Mellanox NVIDIA Spectrum-3 SN4700 - kytkin - L3 - hallittava

For data centers that cannot afford a bottleneck, the Mellanox NVIDIA Spectrum-3 SN4700 delivers line-rate 12.8 Tb/s switching with sub-300ns latency in a compact 1U form factor. This managed L3 switch is built around the NVIDIA Spectrum-3 ASIC, offering 32 ports of 200GbE QSFP56 with full breakout flexibility to 100GbE and 50GbE. Unlike general-purpose enterprise switches, the SN4700 is engineered for high-performance computing, AI clusters, and cloud-scale fabrics where deterministic throughput and low jitter are non-negotiable. Dual hot-swappable power supplies and front-to-back cooling ensure continuous operation in demanding rack environments.

Highlights

• 32 x 200GbE QSFP56 ports with breakout support for 2x100GbE or 4x50GbE per port
• 12.8 Tb/s bidirectional switching capacity and 9.52 Bpps forwarding rate
• Sub-300ns port-to-port latency for latency-sensitive workloads
• NVIDIA Spectrum-3 ASIC with 32GB DDR4 and 64GB SSD for robust control plane
• Redundant 1+1 hot-swappable power supplies and front-to-back airflow
• Comprehensive L3 feature set: OSPF, BGP, VRRP, ECMP, PIM, PBR
• Runs NVIDIA Cumulus Linux or Onyx for open, programmable networking

In daily use

Deploy the SN4700 as a spine or high-density leaf in modern data center fabrics. Its 200GbE ports provide massive uplink capacity, while breakout cables allow flexible connectivity to 100GbE and 50GbE servers and storage. The switch supports 4K VLANs and a 256K MAC address table, making it suitable for large multi-tenant environments. Management is straightforward via the 1GbE RJ45 management port, USB console, or out-of-band interfaces, with full CLI and web-based management options. The front-to-back cooling design aligns with standard hot-aisle/cold-aisle layouts, and the redundant power supplies minimize downtime during maintenance.

Full specifications

• Switch type: Managed L3, rack-mountable (1U)
• Ports: 32 x 200GbE QSFP56 (breakout to 100GbE/50GbE)
• Switching capacity: 12.8 Tb/s (bidirectional)
• Forwarding rate: 9.52 Bpps
• Latency: <300ns
• Jumbo frame support: up to 9KB
• MAC address table: 256K entries
• VLANs: 4K
• Routing: OSPF, BGP, VRRP, ECMP, PIM, PBR
• Management ports: 1 x RJ45 console, 1 x RJ45 1GbE management, 1 x USB Type-C, 1 x USB Type-A
• Power supplies: 2 x hot-swappable, redundant (1+1)
• Cooling: Front-to-back airflow
• Operating system: NVIDIA Cumulus Linux, NVIDIA Onyx
• Processor: NVIDIA Spectrum-3 ASIC
• Memory: 32GB DDR4
• Storage: 64GB SSD
• Max power consumption: 650W

Final note

The Mellanox SN4700 is a purpose-built 200GbE switch for organizations that require uncompromising performance, low latency, and open network operating systems. Its combination of high port density, advanced L3 features, and robust hardware makes it a future-proof investment for next-generation data centers.