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Everything You Need to Know About 100GBase-LR4

June 15, 2023

What is 100GBase-LR4, and What is it Compatible With?

What is 100GBase-LR4, and What is it Compatible With?

100GBase-LR4 is an optical transceiver module used for transmitting data at an unmatched speed of 100Gb/s over a single fiber optic cable at a distance of up to 10 km. This technology uses four wavelengths, with each beam carrying 25 Gb/s data to achieve the required bandwidth, making it an excellent choice for data centers and enterprises requiring high-speed internet connectivity and reliable performance. 

Overview of 100GBase-LR4 Optical Transceiver Module

The 100GBase-LR4 optical transceiver is a pluggable module that supports 100 Gigabit Ethernet (GbE) standards for high-speed data transmission. The technology is used for long-range data transmission since it uses four wavelengths, which reduces the impact of data distortion and ensures reliable and steady performance. The LR4 module supports single-mode fiber (SMF), ideal for data center interconnects, network service provider infrastructures, and enterprise infrastructures, among other high-bandwidth applications. 

Compatibility of 100GBase-LR4 QSFP28 Transceiver

100GBase-LR4 QSFP28 transceiver module is compatible with other QSFP28 transceiver modules in the market. The compatibility of these modules enables users to mix and match various transceiver modules to meet different network requirements. The transceiver module is compatible with a broad range of switches and routers in the market, offering flexibility and ease of use. Users can easily configure the transceiver to support applications like Ethernet, SONET/SDH, and Fiber Channel.

MSA Standard for QSFP28 Transceiver Module

The 100GBase-LR4 QSFP28 transceiver module complies with the Multi-Source Agreement (MSA) standard, a set of specifications governing the design and performance of pluggable optical transceiver modules. The MSA standard defines the transceiver modules’ mechanical, electrical, and optical specifications to enable vendor interoperability. The compliance with the MSA standard ensures that the 100GBase-LR4 QSFP28 transceiver module is compatible with other transceiver modules, offering more deployment options for network designers and administrators.

What are the Features of the 100GBase-LR4 QSFP28 Transceiver?

The QSFP28 transceiver is a compact, hot-pluggable module used in high-speed data applications in modern networking. It is a multi-lane transmitter and receiver that supports 100G data rates and offers several features for enhanced connectivity, such as Optical Transceiver for Long-Range Transmission, Single-Mode Fiber with LC Connectors, 1310nm Wavelength, and a 10km Transmission Range.

Optical Transceiver for Long-Range Transmission

The 100GBase-LR4 QSFP28 transceiver leverages an optical transceiver in its construction, making it unique among other similar products. The transceiver offers improved transmission quality over longer distances, as it helps to convert electrical signals into optical signals that can be transmitted over a network. It also plays a crucial role in managing signal attenuation and ensuring that the data sent is reliable and high-quality while functioning seamlessly within a larger networking environment.

Single-Mode Fiber with LC Connectors

To enhance the performance of the 100GBase-LR4 QSFP28 transceiver for long-distance transmission, a single-mode fiber with LC connectors is utilized for interconnects. The LC connectors are essential because they are tiny, simplifying the installation process while reducing the risk of errors and signal loss. The single-mode fiber also provides superior quality transmission with less signal distortion over long distances than multi-mode fiber optics.

1310nm Wavelength and 10km Transmission Range

The 100GBase-LR4 QSFP28 transceiver offers 1310nm wavelength support for optimal signal quality. This Wavelength ensures top-notch transmission capacity and signals clarity over long distances. With up to a 10km transmission range, the transceiver is ideal for applications requiring high-speed data transmission, such as data center interconnects, cloud computing, and enterprise networks.

DOM Support for Real-Time Monitoring

To ensure that the 100GBase-LR4 QSFP28 transceiver functions optimally, it is designed with Digital Optical Monitoring (DOM) support for real-time monitoring. This feature allows network managers to monitor critical parameters like voltage, temperature, and laser bias current to ensure optimal transceiver performance. This means adjustments can be made in real-time to avoid potential downtime or issues.

Quality Tested for Temperature Range

The 100GBase-LR4 QSFP28 transceiver is rigorously tested for temperature range to ensure it can operate within a wide range. The transceiver is designed to work optimally between -5°C and +70°C, making it ideal for use in various environments. This temperature range ensures that the transceiver’s performance is not compromised and its reliability is guaranteed.

What are the Benefits of 100GBase-LR4 QSFP28 Transceiver?

What are the Benefits of 100GBase-LR4 QSFP28 Transceiver?

The 100GBase-LR4 QSFP28 Transceiver is a high-speed data transfer technology that has revolutionized data centers globally. In simple terms, the transceiver is a device that transmits and receives data from one point to another. However, its remarkable ability to transfer large amounts of data at lightning-fast speed sets it apart from other transceivers, ensuring optimal performance in data centers.

High-Speed Data Transfer for Data Centers

The 100GBase-LR4 QSFP28 Transceiver is engineered to support high-speed data transfer and meet the needs of today’s data-intensive applications. With data rates of up to 100Gbps, it provides the ideal solution for handling large volumes of data, making it an excellent choice for data centers that require maximum throughput capabilities. From cloud computing to data backup and virtualization, the transceiver ensures lightning-fast data transfer, enabling organizations to achieve increased productivity, better performance, and reduced operational costs.

Cost-Effective Solution for Ethernet Applications

Organizations are always looking for ways to reduce costs without compromising quality. The 100GBase-LR4 QSFP28 Transceiver is a cost-effective solution that performs better than traditional 10G or 40G transceivers. By utilizing the 100Gbps data rate, organizations can use fewer devices and cables, reducing power consumption and hardware costs.

Optimized for Optical Performance

The 100GBase-LR4 QSFP28 Transceiver is optimized for optical performance, reducing the attenuation of the optical signal during the data transfer process. Using LR4 (long-reach four lanes) technology, the transceiver can send data up to 10 kilometers, making it an excellent choice for long-distance data transmission. Additionally, the transceiver complies with industry standards, ensuring compatibility with various systems.

Easy to Install and Configure

The 100GBase-LR4 QSFP28 Transceiver is easy to install and configure, making it a hassle-free solution for data centers. The hot-swappable design of the transceiver allows for easy installation and replacement, ensuring minimum disruption and maximum uptime. Additionally, since the transceiver is compatible with plug-and-play technologies, organizations can save time and resources on installation and configuration costs.

Cisco QSFP-100G-LR4-S Compatible for Seamless Integration

The 100GBase-LR4 QSFP28 Transceiver is compatible with numerous systems, including Cisco QSFP-100G-LR4-S, ensuring seamless integration with existing infrastructure. More so, it complies with various industry standards, making it the perfect choice for organizations looking to upgrade their current systems to achieve better performance and reliability.


In conclusion, the 100GBase-LR4 QSFP28 Transceiver has revolutionized data centers globally by providing high-speed data transfer capabilities, reducing hardware costs, optimizing optical performance, and being easy to install and configure. Furthermore, its compatibility with Cisco QSFP-100G-LR4-S and adherence to industry standards make it the ideal solution for organizations upgrading their existing infrastructure to achieve optimal performance and reliability.

Recommended Products:100G QSFP28 LR4 LWDM4 10km Transceivers

How to Choose the Right 100GBase-LR4 QSFP28 Transceiver?

How to Choose the Right 100GBase-LR4 QSFP28 Transceiver?

Choosing the suitable 100GBase-LR4 QSFP28 transceiver can be daunting, but ensuring smooth network operations and efficient data transmission is vital. It is essential to evaluate your device’s compatibility with the transceiver before purchasing.

Compatible QSFP28 Transceiver for Your Device

Before purchasing a 100GBase-LR4 QSFP28 transceiver, it is crucial to understand your device’s compatibility requirements and technical specifications. This information will help you select a transceiver that fits seamlessly into your network environment. Check the device’s manual or contact the manufacturer for the necessary information.

Adhering to Industry Standards, MSA Requirements, and OEM Solutions

100GBase-LR4 QSFP28 transceivers must conform to industry standards, Multi-Source Agreement (MSA) requirements, and Original Equipment Manufacturer (OEM) solution guidelines. These standards ensure that the transceiver meets industry experts’ interoperability and technical specifications. Always choose a transceiver that follows these standards to guarantee compatibility and reliable performance.

Duplex LC Connectors for Efficient Transmission

100GBase-LR4 QSFP28 transceivers utilize duplex LC connectors for efficient data transmission. These connectors provide excellent signal integrity and lower insertion loss, translating to a more stable, efficient, and reliable network. Always ensure that your transceiver uses duplex LC connectors for compatibility and efficient data transmission.

Quality Testing and Certifications for Reliable Performance

As with any critical network component, quality testing and certifications are crucial for ensuring reliable performance. Look for transceivers that have undergone rigorous reliability, performance, and compliance testing. Certifications from reputable organizations such as the International Electrotechnical Commission (IEC) and the Institute of Electrical and Electronics Engineers (IEEE) add credibility to the transceiver’s quality.

Customer Reviews and Datasheets for Informed Decision-Making

Lastly, customer reviews and datasheets are essential for informed decision-making. Read customer reviews and testimonials to gauge the transceiver’s performance and reliability based on real-world usage. Datasheets provide technical specifications, compatibility, and other critical information to help you make an informed decision. Use these resources to select a high-quality 100GBase-LR4 QSFP28 transceiver that meets your network requirements.

In conclusion, selecting the suitable 100GBase-LR4 QSFP28 transceiver involves understanding compatibility, adherence to industry standards, key features, quality testing, and customer reviews. By following these guidelines, you can make an informed decision and ensure that your network operates seamlessly with reliable and efficient data transmission.


Overall, investing in the suitable 100GBase-LR4 QSFP28 transceiver can significantly improve the performance and efficiency of your network. By following the guidelines presented in this guide, you can make an informed decision that meets your needs and allows your network to run smoothly.

Frequently Asked Questions

Q: What is 100GBase-LR4?

A: 100GBase-LR4 is a standard optical transceiver module used in data centers to transmit data over long distances at up to 100Gbps. It uses a 1310nm wavelength over single-mode fiber (SMF) with a range of up to 10km.

Q: What are the critical features of 100GBase-LR4?

A: Some key features of 100GBase-LR4 include its ability to transmit data at high speeds, 1310nm wavelength, and long-range transmission of up to 10km over a standard pair of LC SMF connectors. It is also hot-swappable, with a high-performance design, and compliant with IEEE 802.3ba 100GBase-LR4.

Q: What are the applications of 100GBase-LR4?

A: 100GBase-LR4 is commonly used in data centers for high-speed data transmission over long distances. It is ideal for video streaming, cloud computing, and high-speed server connectivity applications.

Q: What is the difference between 100GBase-LR4 and other 100G optical transceiver modules?

A: 100GBase-LR4 is designed to transmit data over long distances of up to 10km, while other 100G optical transceiver modules may be designed for shorter-distance transmissions. Additionally, 100GBase-LR4 uses the 1310nm wavelength over single-mode fiber, while other modules may use different wavelengths and fiber types.

Q: Is 100GBase-LR4 compatible with Cisco QSFP-100G-LR4-S?

A: Yes, 100GBase-LR4 is compatible with Cisco QSFP-100G-LR4-S. It is designed to comply with IEEE 802.3ba 100GBase-LR4, making it compatible with other QSFP28 optical transceiver modules.

Q: What is the maximum throughput of 100GBase-LR4?

A: 100GBase-LR4 can transmit data at speeds of up to 100Gbps, with a range of up to 10km over a standard pair of LC SMF connectors.

Q: What is a datasheet for 100GBase-LR4?

A: A datasheet for 100GBase-LR4 is a document that provides detailed technical information about the optical transceiver module, including its specifications, electrical characteristics, performance parameters, and application guidelines.

Q: What is DOM in 100GBase-LR4?

A: DOM, or digital optical monitoring, is a feature in 100GBase-LR4 that allows for real-time monitoring of the module’s operating conditions, such as output power, input power, and temperature.

Q: Is 100GBase-LR4 compatible with other 100GBase-LR4 QSFP28 optical transceiver modules?

A: 100GBase-LR4 is compatible with other QSFP28 optical transceiver modules compliant with IEEE 802.3ba 100GBase-LR4. This makes it easy to mix and match compatible transceivers to meet the needs of your data center.

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