MSN3700-VS2FO - 32x200GbE Spectrum-2 1U Switch | NVIDIA
MPN: MSN3700-VS2FO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18900 | $18,900.00 |
| 2 | $18400 | $36,800.00 |
| 5 | $17900 | $89,500.00 |
| 10 | $17500 | $175,000.00 |
| 25 | $16900 | $422,500.00 |
MSN3700-VS2FO Overview
A fixed-configuration data center switch is a complete networking system that aggregates and routes high-speed Ethernet traffic between server racks and the network spine. Within the hierarchy of data center fabric equipment, it occupies the leaf/spine/super-spine tier above top-of-rack (ToR) access switches, providing the high-port-count, low-latency backbone that modern cloud and AI clusters require.
Key features include 32 QSFP56 ports supporting speeds from 10GbE to 200GbE per port, the 2nd-generation NVIDIA Spectrum-2 ASIC purpose-built for leaf/spine/super-spine topologies, and an ONIE boot loader enabling installation of open network operating systems such as Cumulus Linux. The unit ships with two hot-swappable AC power supplies, an x86 management CPU, standard-depth chassis, power-to-connector (P2C) airflow, and a rail kit.
Technically, the Spectrum-2 silicon provides a shared-memory, cut-through forwarding architecture that achieves consistent sub-microsecond latency regardless of port mix, making it well suited to east-west traffic patterns in machine learning and high-performance computing fabrics. Each port can operate independently at 10/25/40/50/100/200GbE, allowing a single chassis to serve mixed-speed uplinks and downlinks without oversubscription hardware changes.
Typical applications include 200G spine/super-spine switching in cloud data centers, AI training cluster back-end fabrics, and high-density storage area network aggregation. The 12.8 Tb/s non-blocking capacity supports full-rack GPU node connectivity at line rate.
Design consideration: airflow direction is fixed at order time (P2C on this SKU); verify rack cooling direction before deployment, and confirm the 0 to 40 C operating envelope against your facility conditions.
This page synthesizes distributor availability, same-platform drop-in variant comparisons, and practical deployment notes not found in the manufacturer datasheet.
Drop-in alternatives for MSN3700-VS2FO — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MSN3700-VS2FO (same form factor and footprint) — differing in Airflow, Power Supplies, Form Factor, ASIC, Latency.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MSN3700-VS2F
✅ Drop-In📋 Reference alternative (not in catalog)
MSN3700-VS2FC
✅ Drop-In✓ In Stock
$9100 / Unit
View Datasheet →MSN3700-VS2RC
✅ Drop-In✓ In Stock
$26670 / Unit
View Datasheet →MSN3700-CS2FO
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →SSE-SN3700-VS2RC
✅ Drop-In📋 Reference alternative (not in catalog)
SSE-SN3700-VS2FC
✅ Drop-In📋 Reference alternative (not in catalog)
MSN3700-VS2FO Specifications (manufacturer-published)
| Switching Capacity | 12.8 Tb/s |
| Forwarding Rate | 8.33 Bpps |
| Latency | 425 ns |
| Port Configuration | 32 x QSFP56 |
| Port Speeds Supported | 10GbE to 200GbE |
| Switch ASIC | NVIDIA Spectrum-2 (2nd generation) |
| Form Factor | 1U rack-mount |
| CPU | x86 management CPU |
| Network OS Support | ONIE boot loader (Cumulus Linux compatible) |
| Power Supplies | 2 x AC (hot-swappable) |
| Airflow | P2C (Power-to-Connector) / back-to-front |
| Chassis Depth | Standard depth |
| Operating Temperature | 0 C to 40 C |
| Non-Operational Temperature | -40 C to 70 C |
| Included Accessories | Rail kit |
| NVIDIA SKU | 920-9N201-00FA-0N0 |
| Series | SN3000 (SN3700) |
MSN3700-VS2FO Interfaces & Connectors
No manufacturer-published interface list is available for MSN3700-VS2FO. Refer to the manufacturer documentation for connector and header details.
Refer to the manufacturer documentation for the full expansion header pinout and connector pin numbering.
Power & Thermal Characteristics
| Operating Temperature | 0 C to 40 C |
Power input and thermal parameters for MSN3700-VS2FO as published by the manufacturer.
Typical Applications
MSN3700-VS2FO is suitable for 6 applications: 200G Data Center Spine Switching, AI Training Cluster Back-End Fabric, Open Networking / Whitebox NOS Deployment, Storage Area Network Aggregation, Enterprise Campus Core Uplink, HPC Interconnect Fabric.
200G Data Center Spine Switching
The MSN3700-VS2FO serves as a spine or super-spine switch in cloud and enterprise data centers, aggregating leaf switches over 32 x QSFP56 ports at up to 200GbE each. Its 12.8 Tb/s non-blocking capacity and 425 ns cut-through latency on the Spectrum-2 ASIC ensure predictable performance under full east-west load, a key requirement for spine-layer designs where oversubscription and jitter directly affect application SLAs. Each port supports 10GbE to 200GbE, so a single chassis can mix 100G leaf uplinks with 200G super-spine uplinks without additional hardware. NVIDIA's SN3000 series was purpose-built for leaf/spine/super-spine topologies, making rack-scale full-connectivity designs straightforward.
Recommended
AI Training Cluster Back-End Fabric
For distributed AI training, the MSN3700-VS2FO provides the deterministic low-latency back-end network that GPU clusters demand. The 425 ns port latency and 8.33 Bpps forwarding rate minimize inter-node communication stalls during all-reduce operations, while the 12.8 Tb/s fabric allows full-line-rate connectivity of accelerator nodes. 200GbE QSFP56 ports can also break out to 4x50G or 4x100G to match NIC configurations, giving flexibility between single-host 200G links and multi-host breakout cabling. Because NVIDIA builds both the SN3000 switch series and the GPU ecosystem, interoperability with NVIDIA networking software stacks is first-party supported, simplifying fabric bring-up and telemetry integration in large training environments.
Recommended
Open Networking / Whitebox NOS Deployment
The MSN3700-VS2FO boots via ONIE (Open Network Install Environment), enabling deployment of open network operating systems such as Cumulus Linux on standard x86 management hardware. Distributor listings explicitly describe this SKU as a Cumulus Linux capable Open Ethernet switch. This decouples hardware selection from NOS licensing, letting network teams standardize automation tooling, telemetry pipelines, and configuration management across mixed vendor fleets. The x86 CPU runs the host OS and monitoring agents natively, and the Spectrum-2 ASIC is fully programmable for modern telemetry and feature deployment, making the platform a strong fit for disaggregated data center networking strategies.
Recommended
Storage Area Network Aggregation
High-density NVMe-oF and iSCSI fabrics benefit from the MSN3700-VS2FO's combination of 32 x 200GbE ports, 425 ns latency, and cut-through forwarding. Storage traffic is bursty and latency-sensitive; the Spectrum-2 shared-memory architecture sustains line-rate forwarding with 8.33 Bpps capacity even with many-to-many flows, preventing head-of-line blocking during backup windows or checkpoint storms. RDMA over Converged Ethernet deployments at 100G/200G can terminate directly on QSFP56 ports, and per-port speed flexibility (10GbE to 200GbE) allows legacy 25G/40G storage arrays to attach to the same chassis as modern 200G flash tiers, consolidating SAN aggregation onto one 1U platform.
Recommended
Enterprise Campus Core Uplink
Large enterprise campuses terminating 100G/200G fiber plant can use the MSN3700-VS2FO as a compact core switch. Its 1U standard-depth chassis with included rail kit fits shallow cabinets common in campus MDF spaces, and dual hot-swappable AC power supplies support redundant power feeds. The 12.8 Tb/s capacity easily aggregates dozens of 100G building distribution uplinks, while the 0 to 40 C operating range covers conditioned telecom rooms. ONIE-based NOS support allows campus teams to run the same operating system image as their data center fabric, unifying operations, reducing training overhead, and enabling end-to-end telemetry across the enterprise network.
Recommended
HPC Interconnect Fabric
High-performance computing sites running MPI-based simulation workloads deploy the MSN3700-VS2FO in leaf/spine Ethernet fabrics where 425 ns switch latency preserves scaling efficiency across thousands of cores. The Spectrum-2 ASIC's low and consistent port-to-port latency avoids the jitter that degrades synchronized parallel jobs, and the 12.8 Tb/s non-blocking fabric supports full-bisection bandwidth designs. Ports operate from 10GbE to 200GbE, so management, out-of-band, and compute networks can share a chassis with VLAN segmentation. Standard x86 management with ONIE allows HPC-standard open NOS images, and dual AC PSUs fit facility power conventions in academic and national-lab data centers.
Recommended
Recommended Products Summary
Engineering reference data for MSN3700-VS2FO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MSN3700-VS2F | MSN3700-VS2FC | MSN3700-VS2RC | SSE-SN3700-VS2RC |
|---|---|---|---|---|---|
| Package (Form Factor) | 1U, 32 x QSFP56, standard depth | 1U, 32 x QSFP56 - same chassis | 1U, 32 x QSFP56 - same chassis | 1U, 32 x QSFP56 - same chassis | 1U, 32 x QSFP56 - same class (EOL) |
| Brand | NVIDIA (Mellanox) | NVIDIA (Mellanox) | NVIDIA (Mellanox) | NVIDIA (Mellanox) | Supermicro |
| Switch ASIC | NVIDIA Spectrum-2 | NVIDIA Spectrum-2 | NVIDIA Spectrum-2 | NVIDIA Spectrum-2 | NVIDIA Spectrum-2 |
| Switching Capacity | 12.8 Tb/s | 12.8 Tb/s | 12.8 Tb/s | 12.8 Tb/s | 12.8 Tb/s |
| Forwarding Rate | 8.33 Bpps | 8.33 Bpps | 8.33 Bpps | 8.33 Bpps | 12.8 Tb/s throughput class |
| Airflow | P2C (back-to-front) | Varies by SKU suffix | Varies by SKU suffix | Varies by SKU suffix | P2C per SKU code |
| Power Supplies | 2 x AC | 2 x PSU (per suffix code) | 2 x PSU (per suffix code) | 2 x PSU (per suffix code) | 2 x PSU (per suffix code) |
| Lifecycle Status | Active | Active | Active | Active | EOL / Discontinued |
Key Differentiators
- Consistent sub-microsecond latency (vs SSE-SN3700-VS2RC)
- Flexible per-port speed from 10GbE to 200GbE (vs MSN3700-VS2RC)
- First-party NVIDIA ecosystem integration (vs SSE-SN3700-VS2FC)
Design Notes
Airflow direction is fixed at order time and cannot be changed in the field. The MSN3700-VS2FO uses P2C (power-to-connector, back-to-front) airflow; NVIDIA's ordering information documentation explicitly warns to pay attention to airflow direction when ordering. Deploying a P2C chassis in a front-to-back cooled rack causes hot-air recirculation and premature thermal throttling. Verify rack cooling direction and PSU type (AC vs DC) before finalizing the OPN suffix.
The chassis ships with two AC power supplies for redundancy; both must be fed from independent power sources (A/B feeds) to survive a UPS or PDU failure. Estimated: at a 12.8 Tb/s fully-loaded fabric, power draw reaches the class-typical several-hundred-watt range, so confirm PDU circuit budget and breaker sizing per rack before populating all 32 QSFP56 ports, since optic power adds substantially at 200G. Consult the SN3000 hardware user manual for exact per-SKU power figures.
QSFP56 200G links are sensitive to cable quality and length. Use NVIDIA-qualified DAC/AOC/optic modules and observe maximum reach per cable type; invalid optics can fail to link or run at degraded speeds. Because each port supports 10GbE to 200GbE, plan breakout cabling (e.g., 1x200G to 4x50G) consistently between leaf and spine tiers and document the port-speed map, since mixed-speed operation is per-port and misconfiguration silently reduces uplink bandwidth.
Compliance Information
Compliance declarations for complete switch systems are provided by NVIDIA on request per product family; not published in the retrieved web data.
