Dell EMC FFR83 is a Dell part number for the Dell EMC Networking S4128F-ON, a high-performance 10GbE data center switch designed for modern leaf and top‑of‑rack deployments. The S4128F-ON provides 28 fixed 1/10GbE SFP+ ports for high-density server connectivity, complemented by 2 QSFP28 40/100GbE uplink ports to aggregate traffic into spine or core layers with ample headroom. Built on the S4100-ON open networking platform, it supports ONIE, enabling deployment of Dell EMC OS10 or third‑party network operating systems for flexible fabric architectures. Low latency, non‑blocking throughput, and advanced Layer 2 and Layer 3 features support demanding east‑west traffic patterns in virtualized and hyper‑converged environments. This compact 1U device is ideal for enterprise and service provider data centers requiring efficient power usage, front‑to‑back or back‑to‑front airflow options, and automation‑ready operations. With open standards-based protocols and programmability, the S4128F-ON enables scalable VXLAN, MLAG, and BGP EVPN fabrics while simplifying migration from legacy architectures.
28x 1/10GbE SFP+ ports for dense server access.
100GbE QSFP28 uplinks for spine connectivity.
Open networking with ONIE NOS support.
Compact 1U form factor for ToR designs.
Non-blocking low-latency switching fabric.
Layer 2 and Layer 3 data center features.
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The Dell EMC FFR83 (S4128F-ON) integrates as a 10GbE leaf or top-of-rack switch with Dell EMC PowerEdge servers, Z-Series or S-Series spine switches, and ONIE-based network operating systems, provided compatible SFP+/QSFP28 optics and cabling are used.
Dell EMC PowerEdge
Model: R-Series and MX-Series servers
Form factor: Rack and modular
Generation: 13th Gen and later
Connects via 1/10GbE SFP+ NICs for top-of-rack leaf deployments in Dell EMC-based data centers.
Dell EMC Networking
Model: Z-Series and S-Series spine switches
Form factor: Rack-mount
Generation: Data center spine platforms
Interoperates over 40/100GbE QSFP28 uplinks in leaf-spine fabrics using standards-based protocols.
Best for
Data Center Leaf Switching
Use as a high-density 10GbE leaf switch connecting server racks to 40/100GbE spines in modern Clos data center fabrics.
Top-of-Rack Switching
Deploy at the top of rack to aggregate 10GbE server links with low-latency, non-blocking connectivity and 100GbE uplinks.
Cloud and Virtualization Fabrics
Support VXLAN and overlay networks in private or hybrid cloud environments requiring high east-west traffic performance.
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Provide predictable 10GbE connectivity and L2/L3 services for hyper-converged and SDS clusters requiring consistent bandwidth.
Service Provider Edge
Utilize as a flexible, open networking platform at the provider edge where programmable fabrics and high-density 10GbE are needed.
Lab and Test Environments
Serve as a versatile, OS-agnostic switch platform in labs requiring frequent reconfiguration and multiple NOS options.
Frequently asked questions
What switch model does the Dell FFR83 part number correspond to?
Dell part number FFR83 corresponds to the Dell EMC Networking S4128F-ON switch. This is a 1U fixed-configuration data center switch that provides 28 SFP+ ports for 1/10GbE access and QSFP28 uplink ports for 40/100GbE aggregation, forming part of Dell’s S4100-ON open networking series.
How many 10GbE and uplink ports does the S4128F-ON provide?
The Dell EMC S4128F-ON provides 28 primary 1/10GbE SFP+ ports for server or downstream switch connections. It also offers QSFP28 uplink capability for 40/100GbE connectivity, enabling high-bandwidth links to spine or core switches while maintaining a compact 1U footprint suitable for dense racks.
What operating systems are supported on the S4128F-ON?
As an S4100-ON open networking switch, the S4128F-ON supports ONIE, allowing installation of Dell EMC Networking OS10 Enterprise Edition and approved third‑party network operating systems. This flexibility lets operators standardize on their preferred NOS across fabrics, integrate automation tools, and adopt open networking practices.
Is the S4128F-ON suitable for leaf-spine data center architectures?
Yes, the S4128F-ON is purpose-built for leaf roles in leaf‑spine architectures. Its 28x 10GbE SFP+ access ports efficiently connect servers, while its high-speed QSFP28 uplinks provide ample bandwidth to spine switches. Support for modern L2/L3 features and VXLAN enables scalable, low-latency fabrics.
What deployment environments benefit most from the S4128F-ON?
The S4128F-ON is ideal for enterprise and service provider data centers, private and hybrid cloud platforms, virtualization clusters, and hyper-converged infrastructures. Its combination of dense 10GbE access, open networking OS options, and advanced routing and switching features supports demanding, highly virtualized workloads.
Does the S4128F-ON support automation and programmable networking?
Yes, when running OS10 or supported open NOS options, the S4128F-ON supports automation frameworks, standard APIs, and model-driven management. This enables integration with orchestrators and configuration management tools, reducing manual tasks, improving consistency, and supporting intent-based and DevOps-style network operations.
Can the S4128F-ON be used in mixed-speed environments?
The S4128F-ON’s SFP+ ports support 1GbE and 10GbE optics, making it suitable for mixed-speed deployments where legacy 1GbE servers coexist with newer 10GbE hosts. This helps simplify migration to higher speeds without requiring an immediate, full-rack upgrade, while the QSFP28 uplinks provide high-speed aggregation.
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