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Small rectangular SFP28 transceiver module with matte metal body and LC duplex port

Cisco Systems, Inc.

Cisco Systems, Inc. SFP1025GCSRS= SFP28 transceiver 10/25G CSR

SKU CH-YNR8-YRENZ MPN SFP1025GCSRS=

A dual-rate SFP28 transceiver delivering 10G or 25G over multi-mode fibre with LC duplex connectors

  • Device TypeTransceiver
  • Standards25GBase-SR 10GBase-SR
  • Network MediaMedia Type Supported: Optical Fiber Fiber Mode Supported: Mu
  • PortsTotal Number of Ports: 1 Connector Type: LC/PC Interfaces/Po
  • Dual-rate 10G/25G operation in one module
  • 25GBase-CSR reaches 300m over OM3 and 400m over OM4
  • 10GBase-SR reaches 300m over OM3 and 400m over OM4
  • MSA-compliant SFP28 form factor fits standard cages
  • Pre-coded serialization avoids network conflicts

Cisco SFP28 10/25G CSR Transceiver

This Cisco SFP28 transceiver delivers 10G and 25G Ethernet over multi-mode fibre with an LC duplex connector. It follows the 25GBase-SR and 10GBase-SR standards and reaches 300 or 400 metres on OM3 and OM4 at 10G. At 25G the same reach applies when the host port enables RS-FEC.

Network teams needing dual-rate 10G

The module suits environments that run both speeds on the same hardware and want a single part number for spares. It is not for links beyond 400 metres, single-mode fibre plants, or direct-attach copper cabling. Buyers who need longer reach or a different media type should look at other transceiver families.

Confirm the switch port supports RS-FEC for full

Without RS-FEC the 25G link drops to 70 or 100 metres with BASE-R FEC, or 30 to 50 metres with no FEC. For 10G operation FEC is not required. Verify the LC patch cables are OM3 or OM4 multi-mode and that the host firmware recognises the Axiom-coded part number.

Highlights

  • Dual-rate 10G/25G operation in one module
  • 25GBase-CSR reaches 300m over OM3 and 400m over OM4
  • 10GBase-SR reaches 300m over OM3 and 400m over OM4
  • MSA-compliant SFP28 form factor fits standard cages
  • Pre-coded serialization avoids network conflicts

Specifications

BrandAxiom Memory Solutions
Part NumberSFP-10/25G-CSR-S=
Device TypeTransceiver
Standards25GBase-SR
10GBase-SR
Network MediaMedia Type Supported:
Optical Fiber
Fiber Mode Supported:
Multi-mode
Ethernet Technology:
25 Gigabit Ethernet
PortsTotal Number of Ports:
1
Connector Type:
LC/PC
Interfaces/Ports Details:
1 x LC/PC Duplex 25GBase-CSR Network
Shipping weight0.45 kg
Package size152 × 140 × 13 mm

Questions about this item

What host port configuration is required for the SFP1025GCSRS= to achieve full 25G reach over OM3/4 fibre?

The host port must enable RS-FEC for full 300/400m reach at 25G; BASE-R FEC gives 70/100m and without FEC only 30/50m over OM3/4.

Can the SFP1025GCSRS= operate at 10G in a switch that does not support FEC?

Yes, 10G operation does not require FEC and the module will run up to 300/400m over OM3/4 without any forward-error-correction setting.

How can I verify the SFP1025GCSRS= is transmitting at the intended 25G speed after installation?

Check the switch port diagnostics for a 25GBase-SR link with RS-FEC active and confirm the reported reach matches the 300/400m OM3/4 specification.

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