Dell S4128F-ON / S4128T-ON - 28x 10GbE SFP+/10GBASE-T, 2x 100GbE QSFP28, AC PSU, 4x Hot-Swap Fans, I/O to PSU & PSU to I/O Airflow, 1U

Dell EMC Networking S4128F-ON and S4128T-ON are high-performance 10/100GbE open networking switches designed for next-generation data centres and enterprise networks that require greater port density and flexibility. The S4128F-ON provides 28 × 10GbE SFP+ ports and 2 × 100GbE QSFP28 uplinks, while the S4128T-ON offers 28 × 10GBASE-T copper ports with the same uplink configuration, ensuring seamless connectivity across diverse infrastructures. Designed for top-of-rack (ToR) and middle-of-row (MoR) deployments, these 1U switches deliver high throughput, low latency, and simplified management in compact form factors.

Leveraging Dell’s Open Networking architecture, the S4128 series supports Dell OS10 Enterprise Edition, Cumulus Linux, and SONiC, allowing users to deploy flexible and programmable network environments. The switches feature hot-swappable redundant power supplies and fans for improved reliability, along with comprehensive Layer 2/3 support, VXLAN, automation capabilities, and telemetry integration for real-time visibility and control. The S4128F-ON and S4128T-ON provide the scalability and operational efficiency required for modern enterprise, cloud, and service provider applications.

KEY FEATURES:

• Total Ports: 28 × 10GbE SFP+ or 28 × 10GBASE-T ports with 2 × 100GbE QSFP28 uplinks
• Switching Capacity: Up to 960 Gbps (full duplex)
• Forwarding Rate: Up to 720 Mpps
• CPU: Intel Atom C2558 Quad-Core, 2.4 GHz
• System Memory: 8 GB DDR3
• Flash Storage: 16 GB eMMC
• Packet Buffer: 12 MB
• MAC Address Table Size: 128K entries
• VLAN Support: Up to 4,094 VLANs
• Latency: <600 ns (10GbE)
• Form Factor: 1U fixed rack-mount design
• Airflow: Front-to-Back or Back-to-Front airflow options
• Fans: 3 × Hot-swappable, variable-speed modules with N+1 redundancy
• Power Supply: Dual hot-swappable AC or DC PSUs
• Power Consumption: Typical 260W / 300W, Maximum 160W / 250W
• Dimensions (WxHxD): 17 × 1.75 × 18 in (43.1 × 4.125 × 20.9 cm)
• Weight: 8.92 kg (19.66 lbs) / 9.38 (20.67 lbs)
• Operating Temperature: 0°C to 45°C
• Supported OS: Dell OS10, Cumulus Linux, SONiC
• Management Ports: RJ45 Console, Micro-USB Console, Out-of-Band RJ45 Management
• Mounting: Standard 1U rack-mountable chassis

TECHNICAL SPECIFICATIONS:

HARDWARE:

PERFORMANCE:

SECURITY:

MANAGEMENT:

PHYSICAL & ENVIRONMENTAL:

ADVANCED FEATURES:

Open Networking & OS Flexibility:

The S4128F-ON and S4128T-ON switches leverage Dell’s Open Networking (ON) architecture, giving organizations the ability to choose the network operating system that best fits their deployment needs. Supported OS options include Dell OS10 Enterprise Edition, Cumulus Linux, and SONiC, enabling enterprises to implement disaggregated networking strategies, software-defined networking (SDN), and multi-vendor integrations. The switches allow programmable APIs, CLI automation, scripting, and integration with DevOps workflows, which helps accelerate deployment and configuration while reducing human error. They are ideal for enterprise campuses, cloud data centers, hyperscale environments, and service provider networks. Additionally, these switches support multi-tenant orchestration and policy enforcement, and enable rapid adaptation to evolving network standards, making them future-ready for new applications and workloads.

High-Density Connectivity & Scalable Topology:

With 28 high-speed ports and 2 × 100GbE uplinks, these switches are designed to maximize port density in 1U rack spaces, making them ideal for Top-of-Rack (ToR), Middle-of-Row (MoR), or leaf-spine architectures. They support Layer 2 and Layer 3 switching, VXLAN overlays, MLAG, VRF, and dynamic routing protocols (OSPF, BGP, IS-IS), allowing segmentation, multi-tenancy, and high-performance east-west traffic. Traffic shaping, Quality of Service (QoS), and congestion management ensure that mission-critical workloads receive priority without impacting overall throughput. They also provide scalable uplink aggregation for higher bandwidth, and efficient multi-site connectivity for distributed data center environments.

Redundancy, Reliability & High Availability:

These switches feature dual hot-swappable AC or DC power supplies and N+1 redundant fans, ensuring uninterrupted operation even during component replacement. Non-disruptive software upgrades (ISSU), redundant backplane architecture, and system failover mechanisms allow maintenance without downtime. They also support VRRP, HSRP, and multi-chassis LAG, providing multiple redundancy paths for both enterprise and cloud environments, enhancing network resilience and service continuity. In addition, these switches offer automated fault detection and recovery mechanisms, and predictive monitoring to anticipate component failures before they impact performance.

Ultra-Low Latency & High Performance:

The S4128 series is optimized for sub-microsecond latency on 10GbE links, making it suitable for real-time applications, AI/ML workloads, financial trading platforms, high-frequency data analytics, and virtualized workloads. Features like cut-through forwarding, jumbo frame support, deep packet buffers, and hardware acceleration ensure minimal delay, high packet throughput, and consistent performance in high-density server environments. They also provide hardware-based flow control and priority queuing, and optimized handling of mixed east-west and north-south traffic, delivering consistent low-latency performance across the fabric.

Advanced Security & Network Protection:

Security is deeply integrated into these switches, offering MACsec (802.1AE) encryption, 802.1X authentication, RADIUS/TACACS+, and role-based access control (RBAC). They include DHCP Snooping, Dynamic ARP Inspection (DAI), BPDU Guard, Root Guard, port security, storm control, and DoS mitigation for robust threat protection. Secure management protocols (SSHv2, HTTPS, SNMPv3) and comprehensive ACLs allow safe operation across multi-tenant and hybrid networks. Additionally, the switches provide segmentation and isolation for critical workloads, and integration with centralized security policies and monitoring tools for continuous compliance.

Automation, Orchestration & Programmability:

The switches support Zero-Touch Provisioning (ZTP), Ansible, Puppet, Chef, Python scripting, and RESTful APIs, allowing automated deployments, updates, and policy enforcement. Event-driven automation, template-based provisioning, and SDN orchestration integration minimize manual interventions, ensuring consistent configuration, faster deployment, and operational efficiency. They also allow cross-site configuration replication and automated rollback in case of misconfiguration, reducing risk during large-scale deployments.

Monitoring, Telemetry & Analytics: 

The switches provide advanced telemetry, sFlow, NetFlow, SNMP, Syslog, and streaming analytics, enabling real-time traffic visibility, performance monitoring, and capacity planning. Integration with Dell CloudVision allows centralized management, predictive analytics, network-wide visibility, historical trend reporting, and automated alerting, helping IT teams proactively maintain uptime, optimize performance, and reduce troubleshooting time. They also offer customizable dashboards for operational metrics, and AI-assisted anomaly detection for early problem identification.

Flexible Deployment & Environmental Adaptability:

The S4128F-ON and S4128T-ON can be configured for front-to-back or back-to-front airflow, optimizing cooling efficiency in a variety of data center designs. The 1U compact form factor, hot-swappable fans, and modular PSU options make them ideal for edge, campus, or core deployments, while reducing space, power, and cooling requirements. In addition, they support high-efficiency power operation modes, and environmental monitoring for temperature, humidity, and airflow, ensuring reliability under varying data center conditions.

Future-Ready Networking & Scalability:

These switches are designed for next-generation network demands, supporting programmable, automated, and virtualized network architectures. They are capable of handling high-bandwidth cloud workloads, hybrid cloud integrations, AI/ML applications, and edge computing traffic. Support for emerging protocols, telemetry, and standards ensures long-term scalability, network agility, and investment protection. They also provide modular software feature expansion and hardware readiness for future networking innovations, guaranteeing longevity in evolving network environments.

Operational Efficiency & Cost Optimization:

By combining centralized management, automated provisioning, predictive analytics, and non-disruptive maintenance, these switches reduce operational overhead and simplify network operations. Enterprises gain faster deployment times, fewer errors, improved network uptime, and lower total cost of ownership (TCO). Additionally, they provide energy-efficient operation to minimize power costs, and streamlined maintenance workflows, enabling IT teams to focus on strategic initiatives rather than routine tasks.

Enhanced Enterprise Features:

Additional features include support for multicast routing, VXLAN bridging, dynamic link aggregation, hierarchical QoS, and flexible VLAN mapping, making the S4128 series suitable for multi-tenant data centers, service provider infrastructures, and converged enterprise networks. Advanced monitoring, logging, and automation reduce manual workload, ensuring efficient network operation and rapid problem resolution. They also offer multi-protocol label switching (MPLS) support and granular traffic engineering capabilities, enhancing performance for complex enterprise and cloud environments.

Deployment Versatility:

The S4128F-ON / S4128T-ON support varied deployment topologies, including leaf-spine fabrics, hybrid campus networks, and high-performance enterprise clusters. With both fiber and copper port options, they provide flexible uplinks and connections, enabling multi-protocol, multi-vendor, and high-availability deployments. Additionally, they support remote configuration and monitoring, and easy integration with existing network fabrics, reducing deployment time and operational complexity.

ORDERING INFORMATION:

WARRANTY & SUPPORT:

Manufacturers are responsible for warranties, which are based on the purchase date and validity. We make sure the products we sell are delivered on time and in their original condition at Grabnpay. Whether it's physical damage or operational issues, our team will help you find a solution. We help you install, configure, and manage your devices. We'll help you file a warranty claim and guide you every step of the way.

All listed prices reflect standard market rates. Final commercial terms, including volume-based discounts, will be provided based on purchase volume, MOQ, and other applicable criteria. For more information about switches & other accessories, contact our technical support team.