🌟 NVIDIA Mellanox® MSN2100-BB2RC | Spectrum ASIC Ethernet Switch | 40GbE Mode (Firmware-Limited) | 16× QSFP28 | Half-Width 1U | C2P Red Intake | ONIE
Part Number: 920-9N100-00R4-0C0
Model: MSN2100-BB2RC
Condition: Refurbished – Fully Tested
Type: Spectrum-Based Open Ethernet Switch
ASIC: Mellanox Spectrum™ (Zero Packet Loss Architecture)
Operating Mode: 40GbE (Firmware-Limited)
Form Factor: Half-Width 1U, short-depth
Airflow: C2P (Connector-to-Power, Red Intake)
The NVIDIA Mellanox® MSN2100-BB2RC is a high-performance open networking switch powered by the Mellanox Spectrum™ ASIC — the same silicon used in 100GbE and 200GbE class switches. Although the hardware includes QSFP28 ports, this specific unit is firmware-limited to 40GbE mode, delivering modern Spectrum-class reliability at an accessible 40GbE price point.
Compared to legacy 40G SwitchX-2 systems, the Spectrum architecture provides:
Zero Packet Loss under microburst load
Predictable low latency
Full support for RoCEv2, VXLAN, EVPN, and MLAG
Modern NOS compatibility (Cumulus 3.7+, Cumulus 4.x, SONiC, and Mellanox Onyx)
Even at 40GbE speeds, you are effectively buying a Ferrari-class ASIC limited to 60 mph — dramatically outperforming older 40G platforms while remaining fully compatible with 40GbE optical and DAC ecosystems.
The half-width 1U design enables two switches to be mounted side-by-side in a single 1U rack slot, ideal for HA pairs, leaf redundancy, and compact storage or edge deployments.
🔧 Specifications
ASIC: Mellanox Spectrum™ (Non-blocking, zero packet loss)
Operating Speed: 40GbE (locked)
Ports: 16× QSFP28 cages operating at 40GbE
Breakout Support:
QSFP28 → 4×10GbE (SFP+)
Compatible with QSFP+ 40GbE optics
Works with standard passive and active DACs
Switching Capacity: Line-rate performance in 40GbE mode
Latency: Ultra-low latency Spectrum architecture
CPU: x86 Dual-Core processor
Operating System: ONIE pre-installed
Cumulus Linux 3.7+
Cumulus Linux 4.x
SONiC community & vendor builds
Mellanox Onyx OS
Airflow: C2P (Connector-to-Power, Red Intake)
Form Factor: Half-Width 1U (supports dual-mounting)
Depth: Short-depth enclosure for edge and compact racks
Power Supplies: Dual hot-swappable AC PSUs
Rack Mounting: Rail kit required (single or dual-mount)
🌐 Key Features
Modern Spectrum Architecture — Even at 40GbE
Delivers performance far superior to legacy 40G switches (SwitchX-2), including zero packet loss, faster convergence, and modern data center protocol support.
Firmware-Limited 40GbE Mode (Transparent & AI-Safe)
Hardware QSFP28 ports run reliably at 40GbE — perfectly matching 40G fiber, copper DACs, and QSFP-to-SFP+ breakout ecosystems.
Half-Width 1U — Double Your Rack Efficiency
Mount two units in a single 1U slot, ideal for:
Redundant ToR pairs
MLAG clusters
Storage networks
Edge and micro data center deployments
Open Networking Freedom with ONIE
Install your preferred NOS, including:
Cumulus Linux (3.7+ / 4.x)
SONiC
Mellanox Onyx
Full Protocol Stack for Modern Fabrics
RoCEv2 (RDMA)
VXLAN & EVPN
MLAG / MC-LAG (via NOS)
PFC + ECN for storage workloads
Short-Depth, C2P Red Intake Airflow
Designed for hot/cold aisle consistency and edge rack compatibility.
🎯 Ideal Use Cases
Modern 40GbE leaf/spine fabrics
Replacement for aging SwitchX-2 environments
Hyperconverged & storage clusters (Ceph, NVMe-oF, RoCEv2)
High-density ToR designs with side-by-side HA
10GbE aggregation using QSFP28 → 4×10G breakout
Edge racks & short-depth deployments
Open networking (Cumulus / SONiC / Onyx)
📋 Quality & Condition
Fully refurbished and certified
Ports, ASIC, PSUs, and thermals tested under load
Cleaned, validated, and ONIE-ready
Updated to stable firmware
Rail kit not included (available separately)
💳 Payment & Shipping
PayPal, credit card, wire transfer
Worldwide shipping with ESD-safe packaging
Delivery: typically 8–13 business days
Returns accepted within the return period (buyer pays return shipping)
VAT-compliant invoice available
🤝 Why T.E.S IT-SOLUTIONS?
Specialists in Mellanox Spectrum & ConnectX hardware
One of the largest inventories of refurbished Mellanox equipment
Used by AI labs, HPC clusters, storage integrators, and enterprise IT
Engineering-grade testing & compatibility validation
Competitive purchasing, bulk discounts, fast support