastructures while maintaining high-speed connectivity.

OM3 and OM4 multimode fibers are commonly used in enterprise networking environments due to their cost-effectiveness and superior performance for short-distance optical communication. The compatibility of the QSFP-40G-XSR4 module with these fiber standards simplifies network upgrades and reduces infrastructure replacement costs.

Efficient Short-Range Data Center Networking

Short-range optical transceivers play a vital role in spine-leaf architectures, top-of-rack switching deployments, and inter-switch communication. The Arista QSFP-40G-XSR4 module is engineered specifically for these scenarios, delivering high-speed connectivity with minimal signal degradation. This enables efficient communication between aggregation switches, compute clusters, and storage platforms.

In large-scale cloud environments, rapid data transmission between servers and switches is essential for maintaining application responsiveness and workload performance. The QSFP-40G-XSR4 transceiver ensures dependable low-latency communication, supporting demanding workloads such as artificial intelligence processing, big data analysis, and high-frequency transaction systems.

QSFP+ Form Factor and High-Density Network Deployment

Compact QSFP+ Interface Design

The Quad Small Form-Factor Pluggable Plus design enables high-density port configurations while minimizing physical space requirements within networking equipment. Data center operators can deploy multiple QSFP+ transceivers within compact switch chassis to maximize bandwidth availability without increasing rack space consumption.

The compact architecture of the QSFP+ form factor is particularly beneficial in modern hyperscale environments where efficient space utilization is critical. By supporting multiple high-speed interfaces within a limited physical footprint, the Arista QSFP-40G-XSR4 module contributes to scalable network growth and simplified infrastructure management.

Hot-Pluggable Functionality

The module supports hot-swappable installation, allowing network administrators to insert or replace transceivers without shutting down networking equipment. This feature significantly reduces maintenance downtime and improves operational flexibility in mission-critical environments.

Hot-pluggable capability is especially important in enterprise data centers that require continuous availability. Administrators can perform hardware upgrades, maintenance operations, or transceiver replacements while keeping network services operational. This minimizes service interruptions and supports high-availability networking strategies.

Arista Network Compatibility and Integration

Designed for Arista Switching Platforms

The Arista QSFP-40G-XSR4 transceiver module is engineered specifically for compatibility with Arista network switches and routing platforms. This ensures seamless hardware recognition, optimized performance, and reliable interoperability across supported Arista devices.

Arista networking solutions are widely deployed in enterprise campuses, cloud infrastructures, financial institutions, and hyperscale data centers. The QSFP-40G-XSR4 module complements these environments by providing validated optical connectivity that aligns with Arista operating standards and network management systems.

Performance Benefits for Enterprise and Cloud Environments

Low Latency Data Communication

High-performance networking environments require minimal latency to support real-time applications and distributed computing workloads. The Arista QSFP-40G-XSR4 transceiver delivers low-latency optical communication, helping organizations maintain fast application response times and efficient data processing.

Applications such as cloud computing, financial trading systems, virtualization platforms, and media streaming infrastructures depend on rapid data transfer between interconnected systems. The transceiver module supports these requirements through high-speed optical transmission optimized for enterprise-scale operations.

Enhanced Network Scalability

Scalable network infrastructure is essential for organizations experiencing continuous data growth and increasing bandwidth requirements. The Arista QSFP-40G-XSR4 module supports scalable networking architectures by enabling high-capacity optical links between switches and servers.

As organizations expand their data center environments, the ability to scale network connectivity efficiently becomes increasingly important. The QSFP+ form factor combined with 40Gbps bandwidth allows administrators to expand network capacity without excessive infrastructure complexity.

Support for Virtualization and Cloud Computing

Virtualized data centers and cloud environments generate significant east-west traffic between virtual machines, storage arrays, and application servers. The Arista QSFP-40G-XSR4 transceiver supports these workloads by delivering stable high-speed connectivity capable of handling substantial traffic volumes.

Cloud service providers and enterprise IT departments benefit from the module’s ability to maintain reliable communication across virtualized infrastructures. This contributes to improved workload distribution, faster application deployment, and optimized resource utilization.

Technical Specifications and Optical Architecture

40 Gigabit Ethernet Standard Compliance

The module complies with IEEE 40GBASE-XSR4 networking standards, ensuring interoperability with compatible networking equipment and adherence to industry optical communication requirements. Standard compliance is essential for maintaining compatibility across diverse network infrastructures and supporting consistent operational performance.

Organizations implementing standardized networking technologies benefit from easier integration, simplified maintenance, and improved future scalability. The Arista QSFP-40G-XSR4 module aligns with these objectives through adherence to recognized Ethernet standards.

Four-Lane Optical Transmission Design

The transceiver utilizes a parallel optical transmission architecture consisting of four independent transmit lanes and four receive lanes. Each lane operates at 10Gbps, collectively delivering total bandwidth of 40Gbps. This architecture enables efficient data handling while maintaining signal stability across multimode fiber connections.

Parallel optical communication improves transmission reliability and supports higher aggregate throughput compared to single-lane optical designs. This technology is particularly effective in high-density data center environments requiring consistent high-bandwidth connectivity.

MPO Connector Interface

The Arista QSFP-40G-XSR4 module typically utilizes an MPO optical connector interface to support parallel fiber communication. MPO connectivity simplifies cable management and enables efficient deployment of high-density optical links within modern networking infrastructures.

Data center operators benefit from streamlined cable organization and simplified installation procedures when using MPO-based optical solutions. The compact connector design supports efficient airflow management and contributes to organized rack configurations.

Energy Efficiency and Thermal Optimization

Low Power Consumption Characteristics

Power efficiency is an increasingly important consideration in modern data center operations. The Arista QSFP-40G-XSR4 transceiver module is engineered to deliver high-speed optical performance while maintaining relatively low power consumption.

Reduced energy usage contributes to lower operational expenses and supports environmentally sustainable IT infrastructure strategies. Efficient optical components help minimize overall power demands within large-scale network deployments.

Improved Thermal Management

Thermal stability is essential for maintaining reliable transceiver performance in high-density networking environments. The QSFP-40G-XSR4 module incorporates thermal optimization technologies designed to maintain stable operating temperatures during continuous high-speed data transmission.

Effective thermal management reduces the risk of overheating and contributes to longer hardware lifespan. In densely populated switch environments, maintaining proper airflow and thermal efficiency is critical for ensuring uninterrupted network operations.

Deployment Scenarios for the Arista QSFP-40G-XSR4 Module

Enterprise Data Centers

Enterprise data centers require robust and scalable networking infrastructure capable of supporting large volumes of application traffic. The Arista QSFP-40G-XSR4 module enables high-speed optical communication between core switches, aggregation layers, and server clusters.

Organizations deploying virtualization platforms, enterprise resource planning systems, and large-scale storage environments benefit from the module’s reliable 40Gbps connectivity. Its compatibility with multimode fiber infrastructure makes it a practical solution for enterprise networking modernization projects.

Cloud Computing Infrastructure

Cloud service providers rely on high-bandwidth optical networking to support dynamic workloads and large-scale virtual machine deployments. The QSFP-40G-XSR4 transceiver provides the throughput and reliability required for cloud networking operations.

Efficient communication between compute nodes, storage arrays, and networking switches is essential for maintaining cloud service responsiveness. The module’s high-speed optical performance supports workload scalability and optimized resource allocation within cloud environments.

High-Performance Computing Environments

High-performance computing clusters require ultra-fast interconnects capable of handling intensive data processing workloads. The Arista QSFP-40G-XSR4 module supports HPC environments by delivering stable low-latency connectivity between compute nodes and switching infrastructure.

Scientific research institutions, engineering organizations, and analytics platforms depend on rapid data transfer for parallel processing tasks. The module’s optical capabilities contribute to improved computational efficiency and accelerated data exchange.

Advantages of 40GbE Optical Networking

Increased Bandwidth Availability

Forty Gigabit Ethernet technology provides substantially higher bandwidth compared to traditional 10GbE networking solutions. This increased capacity supports modern applications that generate large amounts of network traffic, including virtualization, cloud services, streaming platforms, and enterprise analytics.

The Arista QSFP-40G-XSR4 module enables organizations to transition toward higher-performance networking infrastructures capable of supporting future data growth. Increased bandwidth availability also improves user experience by reducing network congestion and transmission delays.

Simplified Network Architecture

Deploying 40GbE connectivity can simplify network architectures by consolidating multiple lower-speed links into a single high-capacity optical connection. This reduces cable complexity, minimizes switch port consumption, and improves overall network efficiency.

Streamlined network architectures are easier to manage and maintain, particularly in large-scale enterprise environments. The QSFP-40G-XSR4 module supports these efficiency improvements through compact high-bandwidth optical connectivity.