Quick Start Guide
QFX5120 Switch Quick Start
IN THIS GUIDE
System Overview | 1
Tools and Parts Required for Installation | 2
Step 1: Unpack the QFX5120 Switch | 3
Step 2: Mount the Switch on Four Posts of a Rack | 4
Step 3: Connect the QFX5120 Switch to Earth Ground | 9
Step 4: Connect Power to the Switch | 10
Step 5: Perform Initial Configuration | 16
Safety Warnings Summary | 19
Contacting Juniper Networks | 20
System Overview
The Juniper Networks
®
QFX5120 Switch delivers low-latency, rich Layer 2 and Layer 3 features, VXLAN overlay support,
and 100-Gigabit Ethernet (100GbE) uplinks, making it the ideal switch for access and top-of-rack deployments and for
enterprise multicloud deployments. Featuring Layer 3 gateway capabilities for routing between virtualized and bare-metal
servers, the QFX5120 is designed for extremely agile data centers that demand support for overlay and underlay network
architectures.
The QFX5120 switches are available in three models—QFX5120-32C, QFX5120-48Y, and QFX5120-48T. Each model is
available in two variants featuring AC power supplies with front-to-back or back-to-front airflow and two variants featuring
DC power supplies with front-to-back or back-to-front airflow.
QFX5120-32C switches offer 32 100GbE ports that support quad small form-factor pluggable 28 (QSFP28) transceivers
and 2 10GbE ports that support small form-factor pluggable plus (SFP+) transceivers. Junos OS Release 19.1R1 is the first
Junos OS release that supports QFX5120-32C switches.
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