SFP Module Cisco SFP-10G-LR-RFB — 10GBASE-LR, 1310 nm, up to 10 km

Cisco SFP-10G-LR-RFB is a hot-pluggable SFP+ optical transceiver module that provides 10GBASE-LR connectivity over single-mode fiber at a wavelength of 1310 nm. Engineered to fit standard SFP+ ports, the module supports link distances up to 10 km and is compatible with Cisco switches and routers that accept SFP-10G-LR-RFB media. The transceiver enables reliable 10 Gigabit Ethernet links for data center aggregation, campus backbone upgrades, and inter-building connections.

Advantages

The SFP-10G-LR-RFB offers standard SFP+ form factor interoperability and Cisco compatibility for straightforward integration into existing network equipment. It supports 10GBASE-LR performance at 1310 nm, providing low-latency, high-bandwidth links with reach up to 10 km over single-mode fiber. Its hot-pluggable design allows replacement or upgrades without powering down equipment, and the proven optics deliver stable performance for backbone and aggregation layers.

Suitable for

• Extending 10 Gigabit Ethernet links between switches and routers over single-mode fiber
• Data center uplinks and aggregation ports
• Connecting equipment across buildings or campus networks up to 10 km apart
• Upgrading backbone connections on Cisco-compatible platforms

Key specifications

• Brand: Cisco
• Manufacturer part number (MPN): SFP-10G-LR-RFB
• EAN: 5712505632482
• Interface: SFP+ (hot-pluggable)
• Standard: 10GBASE-LR
• Wavelength: 1310 nm
• Maximum reach: up to 10 km over single-mode fiber
• Application: 10 Gigabit Ethernet

How to use

Install the SFP-10G-LR-RFB module into an available SFP+ slot on a compatible Cisco switch or router until it clicks into place. Connect single-mode fiber with appropriate LC connectors and ensure correct transmit/receive orientation. Verify link status and speed through the device management interface or CLI to confirm a 10 Gbps connection. The transceiver is hot-pluggable, but follow your equipment vendor’s best practices when inserting or removing modules to avoid port or module damage.

Recommendations

Select single-mode fiber cabling rated for 1310 nm and maintain proper connector cleanliness to ensure signal integrity. Confirm that the target Cisco device firmware and hardware accept third-party or Cisco-branded SFP-10G-LR-RFB modules and check for any platform-specific compatibility notes. For runs near the 10 km limit, test link margin and use certified fiber to avoid signal degradation.