Dell Networking S5148F 48-Port 25GbE SFP28 + 6-Port 100GbE QSFP28 Switch — S5148F

The Dell S5148F is a high-density 48-port 25GbE SFP28 data center switch with 6x 100GbE QSFP28 uplink ports in a 1U rack-mountable form factor. Running Dell OS10 (SONiC-based), it delivers wire-rate Layer 3 switching for data center leaf deployments in spine-leaf architectures — providing maximum 25GbE server access density with 100GbE spine uplinks for modern cloud and enterprise data center fabrics.

Key Features

• 48x 25GbE SFP28: Maximum 25GbE density for data center server access
• 6x 100GbE QSFP28 Uplinks: High-bandwidth spine connectivity
• Dell OS10: SONiC-based open network OS for automation and flexibility
• Wire-Rate Layer 3: Non-blocking switching at full line rate
• 1U Form Factor: Maximum density in minimal rack space
• Open Networking: Supports third-party NOS options

Technical Specifications

• Part Number: S5148F
• Access Ports: 48x 25GbE SFP28
• Uplink Ports: 6x 100GbE QSFP28
• Switch Type: Layer 3 Managed
• OS: Dell OS10 (SONiC-based)
• Form Factor: 1U rack-mountable

Use Cases

• Data Center Leaf: 25GbE server access in spine-leaf fabric
• Cloud Infrastructure: High-density 25GbE for cloud server deployments
• HPC Clusters: 25GbE interconnect for high-performance computing nodes
• Enterprise Data Center: Modern 25GbE access layer replacing 10GbE

Compatibility Notes

• Compatible with 25GbE SFP28 DAC cables, AOC cables, and optical transceivers
• 100GbE QSFP28 uplinks support DAC cables and optical transceivers
• Managed via Dell OS10 CLI, REST API, and Dell OpenManage
• Supports open networking with third-party NOS options

Frequently Asked Questions

What operating system does the S5148F run?

The S5148F runs Dell OS10, which is based on SONiC (Software for Open Networking in the Cloud) — an open-source network OS enabling automation, programmability, and third-party NOS support.

Can the 100GbE QSFP28 ports be broken out to 4x25GbE?

Yes — each 100GbE QSFP28 port can be broken out to 4x25GbE using QSFP28 breakout cables, providing additional 25GbE port capacity.

What is the difference between S5148F and S5148F-ON?

The S5148F-ON is the Open Networking variant supporting third-party NOS installation. The S5148F typically ships with Dell OS10 pre-installed.

Product Details

• Part Number: S5148F
• Manufacturer: Dell Technologies
• Model: S5148F
• Product Type: 25GbE Data Center Leaf Switch

Whether you are building a high-density 25GbE data center leaf layer, deploying cloud infrastructure with maximum server access density, or modernizing a 10GbE data center to 25GbE, the Dell S5148F delivers the 48-port density, 100GbE uplinks, and OS10 programmability your data center demands.