NVIDIA Mellanox MSN3700-VS2FC Spectrum-2 200GbE Open Ethernet Switch, 32x QSFP56, 1U, Cumulus Linux: This is a 1U fixed-configuration top-of-rack/aggregation switch built on the NVIDIA Spectrum-2 ASIC, exposing 32 ports of QSFP56 200GbE. The unit ships preloaded with NVIDIA Cumulus Linux for L2/L3 open networking. Airflow direction on this SKU is P2C (Power-to-Connector / front-to-back). This is a refurbished unit.
Engineering Context
The Spectrum-2 ASIC delivers 6.4Tb/s aggregate switching with cut-through forwarding. Each QSFP56 port supports native 200GbE (4x50G PAM4) and breakout to 2x100GbE or 4x50GbE. The switch supports SyncE and PPS for precision timing, secure boot for firmware integrity, dual hot-swappable AC PSUs, and an x86-based control plane. Cumulus Linux exposes the data plane via standard Linux primitives plus NVUE.
Deployment & Use Cases
Spine-leaf 200GbE fabrics in hyperscale and AI/ML training pods. EVPN-VXLAN overlay deployments built on Cumulus Linux. ToR aggregation for racks of 100GbE servers using 4x50G or 2x100G breakouts. Telecom edge installations requiring SyncE precision timing. Open networking environments standardizing on Cumulus or SONiC stacks.
Technical Specifications
- OEM: NVIDIA Mellanox
- Part Number: MSN3700-VS2FC
- NVIDIA OPN: 920-9N201-00FA-0C0
- ASIC: NVIDIA Spectrum-2
- Switching Capacity: 6.4Tb/s
- Ports: 32x QSFP56 (200GbE native)
- Breakout: 2x100GbE or 4x50GbE per port supported
- Form Factor: 1U Rackmount
- Operating System: NVIDIA Cumulus Linux preloaded
- Airflow: P2C (Power-to-Connector / front-to-back)
- Power: Dual hot-swappable AC PSUs (1+1 redundancy)
- Timing & Security: SyncE, PPS, Secure Boot
- Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Native 200GbE Ethernet only — this is the Spectrum-2 Ethernet variant, not an InfiniBand Quantum switch. Interoperates with NVIDIA QSFP56 transceivers and DAC/AOC cables (e.g., MMA1T00-VS, MFS1S00-V series), and with QSFP28 100GbE optics in 2x100G breakout mode. Airflow is fixed P2C; for reverse airflow, use the MSN3700-VS2RC variant. Cumulus Linux license assignment must be transferred or activated under the buyer's account; contact NVIDIA licensing for re-registration. Not field-upgradeable to higher port counts; the chassis is fixed 32-port.
Frequently Asked Questions (FAQ)
Q. What is the MSN3700-VS2FC?
The MSN3700-VS2FC is a Spectrum-2 based SN3700 Open Ethernet switch with 32 QSFP56 ports at up to 200GbE, Cumulus Linux pre-loaded, 1U.
Q. Can Cumulus Linux be replaced with a different NOS?
Yes, since the platform is ONIE-based, but reinstalling requires a supported ONIE image.
Q. Will T.E.S IT-SOLUTIONS confirm the configuration of MSN3700-VS2FC before shipping?
Yes. T.E.S IT-SOLUTIONS (tes-itsolutions.com) inspects each unit and verifies vendor markings before dispatch from EU stock.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS bench-tests every Spectrum-2 switch for ASIC error counters, port lane integrity, PSU redundancy, and firmware version before shipment. Refurbished units ship with 1–3 day handling, global delivery, and consultation on Cumulus Linux migration and 200GbE fabric design.