What is the switching capacity and port configuration of S4248FBL-ON?

Dell S4248FBL-ON provides 1.6Tbps full-duplex / 800Gbps half-duplex switching fabric with 720 Mpps forwarding. Configuration includes 40x 1/10GbE SFP+ ports, 2x 40GbE QSFP+ ports (supporting 4x10GbE breakout), 6x 100GbE QSFP28 uplinks, and 1x RJ45 console port in compact 1RU form factor.

How does deep buffering benefit data center deployments?

6GB packet buffer memory with virtual output queue (VoQ) architecture absorbs microbursts and congestion in high-density 10GbE ToR environments, preventing packet loss during east-west traffic spikes common in virtualized servers and storage fabrics.

What power and thermal specifications should be considered?

Typical consumption is 180W, max 470W with redundant 750W AC PSUs (100-240V). Thermal dissipation reaches 1604 BTU/hr; operates 0-45°C with 59.6 dBA acoustics. DC PSU option (-36V to -72V) available for telco environments.

What scale does it support for routing and VLANs?

Hardware tables scale to 750K MAC addresses, 96K IPv4 hosts, 2M IPv4 routes, 400K IPv6 routes, 4K L2 VLANs, 500 L3 VLANs, 128 MSTP instances, and 128 PVST instances for large-scale L2/L3 deployments.

Is it suitable for open networking and automation?

Yes, runs Dell OS10 for SDN compatibility with ONIE boot support. 32GB CPU memory enables advanced features like link aggregation (32 links/128 groups), ACLs (8K ingress/2K egress), and programmable pipelines for cloud orchestrators.

What transceivers and cables are compatible?

Supports 100GbE SR4 QSFP28, 10GbE SR/LR/ER/ZR SFP+ optics. Cables include QSFP28 DAC/AOC breakout to 4xSFP28, QSFP+ to 4xSFP+ DAC, and MTP optical breakouts for flexible 10/40/100GbE connectivity.

S4248FBL-ON - Dell S4248FBL-ON 1.6Tbps 40x10G 6x100G Switch

Name: Dell S4248FBL-ON 1.6Tbps 40x10G 6x100G Switch
Brand: Dell
SKU: S4248FBL-ON
Price: 4328 USD
Availability: InStock

S4248FBL-ON - Dell S4248FBL-ON 1.6Tbps 40x10G 6x100G Switch | US IT Hardware

Product overview

The Dell PowerSwitch S4248FBL-ON is a high-performance, 1RU open networking switch designed for data center top-of-rack (ToR) deployments in software-defined networking (SDN) environments. It features 40x 1/10GbE SFP+ ports for high-density server connectivity, 2x 40GbE QSFP+ ports, and 6x 100GbE QSFP28 uplinks for spine-layer aggregation, delivering 1.6Tbps full-duplex switching capacity and 720 Mpps forwarding rate. With 6GB deep packet buffering and virtual output queue (VoQ) architecture, it excels in congested networks handling bursty east-west traffic. Enhanced hardware tables support 750K MAC addresses, 2M IPv4 routes, 400K IPv6 routes, and 4K VLANs. Powered by OS10, it offers flexibility for automation and orchestration. Redundant hot-swappable 750W AC PSUs and 5 fan modules ensure high availability with I/O to PSU airflow. Ideal for cloud-scale infrastructures, hyperscale data centers, and high-frequency trading requiring ultra-low latency and wire-speed performance.

1.6Tbps full-duplex switching capacity with 720 Mpps forwarding.
40x 10GbE SFP+ ports plus 6x 100GbE QSFP28 uplinks in 1RU.
6GB deep packet buffering with VoQ for microburst handling.
Supports 750K MAC addresses and 2 million IPv4 routes.
Hot-swappable redundant PSUs and fans for high availability.
32GB CPU memory enables advanced L2/L3 SDN features.

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 #	S4248FBL-ON
Brand	Dell
Condition	Refurbished
L2 VLANs	4K
L3 VLANs	500
IPv4 Routes	2 million
IPv6 Routes	400K
Product Line	PowerSwitch S4200-ON
Product Type	Networking Switch
MAC Addresses	750K
MSTP Instances	64

Compatible systems

Optimized for Dell PowerEdge servers; broad NOS compatibility via ONIE for SDN flexibility.

Dell PowerEdge
Model: R-series
Form factor: 1U/2U Rack
Generation: 14G+
Direct 10GbE SFP+ server connectivity

Best for

Data Center ToR
High-density 10GbE server access with 100GbE uplinks for leaf-spine fabrics handling east-west traffic.
SDN Deployments
Open networking OS10 supports automation, orchestration, and virtual output queuing for programmable fabrics.
Cloud Networking
Deep 6GB buffering manages microbursts in multi-tenant environments with 720 Mpps forwarding.
HPC Clusters
1.6Tbps non-blocking switching with low-latency QSFP28 uplinks for compute-intensive workloads.
High-Frequency Trading
Enhanced table scales (750K MAC, 2M IPv4 routes) and VoQ ensure deterministic performance.
Enterprise Aggregation
Flexible 10/40/100GbE port breakout supports migration from 10G to 100G infrastructures.

Details

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Forwarding Rate	720 Mpps
Switching Capacity	1.6Tbps full-duplex/800Gbps half

Power Maximum	470W
Power Typical	180W
Power Supplies	2x hot-swap 750W AC redundant

Weight	22 lbs (9.98 kg)
Form Factor	1RU rackmount, 1.72x17.1x18.2in

Fans	5x hot-swap modules
Airflow	I/O Panel to PSU
Acoustics	59.6 dBA at 23°C
Operating Temp	0° to 45°C (32°-104°F)
Thermal Dissipation	1604 BTU/hr

Uplink Ports	2 x 40GbE QSFP+, 6 x 100GbE QSFP28
Downlink Ports	40 x 1/10GbE SFP+
Management Port	1 x RJ45 console RS232

Dell S4248FBL-ON 1.6Tbps 40x10G 6x100G Switch

Product overview

Featuring

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

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