Step 1: Begin
In this guide, we provide a simple, three-step path, to quickly get you up and running with your new QFX5120-48 switch. We’ve simplified and shortened the installation and configuration steps, and included how-to videos. You’ll learn how to install an AC-powered QFX5120-48 switch in a rack, power it up, and deploy it on your network. There’s a separate Day One+ guide for the QFX5120-32C switch (see QFX5120-32C on the Day One+ webpage). For details on installing a DC powered QFX5120-48, see QFX5120 Switch Hardware Guide.
Are you interested in getting hands-on experience with the topics and operations covered in this guide? Visit Juniper Networks Virtual Labs and reserve your free sandbox today! You’ll find the Junos Day One Experience sandbox in the stand alone category.
Meet the QFX5120 Line of Ethernet Switches
The Juniper Networks® QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches are compact, 1-U fixed configuration switches ideal for top-of-rack and spine-and-leaf deployments. You can also use the QFX5120 line of switches for high-density server connectivity, with an option to channelize the QSFP28 ports into multiple interfaces. In addition, you can deploy the QFX5120 line of switches as campus distribution and core switches. Dual hot-swappable AC or DC power supplies provide 1+1 redundancy. Five hot-swappable fan trays maintain high system availability.
The QFX5120 supports many network automation features and plug-and-play features, including zero-touch provisioning (ZTP), making it simple to deploy on your network.
Here are some details about the port configurations for the QFX5120 line of switches:
Model |
Access Ports |
---|---|
QFX5120-32C |
|
QFX5120-48T |
|
QFX5120-48Y |
|
QFX5120-48YM |
|
Install the QFX5120
What's in the Box?
QFX5120 switch with five preinstalled fan modules and two preinstalled AC power supplies
Two AC power cords appropriate for your geographical location
A four-post rack mounting kit that contains:
Two front mounting brackets for mounting the switch flush with the front posts of a rack
Twelve flat head 4x6-mm Phillips screws for attaching the front mounting brackets to the switch
Two rear mounting brackets
The kit also contains two recessed mounting brackets for mounting the switch in a recessed position from the front posts of a rack.
We no longer include a DB-9 to RJ-45 cable or a DB-9 to RJ-45 adapter with a CAT5E copper cable as part of the device package. If you require a console cable, you can order it separately with the part number JNP-CBL-RJ45-DB9 (DB-9 to RJ-45 adapter with a CAT5E copper cable).
What Else Do I Need?
You’ll need to provide the following:
Someone to help you secure the switch to the rack
Eight mounting screws to secure the switch to the rack
A number 2 Phillips (+) screwdriver
An electrostatic discharge (ESD) grounding strap
A management host such as a laptop or desktop PC
An Ethernet cable
An RJ-45 to DB-9 serial port adapter
A serial-to-USB adapter (if your laptop or desktop PC doesn’t have a serial port)
A grounding cable: 14 AWG (1.5 mm²), minimum 90° C wire, or as permitted by the local code, with a Panduit LCD10-10A-L or equivalent lug attached
CAUTION:Ensure that a licensed electrician has attached the appropriate grounding lug to the grounding cable that you supply. Using a grounding cable with an incorrectly attached lug can damage the switch.
Two 10-32 x .25-in. screws with #10 split-lock washers to secure the grounding lug
Install the QFX5120 in a Four-Post Rack
You can mount the QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches in a four-post 19-in. rack or in a cabinet that contains a four-post 19-in. rack. In this guide, we’ll walk you through how to mount the switch in a four-post rack.
Power On
Now that you’ve mounted your switch in the rack, you’re ready to connect it to power.
The AC-powered QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches come with two AC power supplies preinstalled on the rear panel.