Cisco SFP-25G-SR-S 25GBASE-SR SFP28 Transceiver | 25Gbps 850nm MMF LC 100m

The Cisco SFP-25G-SR-S is a high-performance 25GBASE-SR SFP28 optical transceiver designed for short-reach 25 Gigabit Ethernet connectivity in modern enterprise networks, cloud computing environments, and data centers. Operating at an 850nm wavelength over multimode fiber (MMF), this module delivers reliable high-speed transmission up to 70 meters on OM3 fiber and 100 meters on OM4 fiber through a duplex LC connector.

As organizations continue migrating from 10G to 25G Ethernet architectures, the SFP-25G-SR-S provides an efficient and cost-effective upgrade path. It enables significantly higher bandwidth while maintaining low power consumption and compatibility with existing multimode fiber infrastructure.

The module supports Digital Optical Monitoring (DOM), allowing network administrators to monitor operating parameters such as temperature, voltage, transmit power, receive power, and laser bias current in real time. This helps ensure stable network performance and simplifies troubleshooting.

Designed to meet the demands of high-density network deployments, the Cisco SFP-25G-SR-S is widely used in Cisco Nexus switches, Catalyst platforms, UCS servers, and other 25G Ethernet networking equipment.

Figure 1 shows the front panel of SFP-25G-SR-S=.

• Supports 25Gbps Ethernet connectivity
• Compliant with 25GBASE-SR standards
• Operates at 850nm wavelength
• Duplex LC optical interface
• Supports OM3 MMF up to 70m
• Supports OM4 MMF up to 100m
• Hot-swappable SFP28 form factor
• Low power consumption
• Digital Optical Monitoring (DOM) support
• Designed for enterprise and data center networks
• High reliability and stable optical performance
• Compatible with various Cisco networking platforms

The Cisco SFP-25G-SR-S is commonly deployed in high-density data centers where reliable and scalable 25G connectivity is required between servers, storage systems, and switches.

Cloud service providers utilize 25G Ethernet to increase bandwidth efficiency while reducing the number of physical network connections.

The module supports aggregation and access-layer connectivity in enterprise environments requiring high-performance network infrastructure.

Ideal for connecting servers to Top-of-Rack (ToR) switches in modern spine-leaf architectures.

Supports high-throughput traffic generated by virtualization platforms and cloud workloads.

Compared with traditional 10G optical modules, the SFP-25G-SR-S delivers 2.5 times more bandwidth without requiring significant infrastructure changes.

25G Ethernet offers better cost efficiency than 40G solutions by providing higher performance with fewer optical resources.

Organizations can upgrade from 10G to 25G networks while continuing to use existing multimode fiber cabling.

Higher throughput enables improved application performance, faster data transfers, and reduced network congestion.

Cisco optical modules are engineered for enterprise-grade performance, ensuring dependable operation in mission-critical environments.

Choose the SFP-25G-SR-S if your network requires higher throughput, cloud-scale performance, and future-proof infrastructure. For existing 10G deployments with limited bandwidth requirements, SFP-10G-SR may still be suitable.

We supply original networking equipment and optical transceivers from leading global brands.

Large inventory and global logistics support ensure rapid order fulfillment.

Our experienced engineering team provides pre-sales consultation and after-sales technical assistance.

Strong supply chain management allows us to offer cost-effective solutions for enterprises, telecom operators, and system integrators.

Worldwide delivery through trusted logistics partners including DHL, FedEx, UPS, and TNT.

All products are covered by a comprehensive warranty program and quality assurance process.

The module supports transmission distances up to 70 meters over OM3 multimode fiber and up to 100 meters over OM4 multimode fiber.

Yes. The module supports Digital Optical Monitoring (DOM), enabling real-time monitoring of operational parameters such as temperature, voltage, optical power, and laser bias current.

The SFP-25G-SR-S is commonly used with Cisco Nexus switches, Cisco Catalyst switches, Cisco UCS servers, and other Cisco platforms supporting SFP28 interfaces.

Yes. The module is designed for use with OM3 and OM4 multimode fiber infrastructure, helping reduce upgrade costs.

Yes. The SFP-25G-SR-S supports hot-swappable installation, allowing replacement without shutting down the network device.

SFP28 modules support data rates up to 25Gbps, while SFP+ modules typically support up to 10Gbps. SFP28 provides higher bandwidth and improved network efficiency for modern applications.

Yes. Our technical support team is available to assist with product selection, deployment recommendations, compatibility verification, and troubleshooting.

Yes. We provide competitive pricing and customized quotations for distributors, system integrators, telecom operators, and large-scale projects.

When purchasing the Cisco SFP-25G-SR-S from Lonrise Equipment, customers benefit from comprehensive after-sales support, including:

• Product authenticity assurance
• Warranty coverage
• Compatibility verification before shipment
• Technical consultation
• Deployment assistance
• Rapid response support
• Global logistics tracking
• Long-term supply availability

Our goal is to help customers build reliable, scalable, and cost-effective network infrastructures while minimizing deployment risks and operational downtime.