The Cisco SFP-25G-SR-S is a key component of Cisco 25GBASE SFP28 portfolio, engineered to provide high-density, low-power 25 Gigabit Ethernet solutionsCisco. Operating at an 850nm wavelength with VCSEL laser technology, it supports link distances of up to 70 meters on OM3 fiber and 100 meters on OM4 fiber. Featuring a standard duplex LC connector and SFP28 form factor, this module ensures seamless integration with Cisco switches, routers, and servers. It is fully compliant with IEEE 802.3by standards and requires RS-FEC on host ports for optimal performance. With built-in Digital Optical Monitoring (DOM), it enables real-time tracking of critical optical parameters, enhancing network reliability and manageability.
表格
| Feature | Business Benefit |
|---|---|
| 25Gbps High-Speed Data Rate | Enables ultra-fast data transfer, supporting bandwidth-intensive applications and reducing network bottlenecks. |
| SFP28 Hot-Swappable Design | Allows for installation, replacement, and upgrades without powering down the network, minimizing downtime and operational costs. |
| 850nm VCSEL Laser | Delivers reliable short-range transmission over cost-effective multimode fiber, ideal for data center interconnections. |
| Low Power Consumption (~1.2W) | Optimizes energy efficiency in high-density deployments, reducing cooling requirements and total cost of ownership (TCO). |
| Digital Optical Monitoring (DOM) | Provides real-time visibility into module health (temperature, voltage, power levels), simplifying troubleshooting and proactive maintenance. |
| IEEE 802.3by Compliance | Ensures interoperability with other standards-based 25G networking equipment, protecting investment and facilitating multi-vendor environments. |
| Cisco-Certified Reliability | Rigorously tested on Cisco SFP28 ports for superior performance, quality, and long-term dependability. |
| 5-Year Standard Warranty | Offers long-term peace of mind and reduces maintenance expenses. |
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| Parameter | Specification |
|---|---|
| Product Model | SFP-25G-SR-S |
| Form Factor | SFP28 (Small Form-Factor Pluggable 28) |
| Data Rate | 25 Gbps (25GBASE-SR) |
| Wavelength | 850 nm (VCSEL) |
| Connector Type | Duplex LC (UPC) |
| Fiber Type | Multimode Fiber (MMF) – OM3, OM4/OM5 |
| Maximum Link Distance | 70m (OM3), 100m (OM4/OM5) |
| Transmitter Power | -8.4 to +2.0 dBm |
| Receiver Sensitivity | -10.3 dBm |
| Power Consumption | Approx. 1.2 W |
| Operating Temperature | 0°C to 70°C (32°F to 158°F) |
| Digital Diagnostics | Digital Optical Monitoring (DOM/DDM) supported |
| Compliance | IEEE 802.3by, SFF-8431 |
| Required Host Feature | RS-FEC (Reed-Solomon Forward Error Correction) on host ports |
| Warranty | 5-year standard replacement warranty |
A: The SFP-25G-SR-S is the standard commercial temperature version of Cisco’s 25GBASE-SR SFP28 module. The “-S” suffix denotes the standard operating temperature range (0°C to 70°C). There is no functional difference in performance or specifications between SFP-25G-SR and SFP-25G-SR-S; they are often used interchangeably.
A: While designed and certified for Cisco platforms, the SFP-25G-SR-S is compliant with IEEE 802.3by standards, which allows for interoperability with other vendors’ SFP28 ports that support 25GBASE-SR and RS-FEC. However, full compatibility and support are only guaranteed on Cisco equipment.
A: No. The SFP-25G-SR-S is specifically designed for multimode fiber (MMF) at 850nm. Using it with single-mode fiber will result in poor performance or no link. For single-mode applications, consider Cisco’s 25GBASE-LR or 25GBASE-ER modules.
A: RS-FEC (Reed-Solomon Forward Error Correction) is an error-correction protocol that enhances signal integrity over 25Gbps links. The SFP-25G-SR-S requires RS-FEC to be enabled on the host switch/router port to achieve the specified maximum link distances and reliable operation.
A: The module supports Digital Optical Monitoring (DOM). You can access real-time diagnostic data (e.g., temperature, voltage, transmit power, receive power) through the command-line interface (CLI) of the connected Cisco device or via network management tools like Cisco DNA Center.
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