QFX5120 Switch Quick Start Guide
The QFX5120 delivers low latency, native 25GbE, rich Layer 2 and Layer 3 features, VXLAN overlay support, and 100GbE uplinks,
making it the ideal switch for access and top-of-rack deployments. Featuring Layer 3 gateway capabilities for bridging between
virtualized and bare-metal servers, the QFX5120 is designed for extremely agile data centers that demand support for overlay/
underlay network architectures. The high-density 10GbE, 25GbE, 40GbE, and 100GbE ports also make the QFX5120 ideally suited
for deployment as leaf-and-spine and leaf topologies. Featuring 48 wire-speed 10GbE/25GbE small form-factor pluggable and
pluggable plus transceiver (SFP/SFP+/SFP28) ports and 8 wire-speed 40GbE/100GbE quad SFP+ transceiver (QSFP+/QSP28)
ports in a compact 1U platform, the QFX5120 provides the flexibility to support mixed 1GbE, 10GbE, 25GbE, 40GbE, and 100GbE
environments.
Starting with Junos OS Release 18.3R1, the QFX5120-48Y switch is available as a fixed-configuration switch with the following
built-in ports:
•
Forty-eight 25-Gigabit Ethernet ports that can operate at 1-Gbps, 10-Gbps, or 25-Gbps speed and support SFP, SFP+, or SFP28
transceivers.
•
Eight 100-Gigabit Ethernet ports that can operate at 40-Gbps or 100-Gbps speed and support QSFP+ or QSFP28 transceivers.
When these ports operate at 40-Gbps speed, you can configure four 10-Gbps interfaces and connect breakout cables, increasing
the total number of supported 10-Gbps ports to 80. When these ports operate at 100-Gbps speed, you can configure four
25-Gbps interfaces and connect breakout cables, increasing the total number of supported 25-Gbps ports to 80.
A total of four models are available: two featuring AC power supplies and front-to-back or back-to-front airflow and two featuring
DC power supplies and front-to-back or back-to-front airflow.
Tools and Parts Required for Installation
NOTE: See the complete documentation at https://www.juniper.net/documentation/product/en_US/qfx5120.
To mount a Juniper Networks QFX5120 Ethernet switch on a rack, you need:
•
Two front-mounting brackets and twelve screws to secure the brackets to the chassis—provided
•
Two rear-mounting brackets—provided
•
Screws to secure the chassis to the rack—not provided
•
Phillips (+) screwdriver, number 2—not provided
•
Electrostatic discharge (ESD) grounding strap—not provided
•
Fan module—preinstalled
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