RFQ
01Part-number led inquiry path
MSN3420-CB2F can be used as the direct starting point for quotation, BOM sharing and availability discussion.
Ethernet switches• MSN3420-CB2F
NVIDIA Spectrum SN3420 MSN3420-CB2FC – 48-Port 25GbE & 12-Port 100GbE Top-of-Rack Switch with Cumulus Linux
High-performance 1U rack switch with 48x25GbE ports & 12x100GbE uplinks. Features 4.8Tb/s capacity, Cumulus Linux OS, and 425ns latency for data centers.
RFQ
Inquiry ready
Clear path for part number, quantity and BOM-led contact.
EN / AR
Bilingual buyer flow
Useful for procurement teams coordinating technical review across regions.
Datasheet available
The product datasheet can be downloaded directly from this page.
Fast technical snapshotDatasheet available
MSN3420-CB2F
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Selected specs
48x SFP28 (10/25GbE) + 12x QSFP28 (40/100GbE)
48 + up to 48 via breakout (total 96 logical 25GbE from QSFP28)
1x 100/1000 RJ45, 1x RJ45 serial, 1x USB
2x hot-swappable (1+1 redundant), AC 100-264V, 50-60Hz
5x hot-swappable (N+1 redundant), reversible airflow option
1U Rackmount, 1.72" x 16.84" x 17" (44x428x432mm)
Deployment fit
Connect 25GbE servers to 100GbE spine switches. Ideal for hyperconverged clusters, high-performance computing, and general cloud workloads.
Follow-up path
Quote / Compatibility / Availability
Prepared for part-number led and BOM-led requests
MSN3420-CB2F
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Product media
From product visual to RFQ context
When product photography is available it appears here for faster review, and a clean technical outline remains useful for early evaluation when imagery is limited.
01Product imagery when available
02Clear technical outline for fast review
03Built for specification review before inquiry
Overview
Product overview
The NVIDIA Spectrum SN3420 (model MSN3420-CB2FC ) is a high-performance 1U top-of-rack switch engineered for data centers evolving from 10G to 25G server access while maintaining 100GbE uplink readiness. Built on the second-generation Spectrum-2 ASIC, it offers 48 x SFP28 ports supporting 10/25GbE and 12 x QSFP28 ports supporting 40/100GbE. With cut-through switching, advanced telemetry (What Just Happened), and a fully shared packet buffer, the SN3420 ensures predictable low latency and no head-of-line blocking. The switch comes factory-preloaded with NVIDIA Cumulus Linux , enabling web-scale automation, Linux-native tooling, and robust Layer-2/Layer-3 routing. Whether you are building a leaf/spine fabric, hyperconverged infrastructure, or high-frequency trading environment, the MSN3420-CB2FC delivers performance, flexibility, and open programmability.
Key features
- 48x SFP28 (10/25GbE) + 12x QSFP28 (40/100GbE) – fully splittable up to 128x 10/25GbE ports.
- 425ns cut-through latency, line-rate switching across all ports, zero packet loss under full load.
- NVIDIA What Just Happened (WJH) with hardware-accelerated histograms, INT-ready, streaming telemetry and 512K on-chip flow counters.
- 42MB fully shared buffer, fair and high-bandwidth data path, prevents micro-burst congestion.
- Native Linux experience, automation with Ansible/Puppet, FRRouting, container support, and rich routing protocols.
- Single-pass VXLAN routing, IPv6 segment routing, 512K shared forwarding entries (ACL/LPM/MAC/ECMP/tunnels).
Typical applications
- Connect 25GbE servers to 100GbE spine switches. Ideal for hyperconverged clusters, high-performance computing, and general cloud workloads.
- Deploy as a leaf switch in a two-tier Clos fabric, delivering non-blocking performance and ECMP load balancing.
- Low latency and lossless RoCE support enable high-performance NVMe over Fabric storage backends.
- Large buffer and telemetry-driven congestion management accelerate Spark, Hadoop, and distributed machine learning frameworks.
Buying flow
How this product review turns into a real inquiry
This section gives buyers a practical handoff from technical review into quotation or compatibility follow-up.
01
Identify the exact target model
Start from MSN3420-CB2F or the product name to reduce ambiguity before quotation starts.
02
Add quantity or deployment context
Share quantity, destination or BOM context so the commercial follow-up is aligned with the project scope.
03
Move into availability and fit review
Use the page as the handoff point for stock discussion, compatibility checks and delivery planning.
Technical snapshot
- 48x SFP28 (10/25GbE) + 12x QSFP28 (40/100GbE)
- 48 + up to 48 via breakout (total 96 logical 25GbE from QSFP28)
- 1x 100/1000 RJ45, 1x RJ45 serial, 1x USB
- 2x hot-swappable (1+1 redundant), AC 100-264V, 50-60Hz
- 5x hot-swappable (N+1 redundant), reversible airflow option
- 1U Rackmount, 1.72" x 16.84" x 17" (44x428x432mm)
Trust signals
Why buyers use this page to review MSN3420-CB2F
The page is designed to reduce the distance between specification review and a real commercial inquiry.
Review
02Compatibility review before follow-up
The NVIDIA Spectrum SN3420 MSN3420-CB2FC – 48-Port 25GbE & 12-Port 100GbE Top-of-Rack Switch with Cumulus Linux page is positioned to support compatibility questions and project-fit review before commercial action is finalized.
Project
03Project and quantity alignment
This model can be framed against use cases such as Connect 25GbE servers to 100GbE spine switches. Ideal for hyperconverged clusters, high-performance computing, and general cloud workloads. together with quantity and rollout timing.
Language
04English and Arabic follow-up
The bilingual route supports regional buying teams that need technical review and RFQ handling in two languages.
FAQ
Frequently asked questions about MSN3420-CB2F
Short answers that give buyers clearer expectations before they move into the quote form.
Can I request a quote for MSN3420-CB2F directly from this page?01
Yes. This page is designed to move MSN3420-CB2F review directly into quotation, availability or BOM discussion.
Does MSN3420-CB2F support compatibility discussion before purchase?02
Yes. The page can be used to frame compatibility questions around Connect 25GbE servers to 100GbE spine switches. Ideal for hyperconverged clusters, high-performance computing, and general cloud workloads. before commercial follow-up.
Can MSN3420-CB2F be compared with nearby models in the same family?03
Yes. Related products within the same category give buyers an internal comparison path before they submit an inquiry.
Can I send quantity or a BOM list with the inquiry?04
Yes. The inquiry path is designed to accept part numbers, quantity, BOM context and availability requirements in one submission.
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MSN3420-CB2F
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