What is the port configuration and switching capacity of S4148U-ON?

Features 24 unified SFP+ ports (10GbE or FC8/16/32G), 24x 10GbE SFP+, 2x 40GbE QSFP+, 4x QSFP28 (10/25/40/50/100GbE or FC). Delivers 1.76Tbps full-duplex switching and 1320 Mpps forwarding for line-rate performance on all ports simultaneously.

Does the S4148U-ON support Fibre Channel over Ethernet?

Yes, 24 unified ports support FC8/16/32G alongside 10GbE; up to 28x 8/16G FC or 16x 32G FC ports possible. DCB features like PFC, DCBX, ETS ensure lossless converged networking for iSCSI/FC storage.

What latency and scalability does it offer for data centers?

Ultra-low 800ns port-to-port latency with cut-through switching. Scales to 272K MAC entries, 200K IPv4 routes, 4K VLANs, 128 LAG groups for large-scale topologies and VXLAN L2/L3 gateways.

Is the S4148U-ON compatible with open networking?

ONIE-enabled for installing Dell SmartFabric OS10, Cumulus Linux, or other third-party NOS. Provides configuration profiles for non-blocking performance in packet-loss sensitive workloads.

What airflow and redundancy options are available?

Supports PSU-to-I/O or I/O-to-PSU airflow for hot/cold aisles. Includes redundant hot-swappable AC PSUs (460W) and 4x fan modules for high availability in ToR deployments.

How does it perform in spine/leaf architectures?

1.76Tbps capacity with multi-rate uplinks enables dense leaf/spine fabrics alongside S-Series ToR switches. VXLAN support and 130K IPv6 routes handle scale-out cloud and storage traffic efficiently.

S4148U-ON - Dell S4148U-ON 1.76Tbps 48x10G 4x100G ToR Switch

Name: Dell S4148U-ON 1.76Tbps 48x10G 4x100G ToR Switch
Brand: Dell
SKU: S4148U-ON
Price: 3095 USD
Availability: InStock

S4148U-ON - Dell S4148U-ON 1.76Tbps 48x10G 4x100G ToR Switch | US IT Hardware

Product overview

The Dell PowerSwitch S4148U-ON is a high-performance 1RU top-of-rack switch designed for demanding data center environments. It features 24 unified ports supporting 10GbE SFP+ or FC8/16/32G, 24 fixed 10GbE SFP+ ports, 2x 40GbE QSFP+, and 4x multi-rate QSFP28 ports (10/25/40/50/100GbE or FC). With 1.76Tbps full-duplex non-blocking switching capacity and 1320 Mpps forwarding rate, it ensures line-rate performance under full load. Ultra-low latency of 800ns enables rapid packet delivery for east-west traffic in cloud, HPC, and converged storage deployments. Supports ONIE for flexible NOS choices including Dell OS10, Cumulus, or others. Architectural highlights include PSU-to-I/O airflow, hot-swappable PSUs/fans, L2/L3 VXLAN gateway, DCB with PFC/ETS/DCBX for lossless iSCSI/FC. MAC table scales to 272K entries; IPv4 routes to 200K. Ideal for leaf/spine fabrics, storage fabrics, and virtualized data centers requiring density, flexibility, and multirate speeds.

1.76Tbps full-duplex non-blocking switching capacity.
1320 Mpps forwarding rate with 800ns port latency.
48 ports: 24 unified 10GbE/FC, 24x10GbE, 2x40GbE, 4x100GbE.
Multi-rate QSFP28 supports 10/25/40/50/100GbE or FC32G.
272K MAC addresses; 200K IPv4 routes in L3 mode.
ONIE-enabled for Dell OS10 or third-party network OS.

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Link Aggregation
Manufacturer part #	S4148U-ON
Brand	Dell
Condition	Refurbished
Model	S4148U-ON
VLANs	4,096
Standards	IEEE 802.3, DCB, VXLAN
IPv4 Routes	200,000 (L3 mode)
NOS Support	ONIE, OS10, 3rd party
Product Line	PowerSwitch S-Series
Product Type	Networking Switch
Switch Layer	L2/L3 managed

Compatible systems

Optimized for Dell PowerEdge servers; ONIE enables broad NOS flexibility; supports standard SFP+/QSFP transceivers.

Dell PowerEdge
Model: R-series
Form factor: 1U/2U Rack
Generation: 13G+
10GbE server connectivity via SFP+.
Dell PowerEdge
Model: FX2
Form factor: Blade Chassis
Generation: Blade
Unified FC/Ethernet for storage.

Best for

Data Center Top-of-Rack
High-density 10GbE server connectivity with 100GbE uplinks for east-west traffic in scale-out clusters.
Leaf/Spine Fabric
Non-blocking L2/L3 switching in multi-tier fabrics with VXLAN overlay support for cloud providers.
Converged Storage
Unified FC/Ethernet ports enable DCB lossless iSCSI and FC SAN fabrics with PFC flow control.
Cloud Networking
ONIE flexibility for SmartFabric OS10 or third-party NOS in tier-2 CSP environments.
HPC Environments

Details

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Latency	800 nanoseconds
Forwarding Rate	1320 Mpps
Switching Capacity	1.76Tbps full-duplex

Fans	4x hot-swap modules
Airflow	PSU-to-I/O or I/O-to-PSU

FC Support	8/16/32G on unified ports
Port Density	48 fixed ports
Uplink Ports	2x 40GbE QSFP+, 4x QSFP28 (10/25/40/50/100GbE/FC)
Downlink Ports	24x unified 10GbE/FC SFP+, 24x 10GbE SFP+

Dell S4148U-ON 1.76Tbps 48x10G 4x100G ToR Switch

Product overview

Featuring

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Network & Communication

Power Consumption

Physical Characteristics

Environmental

Interface/Ports

Frequently asked questions