QSFP-40G-LR4-S Cisco Single-Mode QSFP+ Transceiver Module Refurbished

In the world of networking, efficient data transmission is crucial for seamless communication and connectivity. One key component that plays a vital role in this process is the QSFP-40G-LR4-S Cisco Single-Mode QSFP+ Transceiver Module. This module is a sophisticated piece of technology designed to enhance network performance and reliability. In this detailed explanation, we will delve into the various aspects of the QSFP-40G-LR4-S, exploring its features, benefits, applications, and how it contributes to the overall efficiency of a network.

What is a QSFP+ Transceiver Module?

Before we dive into the specifics of the QSFP-40G-LR4-S, let's grasp the basics of a QSFP+ transceiver module. QSFP stands for Quad Small Form-Factor Pluggable, and it's a compact, hot-pluggable transceiver used for data communication applications. The "+ " indicates an upgraded version that supports higher data rates, in this case, 40 gigabits per second (Gbps).

The QSFP-40G-LR4-S is a single-mode transceiver module, meaning it is designed to operate over longer distances. Let's explore its key features:

• Data Rate and Connectivity: The QSFP-40G-LR4-S supports a data rate of 40 Gbps, making it ideal for high-bandwidth applications. It achieves this high speed while maintaining compatibility with existing network infrastructures.
• Single-Mode Fiber Compatibility: Single-mode fiber (SMF) is designed for longer-distance transmission, and the "LR4" in the module's name signifies that it operates over a single-mode fiber. This makes the QSFP-40G-LR4-S suitable for applications that require connectivity over extended distances.
• Wavelengths and Channels: The "LR4" designation also indicates that the module uses four different wavelengths for transmission. Each wavelength corresponds to a specific channel, allowing for efficient and simultaneous data transfer.
• Reach and Distance: The "LR4" variant typically supports transmission distances of up to 10 kilometers, making it suitable for medium to long-range connections.

Now that we've covered the technical aspects, let's explore the benefits of incorporating the QSFP-40G-LR4-S into a network infrastructure:

• Increased Bandwidth: With a data rate of 40 Gbps, the QSFP-40G-LR4-S significantly enhances the network's overall bandwidth. This is crucial for applications that demand high-speed data transfer, such as data centers and enterprise networks.
• Long-Distance Connectivity: The single-mode fiber compatibility and LR4 designation make this transceiver module suitable for long-distance connections. This is particularly advantageous for scenarios where data needs to be transmitted over extended distances without compromising performance.
• Scalability: The QSFP-40G-LR4-S is part of the QSFP+ family, which means it aligns with industry standards. This compatibility ensures scalability, allowing for easy integration into existing networks and the ability to upgrade to higher data rates in the future.

Understanding where and how to deploy the QSFP-40G-LR4-S is essential. Let's explore some common applications:

• Data Centers: In the fast-paced environment of data centers, where large volumes of data are processed and transferred continuously, the QSFP-40G-LR4-S finds its application. Its high data rate and long-distance capabilities make it suitable for interconnecting data center components.
• Enterprise Networks: Large enterprises with expansive networks often require high-speed and long-distance connectivity. The QSFP-40G-LR4-S addresses this need, providing a reliable solution for connecting different parts of a corporate network.
• Telecommunication Networks: Telecommunication networks demand reliable and high-performance components. The QSFP-40G-LR4-S, with its long-distance capabilities, is well-suited for applications in telecommunications, including the backbone infrastructure.

The QSFP-40G-LR4-S Cisco 40Gbase LR4 Single Mode Transceiver is designed to provide high resiliency and availability in network environments. It features a hot-pluggable form factor, which allows for easy installation and replacement without disrupting network operations.

The transceiver utilizes four independent optical channels, each operating at 10 Gbps, to provide a total data rate of 40 Gbps. This allows for increased bandwidth and improved network performance.

In addition, the transceiver uses a single-mode fiber optic cable, which provides a longer transmission distance of up to 10 kilometers. This allows for greater flexibility in network design and deployment.

The transceiver also has built-in diagnostic monitoring, which allows for real-time monitoring of the transceiver's performance and status. This helps to ensure that any issues can be quickly identified and resolved, minimizing downtime and maintaining high availability.

Compliant Standards

The QSFP-40G-LR4-S Cisco 40Gbase LR4 Single Mode Transceiver is a compliant transceiver that meets certain standards for performance, functionality, and compatibility. These standards include:

• IEEE 802.3ba: This is the standard for 40 Gigabit Ethernet, which specifies the technical specifications for 40G Ethernet networks. The product of the transceiver is compliant with this standard, meaning it can be used in 40G Ethernet networks without any issues.
• RoHS Compliance: RoHS stands for Restriction of Hazardous Substances and is a directive that limits the use of certain hazardous materials in electronic products. The part transceiver is RoHS compliant, meaning it does not contain any hazardous materials that could harm the environment.
• SFF-8431: This is a specification for Quad Small Form Factor Pluggable (QSFP) transceivers, which includes the mechanical and electrical specifications for QSFP modules. The model of the transceiver is compliant with this standard, meaning it can be used in QSFP-compatible equipment.
• SFF-8472: This is a specification for Digital Diagnostics Monitoring (DDM) in QSFP transceivers, which allows for the monitoring of various parameters such as temperature, voltage, and optical power. The part of the transceiver is compliant with this standard, meaning it can provide DDM information to the host system.

• Manufacturer: Cisco
• Part Number or SKU# QSFP-40G-LR4-S
• Product Type: QSFP+ Transceiver module

• Data Link Protocol: 40 Gigabit Ethernet
• Form Factor: Plug-in module
• Connectivity Technology: Wired
• Data Transfer Rate: 40 Gbps

• Maximum Data Transfer Rate: 40 Gbps
• Max Transfer Distance: 10 km (6.2 mi)
• Wavelength: 1270nm to 1330nm
• Fiber Operating Mode: Full-Duplex
• DDM (Digital Diagnostics Monitoring): Yes
• Compatible Networks: 40 Gbps
• MTBF (Mean Time Between Failures): 1,489,426 hours

• Interfaces/Ports Details: 1 x LC 40GBase-LR4 Network

• Power Consumption Operational: 3.5 Watts

• Min Operating Temperature: 32 °F
• Max Operating Temperature: 158 °F

In general, the QSFP-40G-LR4-S Cisco Single-Mode QSFP+ Transceiver Module is a powerful and versatile component that significantly contributes to the efficiency of network communication. Its high data rate, long-distance capabilities, and compatibility with industry standards make it a valuable asset for various applications, from data centers to telecommunications networks. Understanding its features, benefits, applications, and proper installation and maintenance procedures is crucial for network administrators looking to optimize their infrastructure. By incorporating the QSFP-40G-LR4-S into a network, organizations can ensure reliable and high-performance data transmission, ultimately leading to enhanced productivity and connectivity.