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juniper QFX Series QFX5120-32C

CurrentNetwork1U fixed switch
Juniper juniper QFX Series QFX5120-32C1U fixed switch32 ports6.4 Tbps

The Juniper QFX5120-32C is a compact 1U datacenter spine and high-density leaf switch providing 32 ports of 40G/100G QSFP28. Delivering 6.4 Tbps of switching throughput and 4.76 Bpps forwarding rate powered by Broadcom Trident 3 silicon, the QFX5120-32C is built for 100G cloud spine fabrics and high-density leaf aggregation. With comprehensive EVPN-VXLAN capabilities and carrier-grade Junos stability, the QFX5120-32C is an anchor model for enterprise and cloud datacenter architectures.

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Specifications

Brandjuniper
FamilyQFX Series
Form factor1U fixed switch
ReleasedJun 2018
Ports32x 40G/100G QSFP28 ports
Switching capacity6.4 Tbps / 4.76 Bpps forwarding throughput
Fabric rolesSpine, leaf, or datacenter interconnect (DCI) gateway
Breakout densitySupports up to 128x 25GbE or 128x 10GbE ports using breakout optics
Power and coolingDual redundant hot-swappable AC/DC power supplies with front-to-back or back-to-front airflow

Generations

Works together

How the juniper QFX Series QFX5120-32C connects to servers, storage and the network: 3 ways, with the parts and products on each path.

iSCSI and NVMe/TCP over EthernetFile storage (NFS and SMB)Hyperconverged cluster

iSCSI and NVMe/TCP over Ethernet

Keep the speed the same at all three points: a 25GbE server, a 25GbE switch port and a 25GbE array port. Mixed speeds work but the slowest link sets the pace.

Servers

Adapters for the server

Storage

Optics

iSCSI and NVMe/TCP over Ethernet: how it fits together

File storage (NFS and SMB)

Front-end ports face the clients; back-end ports (on scale-out systems) connect the nodes to each other and need their own switch pair.

Servers

Adapters for the server

Storage

Optics

File storage (NFS and SMB): how it fits together

Hyperconverged cluster

Plan at least two 25GbE ports per node to two switches; all-NVMe clusters often move to 100GbE.

HCI nodes

Adapters for the server

Optics

Hyperconverged cluster: how it fits together

Plan and size it

Check compatibility with Juniper

Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Juniper has tested with the juniper QFX Series QFX5120-32C.

Equivalent models from other brands

FAQ

Can the 100GbE ports break out to 4x 25GbE?

Yes, each QSFP28 port can be channelized to 4x 25GbE or 4x 10GbE using appropriate optics or DAC breakout cables.

Does the QFX5120-32C support MACsec encryption?

Select QFX5120-32C variants support IEEE 802.1AE MACsec AES-256 on all 32 ports.

Buying or selling QFX5120-32C?

New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.

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