NVIDIA Mellanox MSN2700-CS2FO 1U Open Ethernet Switch: This is a 1U fixed-configuration Spectrum-based Ethernet switch with 32 QSFP28 ports for 100GbE connectivity. The CS2FO suffix denotes the dual AC PSU configuration with P2C (Power-to-Connector, forward) airflow. This is a fully managed open-networking switch, not an unmanaged commodity device. This is a refurbished unit.
Engineering Context
The MSN2700-CS2FO is built around the Mellanox Spectrum ASIC, providing wire-speed L2/L3 forwarding across all 32 ports of 100GbE. Each QSFP28 port can be split into 4 × 25GbE or 2 × 50GbE breakout, yielding up to 64 × 50GbE or 128 × 25GbE logical ports. The switch is ONIE-bootable for Mellanox Onyx, Cumulus Linux, or SONiC. P2C airflow uses the standard hot-aisle/cold-aisle data center orientation. Forwarding is non-blocking with cut-through latency.
Deployment & Use Cases
Spine-layer aggregation in 100GbE leaf-spine fabrics. Top-of-Rack switching for GPU and HPC compute clusters with ConnectX-4/5/6 adapters. NVMe-oF storage backbone for all-flash arrays. Hyperscale cloud running SONiC. Standard front-to-back airflow rack environments.
Technical Specifications
- OEM: NVIDIA Mellanox
- Part Number: MSN2700-CS2FO
- ASIC: Mellanox Spectrum
- Port Configuration: 32 × QSFP28
- Port Speed: 100GbE per port (with breakout to 25GbE/50GbE)
- Form Factor: 1U rackmount
- CPU: x86 control processor
- Power Supplies: Dual AC, hot-swappable
- Airflow: P2C (Power-to-Connector, forward)
- OS Support: Mellanox Onyx, Cumulus Linux, SONiC (ONIE-bootable)
- Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Constraints
Compatible with NVIDIA Mellanox QSFP28 DACs, AOCs, and SR4/LR4 transceivers. Pairs with ConnectX-4, ConnectX-5, ConnectX-6 Dx, and ConnectX-7 Ethernet adapters. Ethernet-only — for InfiniBand workloads, a Quantum or SwitchIB-2 platform is required. Forward airflow (P2C) only; not suitable for reverse-airflow racks without redirected cooling. Rail kit is not included and must be ordered separately.
Why TES
T.E.S IT-SOLUTIONS tests every switch under power, validates all 32 ports under traffic load, verifies PSU redundancy, and confirms fan and thermal operation prior to shipment. T.E.S IT-SOLUTIONS ships globally with 1–3 day handling and offers expert deployment consultation.