Juniper NETWORKS EX3400 Ethernet Switch Instruction Manual
- June 16, 2024
- JUNIPER NETWORKS
Table of Contents
Juniper NETWORKS EX3400 Ethernet Switch Instruction Manual
Step 1: Begin
In this guide, we provide a simple, three-step path, to quickly get you up and running with your new EX3400. We’ve simplified and shortened the installation and configuration steps, and included how-to videos. You’ll learn how to install an AC-powered EX3400, power it up, and configure basic settings.
NOTE: 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. EX switches are not virtualized. In the demonstration, focus on the virtual QFX device. Both the EX and QFX switches are configured with the same Junos commands.
Meet the EX3400 Ethernet Switch
The Juniper Networks EX3400 Ethernet Switches are a cost-effective solution
for today’s most demanding converged data, voice, and video enterprise access
networks. The fixed-configuration 1-RU switches are perfect for campus wiring
closet deployments. They offer levels of performance and management previously
available only with high-end access switches.
The EX3400 switches support Power over Ethernet (PoE) and Power over Ethernet Plus (PoE+) ports for powering attached network devices.
You can interconnect up to 10 EX3400 switches to form a Virtual Chassis and thus manage these switches as a single logical device.
In this guide, we show you how to install the following EX3400 AC-powered switch models:
• EX3400-24T: 24 10/100/1000BASE-T ports, four SFP+ uplink ports
• EX3400-24P: 24 10/100/1000BASE-T PoE/PoE+ ports, four SFP+ uplink ports
• EX3400-48T: 48 10/100/1000BASE-T ports, four SFP+ uplink ports
• EX3400-48P: 48 10/100/1000BASE-T PoE/PoE+ ports, four SFP+ uplink ports
Install the EX3400 Switch
You can install the EX3400 switch on a desk or table, on a wall, or in a two- post or four-post rack. The accessory kit that ships in the box has the brackets you need to install the EX3400 switch in a two-post rack. In this guide, we walk you through how to do that.
NOTE: If you want to mount the switch on a wall or in a four-post rack, you’ll need to order a wall mount or rack mount kit. The four-post rack mount kit also has brackets for mounting the EX3400 switch in a recessed position in the rack.
What’s in the Box?
- EX3400 switch
- An AC power cord appropriate for your geographical location
- Two mounting brackets and eight mounting screws
- Power cord retainer clip
What Else Do I Need?
You’ll also need:
- Someone to help you secure the switch to the rack
- Mounting screws to secure the EX3400 to the rack
- A number two Phillips (+) screwdriver
- A serial-to-USB adapter (if your laptop doesn’t have a serial port)
- An Ethernet cable with RJ-45 connectors attached and an RJ-45 to DB-9 serial port adapter
NOTE: 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).
Install the EX3400 in a Two-Post Rack
- Review General Safety Guidelines and Warnings.
- Attach the mounting brackets to the sides of the EX3400 switch using the eight screws that came in the box and the screwdriver.
You’ll notice there are three locations on the side panel where you can attach the mounting brackets: front, center, and rear. Attach the mounting brackets to the location that best suits where you want the EX3400 switch to sit in the rack.
3. Lift the EX3400 switch and position it in the rack. Line up the bottom hole in each mounting bracket with a hole in each rack rail, making sure the EX3400 switch is level.
4. While you’re holding the EX3400 switch in place, have someone insert and
tighten the rack mount screws to secure the mounting brackets to the rack
rails. Make sure to tighten the screws in the two bottom holes first and then
tighten the screws in the two top holes.
5. Check that the mounting brackets on each side of the rack are level.
Power On
Now you’re ready to connect the EX3400 switch to a dedicated AC power source.
The switch comes with the AC power cord for your geographic location.
Here’s how to connect an EX3400 switch to AC power:
1. On the rear panel, connect the power cord retainer clip to the AC power
supply:
a. Push the end of the power cord retainer strip into the slot above the power
cord socket until the strip snaps into place. Ensure that the loop in the
retainer strip faces the power cord. The power cord retainer clip extends out
of the chassis by 3 in. (7.62 cm).
b. Press the small tab on the retainer strip to loosen the loop. Slide the
loop until there is enough space to insert the power cord coupler into the
power cord socket.
c. Plug in the power cord to the power cord socket.
d. Slide the loop toward the power supply until it is snug against the base of
the coupler.
e. Press the tab on the loop and draw out the loop into a tight circle.
2. If the AC power outlet has a power switch, turn it off.
3. Plug in the power cord to the AC power outlet.
4. If the AC power outlet has a power switch, turn it on.
The EX3400 switch powers up as soon you connect it to power. It doesn’t have a
power switch. When the SYS LED on the front panel is lit solid green, the
switch is ready to use.
Step 2: Up and Running
Now that the EX3400 switch is powered on, let’s do some initial configuration to get the switch up and running on your network. It’s simple to provision and manage the EX3400 switch and other devices on your network. Choose the configuration tool that’s right for you:
- Juniper Mist. To use Mist, you’ll need an account on the Mist Cloud Platform. See Overview of Connecting Mist Access Points and Juniper EX Series Switches.
- Juniper Networks Contrail Service Orchestration (CSO). To use CSO, you’ll need an authentication code. See SD-WAN Deployment Overview in the Contrail Service Orchestration (CSO) Deployment Guide.
- CLI commands
Plug and Play
EX3400 switches already have factory-default settings configured right out of
the box to make them plug-and-play devices. The default settings are stored in
a configuration file that:
• Sets Ethernet switching and storm control on all interfaces
• Sets Power over Ethernet (PoE) on all RJ-45 ports of models that provide PoE
and PoE+
• Enables the following protocols:
• Internet Group Management Protocol (IGMP) snooping
• Rapid Spanning Tree Protocol (RSTP)
• Link Layer Discovery Protocol (LLDP)
• Link Layer Discovery Protocol-Media Endpoint Discovery (LLDP-MED)
These settings are loaded as soon as you power on the EX3400 switch. If you want to see what’s in the factory-default configuration file for your EX3400 switch, see EX3400 Switch Default Configuration.
Customize the Basic Configuration Using the CLI
Have these values handy before you begin customizing settings for the switch:
• Hostname
• Root authentication password
• Management port IP address
• Default gateway IP address
• (Optional) DNS server and SNMP read community
1. Verify that the serial port settings for your laptop or desktop PC are set
to the default:
• Baud rate—9600
• Flow control—None
• Data—8
• Parity—None
• Stop bits—1
• DCD state—Disregard
2. Connect the console port on the EX3400 switch to a laptop or desktop PC
using the Ethernet cable and the RJ-45 to DB-9 serial port adapter (not
provided). If your laptop or desktop PC doesn’t have a serial port, use a
serial-to-USB adapter (not provided).
3. At the Junos OS login prompt, type root to log in. You don’t need to enter
a password. If the software boots before you connect your laptop or desktop PC
to the console port, you might need to press the Enter key for the prompt to
appear.
NOTE: EX switches running current Junos software are enabled for Zero Touch
Provisioning (ZTP). However, when you configure an EX switch for the very
first time, you’ll need to disable ZTP. We show you how to do that here. If
you see any ZTP-related messages on the console, just ignore them.
Step 3: Keep Going
Congratulations! Now that you’ve done the initial configuration, your EX3400
switch is ready to use.
Here are some things you can do next:
What’s Next?
General Information
Learn With Videos
Our video library continues to grow! We’ve created many, many videos that demonstrate how to do everything from install your hardware to configure advanced Junos OS network features. Here are some great video and training resources that will help you expand your knowledge of Junos OS.
Juniper Networks, the Juniper Networks logo, Juniper, and Junos are registered
trademarks of Juniper Networks, Inc. in the United States and other countries.
All other trademarks, service marks, registered marks, or registered service
marks are the property of their respective owners. Juniper Networks assumes no
responsibility for any inaccuracies in this document. Juniper Networks
reserves the right to change, modify, transfer, or otherwise revise this
publication without notice. Copyright © 2023 Juniper Networks,
Inc. All rights reserved.
Read More About This Manual & Download PDF:
References
- Juniper Networks Inc. - Sign In
- EX3400 Ethernet Switch Overview and Deployment
- Contrail Archives | Juniper Networks
- Contrail Archives | Juniper Networks
- Junos OS - TechLibrary - Juniper Networks
- Getting Started with Junos OS | Junos OS | Juniper Networks
- Installing Software on EX Series Switches | Junos OS | Juniper Networks
- EX3400 Switch Hardware Guide | Juniper Networks
- General Safety Guidelines and Warnings | Juniper Networks
- Configuring Junos OS on the EX3400 | Juniper Networks
- Juniper Licensing User Guide | Licensing | Juniper Networks
- Activate Your Licenses | Licensing | Juniper Networks
- EX3400 Documentation | Juniper Networks
- EX2300 Documentation | Juniper Networks
- Security Design Center | Juniper Networks
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