Identity & Definition
This 400GbE open Ethernet switch is the NVIDIA Mellanox MSN4700-WS2FC Spectrum-3 400GbE 1U Open Ethernet Switch (920-9N301-00FB-0C0), a refurbished 1U rackmount data center switching platform sold by T.E.S IT-SOLUTIONS. The MSN4700-WS2FC is a 32-port QSFP-DD 400GbE spine switch powered by the NVIDIA Spectrum-3 ASIC, shipping with Cumulus Linux NOS pre-installed and P2C (Power-to-Connector) airflow. This is an Ethernet-only platform — it does NOT support InfiniBand. This is the Cumulus/P2C variant; for Cumulus/C2P see WS2RC, for Onyx/C2P see WS2R, for ONIE/P2C see WS2FO, for ONIE/C2P see WS2RO. Condition: Refurbished — tested and verified by T.E.S IT-SOLUTIONS.
Engineering Context
The MSN4700-WS2FC is hardware-identical to all MSN4700 variants: 32x QSFP-DD ports at 400GbE each, delivering 12.8Tb/s aggregate switching capacity in a 1U form factor. The Spectrum-3 ASIC provides deterministic sub-microsecond latency, up to 64MB shared packet buffer, What Just Happened (WJH) in-band network telemetry, and adaptive routing for ECMP load balancing. Per-port breakout supports 2x200G, 4x100G, 4x50G, or 8x25G configurations. Cumulus Linux provides a native Linux networking experience with full L2/L3, VXLAN, BGP, NCLU/NVUE CLI, apt-get package management, and Ansible/Puppet integration. The P2C airflow direction draws air from the power supply side and exhausts through the connector side. Power is supplied via dual hot-swap redundant AC PSUs.
Deployment & Use Cases
The MSN4700-WS2FC serves as a spine or aggregation switch in enterprise datacenter fabrics requiring Cumulus Linux automation with BGP/VXLAN overlay and P2C airflow. It is deployed as the backbone for AI/ML GPU clusters requiring 400GbE with native Linux NOS management. Cloud-native environments using Ansible/Puppet for network automation with back-to-front cooling requirements use this variant. The P2C airflow direction is designed for environments where cool air enters from the power supply (rear) side of the rack.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number (MPN): MSN4700-WS2FC
NVIDIA P/N: 920-9N301-00FB-0C0
ASIC: NVIDIA Spectrum-3
Ports: 32x QSFP-DD (400GbE per port)
Aggregate Bandwidth: 12.8Tb/s
Breakout: 2x200G, 4x100G, 4x50G, 8x25G per port
Latency: Sub-microsecond deterministic
Packet Buffer: 64MB shared
NOS: Cumulus Linux (pre-installed)
Form Factor: 1U rackmount
Airflow: P2C (Power to Connector / back-to-front)
Power: Dual hot-swap redundant AC PSUs
Telemetry: What Just Happened (WJH)
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
The MSN4700-WS2FC is Ethernet only — the Spectrum-3 ASIC does NOT support InfiniBand. Cumulus Linux is pre-installed and requires an NVIDIA Cumulus license for production use. For SONiC, purchase WS2FO or WS2RO (ONIE variants). For Onyx, purchase WS2R. The P2C airflow direction is the OPPOSITE of the WS2RC/WS2R/WS2RO (C2P) — mixing airflow directions in the same rack causes thermal hotspots. QSFP-DD ports are backward-compatible with QSFP28 and QSFP56 optics but full 400GbE requires QSFP-DD optics or DACs. Maximum per-port speed is 400GbE — for 800GbE, the Spectrum-4 SN5600 platform is required.
Why Choose T.E.S IT-SOLUTIONS
Every NVIDIA MSN4700-WS2FC sold by T.E.S IT-SOLUTIONS undergoes full port testing, firmware verification, and thermal validation to confirm zero-packet-drop performance. T.E.S IT-SOLUTIONS provides technical consultation for 400GbE fabric design, Cumulus Linux deployment support, optics compatibility verification, and airflow planning. Orders ship within 1–3 business days with global delivery via DHL, FedEx, and UPS.