NVIDIA Spectrum-2 SN3800 Ethernet Switch
Brand: NVIDIA | Category: Network Switches
SKU: NVID-MSN3800VS2FO | Part #: MSN3800-VS2FO | MPN: MSN3800-VS2FO
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About the NVIDIA Spectrum-2 SN3800 Ethernet Switch
The NVIDIA Spectrum-2 SN3800 is a 64-port 100GbE (or 16-port 400GbE via breakout) Ethernet switch based on the Spectrum-2 ASIC, delivering 12.8Tb/s of aggregate non-blocking switching bandwidth in a 2U form factor. It is one of the most widely deployed NVIDIA Ethernet switches in the enterprise, offering a combination of high port density, deep and configurable buffers, and a comprehensive enterprise networking feature set. The Spectrum-2 ASIC provides hardware-based RoCEv2 support with PFC and ECN for lossless RDMA networking, making the SN3800 a capable switch for AI training fabrics built on 100GbE Ethernet.
The SN3800 runs NVIDIA Cumulus Linux, which provides a Linux-native NOS with support for a full range of routing and switching protocols including BGP (with EVPN), OSPF, VxLAN, MLAG, and advanced QoS. Its large, flexible buffer pool allows operators to tune buffer allocations per-port and per-queue to handle bursty traffic patterns from storage and AI workloads without packet loss. NVIDIA NetQ network telemetry platform integration provides continuous streaming health monitoring, latency tracking, and root-cause analysis for the SN3800 fabric.
The SN3800 is a mainstay in enterprises with 100GbE server connectivity needs, serving in both leaf and spine roles depending on the scale of deployment. It is particularly popular in organizations running mixed AI and general-purpose data center workloads, where its flexibility and proven stability in production environments are valued. As enterprises plan migrations toward 400GbE, the SN3800 frequently serves as a transitional spine platform while server and storage connectivity migrates to higher speeds.
Ideal for
- Leaf and spine switching in enterprise data centers with 25GbE/100GbE server connectivity
- RoCEv2 RDMA fabric for AI training clusters using 100GbE Ethernet
- High-density storage fabric aggregation for SAN, NVMe-oF, and scale-out NAS
- Multi-tenant data center overlay networking with EVPN/VXLAN
- Core/aggregation switch in medium-to-large enterprise campus and data center networks
- Hierarchical fat-tree fabric construction for HPC and AI workloads at 100GbE scale
Technical specifications
| Manufacturer | NVIDIA |
| Part Number | MSN3800-VS2FO |
| Switch ASIC | NVIDIA Spectrum-2 |
| Ethernet Speed | 100GbE per port (native); 400GbE via breakout grouping |
| Total Ports | 64 x QSFP28 100GbE ports (supports 4x25GbE breakout per port) |
| Breakout Support | 64 x 100GbE, 256 x 25GbE, or 16 x 400GbE (4-port grouping) |
| Aggregate Bandwidth | 12.8 Tb/s non-blocking |
| Forwarding Rate | 9.5 Bpps |
| Latency | <500 ns port-to-port (cut-through mode) |
| Buffer Architecture | Large shared and dedicated configurable buffers; deep buffer support |
| RDMA Support | RoCEv2 with PFC, ECN, hardware-based congestion management |
| Layer 2 Features | VLAN, MSTP/RSTP, LACP, MLAG, VxLAN, EVPN-MH |
| Layer 3 Features | BGP (EVPN), OSPF, IS-IS, ECMP (64-way), BFD, PIM-SM, IGMP snooping |
| Management Interface | 1 x 10/100/1000 RJ-45 OOB; USB console |
| Operating System | NVIDIA Cumulus Linux |
| Telemetry | NVIDIA NetQ streaming telemetry, gNMI, SNMP, sFlow |
| Form Factor | 2U rack-mount |
| Dimensions | 87 x 440 x 540 mm (H x W x D) |
| Power Supply | Dual redundant hot-swap PSUs, 1200W typical |
| Cooling | Hot-swap redundant fans, port-side exhaust or intake |
| Operating Temperature | 0°C to 40°C |
| Standards | IEEE 802.3bj (100GbE), 802.1Q, 802.3ad, 802.3x, 802.1X |
Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.
Technical Specifications
| Brand | NVIDIA |
| Category | Network Switches |
| SKU | NVID-MSN3800VS2FO |
| Part Number | MSN3800-VS2FO |
| Condition | New |
| Switch ASIC | NVIDIA Spectrum-2 |
| Ethernet Speed | 100GbE per port (native); 400GbE via breakout grouping |
| Total Ports | 64 x QSFP28 100GbE ports (supports 4x25GbE breakout per port) |
| Breakout Support | 64 x 100GbE, 256 x 25GbE, or 16 x 400GbE (4-port grouping) |
| Aggregate Bandwidth | 12.8 Tb/s non-blocking |
| Forwarding Rate | 9.5 Bpps |
| Latency | <500 ns port-to-port (cut-through mode) |
| Buffer Architecture | Large shared and dedicated configurable buffers; deep buffer support |
| RDMA Support | RoCEv2 with PFC, ECN, hardware-based congestion management |
| Layer 2 Features | VLAN, MSTP/RSTP, LACP, MLAG, VxLAN, EVPN-MH |
| Layer 3 Features | BGP (EVPN), OSPF, IS-IS, ECMP (64-way), BFD, PIM-SM, IGMP snooping |
| Management Interface | 1 x 10/100/1000 RJ-45 OOB; USB console |
| Operating System | NVIDIA Cumulus Linux |
| Telemetry | NVIDIA NetQ streaming telemetry, gNMI, SNMP, sFlow |
| Form Factor | 2U rack-mount |
| Dimensions | 87 x 440 x 540 mm (H x W x D) |
| Power Supply | Dual redundant hot-swap PSUs, 1200W typical |
| Cooling | Hot-swap redundant fans, port-side exhaust or intake |
| Operating Temperature | 0°C to 40°C |
| Standards | IEEE 802.3bj (100GbE), 802.1Q, 802.3ad, 802.3x, 802.1X |
Frequently Asked Questions about NVIDIA Spectrum-2 SN3800 Ethernet Switch
What does the NVIDIA Spectrum-2 SN3800 Ethernet Switch do?
The NVIDIA Spectrum-2 SN3800 Ethernet Switch 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-2 SN3800 Ethernet Switch?
Key specifications for the NVIDIA Spectrum-2 SN3800 Ethernet Switch: new condition; manufacturer NVIDIA; part number MSN3800-VS2FO; switch asic NVIDIA Spectrum-2; ethernet speed 100GbE per port (native); 400GbE via breakout grouping; total ports 64 x QSFP28 100GbE ports (supports 4x25GbE breakout per port); breakout support 64 x 100GbE, 256 x 25GbE, or 16 x 400GbE (4-port grouping). Manufacturer part number MSN3800-VS2FO. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.
Is the NVIDIA Spectrum-2 SN3800 Ethernet Switch compatible with my infrastructure?
The NVIDIA Spectrum-2 SN3800 Ethernet Switch 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.