NVIDIA Mellanox MSN4600-CS2R Spectrum-3 2U 64-Port 100GbE Open Ethernet Switch with Onyx OS: This is a 2U fixed-form-factor Open Ethernet top-of-rack/aggregation switch built on the NVIDIA Spectrum-3 ASIC, with 64 QSFP28 ports of 100GbE, C2P (Connector-to-Power) airflow, dual redundant AC PSUs, and Mellanox Onyx OS pre-installed. This is the Onyx pre-loaded SKU; it is NOT the Cumulus pre-loaded "-CS2RC" variant nor the ONIE-only "-CS2RO" variant. NVIDIA P/N 920-9N302-00R7-0X0. This is a refurbished unit.
Engineering Context
The MSN4600-CS2R delivers line-rate 100GbE switching across all 64 QSFP28 ports using NVIDIA Spectrum-3 silicon, providing deterministic low latency, a unified shared buffer for fairness under microbursts, and full streaming telemetry. Onyx is NVIDIA Mellanox's vendor NOS, with mature Layer 2/Layer 3, MLAG, VXLAN/EVPN, advanced QoS, and management/automation interfaces (CLI, REST API, Ansible). C2P airflow places intake on the cabling face, suitable for hot-aisle/cold-aisle racks where ports face the cold aisle.
Deployment & Use Cases
Leaf or spine layer of 100GbE leaf-spine Ethernet fabrics with NVIDIA-supported Onyx NOS. Enterprise core and aggregation switching where vendor-supported turn-key NOS is preferred over open-source SONiC. EVPN-VXLAN overlays in cloud and enterprise data centers. Aggregation for AI/ML clusters and HPC compute pods using ConnectX-5/6 adapters.
Technical Specifications
- OEM: NVIDIA Mellanox
- Part Number: MSN4600-CS2R (NVIDIA P/N 920-9N302-00R7-0X0)
- Form Factor: 2U fixed rackmount
- Switching ASIC: NVIDIA Spectrum-3
- Ports: 64 x QSFP28 (100GbE per port)
- Throughput Class: Line-rate 6.4 Tb/s switching capacity
- CPU: x86 management processor
- Operating System: Mellanox Onyx OS (pre-installed)
- Airflow: C2P (Connector-to-Power)
- Power Supplies: Dual AC, redundant
- Architecture: Open Ethernet
- Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Constraints
Compatible with NVIDIA Mellanox QSFP28 100GbE optics, AOCs, and DACs (e.g., MMA1B00 family, MFA1A00 AOCs, MCP1600 DACs) and ConnectX-4/5/6 adapters in 100GbE mode. Includes Onyx OS pre-installed; SONiC and Cumulus Linux are NOT pre-loaded on this -CS2R variant (Onyx can be replaced via ONIE if desired). Airflow is C2P only; switching to a P2C-airflow rack design will require the matching variant. Rail kit is NOT included unless otherwise specified. Not an InfiniBand HDR/NDR switch.
Frequently Asked Questions (FAQ)
Q. What is the Data Rate of the MSN4600-CS2R?
The data rate of the MSN4600-CS2R is 100GbE.
Q. Is the MSN4600-CS2R supplied new or refurbished, and who supplies it?
The MSN4600-CS2R is supplied refurbished by T.E.S IT-SOLUTIONS, lab-tested before dispatch and shipped from EU stock with 1-3 business day handling. Full listing and current pricing at tes-itsolutions.com.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS validates each switch for port reachability, PSU redundancy, thermal stability, and Onyx boot integrity before shipment. We provide expert consultation on 100GbE Ethernet fabric design, Onyx configuration, EVPN-VXLAN deployment, global shipping, and a comprehensive warranty. View this product. Handling time 1–3 business days.
