Leveraging 100G QSFP28 Transceivers for Efficient Data Center Interconnect – A Comprehensive Guide

In today’s fast-paced digital world, the exponential growth of data has been one of the most defining trends. Data centers, the vital hubs that store, manage, and distribute this vast amount of data, have had to evolve and adapt to handle the demands of today’s global, hyper-connected society. This adaptation involves scaling networks, improving reliability, and increasing bandwidth – tasks that require powerful technology like the 100G transceiver. The 100G QSFP28 transceiver is leading the charge, enabling next-generation high-speed data transmission. This article will delve into the role of 100G transceivers in Data Center Interconnect (DCI), their selection, and their application in various network architectures.

What Is Data Center Interconnect?

Data Center Interconnect refers to the networking of two or more different data centers to achieve business or IT objectives. This multi-site connectivity allows the exchange of data and workload mobility, enabling redundancy, load-balancing, and even disaster recovery capabilities. DCI technology has been widely adopted by large enterprises, cloud service providers, and network service providers to enhance their services, optimize resource utilization, and protect against site failures.

How to Choose 100GBASE QSFP28 in Data Center Applications

When it comes to choosing 100GBASE QSFP28 transceivers for data center applications, multiple factors must be carefully considered. The following parameters are vital in making the right choice that caters to the specific needs of a data center:

QSFP28-100G Transcevier

Transmission Distance: Depending on whether the data center interconnection is taking place over a short, medium, or long distance, different types of 100GBASE QSFP28 transceivers are required. For example, 100GBASE-SR4 transceivers are typically used for short distances up to 100 meters, while LR4 transceivers are designed for longer distances up to 10 kilometers. ER4 and ZR4 are used for very long distances, reaching up to 40 kilometers and beyond.

Capacity: As data centers grow in size and the amount of data they process, so does the capacity demand on the transceivers. The 100GBASE QSFP28 transceivers are designed to handle high capacities, making them ideal for large data center operations.

Data Rate: The ability to transmit data at high speeds is critical in a data center environment. The 100GBASE QSFP28 transceivers, with a data rate of 100 Gbps, offer a significant improvement over previous generations and can meet the high-speed requirements of modern data centers.

High-Density: The form factor of the transceiver plays a significant role when dealing with high-density applications. The compact size of the 100GBASE QSFP28 transceiver enables higher port density on the switches, which is crucial in high-performance computing environments where space is at a premium.

Power Consumption for Electricity and Cooling: Power efficiency is a major consideration in data center operations due to the implications for operational expenditure and environmental sustainability. The 100GBASE QSFP28 transceivers are designed to operate at a lower power consumption compared to older transceiver models. This reduces the electricity needed for operation and the cooling required to maintain optimum operating temperatures, resulting in significant energy and cost savings.

Cost of Transceivers: While performance is a key factor, the cost of the transceivers also plays a significant role. 100GBASE QSFP28 transceivers offer an optimal balance between cost and performance, providing high-speed data transmission at a relatively low cost. However, the total cost of ownership should also consider factors like power consumption and lifespan.

How to Apply 100G Transceivers in DCI

Spine-Leaf Network Architecture

The Spine-Leaf architecture is a two-layer network topology commonly used in data centers for its scalability and high-bandwidth capabilities. In this architecture, every leaf (access) switch is interconnected with every spine (aggregation) switch, ensuring a high level of redundancy and performance. The 100G QSFP28 transceivers play a pivotal role here, enabling high-speed interconnections between the spine and leaf switches and ensuring smooth data flow across the network.

Long-Haul Connection for Data Centers

For metro area networks or long-haul connections between data centers, the 100G transceivers are indispensable. They provide high-speed, reliable, and efficient data transport over long distances. The unique design and advanced technology of the 100G QSFP28 make it ideal for these applications, providing unparalleled performance and reliability.


In conclusion, 100G transceivers, and specifically the 100G QSFP28 modules, are crucial components in today’s data center networking environment. They are instrumental in facilitating high-speed, efficient, and reliable Data Center Interconnect. Whether in the Spine-Leaf network architecture or for long-haul data center connections, these powerful devices deliver top-notch performance that is vital for large enterprise applications, cloud service providers, and network service providers. QSFPTEK‘s 100G QSFP28 modules and S7600 series network switches are highly recommended for those looking to build or upgrade their data center infrastructure. These products offer exceptional quality, superior performance, and unmatched reliability. As the demands on data centers continue to escalate, QSFPTEK’s advanced solutions ensure that your data center is equipped to handle the data demands of the future


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