Cisco SFP-10/25G-LR-I
10/25GBASE-LR-I SFP28 iTemp Module, Original Cisco
Product Highlights
Deploying high-speed links in extreme environments — outdoor telecom cabinets, industrial plants, or uncontrolled edge sites — demands optics that won't quit when temperatures swing. The Cisco SFP-10/25G-LR-I is an industrial-temperature SFP28 transceiver engineered to deliver reliable 10/25GBASE-LR connectivity over single-mode fiber in conditions that would compromise standard commercial-grade modules.
This dual-rate module operates at both 10G and 25G data rates over distances up to 10 kilometers on G.652 SMF, using a 1310 nm wavelength and a duplex LC/PC connector. Its extended operating temperature range of -40°C to 85°C makes it ideal for deployments where environmental control is limited or nonexistent. RS-FEC is required on the host port for full 10 km reach at 25G; without FEC, reduced distances apply.
Beyond standard Ethernet, the SFP-10/25G-LR-I supports CPRI data rate options 7 through 10, making it a strong fit for wireless fronthaul, backhaul, and radio access network transport. Whether you're upgrading a campus backbone, extending a metro ring, or connecting cell-site equipment, this original Cisco transceiver delivers the ruggedness and dual-rate flexibility that demanding edge and industrial networks require.
Features & Benefits
Dual-Rate 10G/25G Flexibility
The SFP-10/25G-LR-I supports both 10GBASE-LR and 25GBASE-LR operation, allowing network teams to deploy a single optic today and upgrade link speeds later without swapping hardware. This dual-rate capability protects your investment and simplifies sparing inventory across mixed-generation infrastructure.
Industrial-Grade Temperature Resilience
Rated for continuous operation from -40°C to 85°C, this module is built for environments where standard commercial optics (0°C to 70°C) would fail. Deploy confidently in outdoor telecom shelters, roadside cabinets, factory floors, and other locations with wide temperature swings.
Long-Range Single-Mode Fiber Reach
Achieve link distances of up to 10 km on standard G.652 SMF at both 10G and 25G speeds. The 1310 nm wavelength and duplex LC/PC connector provide a proven, standards-based optical interface for campus, metro, and inter-building connectivity.
CPRI Support for Mobile Transport
With support for CPRI data rate options 7, 8, 9, and 10, this transceiver extends beyond Ethernet into wireless fronthaul and backhaul applications. Carriers and mobile operators can use it to connect radio units to baseband controllers over 10 km SMF spans in temperature-extreme cell-site environments.
Digital Optical Monitoring (DOM)
Built-in DOM/DDM provides real-time visibility into optical output power, receive power, temperature, bias current, and supply voltage. These diagnostics enable proactive troubleshooting and help prevent link degradation before it impacts service.
Deployment Scenarios
Outdoor Telecom & Cell-Site Connectivity
Connect remote radio heads, small cells, and base station equipment to aggregation points over 10 km SMF spans. The industrial temperature rating and CPRI support make this transceiver ideal for uncontrolled outdoor cabinets and tower-mounted enclosures exposed to extreme heat and cold.
Industrial & Manufacturing Networks
Link switches and routers across factory floors, refineries, or utility substations where ambient temperatures routinely exceed commercial optic limits. The SFP-10/25G-LR-I ensures uninterrupted 10G or 25G Ethernet connectivity in these harsh operational technology (OT) environments.
Campus & Metro Backbone Extension
Extend high-speed links between campus buildings or metro-area sites up to 10 km apart. Dual-rate operation lets you start at 10G and upgrade to 25G as bandwidth demands grow, without replacing the transceiver or re-cabling.
Phased 10G-to-25G Network Migration
Standardize on a single transceiver SKU across your 10G and 25G infrastructure. The dual-rate capability simplifies procurement, reduces sparing complexity, and provides a seamless upgrade path as you transition switch platforms from 10G to 25G.
General
Performance
Optical / Physical
Power
Environmental
Compliance
Compatibility Notes
The Cisco SFP-10/25G-LR-I is supported on a wide range of Cisco platforms with SFP28-capable ports. Always verify compatibility for your specific hardware and software version using the Cisco Transceiver Module Group (TMG) Compatibility Matrix.
Key requirements:
- RS-FEC must be enabled on the host port for full 10 km reach at 25G. Without RS-FEC, reduced reach applies (approximately 3.5 km with BASE-R FEC, approximately 1.5 km without FEC, depending on fiber quality).
- Only PC or UPC polished patch cords are supported. APC connectors are not supported.
- Fiber type: Standard G.652 single-mode fiber (9/125 µm).
Downloads & Resources
Frequently Asked Questions
| Part Number | Product | Key Difference |
|---|---|---|
| SFP-10/25G-LR-S | Cisco 10/25GBASE-LR SFP28 (Commercial Temp) | Same dual-rate LR optics and 10 km reach but rated for commercial temperature (0°C to 70°C) — choose the -I variant for industrial/outdoor deployments. |
| SFP-25G-ER-I | Cisco 25GBASE-ER SFP28 (Industrial Temp) | Extended-reach industrial-temp module for distances beyond 10 km (up to 40 km) — select when LR range is insufficient for metro or long-haul spans. |
| SFP-10/25G-CSR-S | Cisco 10/25GBASE-CSR SFP28 (Short Range) | Short-range multimode fiber module (up to 300–400 m on OM3/OM4) — lower cost for intra-building or intra-rack connections where 10 km reach is unnecessary. |
| SFP-10/25G-BXU-I | Cisco 10/25G BiDi SFP28 Upstream (Industrial Temp) | Single-fiber bidirectional industrial-temp module — saves fiber strands by using separate TX/RX wavelengths on one SMF strand (pair with SFP-10/25G-BXD-I). |