Mellanox Network Switch OEM 25GbE/100GbE Mellanox Open Source Ethernet Switch MSN3420-CB2F

NVIDIA Spectrum SN3000 Series Switch - MSN3420-CB2F

1. Product Overview

The MSN3420-CB2F is a high-performance, open Ethernet network switch from the NVIDIA Spectrum SN3000 series, designed for modern data center top-of-rack (ToR) and leaf-layer deployments. It features 48 ports of 10/25GbE SFP28 and 12 ports of up to 100GbE QSFP28, delivering a total throughput of 4.8 Tb/s. Powered by the Spectrum-2 ASIC, it ensures consistent low latency, advanced telemetry, and support for multiple open network operating systems, making it a versatile and future-proof solution for cloud, enterprise, and high-performance computing environments.

2. Key Characteristics

• 48 x SFP28 (10/25GbE) + 12 x QSFP28 (40/100GbE) ports
• Throughput: 4.8 Tb/s | Packet Rate: 3.58 Bpps
• Cut-through latency: 425 ns
• 42 MB fully shared packet buffer
• Support for Cumulus Linux, NVIDIA Onyx, and ONIE-compatible OS
• Hardware-accelerated telemetry (WJH, INT, streaming)
• Hot-swappable power supplies and fans with reversible airflow

3. Core Technologies

The SN3000 series leverages the NVIDIA Spectrum-2 ASIC, enabling advanced features such:

• VXLAN routing and bridging
• RoCE (RDMA over Converged Ethernet) for NVMe-oF and AI workloads
• IPv6 Segment Routing
• Cloud-scale NAT support
• Programmable pipeline with deep packet inspection (up to 512B)
• Hardware-based security with secured boot (on certain models)

4. Working Principle

The MSN3420-CB2F operates as a high-speed leaf or ToR network switch, utilizing the Spectrum-2 ASIC to process packets in cut-through mode for minimal latency. It supports layer 2 and layer 3 forwarding, VXLAN overlay networks, and advanced quality of service (QoS) mechanisms. The fully shared packet buffer ensures fair bandwidth allocation and prevents congestion, making it ideal for bursty and high-throughput applications like AI, machine learning, and storage networking.

5. Applications & Usage

• Data Center Leaf/ToR Switching
• Cloud and Hyper-Converged Infrastructure (HCI)
• High-Performance Computing (HPC) and AI Clusters
• Storage Fabrics (NVMe-oF, iSCSI)
• Enterprise Campus and Core Networking
• Media and Entertainment Workflows

6. Technical Specifications

7. Advantages & Selling Points

• Superior performance with Spectrum-2 ASIC and low latency design
• Open networking support avoids vendor lock-in
• Rich telemetry for real-time monitoring and troubleshooting
• High port density with flexible speed support from 1G to 100G
• Robust hardware design with redundant power and cooling
• Ideal for RoCE and GPUDirect-driven applications

8. Service & Support

All NVIDIA SN3000 series switches come with a 1-year limited hardware warranty. Optional service upgrades include next-business-day advance replacement and 4-hour technical dispatch. NVIDIA also offers professional services for installation, configuration, and remote monitoring. This particular network switch is backed by a global support network and comprehensive online resources.

9. Frequently Asked Questions (FAQ)

Q: What operating systems are supported on the MSN3420-CB2F?
A: It supports NVIDIA Onyx (pre-installed), Cumulus Linux, and any ONIE-compatible NOS.

Q: Can the QSFP28 ports be split into lower-speed connections?
A: Yes, each 100GbE QSFP28 port can be split into 4x 25GbE or 2x 50GbE connections using breakout cables.

Q: Is this switch suitable for NVMe over Fabrics (NVMe-oF)?
A: Yes, it supports RoCEv2 for low-latency NVMe-oF deployments.

Q: What is the power consumption?
A: Typical power consumption is under 300W; exact values depend on configuration and utilization.

10. Precautions

• Ensure compatible transceivers and cables are used as per NVIDIA compatibility matrix.
• Operating temperature: 0°C to 40°C; humidity: 5% to 85% non-condensing.
• Complies with safety standards: CE, FCC, RoHS, and others.
• Use ESD protection during installation and handling.
• Verify airflow direction (P2C or C2P) matches data center cooling design.

11. Company Introduction

With over a decade of industry experience, We work with qualified manufacturing and supply partners supported by a strong technical team. We have built a vast customer base and extensive expertise, enabling us to offer competitive pricing and high-quality service. We are a network infrastructure supplier for leading brands including Mellanox (NVIDIA), Ruckus, Aruba, and Extreme. Our product portfolio includes condition confirmed in the quotation network switches, network adapters, wireless access points, wireless controllers, and cables.

We maintain an sourcing capacity is confirmed per project, ensuring ample selection and bulk supply capabilities. Upon confirmed delivery, we provide project support and technical support. Our professional sales and engineering teams have earned a strong reputation in global markets.