What is the switching capacity of the Dell S4128T-ON?

The S4128T-ON provides 960Gbps full-duplex non-blocking cut-through switching capacity, delivering line-rate performance across all 28x 10GBASE-T and 2x 100GbE QSFP28 ports simultaneously. This supports high-density ToR deployments with 720Mpps forwarding rate.

Does the S4128T-ON support flexible operating systems?

Yes, it features ONIE for zero-touch installation of Dell OS10 Enterprise Edition or third-party NOS like Cumulus Linux, enabling open networking and software-defined infrastructure in data centers.

What port configurations does the S4128T-ON offer?

It includes 28x multi-rate 10GBASE-T RJ45 ports supporting 1/10GbE and 2x QSFP28 uplinks supporting 10/25/40/50/100GbE, allowing flexible speed profiles for server/storage connectivity and aggregation.

Is the S4128T-ON suitable for spine/leaf architectures?

Yes, its 960Gbps fabric, stackability, and multi-rate uplinks make it ideal as a leaf switch in spine/leaf designs, with VXLAN gateway support for overlay networks and DCB for storage traffic.

What power and cooling options are available?

Dual redundant hot-swappable 550W AC PSUs with max consumption around 300W. Supports front-to-back or back-to-front airflow via field-replaceable fan modules for data center flexibility.

What advanced features does it support?

Includes 4K VLANs, 200K IPv4 routes, 128 link aggregation groups, PTP 1588v2 timing, and converged networking with DCB, optimized for modern data center L2/L3 requirements.

S4128T-ON - Dell S4128T-ON 28x10G-T 2x100G 960Gbps ToR Switch

Name: Dell S4128T-ON 28x10G-T 2x100G 960Gbps ToR Switch
Brand: Dell
SKU: S4128T-ON
Price: 3440 USD
Availability: InStock

S4128T-ON - Dell S4128T-ON 28x10G-T 2x100G 960Gbps ToR Switch | US IT Hardware

Product overview

The Dell PowerSwitch S4128T-ON is a high-performance 1U top-of-rack open networking switch designed for 10GbE copper terminations to servers and storage in data centers. It features 28 x 10GBASE-T RJ45 ports for high-density connectivity and 2 x 100GbE QSFP28 uplink ports supporting multi-rate 10/25/40/50/100GbE speeds. With a 960Gbps full-duplex non-blocking cut-through switching fabric, it ensures line-rate performance under full load. ONIE compatibility enables zero-touch provisioning of Dell OS10 or third-party NOS like Cumulus Linux. Key benefits include VXLAN gateway functionality for overlay networks, DCB support for converged networking, stackability, and flexible airflow options (front-to-back or back-to-front). Redundant hot-swappable 550W AC PSUs and fans provide high availability. Ideal for spine/leaf architectures, cloud providers, HPC, and enterprise environments requiring low-latency east-west traffic and scalable L2/L3 features like 4K VLANs and 200K IPv4 routes.

960Gbps full-duplex non-blocking switching capacity.
28x 10GBASE-T ports plus 2x 100GbE QSFP28 uplinks.
ONIE support for Dell OS10 or third-party NOS.
Redundant hot-swappable 550W AC power supplies.
Multi-rate ports support 1/10/25/40/50/100GbE speeds.
DCB and VXLAN for converged and overlay networking.

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

Manufacturer part #	S4128T-ON
Brand	Dell
Condition	Refurbished
PoE	No
Model	S4128T-ON
Stackable	Yes
DCB Support	Yes, converged networking
Product Line	PowerSwitch S4100-ON Series
Product Type	Networking Switch
VXLAN Support	Yes, gateway functionality
Operating System	Dell OS10 Enterprise (ONIE compatible)

Compatible systems

Optimized for Dell PowerEdge servers; broad ONIE NOS compatibility; requires separate QSFP28 transceivers/DACs.

Dell PowerEdge
Model: R-series
Form factor: 1U/2U Rack
Generation: 14G/15G
Direct 10GBASE-T server connectivity

Best for

Data Center Top-of-Rack
High-density 10GbE copper connectivity for servers and storage with 100GbE uplinks to spine switches.
Cloud Provider Infrastructure
ONIE-enabled for custom NOS, VXLAN overlay bridging/routing at line rate for virtualized networks.
High-Performance Computing
960Gbps non-blocking fabric with low-latency cut-through switching for east-west traffic.
Enterprise Data Center
DCB support for converged networking, stackable design for scalable L2/L3 deployments.
Spine/Leaf Architecture
Multi-rate QSFP28 ports enable flexible 10/25/40/100GbE speeds in leaf positions.
Storage Networking
28x 10GBASE-T ports optimize copper terminations to high-performance storage arrays.

Details

Shipping, warranty & returns

Customer reviews

No reviews yet — be the first to review this part.

Latency	Cut-through non-blocking
PTP Timing	1588v2 supported
IPv4 Routes	200K (scaled L3 mode)
VLAN Support	4K Layer 2 VLANs
Forwarding Rate	720Mpps
Link Aggregation	32 links/group, 128 groups
Switching Capacity	960Gbps full-duplex non-blocking

Power Supplies	2 x redundant hot-swappable 550W AC
Max Power Consumption	300W

Fans	4 x redundant hot-swappable
Airflow	Front-to-Back or Back-to-Front

Ports	28 x 10GBASE-T RJ45, 2 x 100GbE QSFP28
Multi-rate Ports	10GBASE-T: 1/10GbE; QSFP28: 10/25/40/50/100GbE

Dell S4128T-ON 28x10G-T 2x100G 960Gbps 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