Dell S5248F-ON - 48 × 25GbE SFP28 / 6 × 100GbE QSFP28 L3 Open Networking Switch, 1U, Dual AC Power, Hot-Swap Fans

The Dell EMC S5248F-ON is a high-density, 1U rack-mountable top-of-rack open networking switch designed for modern data center environments. Featuring 48 × 25GbE/10GbE SFP28 access ports with flexible uplink options, it delivers ultra-low latency and line-rate performance for high-throughput, mission-critical workloads. The switch supports dual hot-swappable AC or DC power supplies, five variable-speed hot-swappable fans, and configurable airflow to align with data center cooling strategies. Fully Open Networking-ready via ONIE, the S5248F-ON allows installation of third-party network operating systems such as Dell SmartFabric OS10, SONiC, or Cumulus Linux, enabling advanced automation, network programmability, and SDN-ready deployments.

KEY FEATURES:

• Total Ports: 48 × 25GbE SFP28 access ports
  
• Uplink Options: Configurable for 40/100GbE QSFP+ or QSFP28
  
• Switching Capacity: 2.0 Tbps (4.0 Tbps full duplex)
  
• Forwarding Rate:  1.5 Bpps (3.0 Bpps full duplex)
  
• CPU: Multi-core Intel x86
  
• System Memory: 16GB
  
• Flash Storage: 64GB mSATA SSD
  
• Packet Buffer: 32 MB
  
• MAC Address Table: Up to 512K entries
  
• VLANs: Up to 4,094
  
• Latency: <600 ns
  
• Form Factor: 1RU fixed rack mount
  
• Airflow Options: Front-to-back or back-to-front
  
• Fans: 5 × hot-swappable, variable-speed with N+1 redundancy
  
• Power Supply: Dual hot-swappable AC/DC PSUs
  

TECHNICAL SPECIFICATION:

HARDWARE:

PERFORMANCE:

SECURITY:

MANAGEMENT:

PHYSICAL & ENVIRONMENTAL:

ADVANCED FEATURES:

High-Performance Switching Fabric:

The Dell EMC S5248F-ON is engineered with a high-density, non-blocking architecture that delivers up to 3.6 Tbps of switching capacity and a forwarding rate of 1.48 Bpps. This ensures line-rate, ultra-low latency performance across all 48 × SFP28 ports, making it ideal for high-throughput workloads such as virtualization, storage networks, HPC clusters, and cloud computing. Deep packet buffers, dynamic shared buffer architecture, and eight egress queues per port ensure consistent throughput and low latency under heavy multi-service traffic, enabling predictable performance in demanding data center and enterprise environments. Jumbo frame support up to 9,216 bytes ensures seamless handling of large data packets and storage traffic.

Open Networking & Programmability:

Built for the modern software-defined data center, the S5248F-ON supports ONIE (Open Network Install Environment), allowing zero-touch installation of third-party network operating systems such as Dell SmartFabric OS10, SONiC, Cumulus Linux, and IP Infusion OcNOS. This flexibility enables DevOps-style network-as-code operations, integration with CI/CD pipelines, and automation of provisioning, monitoring, and policy deployment. REST APIs, Python SDK, Ansible, Puppet, and Chef integration allow administrators to automate repetitive tasks, orchestrate multi-device configurations, and implement intelligent network workflows, reducing operational complexity and human error.

High Availability & Redundancy:

The switch features dual hot-swappable AC or DC power supplies, five hot-swappable, variable-speed fans with N+1 redundancy, and configurable airflow (front-to-back or back-to-front), ensuring maximum uptime in mission-critical environments. Hardware health monitoring, predictive failure alerts, and dual-image firmware management allow non-disruptive upgrades and proactive maintenance. These capabilities minimize downtime and ensure continuous operation for enterprise, cloud, and hyperscale data center deployments.

Flexible Port & Uplink Configuration:

With 48 × SFP28 access ports, the S5248F-ON provides high-density server connectivity, while QSFP+ and QSFP28 uplinks offer scalable aggregation and core connectivity. Multi-speed port support and breakout capabilities enable hybrid deployment scenarios, while multi-chassis link aggregation ensures seamless scaling across multiple switches. Advanced traffic balancing and per-port telemetry allow administrators to monitor utilization, detect anomalies, and optimize bandwidth allocation in real time, supporting predictable performance for latency-sensitive applications such as storage, AI workloads, and HPC.

Advanced Routing & Network Virtualization:

The S5248F-ON supports static routing, OSPF, BGP, VRF-lite, and advanced policy-based routing for large-scale network architectures. Overlay network support with VXLAN and NVGRE enables multi-tenant segmentation and east-west traffic optimization. Segment routing, route summarization, and multicast features (IGMP Snooping, PIM-SM, PIM-SSM) enhance performance in complex campus, data center, and cloud networks. The switch integrates seamlessly into software-defined overlays, allowing cloud-ready, multi-tenant, and hybrid deployments without sacrificing performance or reliability.

Traffic & Congestion Management:

Dynamic buffer allocation, deep packet buffers, Weighted Random Early Detection (WRED), Quality of Service (QoS) scheduling, Priority Flow Control (IEEE 802.1Qbb), and DCBX/ECN ensure efficient handling of high-volume traffic and congestion-sensitive workloads. The switch supports per-port rate limiting, traffic mirroring, and fine-grained congestion management, enabling deterministic performance for storage networks, HPC, and AI/ML workloads. These mechanisms provide lossless operation for latency-sensitive applications and maintain high service levels across east-west and north-south traffic flows.

Security & Compliance:

Security is comprehensive, including L2/L3/L4 ACLs, 802.1X, RADIUS, TACACS+, MAC-based port security, DHCP snooping, Dynamic ARP Inspection (DAI), IP Source Guard, private VLANs, VRF-lite segmentation, and control-plane policing. Hardware-based DoS protection and secure boot with image verification ensure operational integrity. Compliance with RoHS, WEEE, REACH, ENERGY STAR, and safety standards such as UL, CE, and CSA provides enterprise-grade reliability and environmental responsibility.

Monitoring, Telemetry & Analytics:

Real-time SNMP, sFlow, RMON, Syslog, and telemetry provide deep visibility into network health, port-level traffic, and environmental metrics. Integrated diagnostic tools, loopback testing, and predictive analytics enable proactive fault detection and troubleshooting. Telemetry data can be streamed to analytics and network monitoring platforms for historical analysis, capacity planning, and predictive maintenance. This ensures operational efficiency, rapid fault resolution, and optimized resource utilization across large-scale deployments.

Cloud & Data Center Integration:

The S5248F-ON supports integration with OpenStack, VMware NSX, Kubernetes CNI, and other cloud orchestration platforms. VXLAN/NVGRE overlays and multi-tenant network support enable agile, hybrid cloud deployments, connecting on-premises infrastructure with public cloud environments securely and efficiently. Its 1U high-density design is optimized for top-of-rack deployment, high-performance compute clusters, storage fabrics, and high-bandwidth server environments.

Firmware & Software Management:

Dual-image firmware support, secure boot, image verification, and automated rollback enable non-disruptive OS upgrades, minimizing downtime during maintenance. Firmware can be updated via USB, TFTP, FTP, SCP, or HTTP. Scheduled software updates and multi-device provisioning allow rapid deployment across large-scale data center networks, ensuring operational consistency and compliance with enterprise IT policies.

Scalability & Future-Ready Architecture:

Designed for evolving enterprise and cloud networks, the S5248F-ON accommodates future bandwidth requirements with scalable port density, high forwarding rates, and support for advanced L2/L3 features. Its programmable and SDN-ready architecture ensures seamless integration into large-scale top-of-rack deployments, multi-tenant fabrics, and hybrid cloud infrastructures.

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.