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NVIDIA MSN3420-CB2FC Mellanox Spectrum-2 Based 25GbE/100GbE 1U Open Ethernet Switch with Cumulus Linux, 48 SFP28 Ports and 12 QSFP28 Ports, 2 Power Supplies (AC), Standard Depth, P2C Airflow, Rail Kit
P/N: MSN3420-CB2FC
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Questions
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Product Highlights

48x25GbE SFP28 + 12x100GbE QSFP28 Ports for Hybrid Connectivity
4.8 Tbps Throughput with Spectrum-2 ASIC for Data Center Scalability
Mellanox Onyx OS with ONIE Support for Multi-OS Flexibility
RoCE & In-Band Telemetry Enable High-Performance Compute & AI Workloads
NVIDIA MSN3420-CB2FC Mellanox Spectrum-2 Based 25GbE/100GbE 1U Open Ethernet Switch with Cumulus Linux, 48 SFP28 Ports and 12 QSFP28 Ports, 2 Power Supplies (AC), Standard Depth, P2C Airflow, Rail Kit
The SN3000 series switches are the 3rd generation of NVIDIA® Mellanox® Spectrum® switches, purpose-built for leaf/spine/super-spine datacenter applications. Allowing maximum flexibility, SN3000 series provides port speeds spanning from 1GbE to 400GbE, and a port density that enables full rack connectivity to any server at any speed. In addition,the uplink ports allow a variety of blocking ratios to suit any application requirement. SN3000 series platforms are based on the high-performance Mellanox Spectrum-2 ASIC with bidirectional switching capacity of 12.8Tbps. SN3000 platforms are available in a range of configurations, each delivering high performance combined with feature-rich layer 2 and layer 3 forwarding, ideally suited for both top-of-rack leaf and fixed configuration spines. The Mellanox SN3000 series provides full wire speed, cut through-mode latency, on-chip fully-shared 42MB packet buffering, and flexible port use in addition to advanced capabilities. Combining a wide range of innovations in the area of programmability, telemetry, and tunneling with industry leading performance, Mellanox SN3000 series is capable of addressing today’s data center’s complex networking requirements.
Specifications
Manufacturer
NVIDIA(Mellanox)
Software
Cumulus
Ports
48*SFP28,12*QSFP28
Data Rate
10/25/40/50/100GbE
Switch Series
NVIDIA Spectrum-2
Switching Capacity
4.8Tb/s
Latency
300ns
System Memory
8GB
Storage Memory
30GB
Airflow
Back-to-Front (P2C)
Input Voltage
100-127VAC 50/60Hz 6A, 200-240VAC 50/60Hz 3A
Operating Temperature
0 to 40°C (32 to 104℉)
Storage Temperature
-40 to 70°C (-40 to 158℉)
Dimensions (H×W×D)
44×438×464.6mm
Certification
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Questions & Answers
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All (2) Management (1)Compatibility (1)
Q:

Are NVIDIA Ethernet switches compatible with third-party NOS?

by I***m on 2025-07-21 16:41:36

A:

Yes. Many switches support SONiC, Cumulus Linux, and can be integrated into open network environments.

by CPLIGHT on 2025-07-21 16:55:17

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Q:

Can these switches be used in both data centers and edge deployments?

by 2***m on 2025-07-21 15:44:40

A:

Absolutely. NVIDIA offers compact, high-performance models suitable for both core and edge applications.

by Helpful on 2025-07-21 16:55:58

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Customer Reviews
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All (3) Performance (1)Ease of Use (1)Value (1)
i
i***m
2025-07-09 14:54:30
Confirmed Purchase
5.0

Our spine-leaf network using NVIDIA Spectrum switches now handles east-west traffic with minimal latency and zero packet loss under peak loads.

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o
o***m
2025-05-26 06:54:14
Confirmed Purchase
5.0

Considering the rich feature set and the performance we’re getting, the cost per port is very competitive compared to other Tier 1 brands.

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7
7***m
2025-04-29 02:55:39
Confirmed Purchase
5.0

With support for VXLAN, EVPN, and RDMA over Converged Ethernet (RoCE), the switches fit perfectly into our next-gen data center architecture.

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