Description
The NVIDIA MSN3420-CB2FC is a 1U top-of-rack Open Ethernet switch built on the Spectrum-2 ASIC, with NVIDIA Cumulus Linux pre-installed. It has 48 SFP28 ports for 10/25GbE and 12 QSFP28 ports for up to 100GbE uplinks. This makes it a cost-effective way to move host connectivity from 10G to 25G while using QSFP28 for leaf-spine designs. It handles up to 3.58 billion packets per second with 425ns latency and a fully shared 42MB packet buffer.
Spectrum-2 provides What Just Happened (WJH) telemetry, hardware-accelerated histograms, INT-ready hardware, and streaming telemetry for deep network visibility. It also supports RoCE, single-pass VXLAN routing, IPv6 segment routing, cloud-scale NAT, and a programmable pipeline with deep packet inspection up to 512B. This model ships with a dual-core x86 CPU, two 1+1 redundant hot-swappable AC power supplies, N+1 redundant hot-swappable fans, P2C airflow, and a rail kit.
Technical Specifications:
| Specification | Details |
|---|---|
| Brand | NVIDIA |
| MPN | MSN3420-CB2FC |
| Product Type | 1U Open Ethernet Switch |
| ASIC | NVIDIA Spectrum-2 |
| Operating System | NVIDIA Cumulus Linux (pre-installed) |
| Ports | 48 x SFP28 (10/25GbE) + 12 x QSFP28 (up to 100GbE) |
| Max 100GbE Ports | 12 |
| Max 50GbE Ports | 24 |
| Max 40GbE Ports | 12 |
| Max 25GbE / 10GbE / 1GbE Ports | 48 + 48 |
| Packet Rate | 3.58Bpps |
| Latency | 425ns |
| Packet Buffer | 42MB fully shared |
| CPU | Dual-core x86 |
| System Memory | 8GB |
| SSD | 32GB |
| Management Ports | 1 x 100/1000Mb/s, 1 x RJ45 serial, 1 x USB |
| Key Features | WJH telemetry, RoCE, VXLAN routing, IPv6 segment routing, NAT, MLAG, 64-way ECMP, 512K shared forwarding entries |
| Power Supplies | 2 x AC, 1+1 redundant, hot-swappable |
| Input | 100–264VAC, 50–60Hz, 2.9–4.5A |
| Fans | 5, N+1 redundant, hot-swappable |
| Airflow | P2C (connector-side outlet) |
| Dimensions (H x W x D) | 1.72 x 16.84 x 17 in (44 x 428 x 432mm) |
| Weight | 8.5kg (18.73lb) |
| Included | Rail kit |
| Operating Temperature | 0°C to 40°C |
| Non-Operating Temperature | -40°C to 70°C |
| Relative Humidity | 5% to 85% |
| Operating Altitude | 0–3050m |
| Safety | CB, CE, cTUVus, CU |
| EMC | CE, ICES, FCC, RCM, VCCI |
| Compliance | RoHS |
| Warranty | 1-year limited hardware return-and-repair |
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Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
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