NVIDIA Mellanox MSX1024B-2BFS SwitchX-2 1U Open Ethernet Switch — 48 SFP+ + 12 QSFP+, Dual PSU, MLNX-OS: This is a 1U Open Ethernet switch built on the SwitchX®-2 ASIC, providing 48 ports of 10GbE over SFP+ and 12 uplink ports of 40/56GbE over QSFP+. The unit ships with two redundant AC power supplies, MLNX-OS Ethernet firmware, a PowerPC 460 management CPU, short-depth chassis, and PSU-side-to-connector-side (P2C) airflow. This is an Ethernet-only switch — it is not InfiniBand-capable. This is a refurbished unit.
Engineering Context
The SwitchX-2 ASIC provides 1.92 Tb/s of aggregate bidirectional switching capacity (480 Gb/s of SFP+ + 480 Gb/s of QSFP+ in each direction) with cut-through forwarding and sub-microsecond port-to-port latency. Each of the 12 QSFP+ ports operates at 40GbE or 56GbE FDR-Ethernet, with breakout to 4×10GbE supported on selected ports for high-density 10GbE access. Hardware DCB (PFC, ETS) and ECN enable lossless RoCE transport. RoHS6 compliant.
Deployment & Use Cases
Top-of-rack and end-of-row switching for mixed 10GbE/40GbE Open Ethernet fabrics. 40GbE uplinks to spine layers with 10GbE server access. RoCE-backed storage fabrics for Ceph, GlusterFS, and NVMe-oF over Ethernet. VMware vSphere, KVM, and OpenStack Neutron deployments needing 40GbE aggregation. Breakout to 4×10GbE for higher density 10GbE port counts in compact rack space.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MSX1024B-2BFS
Switch ASIC: SwitchX®-2
Access Ports: 48 × SFP+ (10GbE)
Uplink Ports: 12 × QSFP+ (40GbE / 56GbE FDR-Ethernet)
Aggregate Switching Capacity: 1.92 Tb/s bidirectional
Forwarding: Cut-through, sub-microsecond latency
Management: Fully managed (MLNX-OS)
CPU: PowerPC 460
Power Supplies: 2 (AC, redundant)
Airflow: P2C (PSU to connector)
Form Factor: 1U, short depth
Compliance: RoHS6
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
SFP+ cages accept DAC copper, AOC, and 10GBASE-SR/LR optical transceivers. QSFP+ cages accept 40GbE DAC, AOC, 40GBASE-SR4/LR4, and 56GbE FDR-Ethernet cables. Pairs with ConnectX-3 EN/Pro and ConnectX-4 Lx at matching speeds. Not compatible with 25GbE SFP28 or 100GbE QSFP28 optics — lanes run NRZ at 10 Gb/s. This unit is not InfiniBand-capable; it is an Ethernet switch only. QSFP+ breakout to 4×10GbE is supported on a defined subset of ports; consult MLNX-OS port-mapping documentation before planning breakout topology.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS tests every Ethernet switch for full SFP+ and QSFP+ port functional pass, ASIC bring-up, dual PSU failover, fan operation, and MLNX-OS boot before shipment. We provide expert consultation on mixed 10/40GbE Open Ethernet fabric design, global shipping with 1–3 day handling, and comprehensive warranty.