NVIDIA Spectrum SN2900 - 400GbE (SN2900-1S)
Brand: NVIDIA | Category: Network Switches
SKU: SN2900-1S | Part #: SN2900-1S | MPN: SN2900-1S
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About the NVIDIA Spectrum SN2900 - 400GbE (SN2900-1S)
The NVIDIA Spectrum SN2900 (SN2900-1S) employs a cut-through forwarding architecture that minimizes latency in ultra-high-speed data center fabrics, delivering forwarding rates of up to 38.4 Bpps across its 64 x QSFP112 400GbE ports. Built on the NVIDIA Spectrum-4 ASIC, this 1U rack-mount switch aggregates 51.2 Tbps of switching capacity, making it the cornerstone of next-generation AI and high-performance computing networks where every microsecond of latency reduction drives measurable business impact.
Network engineers and AI infrastructure teams rely on the SN2900-1S for its comprehensive routing and congestion management feature set. The switch supports BGP, OSPF, ECMP, VXLAN, and EVPN routing protocols, alongside hardware-accelerated RoCE (both RoCEv1 and RoCEv2) with DCQCN-based congestion control for reliable RDMA workloads. Flexible port speeds—100GbE, 200GbE, and 400GbE, with breakout support down to 10GbE—ensure investment protection across heterogeneous cluster topologies. Management simplicity is built in through NVIDIA UFM and NVIDIA Air orchestration platforms, in-band telemetry (INT, sFlow, SNMP, gNMI, gRPC), and OpenConfig compliance. Redundant modular power supplies with both AC and DC options, dual airflow configurations (PSE and PSI), and out-of-band RJ-45 management provide operational flexibility for demanding enterprise deployments operating between 0°C and 45°C.
Key Specifications
- Switch ASIC: NVIDIA Spectrum-4
- Port Configuration: 64 x QSFP112 400GbE ports
- Aggregate Switching Capacity: 51.2 Tbps
- Forwarding Rate: Up to 38.4 Bpps
- Supported Network OS: NVIDIA Onyx, Cumulus Linux
- RoCE Support: RoCEv1 and RoCEv2 with hardware-based congestion control
- Power Supply: Redundant modular PSUs with AC and DC options
- Form Factor: 1U Rack-Mount
To explore the NVIDIA Spectrum SN2900 (SN2900-1S) for your data center environment, contact Omnixon Global for a detailed Request for Quote.
Technical Specifications
| Brand | NVIDIA |
| Category | Network Switches |
| SKU | SN2900-1S |
| Part Number | SN2900-1S |
| Condition | New |
| Interface | 400GbE |
| Speed | 400GbE |
| Manufacturer Part Number | SN2900-1S |
| Series | Spectrum SN2900 |
| Switch ASIC | NVIDIA Spectrum-4 |
| Form Factor | 1U Rack-Mount |
| Port Configuration | 64 x QSFP112 400GbE ports |
| Aggregate Switching Capacity | 51.2 Tbps |
| Forwarding Rate | Up to 38.4 Bpps |
| Supported Port Speeds | 100GbE, 200GbE, 400GbE (with breakout: 10GbE, 25GbE, 50GbE) |
| Supported Network OS | NVIDIA Onyx, Cumulus Linux |
| Routing Protocols | BGP, OSPF, ECMP, VXLAN, EVPN |
| RoCE Support | Yes — RoCEv1 and RoCEv2 with hardware-based congestion control |
| Congestion Management | PFC, ETS, ECN, DCQCN |
| Management Interfaces | 1 x RJ-45 out-of-band management, 1 x USB |
| Power Supply | Redundant modular PSUs, AC and DC options |
| Airflow Options | Port-side exhaust (PSE) and port-side intake (PSI) |
| Operating Temperature | 0°C to 45°C |
| Dimensions | 1U (44.5 mm H x 440 mm W x 600 mm D approximate) |
| Telemetry | In-band Network Telemetry (INT), sFlow, SNMP, gNMI, gRPC |
| Management Ecosystem | NVIDIA UFM, NVIDIA Air, OpenConfig |
Frequently Asked Questions about NVIDIA Spectrum SN2900 - 400GbE (SN2900-1S)
What does the NVIDIA Spectrum SN2900 - 400GbE (SN2900-1S) do?
The NVIDIA Spectrum SN2900 - 400GbE (SN2900-1S) is enterprise networking hardware for data-center, campus, and branch deployments. Common roles include core/distribution switching, server uplinks, top-of-rack fabric, and edge connectivity in mixed Cisco/Juniper/Arista environments.
What are the headline specs of the NVIDIA Spectrum SN2900 - 400GbE (SN2900-1S)?
Key specifications for the NVIDIA Spectrum SN2900 - 400GbE (SN2900-1S): new condition; network type Ethernet Switch; network port config 32x 400GbE QSFP-DD; network speed 400GbE; network switching capacity 12.8 Tbps; network forwarding rate 9.52 Bpps; network power consumption 380W. Manufacturer part number SN2900-1S. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.
Is the NVIDIA Spectrum SN2900 - 400GbE (SN2900-1S) compatible with my infrastructure?
The NVIDIA Spectrum SN2900 - 400GbE (SN2900-1S) interoperates with standard switching protocols (LACP, MLAG/VPC, 802.1Q, OSPF/BGP). For specific cross-vendor scenarios — Cisco-to-Arista MLAG peering, fabric integration with Cumulus/SONiC, or migration from legacy Catalyst — our network engineers map a compatibility plan as part of the RFQ.