Cisco - SFP28 transceiver module - 10GbE, 25GbE

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Overview

SFP-10/25G-LR-S is a Cisco 10/25GBASE-LR SFP28 transceiver module engineered for high-speed enterprise and data center network connectivity. The dual-rate optical module supports both 10GbE and 25GbE operation over standard G.652 single-mode fiber, providing connectivity distances of up to 10 km. Cisco identifies the module for SFP28-capable networking platforms and applications requiring high-density, long-reach optical connectivity.

The module operates at a 1310 nm wavelength and uses single-mode fiber for long-distance Ethernet links. At 25GbE, the module requires RS-FEC on the host port for operation. Its SFP28 form factor is suited to high-density switch environments, including data center, enterprise core/distribution, and high-performance networking deployments.

Key Features – SFP-10/25G-LR-S

• Data Rates: 10GbE and 25GbE
• Optical Standard: 10/25GBASE-LR
• Fiber Type: G.652 Single-Mode Fiber (SMF)
• Wavelength: 1310 nm
• Maximum Reach: 10 km
• Connector: LC duplex
• Host FEC: RS-FEC required for 25GbE operation
• Digital Optical Monitoring: Supported
• Power Consumption: 1.3 W
• Form Factor: SFP28
• Operating Temperature: 0°C to 70°C
• Hot-Pluggable: Yes

Cisco's official datasheet specifies a 10 km reach over G.652 SMF at both 10G and 25G, with 1.3 W maximum power consumption for the SFP-10/25G-LR-S.

Technical Specifications

• Processor Type: Not applicable — optical transceiver
• Chipset / Platform: Cisco SFP28 optical transceiver
• Memory Technology: Not applicable
• Storage Interface: Not applicable
• RAID Support: Not applicable
• Expansion Slots: Not applicable
• Networking: 10GbE / 25GbE Ethernet
• Optical Standard: 10/25GBASE-LR
• Fiber Interface: Single-Mode Fiber (SMF), G.652
• Wavelength: 1310 nm
• Connector Type: Duplex LC
• Maximum Transmission Distance: 10 km
• Host FEC: RS-FEC for 25GbE
• Digital Optical Monitoring: Supported
• Operating Temperature: 0°C to 70°C
• Operating Humidity: Cisco documentation specifies operating environmental requirements for the module.
• Power Consumption: 1.3 W

Physical Specifications

• Form Factor: SFP28
• Weight: 19 g / 0.019 kg / 0.042 lbs
• Dimensions: 13.4 × 8.5 × 56.5 mm
• Dimensions in Inches: 0.528 × 0.335 × 2.224 in
• Rack Compatibility: Installs into compatible SFP28-capable networking equipment; no independent rack height

Physical-specification note: Cisco's public product datasheet confirms the SFP28 form factor and optical specifications but does not publish a separate weight/dimension table for this SKU. The exact 13.4 × 8.5 × 56.5 mm and 19 g physical measurements are published by a third-party compatible-module datasheet, so they should not be represented as Cisco-published measurements.

Ideal For

• Data center switch-to-switch long-distance optical links
• Enterprise core and distribution network connectivity
• High-performance computing network infrastructure
• 10GbE-to-25GbE network migration
• Long-reach server and network infrastructure connections
• Campus or data center interconnects where single-mode fiber is already deployed
• High-density Cisco switching environments requiring SFP28 optics

Cisco specifically positions its 25G transceiver portfolio for data center, high-performance computing, enterprise core/distribution, and service-provider applications.

Warranty & Support

• Standard Manufacturer Warranty: Cisco 5-Year Limited Hardware Warranty for applicable Cisco pluggable modules, including the SFP25G product family.
• Warranty Type: Limited hardware warranty
• Support Contract Compatibility: Cisco support and service entitlement options may be available depending on the host platform, purchase channel, and contract.
• RMA Support: Warranty service is subject to Cisco's applicable warranty and RMA terms.

FAQs – SFP-10/25G-LR-S

1. What network speeds does the SFP-10/25G-LR-S support?
The SFP-10/25G-LR-S is a dual-rate optical module supporting both 10GbE and 25GbE operation.

2. What fiber cable is required for the SFP-10/25G-LR-S?
It is designed for standard G.652 single-mode fiber and operates at a 1310 nm wavelength. The specified maximum link distance is 10 km.

3. Does the SFP-10/25G-LR-S require FEC at 25GbE?
Yes. Cisco specifies that RS-FEC must be enabled on the host port for 25GbE operation.

4. Can this module be used for a 10GbE network?
Yes. The module supports 10GBASE-LR in addition to 25GBASE-LR, allowing compatible infrastructure to operate at either supported rate.

5. What connector does the SFP-10/25G-LR-S use?
The module uses a duplex LC optical connector for single-mode fiber connectivity.

6. What type of network environments is this transceiver designed for?
It is suited to high-density data center, enterprise core/distribution, high-performance computing, and other networking environments requiring long-reach 10GbE or 25GbE optical connectivity.