Оптические трансиверы 25 Гбит/с для гипермасштабируемых центров обработки данных

▶ Введение

As data centers continue to evolve toward higher density and faster throughput, 25 Гбит/с Ethernet has emerged as a key building block in modern hyperscale infrastructure. Designed to deliver 2.5× the bandwidth of 10G Ethernet with minimal changes to cabling and infrastructure, 25G optical modules strike the ideal balance between performance, power efficiency, and scalability.

В этой статье объясняется, почему 25G SFP28 optical modules have become the preferred choice for hyperscale data centers, their technical standards, deployment models, and how LINK-PP 25G Optical Modules support these demanding environments.

▶ Why 25G Ethernet Matters in Hyperscale Environments

Modern hyperscale data centers require consistent, high-speed links between серверы, top-of-rack (ToR) switches, and aggregation layers. 25 Гбит/с Ethernet, standardized by IEEE 802.3by, offers single-lane 25Gbps connectivity using the compact SFP28 form factor.

Compared to 10G, 25G delivers:

• 2.5× higher bandwidth per port

• Reduced power consumption per Gb

• Lower cost per transmitted bit

• Seamless scalability to 100G (4×25G lanes)

This makes 25G an ideal solution for data centers seeking incremental upgrades without overhauling their existing infrastructure.

▶ Technical Overview: Inside the 25G SFP28

A 25G SFP28 optical transceiver operates at 25.78125 Gbps and uses a single electrical lane. It supports various reaches and wavelengths depending on fiber type and application scenario:

Тип модуля	Длина волны	Тип волокна	Расстояние	Типичная область применения
SFP28-SR	850 нм	Многомодовое волокно	70–100m	In-rack, ToR links
SFP28-LR	1310 нм	ВОК одномодового типа	До 10 км	Aggregation links
SFP28-ER	1310/1550nm	ВОК одномодового типа	До 40 км	Metro or campus
SFP28 BiDi	TX/RX 1270/1330nm	ВОК одномодового типа	10 км	Single-fiber duplex
25G DAC / AOC	Copper / Fiber	–	1–30m	Short-distance, low-latency

Each module type meets MSA (Соглашение о многоисточниковом обеспечении) и IEEE compliance, ensuring broad interoperability with leading switch and NIC vendors.

▶ Applications in Hyperscale Data Centers

1. Server-to-ToR Connectivity
   25G SFP28 modules connect server Сетевые интерфейсные карты to top-of-rack switches, offering high-density, low-latency connections with excellent energy efficiency.

2. Leaf-Spine Architecture
   25G serves as the standard for leaf-layer access ports, while spine uplinks scale up to 100G or 400G using multiple 25G lanes, enabling a smooth transition path for network growth.

3. Cloud and AI Workloads
   With the explosion of AI inference and big data analytics, 25G Ethernet provides the speed and reliability required for distributed Кластеры GPU and real-time data processing systems.

▶ Advantages of LINK-PP 25G Optical Modules

ССЫЛКА-PP, a professional manufacturer of Ethernet connectivity components, provides a full portfolio of 25G SFP28 optical transceivers optimized for data center and telecom networks.

Ключевые преимущества LINK-PP 25G series:

• Full compatibility with IEEE 802.3by and SFP28 MSA standards

• Low power consumption (<1.5W typical) for energy-efficient rack designs

• Цифровой диагностики мониторинг (Digital Diagnostics Monitoring, DDM)DDM/DOM) for real-time link performance tracking

• Superior EMI shielding and temperature stability for 24/7 operation

• Cost-effective alternatives to branded OEM optics with the same reliability and interoperability

▶ Migration and Deployment Best Practices

• Leverage existing fiber plant: 25G SFP28-SR modules can often reuse existing OM3/OM4 cabling from 10G deployments, reducing upgrade costs.

• Plan for 100G aggregation: 25G interfaces scale naturally into 100G (4×25G) and 400G (16×25G) architectures.

• Monitor link health: Use DDM features for predictive maintenance and optical power analysis.

• Combine with DAC/AOC solutions: For short connections (≤5 m), 25G DAC cables minimize latency and cost.

▶ Заключение

As hyperscale data centers scale to meet the bandwidth demands of AI, IoT, and cloud workloads, 25 Гбит/с Ethernet has proven to be the most efficient and scalable choice for server connectivity.

With its robust, power-efficient, and interoperable 25G SFP28 optical modules, ССЫЛКА-PP provides reliable solutions that help data centers achieve higher throughput, simplified management, and lower total cost of ownership.

For high-performance optical connectivity that meets tomorrow’s network challenges today, explore LINK-PP 25G Optical Modules — engineered for performance, designed for hyperscale growth.

🔗 Explore LINK-PP’s full 25G product lineup:
👉 https://www.l-p.com/store-26225-25g-sfp28.htm