Juniper Day One+ User manual

Day One+
EX3400
IN THIS GUIDE
Step 1: Begin | 1
Step 2: Up and Running | 6
Step 3: Keep Going | 10
Step 1: Begin
IN THIS SECTION
Meet the EX3400 Ethernet Switch | 2
Install the EX3400 Switch | 2
Power On | 5
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
IN THIS SECTION
What’s in the Box? | 3
What Else Do I Need? | 3
Install the EX3400 in a Two-Post Rack | 3
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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
•An Ethernet cable with RJ-45 connectors attached and an RJ-45 to DB-9 serial port adapter
•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)
Install the EX3400 in a Two-Post Rack
1. Review General Safety Guidelines and Warnings
2. Attach the mounting brackets to the sides of the EX3400 switch using the eight screws that came in the box and the
screwdriver.
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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.
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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.
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Step 2: Up and Running
IN THIS SECTION
Plug and Play | 7
Customize the Basic Configuration Using the CLI | 7
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
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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 that came in the box with the switch. If your laptop or desktop PC doesn't have a serial port,
use a serial-to-USB adapter (not provided).
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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.
FreeBSD/arm (w) (ttyu0):
login: root
4. Start the CLI.
root@:RE:0% cli
{master:0} root>
5. Enter configuration mode.
{master:0} root> configure
{master:0}[edit]
root#
6. Delete the ZTP configuration. Factory default configurations can vary over different releases. You may see a message
that the statement does not exist. Don’t worry, it’s safe to proceed.
{master:0}[edit]
root# delete chassis auto-image-upgrade
7. Add a password to the root administration user account. Enter a plain-text password, an encrypted password, or an
SSH public key string. In this example, we show you how to enter a plain-text password.
{master:0}[edit]
root# set system root-authentication plain-text-password
New password: password
Retype new password: password
8. Activate the current configuration to stop ZTP messages on the console.
{master:0}[edit]
8

root# commit
configuration check succeeds
commit complete
9. Configure the hostname.
{master:0}[edit]
root# set system host-name name
10. Configure the IP address and prefix length for the management interface on the switch. As part of this step, you remove
the factory default DHCP setting for the management interface.
{master:0}[edit]
root# delete interfaces vme unit 0 family inet dhcp
root# set interfaces vme unit 0 family inet address address/prefix-length
NOTE: The management port vme (labeled MGMT) is on the front panel of the EX3400 switch.
11. Configure the default gateway for the management network.
{master:0}[edit]
root# set routing-options static route 0/0 next-hop address
12. Configure the SSH service. By default the root user cannot login remotely. In this step you enable the SSH service and
also enable root login via SSH.
{master:0}[edit]
root# set system services ssh root-login allow
13. Optional: Configure the IP address of a DNS server.
{master:0}[edit]
root# set system name-server address
14. Optional: Configure an SNMP read community.
{master:0}[edit]
root# set snmp community community_name
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15. Optional: Continue customizing the configuration using the CLI. See the Getting Started Guide for Junos OS for more
details.
16. Commit the configuration to activate it on the switch.
{master:0}[edit]
root# commit
17. When you’ve finished configuring the switch, exit configuration mode.
{master:0}[edit]
root# exit
{master:0}
root@name
Step 3: Keep Going
IN THIS SECTION
What’s Next? | 10
General Information | 11
Learn With Videos | 11
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?
ThenIf you want to
See Activate Junos OS Licenses in the
Juniper Licensing Guide
Download, activate, and manage your software licenses to unlock
additional features for your EX series switch
Browse through the EX3400 Switch
Hardware Guide
Find more in-depth information about installing your EX3400 series
switch
10

ThenIf you want to
Start with the Day One+ for Junos OS guideJump in and start configuring your EX Series switch with the Junos OS
CLI
Visit the Security Design CenterSee, automate, and protect your network with Juniper Security
Visit Juniper Networks Virtual Labs and
reserve your free sandbox. 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.
Get hands-on experience with the procedures covered in this guide
General Information
ThenIf you want to
Visit EX3400 Documentation in the Juniper Networks
TechLibrary
See all documentation available for the EX3400 switches
See Junos OS Release NotesStay up-to-date on new and changed features and known
and resolved issues
See Installing Software on EX Series SwitchesManage software upgrades on your EX Series switch
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.
ThenIf you want to
Watch the EX3400 Ethernet Switch Overview and
Deployment (WBT) video
View a Web-based training video which provides an
overview of the EX3400 and describes how to install and
deploy it
11

ThenIf you want to
See Learning with Juniper on Juniper Networks main
YouTube page
Get short and concise tips and instructions that provide
quick answers, clarity, and insight into specific features
and functions of Juniper technologies
Visit the Getting Started page on the Juniper Learning
Portal
View a list of the many free technical trainings we offer
at Juniper
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 © 2021
Juniper Networks, Inc. All rights reserved. Rev. 05, December 2021.
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