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Silver 1U rackmount network switch with 48 SFP28 and 12 QSFP28 ports, dual power supplies, front-to-back airflow

Mellanox Technologies

Mellanox Technologies MSN3420-CB2RC network switch 48 SFP28 12 QSFP28 25GbE 100GbE

SKU CH-GQG6-DT6DM MPN MSN3420-CB2RC

A managed 1U rackmount switch with 48 SFP28 ports at 25GbE and 12 QSFP28 ports at 100GbE, dual AC power supplies and front-to-back airflow

  • Product formatRackmount
  • Management typeManaged
  • Main ports48 x QSFP28 + 12 x SFP28
  • Main port speed100 Gbit/s
  • Power detailsFrequency: 50-60 Hz Input range: 100-264Vac AC input current
  • Product dimensions1.72 in (H) x17.24 in (W) × 18.29 in (D) 44 mm (H) × 438 mm
  • 48 SFP28 ports enable 25GbE server connectivity
  • 12 QSFP28 ports provide 100GbE uplink capacity
  • 8Tb/s total throughput supports high-density switching
  • 1U rackmount form factor fits standard cabinets
  • Dual AC power supplies with 100-264Vac input range

1U Open Ethernet Switch with Cumulus Linux

The Mellanox Technologies MSN3420-CB2RC is a 1U rackmount network switch built on the NVIDIA Spectrum-2 platform. It runs Cumulus Linux and delivers 48 SFP28 ports for 25GbE host connectivity plus 12 QSFP28 ports for 100GbE uplinks. Dual AC power supplies and an x86 CPU provide redundancy and processing headroom for data-center deployments.

Ideal for Top-of-Rack leaf-spine architectures

This switch suits operators migrating from 10G to 25G server links while using 100GbE spine connections in a single rack unit. The C2P airflow design matches standard cold-aisle installations. Buyers needing higher port density per rack unit or a different airflow direction should evaluate alternative form factors.

4.8Tb/s total throughput and 3.58Bpps processing

The Spectrum SN3420 ASIC provides up to 4.8Tb/s of switching capacity with a packet-processing rate of 3.58Bpps. This specification determines whether the switch can sustain line-rate traffic across all 60 ports under your workload profile.

How it compares

Measured against everything we stock in Ethernet & PoE Switches, at today’s prices. Recalculated every night.

Price $17,821.99
Pricier than about 91% of the 2,759 comparable items (median $482.99).

Specifications

Product
Brand nameNVIDIA
Product lineSpectrum SN3000 Series
Model nameSN3420
Part numberMSN3420-CB2RC
Connectivity
Management typeManaged
Main port speed100 Gbit/s
Ports & slots
Main ports48 x QSFP28 + 12 x SFP28
Power
Power detailsFrequency: 50-60 Hz
Input range: 100-264Vac
AC input current: 2.9-4.5A
Size & build
Product dimensions1.72 in (H) x17.24 in (W) × 18.29 in (D)
44 mm (H) × 438 mm (W) × 464.6 mm (D)
Product weight8.5kg (18.73 lb)
Shipping weight12.70 kg
Package size711 × 610 × 102 mm
More details
Product formatRackmount

Questions about this item

Should I pick the 48 SFP28 ports or the 12 QSFP28 ports for my 25GbE server links?

Use the 48 SFP28 ports for 25GbE server connections; the 12 QSFP28 ports run at up to 100GbE for uplinks or leaf-spine links.

What does the 4.8Tb/s throughput figure mean when the switch is fully populated?

It is the aggregate non-blocking switching capacity across all 60 ports when every SFP28 runs at 25GbE and every QSFP28 at 100GbE.

What does the SFP28/QSFP28 interface cap at in practice?

SFP28 ports support 10GbE or 25GbE; QSFP28 ports support up to 100GbE per port.

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