NVIDIA Mellanox MSN2700-BS2R 40GbE 1U Open Ethernet Switch with NVIDIA Onyx: This is a 1U Open Ethernet switch from the MSN2700 family configured for 40GbE-only operation, providing 32 QSFP+ ports in a standard-depth chassis. The base "R" suffix (no trailing C or O) denotes factory-loaded NVIDIA Onyx (MLNX-OS), the Mellanox-curated commercial NOS for turnkey deployments. This is a 40GbE-only Ethernet leaf/aggregation switch, not a 100GbE or InfiniBand platform. This is a refurbished unit.
Engineering Context
The chassis provides 32 QSFP+ ports at 40GbE line rate with non-blocking forwarding. NVIDIA Onyx (formerly MLNX-OS) provides a CLI/SNMP/API management surface with full L2/L3 feature support including MLAG, VRRP, OSPF, BGP, IGMP snooping, sFlow telemetry, and What-Just-Happened (WJH) packet drop visibility. The chassis includes 2 hot-swappable AC power supplies for N+1 redundancy and an x86 management CPU. C2P (Connector-to-Power, reverse) airflow draws cool air from the port side toward the power supply side.
Deployment & Use Cases
40GbE leaf switching in enterprise data centers, aggregation in financial services trading networks where Onyx telemetry and WJH visibility are valued, MLAG pairs in high-availability campus cores, IPTV/multicast distribution leveraging IGMP snooping, and turnkey deployments where a Mellanox-supported commercial NOS is required for vendor support.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MSN2700-BS2R
Port Configuration: 32 × QSFP+
Ethernet Speed per Port: 40GbE
Form Factor: 1U
Chassis Depth: Standard
Airflow: C2P (Reverse, Connector-to-Power)
Power Supplies: 2 × AC, hot-swappable
Management CPU: x86
Pre-loaded OS: NVIDIA Onyx (MLNX-OS)
Protocol: Ethernet only (40GbE)
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with NVIDIA Mellanox QSFP+ optics and DAC/AOC cables (MC2210130 40GbE DAC, MC2210411 40GbE SR4, MC6709309 40GbE AOC) and third-party QSFP+-compliant 40GbE optics. Onyx license is preserved with the unit; license transfer rules per NVIDIA EULA apply when changing ownership. Not configured for 100GbE — this is a 40GbE-only platform. Not a VPI/InfiniBand switch. Rail kit is NOT included and must be ordered separately. C2P airflow is fixed and not field-reversible. To run Cumulus Linux or SONiC, the unit must be re-imaged via ONIE (Onyx license is then forfeited).
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS performs Onyx boot validation, port-by-port link testing, and PSU/fan diagnostics on every refurbished MSN2700 switch. Browse our full Mellanox Ethernet catalog at https://www.tes-itsolutions.com. Standard handling time is 1–3 business days.