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SFP-10G-LR: Cisco 10GBASE-LR SFP+ Optical Transceiver

Cisco SFP-10G-LR Transceiver10GbESFP+
CiscoTransceivers

Also listed as: 10-2457-02, SFP-10G-LR=, 0231A0A6

The Cisco SFP-10G-LR is a standard 10GBASE-LR SFP+ optical transceiver module supporting links up to 10 kilometers over single mode fibre for campus backbones and data center interconnects.

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Specifications

Part numberSFP-10G-LR
BrandCisco
TypeTransceivers
Other numbers10-2457-02, SFP-10G-LR=, 0231A0A6
Statuscurrent
Form factorSFP+
Speed10GbE
Wavelength nm1,310
ConnectorLC duplex
Cable typeSingle Mode Fibre
Max distance m10,000

About the SFP-10G-LR

The Cisco SFP-10G-LR module delivers 10 Gigabit Ethernet connectivity for enterprise wiring closets, core switches, and data center fabrics. It operates at a nominal optical wavelength of 1310 nanometers across standard single mode fibre cabling infrastructure. It supports Digital Optical Monitoring functionality, allowing network engineers to view real time optical transmit levels, optical receive power, internal operating temperatures, and supply voltages via switch diagnostic routines.

Compatibility

Compatible across Cisco Nexus 9000, Nexus 7000, Nexus 5000, Nexus 3000, and Catalyst 9000 Series enterprise modular and fixed aggregation switches. It integrates into SFP+ and SFP28 multi-rate physical switch ports, operating smoothly without supplementary configuration commands. It complies with the SFF-8431 and SFF-8472 industry specifications for multi-source optical transceivers.

How to identify a genuine unit

Recognizable by its metallic SFP+ housing with a blue release latch bail denoting longwave single mode optical transmission. The front label shows the Cisco corporate logo, exact part number SFP-10G-LR, hardware revision code, assembly number 10-2457-02, and unique laser-etched serial tracking information for asset validation.

Buying used

When buying secondary market transceivers, check the optical receiver and transmitter bores for scratches, dust ingress, and debris under optical inspection microscopes. Connect the transceiver into a live Cisco NX-OS or IOS-XE switch port to verify authentic Cisco security microcode and validate that Digital Optical Monitoring outputs live operating metrics.

Fits these models

Works together

How the Cisco SFP-10G-LR connects to servers, storage and the network: 3 ways, with the hardware on each path.

iSCSI and NVMe/TCP over EthernetFile storage (NFS and SMB)Hyperconverged cluster

iSCSI and NVMe/TCP over Ethernet

Keep the speed the same at all three points: a 25GbE server, a 25GbE switch port and a 25GbE array port. Mixed speeds work but the slowest link sets the pace.

Adapters for the server

Switches

Storage

iSCSI and NVMe/TCP over Ethernet: how it fits together

File storage (NFS and SMB)

Front-end ports face the clients; back-end ports (on scale-out systems) connect the nodes to each other and need their own switch pair.

Adapters for the server

Switches

Storage

File storage (NFS and SMB): how it fits together

Hyperconverged cluster

Plan at least two 25GbE ports per node to two switches; all-NVMe clusters often move to 100GbE.

HCI nodes

Adapters for the server

Switches

Hyperconverged cluster: how it fits together

Plan and size it

Check compatibility with Cisco

Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Cisco has tested with the Cisco SFP-10G-LR.

FAQ

What is the maximum link length for the Cisco SFP-10G-LR?

It supports operational transmission distances up to 10 kilometers on standard single mode fibre.

What connector type is required for SFP-10G-LR?

It requires an industry standard dual LC optical connector interface.

Buying or selling SFP-10G-LR?

New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.

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