CFP-40G-SR4 Cisco Transceiver Module 40GBPS MMF 100m 850nm

Highlights of Cisco 40GBPS Transceiver

The Cisco CFP-40G-SR4 is a high-speed Ethernet CFP transceiver module equipped with an MPO connector. Designed for reliable short-range communication, this optical device ensures efficient data transfer across enterprise and data center networks.

Product Information

• Brand: Cisco
• Model Number: CFP-40G-SR4
• Device Type: CFP Transceiver Module

Technical Highlights

• Form Factor: Plug-in Module
• Cabling Standard: 40GBASE-SR4

Data Transmission

• Transfer Speed: 40 Gigabits per second
• Optical Wavelength: 850 nm
• Protocol: 40 Gigabit Ethernet

Distance and Compatibility

• Maximum Transmission Distance: 490 feet
• Designed For: P/N: WS-X6904-40G-2T, WS-X6904-40G-2T=, WS-X6904-40G-2TXL, WS-X6904-40G-2TXL=

Key Features

Performance Highlights

• Delivers 40 Gbps high-speed connectivity for enterprise-grade networks.
• Optimized for short-range communication with MPO connector support.
• Operates at 850 nm wavelength for efficient optical transmission.

Design Advantages

• Compact plug-in module for easy installation and maintenance.
• Supports multi-fiber MPO connections for streamlined cabling.
• Compliant with Ethernet standards ensuring interoperability.

Overview of Cisco CFP-40G-SR4 Ethernet 100m CFP Transceiver

The Cisco CFP-40G-SR4 Ethernet CFP Transceiver Module with MPO Connector is designed to support high-bandwidth data transmission across modern enterprise, cloud, telecommunications, and data center environments. As organizations continue to migrate toward faster network infrastructures capable of handling virtualization, big data analytics, AI workloads, and large-scale storage traffic, 40 Gigabit Ethernet solutions remain a critical component of many network architectures. This optical transceiver category serves organizations seeking reliable, standards-compliant, and high-performance connectivity between switches, routers, aggregation layers, and storage systems.

Built around CFP technology, the Cisco CFP-40G-SR4 transceiver provides a practical solution for short-range optical communication over multimode fiber. The module utilizes MPO connectivity to transmit and receive data across multiple optical lanes simultaneously, enabling efficient bandwidth delivery while maintaining signal integrity. The transceiver category continues to be widely deployed in enterprise campus environments, cloud infrastructure facilities, and high-density data centers where dependable 40GbE connectivity remains essential.

Understanding the Cisco CFP-40G-SR4 Optical Transceiver Category

Optical transceivers function as the bridge between networking hardware and fiber optic cabling infrastructure. The Cisco CFP-40G-SR4 category represents a family of 40 Gigabit Ethernet optical modules engineered for short-distance communication. These modules convert electrical signals generated by network equipment into optical signals transmitted through fiber cabling and then convert incoming optical signals back into electrical data.

Unlike conventional copper-based networking solutions, optical transceivers provide superior bandwidth scalability, reduced electromagnetic interference, lower latency characteristics, and greater transmission efficiency. The CFP-40G-SR4 category specifically addresses environments requiring high-speed connectivity within data centers, enterprise buildings, and networking facilities where distances typically fall within multimode fiber specifications.

The use of MPO connectivity enables multiple optical channels to operate concurrently, maximizing throughput while maintaining reliable performance. This architecture supports demanding workloads that require rapid data movement between servers, storage systems, virtualization platforms, and network aggregation equipment.

Role of CFP Technology in Modern Networking

CFP technology emerged as a standardized form factor for high-speed optical communication. The CFP form factor was developed to support 40 Gigabit Ethernet and 100 Gigabit Ethernet applications while providing flexibility, interoperability, and vendor compatibility.

In enterprise and carrier-grade networking environments, CFP modules offer the performance necessary to support large-scale infrastructure deployments. The Cisco CFP-40G-SR4 category leverages these advantages by combining high-capacity optical transmission with Cisco's networking expertise and quality standards.

The CFP design accommodates advanced optical components, thermal management systems, and digital diagnostic monitoring capabilities. These characteristics contribute to stable performance even in environments with intensive traffic patterns and continuous operational demands.

Key Features of Cisco CFP-40G-SR4 Ethernet Transceivers

40 Gigabit Ethernet Connectivity

One of the defining characteristics of the Cisco CFP-40G-SR4 category is support for 40 Gigabit Ethernet transmission rates. This bandwidth capability allows organizations to consolidate network traffic, reduce bottlenecks, and improve overall infrastructure efficiency.

Applications benefiting from 40GbE connectivity include virtualization clusters, cloud computing environments, database replication systems, video streaming platforms, storage area networks, and high-performance computing deployments. The increased bandwidth enables organizations to accommodate growing network demands without requiring extensive architectural redesigns.

MPO Optical Interface

The MPO connector serves as a critical component within the Cisco CFP-40G-SR4 transceiver category. MPO technology enables multiple fiber channels to be integrated into a single compact interface, supporting parallel optical transmission techniques that enhance data throughput.

The MPO design simplifies cable management within high-density networking environments while supporting scalable infrastructure growth. Data centers often rely on MPO cabling systems because they facilitate efficient deployment, maintenance, and future expansion.

Multimode Fiber Support

The Cisco CFP-40G-SR4 category is optimized for multimode fiber infrastructure. Multimode fiber remains a preferred solution for short-range optical networking because it offers cost-effective deployment and excellent performance characteristics for data center and campus applications.

By supporting multimode fiber, these transceivers provide organizations with an economical pathway to high-speed networking while leveraging existing cabling investments. This compatibility helps reduce upgrade costs and simplifies migration strategies.

Digital Optical Monitoring Capabilities

Modern Cisco optical transceivers incorporate sophisticated monitoring features that enable administrators to track critical operational parameters. These diagnostics may include optical power levels, temperature readings, supply voltage measurements, and laser bias current statistics.

Access to real-time monitoring information improves network visibility and helps identify potential issues before they affect production services. Proactive management contributes to improved uptime, reduced troubleshooting complexity, and enhanced operational efficiency.

Architecture and Transmission Technology

Parallel Optical Communication

The Cisco CFP-40G-SR4 transceiver category utilizes parallel optical communication technology. Rather than transmitting all data through a single optical channel, multiple lanes operate simultaneously to achieve aggregate bandwidth requirements.

This approach improves efficiency and enables high-speed communication without requiring complex modulation schemes. Parallel optics have become an important foundation for many modern Ethernet standards due to their scalability and reliability.

Lane-Based Data Distribution

Within a parallel optical architecture, network traffic is distributed across multiple transmission lanes. Each lane carries a portion of the overall data stream, allowing the combined output to achieve the desired 40 Gigabit Ethernet throughput.

This lane-based methodology helps maintain signal quality while supporting high-speed operation across supported transmission distances. It also contributes to interoperability with industry-standard networking equipment.

Optical Signal Integrity

Maintaining signal integrity is essential for reliable high-speed networking. Cisco CFP-40G-SR4 transceivers are engineered to preserve optical signal quality through precision manufacturing, rigorous testing, and adherence to industry standards.

Signal integrity directly influences network reliability, packet delivery performance, and overall user experience. High-quality optical components help minimize transmission errors and maintain consistent communication across connected devices.

Data Center Applications

Server Connectivity

Data centers frequently deploy Cisco CFP-40G-SR4 transceivers to connect servers with aggregation switches and core networking infrastructure. As server performance continues to increase, networking components must accommodate larger volumes of east-west traffic between systems.

High-bandwidth optical connectivity ensures that processing resources remain fully utilized without network-related constraints. This capability supports efficient workload distribution and resource optimization.

Storage Networking

Storage platforms generate significant data traffic due to backup operations, replication processes, database transactions, and virtualization workloads. Cisco CFP-40G-SR4 modules help provide the bandwidth required for efficient storage communications.

Fast and reliable storage networking contributes to improved application responsiveness, reduced backup windows, and enhanced disaster recovery readiness.

Cloud Infrastructure Support

Cloud computing environments depend heavily on scalable networking solutions capable of supporting dynamic workloads. The Cisco CFP-40G-SR4 category provides connectivity options that align with cloud infrastructure requirements.

Whether deployed within private clouds, hybrid environments, or service provider facilities, these transceivers support high-capacity communication between compute, storage, and networking resources.

Enterprise Network Deployment Scenarios

Campus Backbone Connectivity

Large enterprise campuses often require high-speed backbone connections between buildings, departments, and network distribution layers. Cisco CFP-40G-SR4 transceivers provide the bandwidth necessary to support aggregated traffic from numerous users and applications.

As organizations adopt bandwidth-intensive services such as unified communications, collaboration platforms, and cloud-based applications, backbone infrastructure must evolve to maintain performance expectations.

Aggregation Layer Networking

Network aggregation layers combine traffic from multiple access switches before forwarding data to the core network. The Cisco CFP-40G-SR4 category supports these environments by delivering sufficient throughput to accommodate aggregated workloads.

Efficient aggregation architecture helps optimize network performance while supporting future growth and infrastructure scalability.

Virtualized Enterprise Environments

Virtualization technologies continue to transform enterprise IT operations. Virtual machines generate substantial network traffic as workloads move between hosts, storage arrays, and management systems.

High-speed optical connectivity provided by Cisco CFP-40G-SR4 modules supports these dynamic environments by delivering reliable bandwidth and minimizing communication bottlenecks.

Advantages of MPO-Based Optical Infrastructure

Improved Cable Density

MPO connectivity allows organizations to maximize cable density within networking racks and cabinets. Multiple fiber strands can be consolidated into a single connector assembly, reducing physical cable congestion and improving airflow management.

High-density infrastructure designs contribute to better operational efficiency and simplify large-scale deployments.

Faster Deployment Processes

Pre-terminated MPO cabling systems accelerate installation timelines compared with traditional fiber termination methods. Organizations can deploy optical infrastructure more rapidly while maintaining consistent quality standards.

This efficiency becomes particularly valuable during large-scale data center expansions, network upgrades, and facility relocations.

Enhanced Scalability

Scalability remains a major consideration for modern networking strategies. MPO-based architectures support future bandwidth growth by enabling organizations to add capacity without completely replacing existing infrastructure.

The Cisco CFP-40G-SR4 category aligns with these objectives by supporting standardized optical networking frameworks designed for long-term scalability.

Performance and Reliability Characteristics

Consistent Throughput Delivery

Reliable throughput is essential for business-critical applications and services. Cisco CFP-40G-SR4 transceivers are engineered to maintain stable data transmission under demanding operational conditions.

Consistent performance supports application responsiveness, user productivity, and service availability across enterprise and cloud environments.

Reduced Network Bottlenecks

Bandwidth limitations frequently create bottlenecks that affect application performance and user experiences. By delivering 40 Gigabit Ethernet connectivity, Cisco CFP-40G-SR4 modules help alleviate congestion points within network infrastructures.

Organizations can support increasing traffic volumes while maintaining efficient data movement between connected systems.

High Availability Support

Mission-critical environments require networking solutions that contribute to continuous service availability. Cisco transceiver technology is designed to support high-availability architectures that minimize downtime and maximize operational continuity.

Combined with redundant network designs, these optical modules help create resilient communication infrastructures capable of supporting modern business requirements.

Compatibility with Cisco Networking Ecosystems

Integration with Cisco Switches

The Cisco CFP-40G-SR4 category is engineered for seamless integration with compatible Cisco switches deployed throughout enterprise and service provider networks. Native compatibility simplifies deployment and ensures consistent operational performance.

Organizations utilizing Cisco networking platforms can benefit from validated interoperability, streamlined management processes, and comprehensive vendor support.

Router Connectivity Applications

Routers serving as aggregation, edge, or core devices often require high-capacity optical interfaces. Cisco CFP-40G-SR4 transceivers provide the bandwidth necessary to support routing environments handling significant traffic volumes.

Reliable optical communication enables routers to efficiently exchange data with neighboring network devices while maintaining predictable performance characteristics.

Network Management Integration

Cisco networking ecosystems incorporate extensive management capabilities that help administrators monitor, configure, and optimize infrastructure resources. The CFP-40G-SR4 category supports these management frameworks through diagnostic visibility and operational transparency.

Comprehensive monitoring helps organizations maintain network health, improve troubleshooting efficiency, and support long-term infrastructure planning initiatives.

Strategic Value in Modern Optical Networking

The Cisco CFP-40G-SR4 Ethernet CFP Transceiver Module with MPO Connector remains an important category within high-speed optical networking environments. Its combination of 40 Gigabit Ethernet performance, MPO-based connectivity, multimode fiber compatibility, and Cisco engineering excellence makes it suitable for data centers, enterprise campuses, cloud infrastructure deployments, storage networking environments, and aggregation architectures requiring dependable optical communication and scalable bandwidth capabilities.