NVIDIA Spectrum SN4000 Open Ethernet Switches

Cloud, storage, and AI interconnects with visibility at scale.

Ethernet Switch SN4000 PNY

Optimize Utilization and Efficiency with Cost-Effective Open Ethernet

NVIDIA® Spectrum®-3 based SN4000 is an open ethernet switch that combines industry-leading cloud features with groundbreaking performance to support modern scale-out distributed data center applications. With support for all speeds 1GbE through 400GbE, SN4000 is ideal for building large layer-2, layer-3, and virtualized network fabrics for both green field and brown field environments.


Max Port Speed


Max Flow Counters

512K entries

Max Access-Control Lists (ACLs)

512K entries

Network Address Translation (NAT)

100K+ entries

Max IPV4 Routes

1M entries

* QSFP-DD: quad small form-factor pluggable double density




NVIDIA Spectrum SN4000 switches support detailed and contextual telemetry with NVIDIA What Just Happened® (WJH). WJH dramatically reduces mean time to issue resolution by providing instant answers to when, what, who, where and why questions as soon as an issue occurs. Spectrum switches implement hardware- accelerated histograms track and summarize queue depths at a sub-microsecond granularity. Hardware-accelerated histograms avoid false-alerts common to simple watermarks and threshold based methods.



NVIDIA Spectrum SN4000 switches feature a fully shared packet and monolithic buffer architecture. This superior buffer architecture provides a fair, predictable and high-performance data path that is essential for scale out software defined storage and modern multi-tenant cloud deployments. Spectrum switches deliver a robust high bandwidth and low latency data path for remote direct-memory access over converged Ethernet (RoCE) and machine learning applications that leverage GPUDdirect®.



NVIDIA Spectrum SN4000 switches support best-in-class Virtual Extensible LAN (VXLAN) with support for 10X more tunnels and tunnel end points. Its 512K shared forwarding entries can be flexibly used across access-control lists (ACL), longest prefix match (LPM) routes, host routes, MAC tables, and equal-cost multi-path (ECMP) and tunnel applications.


  • Advanced network virtualization with support for high-performance, single-pass VXLAN routing and IPv6/multi-protocol label switching (MPLS) segment routing
  • Programmable pipeline with the ability to programmatically parse, process, and edit packets
  • Robust high-bandwidth data path for RoCE-based and GPUDirect-based applications
  • In-band network telemetry (INT)-ready hardware
  • Rich data center features at unprecedented scale with NVIDIA FlexFlow™ packet processing
  • Consistent performance and ultra-low latency
  • Fair bandwidth sharing with fully shared packet buffer

Supported Operating Systems

  • NVIDIA Cumulus Linux
  • NVIDIA Onyx®
  • SONiC
  • DENT

Key Features

  • Up to 12.8Tbps switching capacity
  • Up to 8.4Bpps packet processing rate
  • Support for 1/10/25/40/50/100/200/400GbE speeds
  • Advanced Explicit Congestion Notification (ECN)
  • Deep packet inspection at 512B deep
  • Single pass VXLAN bridging and routing
  • 512K forwarding entries that can be flexibly used across layer-2, layer-3, tunnelling and other protocols
  • Precision Timing Protocol (PTP), Network Timing Protocol (NTP)
  • 100K+ hardware based NAT sessions
  • Advanced telemetry with What Just Happened (WJH)


Connectors 400GbE Ports 200GbE Ports 100GbE Ports 50GbE Ports 40GbE Ports 25/10/1GbE Ports Height Max Throughput Total Packets per Second
SN4600C 64x QSFP28 100GbE 64 128** 64 128** 2U 12.8Tb/s 8.4Bpps
SN4700 32x QSFPDD 400GbE 32 64** 128** 128** 64** 128** 1U 25.6Tb/s 8.4Bpps
SN4410* 32x QSFPDD 400GbE 8 16** 24/48** 128** 64** 128** 1U 8Tb/s 8.4Bpps
SN4600* 64x QSFP56 200GbE 64 128** 128** 64 128** 2U 25.6Tb/s 8.4Bpps
SN4800* 128x QSFP28 100GbE 32 64 128 128** 64 128 4U 25.6Tb/s 8.4Bpps
SN4800* 32x QSFPDD 400GbE 32 64 128 128** 64 128 4U 25.6Tb/s 8.4Bpps
SN4800* 64x QSFP56 200GbE 32 64 128 128** 64 128 4U 25.6Tb/s 8.4Bpps

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