Overview
The NVIDIA Spectrum SN3420 is a 1U open Ethernet switch featuring 48×25GbE SFP28 ports and 12×100GbE QSFP28 ports, delivering up to 2.4Tbps switching capacity. Designed to evolve host connectivity from 10G to 25G and enable high-performance leaf-spine topologies, it supports flexible breakout options and provides 3.58 billion packets per second processing capacity. The SN3420 offers precision timing and compatibility with multiple operating systems, including Cumulus Linux and SONiC, making it an ideal choice for modern data centers.
Use Cases
- Top-of-rack (ToR) switch in leaf-spine CLOS architectures
- Scalable migration from 10G to 25G host connectivity
- Enterprise aggregation and cloud fabric
- Cumulus Linux, SONiC, and open NOS deployments
Ports & Optics
- 48 × 25GbE SFP28 ports
- 12 × 100GbE QSFP28 ports
- Breakout: up to 96 × 50G or 96 × 25G (via breakout)
- QSFP28 optics up to 3m DAC support
- Optics power: up to 12W (B2F), 20W (F2B)
- 1 × RJ45 Management, 1 × Console, 1 × USB Type-A
Switch Hardware
- Switching capacity: 2.4 Tbps
- 3.58 billion packets per second (Bpps) processing capacity
- Dual-core x86 CPU
- 8GB DDR RAM
- 32GB SSD storage
- Packet buffer: 42MB
- Latency: 425ns (cut-through mode)
Platform Features
- ONIE preloaded (SONiC NOS ready)
- Pre-loaded with Cumulus Linux and ONIE
- Timing: IEEE 1588v2 (1-step/2-step), SyncE, TC/BC
- BMC with IPMI 2.0, Serial-over-LAN, remote upgrade
- Layer 2–7 packet classification & telemetry support
Traffic Management
- 802.3ad LACP, Q-in-Q, PVLAN, TRILL, PBB
- Hardware IP routing: OSPF, BGP, IS-IS, VRF
- Multicast: IGMPv1/2/3, PIM-SM, DM, SSM
- DCBX, ETS, PFC, QCN (congestion control)
- QoS: 2-rate, 3-color, SP, WRR, WDRR
Cooling & Power
- 1RU rackmount chassis
- 2 hot-swap power supplies (1+1 redundant)
- Max draw: ~98W (with optics)
- 5 hot-swappable fans (N+1 redundant)
- Available in forward or reverse airflow
Environmental
- Operating Temp: 0°C to 40°C
- Humidity: 10% to 85% non-condensing
- Altitude: up to 3050m
- Noise level: 73.7 dB(A)
- MTBF: >150,000 hours
- Certifications: CE, FCC, VCCI, UL, RoHS
Ordering Information
- 920-9N213-00F7-0C0: MSN3420-CB2FC, 1U, 48x25GbE + 12x100GbE, Cumulus Linux, P2C airflow