Juniper QFX5120 Series, QFX5120-32C-AFI, QFX5120-48Y-AFO2, QFX5120-48Y-AFI2, QFX5120-48Y-DC-AFO2 Hardware Manual
...
QFX5120 Switch Hardware Guide
Published
2019-10-15
Juniper Networks, Inc.
1133 Innovation Way
Sunnyvale, California 94089
USA
408-745-2000
www.juniper.net
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.
QFX5120 Switch Hardware Guide
Copyright © 2019 Juniper Networks, Inc. All rights reserved.
The information in this document is current as of the date on the title page.
ii
YEAR 2000 NOTICE
Juniper Networks hardware and software products are Year 2000 compliant. Junos OS has no known time-related
limitations through the year 2038. However, the NTP application is known to have some difficulty in the year 2036.
END USER LICENSE AGREEMENT
The Juniper Networks product that is the subject of this technical documentation consists of (or is intended for use with)
Juniper Networks software. Use of such software is subject to the terms and conditions of the End User License Agreement
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agree to the terms and conditions of that EULA.
Table of Contents
1
About the Documentation | xi
Documentation and Release Notes | xi
Using the Examples in This Manual | xi
Merging a Full Example | xii
Merging a Snippet | xiii
Documentation Conventions | xiii
Documentation Feedback | xvi
Requesting Technical Support | xvi
Self-Help Online Tools and Resources | xvii
Creating a Service Request with JTAC | xvii
iii
Overview
QFX5120 System Overview | 21
QFX5120 Switches Hardware Overview | 21
Benefits of the QFX5120 Switch | 22
QFX5120 Hardware | 22
System Software | 27
QFX5120 Power System | 27
QFX5120 Switch Models | 28
Identifying QFX5120 Switch Models | 30
Chassis Physical Specifications for QFX5120 Switches | 31
Field-Replaceable Units in QFX5120 Switches | 32
QFX5120 Chassis | 32
QFX5120 Cooling System | 33
QFX5120 Models with Front-to-Back Airflow | 33
QFX5120 Models with Back-to-Front Airflow | 34
Positioning the Switch | 36
QFX5120 Fan Module Status | 36
2
Management Port LEDs on QFX5120 Switches | 37
Network Port LEDs on QFX5120 Switches | 38
QFX5120 Cooling System | 41
QFX5120 Cooling System | 42
QFX5120 Models and Airflow Direction | 43
QFX5120 Models with Front-to-Back Airflow | 45
QFX5120 Models with Back-to-Front Airflow | 47
Positioning the Switch | 48
QFX5120 Fan Module Status | 49
QFX5120 Power System | 49
AC Power Supply in QFX5120 Switches | 50
AC Power Supply Specifications for QFX5120 Switches | 50
iv
AC Power Supply Airflow | 51
AC Power Supply Specifications for QFX5120 Switches | 52
AC Power Cord Specifications for QFX5120 Switches | 53
AC Power Supply LEDs in QFX5120 Switches | 55
DC Power Supply in QFX5120 Switches | 57
Characteristics of a DC Power Supply | 58
DC Power Supply Airflow | 59
QFX5120 DC Power Specifications | 60
DC Power Supply LEDs in QFX5120 Switches | 60
Site Planning, Preparation, and Specifications
Site Preparation Checklist for QFX5120 Switches | 65
QFX5120 Site Guidelines and Requirements | 66
Environmental Requirements and Specifications for QFX5120 Switches | 66
General Site Guidelines | 68
Site Electrical Wiring Guidelines | 68
Rack Requirements for QFX5120 Switches | 69
Cabinet Requirements for QFX5120 Switches | 70
Clearance Requirements for Airflow and Hardware Maintenance for QFX5120 Switches | 71
3
QFX5120 Network Cable and Transceiver Planning | 73
Pluggable Transceivers Supported on QFX5120 Switches | 73
SFP28 Direct Attach Copper Cables for QFX5120 Switches | 74
Cable Specifications | 75
Standards Supported by These Cables | 75
QSFP28 Direct Attach Copper Cables for QFX5120 Switches | 76
Cable Specifications | 76
Section | ?
Cable Specifications for QSFP+ and QSFP28 Transceivers on QFX5120 Switches | 77
Calculating the Fiber-Optic Cable Power Budget for QFX Series Switches | 78
Calculating the Fiber-Optic Cable Power Margin for QFX Series Switches | 79
QFX5120 Management Cable Specifications and Pinouts | 81
v
Console Port Connector Pinout Information | 81
RJ-45 Management Port Connector Pinout Information | 82
RJ-45 to DB-9 Serial Port Adapter Pinout Information | 83
QSFP+,QSFP28, SFP, SFP+, and SFP28 Port Connector Pinout Information | 83
Initial Installation and Configuration
Unpacking and Mounting the QFX5120 Switch | 91
Unpacking the Switch | 91
Parts Inventory (Packing List) for a QFX5120 Switch | 92
Registering Products—Mandatory for Validating SLAs | 93
Mounting a QFX5120 Switch on Four Posts of a Rack or Cabinet | 93
Connecting the QFX5120 to Power | 98
Connecting Earth Ground to a QFX5120 Switch | 98
Connecting AC Power to a QFX5120 Switch | 99
Connecting DC Power to a QFX5120 Switch | 101
Connecting the QFX5120 to the Network | 106
Installing a Transceiver | 106
Connecting a Fiber-Optic Cable | 109
Connecting the QFX5120 to External Devices | 110
4
5
Connecting a Device to a Network for Out-of-Band Management | 110
Connecting a Device to a Management Console by Using an RJ-45 Connector | 111
Configuring Junos OS on the QFX5120 | 112
QFX5120 Default Configuration | 113
Connecting and Configuring a QFX5120 Switch | 113
Maintaining Components
Maintaining the QFX5120 Cooling System | 121
Removing a Fan Module from a QFX5120 Switch | 121
Installing a Fan Module in a QFX5120 Switch | 122
Maintaining the QFX5120 Power System | 124
Removing Power Supply from a QFX5120 Switch | 124
vi
Connecting AC Power to a QFX5120 Switch | 126
Maintaining Transceivers | 129
Removing a Transceiver | 129
Removing a QSFP28 Transceiver | 132
Installing a Transceiver | 134
Installing a QSFP28 Transceiver | 136
Maintaining Fiber-Optic Cables | 138
Connecting a Fiber-Optic Cable | 138
Disconnecting a Fiber-Optic Cable | 139
Maintaining Fiber-Optic Cables | 140
Troubleshooting Hardware
Troubleshooting QFX5120 Components | 145
Understanding Alarms | 145
Interface Alarm Messages | 146
Creating an Emergency Boot Device | 147
Contacting Customer Support and Returning the Chassis or Components
6
7
Returning a QFX5120 Chassis or Components | 151
Returning a QFX5120 Switch or Component for Repair or Replacement | 151
Locating the Serial Number on a QFX5120 Switch or Component | 152
Listing the Switch and Components Details with the CLI | 152
Locating the Chassis Serial Number ID Label on a QFX5120 Switch | 152
Locating the Serial Number ID Labels on FRUs in a QFX5120 Switch | 153
Contacting Customer Support to Obtain Return Material Authorization | 154
Packing a QFX5120 Switch or Component for Shipping | 155
Packing a QFX5120 Switch for Shipping | 155
Packing QFX5120 Switch Components for Shipping | 157
Safety and Compliance Information
vii
General Safety Guidelines and Warnings | 161
Definitions of Safety Warning Levels | 162
Qualified Personnel Warning | 164
Warning Statement for Norway and Sweden | 165
Fire Safety Requirements | 165
Fire Suppression | 165
Fire Suppression Equipment | 165
Installation Instructions Warning | 167
Chassis and Component Lifting Guidelines | 167
Restricted Access Warning | 169
Ramp Warning | 171
Rack-Mounting and Cabinet-Mounting Warnings | 171
Grounded Equipment Warning | 176
Radiation from Open Port Apertures Warning | 177
Laser and LED Safety Guidelines and Warnings | 178
General Laser Safety Guidelines | 178
Class 1 Laser Product Warning | 179
Class 1 LED Product Warning | 180
Laser Beam Warning | 181
Maintenance and Operational Safety Guidelines and Warnings | 181
Battery Handling Warning | 183
Jewelry Removal Warning | 184
Lightning Activity Warning | 186
Operating Temperature Warning | 187
Product Disposal Warning | 189
viii
General Electrical Safety Guidelines and Warnings | 190
Action to Take After an Electrical Accident | 191
Prevention of Electrostatic Discharge Damage | 191
AC Power Electrical Safety Guidelines | 193
AC Power Disconnection Warning | 194
DC Power Electrical Safety Guidelines | 195
DC Power Disconnection Warning | 196
DC Power Grounding Requirements and Warning | 198
DC Power Wiring Sequence Warning | 200
DC Power Wiring Terminations Warning | 203
Multiple Power Supplies Disconnection Warning | 206
TN Power Warning | 207
Agency Approvals for QFX5120 Switches | 207
Compliance Statements for EMC Requirements for the QFX Series | 209
QFX 5120 | 209
Canada | 210
European Community | 211
Israel | 211
Japan | 211
Korea | 212
Tawain | 212
United States | 212
Nonregulatory Environmental Standards | 213
ix
About the Documentation
IN THIS SECTION
Documentation and Release Notes | xi
Using the Examples in This Manual | xi
Documentation Conventions | xiii
Documentation Feedback | xvi
Requesting Technical Support | xvi
Use this guide to install hardware and perform initial software configuration, routine maintenance, and
troubleshooting for the QFX5120 switch. After completing the installation and basic configuration
procedures covered in this guide, refer to the Junos OS documentation for information about further
software configuration.
xi
Documentation and Release Notes
To obtain the most current version of all Juniper Networks®technical documentation, see the product
documentation page on the Juniper Networks website at https://www.juniper.net/documentation/.
If the information in the latest release notes differs from the information in the documentation, follow the
product Release Notes.
Juniper Networks Books publishes books by Juniper Networks engineers and subject matter experts.
These books go beyond the technical documentation to explore the nuances of network architecture,
deployment, and administration. The current list can be viewed at https://www.juniper.net/books.
Using the Examples in This Manual
If you want to use the examples in this manual, you can use the load merge or the load merge relative
command. These commands cause the software to merge the incoming configuration into the current
candidate configuration. The example does not become active until you commit the candidate configuration.
If the example configuration contains the top level of the hierarchy (or multiple hierarchies), the example
is a full example. In this case, use the load merge command.
If the example configuration does not start at the top level of the hierarchy, the example is a snippet. In
this case, use the load merge relative command. These procedures are described in the following sections.
Merging a Full Example
To merge a full example, follow these steps:
1. From the HTML or PDF version of the manual, copy a configuration example into a text file, save the
file with a name, and copy the file to a directory on your routing platform.
For example, copy the following configuration to a file and name the file ex-script.conf. Copy the
ex-script.conf file to the /var/tmp directory on your routing platform.
system {
scripts {
commit {
file ex-script.xsl;
}
}
}
interfaces {
fxp0 {
disable;
unit 0 {
family inet {
address 10.0.0.1/24;
}
}
}
}
xii
2. Merge the contents of the file into your routing platform configuration by issuing the load merge
configuration mode command:
[edit]
user@host# load merge /var/tmp/ex-script.conf
load complete
Merging a Snippet
To merge a snippet, follow these steps:
1. From the HTML or PDF version of the manual, copy a configuration snippet into a text file, save the
file with a name, and copy the file to a directory on your routing platform.
For example, copy the following snippet to a file and name the file ex-script-snippet.conf. Copy the
ex-script-snippet.conf file to the /var/tmp directory on your routing platform.
commit {
file ex-script-snippet.xsl; }
2. Move to the hierarchy level that is relevant for this snippet by issuing the following configuration mode
command:
[edit]
user@host# edit system scripts
[edit system scripts]
xiii
3. Merge the contents of the file into your routing platform configuration by issuing the load merge
relative configuration mode command:
[edit system scripts]
user@host# load merge relative /var/tmp/ex-script-snippet.conf
load complete
For more information about the load command, see CLI Explorer.
Documentation Conventions
Table 1 on page xiv defines notice icons used in this guide.
Table 1: Notice Icons
xiv
DescriptionMeaningIcon
Indicates important features or instructions.Informational note
Caution
Indicates a situation that might result in loss of data or hardware
damage.
Alerts you to the risk of personal injury or death.Warning
Alerts you to the risk of personal injury from a laser.Laser warning
Indicates helpful information.Tip
Alerts you to a recommended use or implementation.Best practice
Table 2 on page xiv defines the text and syntax conventions used in this guide.
Table 2: Text and Syntax Conventions
ExamplesDescriptionConvention
Fixed-width text like this
Italic text like this
Represents text that you type.Bold text like this
Represents output that appears on
the terminal screen.
Introduces or emphasizes important
•
new terms.
Identifies guide names.
•
Identifies RFC and Internet draft
•
titles.
To enter configuration mode, type
the configure command:
user@host> configure
user@host> show chassis alarms
No alarms currently active
A policy term is a named structure
•
that defines match conditions and
actions.
Junos OS CLI User Guide
•
RFC 1997, BGP Communities
•
Attribute
Table 2: Text and Syntax Conventions (continued)
xv
ExamplesDescriptionConvention
Italic text like this
Text like this
< > (angle brackets)
| (pipe symbol)
Represents variables (options for
which you substitute a value) in
commands or configuration
statements.
Represents names of configuration
statements, commands, files, and
directories; configuration hierarchy
levels; or labels on routing platform
components.
variables.
Indicates a choice between the
mutually exclusive keywords or
variables on either side of the symbol.
The set of choices is often enclosed
in parentheses for clarity.
Configure the machine’s domain
name:
[edit]
root@# set system domain-name
domain-name
To configure a stub area, include
•
the stub statement at the [edit
protocols ospf area area-id]
hierarchy level.
The console port is labeled
•
CONSOLE.
stub <default-metric metric>;Encloses optional keywords or
broadcast | multicast
(string1 | string2 | string3)
# (pound sign)
[ ] (square brackets)
Indention and braces ( { } )
; (semicolon)
GUI Conventions
Indicates a comment specified on the
same line as the configuration
statement to which it applies.
Encloses a variable for which you can
substitute one or more values.
Identifies a level in the configuration
hierarchy.
Identifies a leaf statement at a
configuration hierarchy level.
rsvp { # Required for dynamic MPLS
only
community name members [
community-ids ]
[edit]
routing-options {
static {
route default {
nexthop address;
retain;
}
}
}
Table 2: Text and Syntax Conventions (continued)
xvi
ExamplesDescriptionConvention
Bold text like this
> (bold right angle bracket)
Represents graphical user interface
(GUI) items you click or select.
Separates levels in a hierarchy of
menu selections.
In the Logical Interfaces box, select
•
All Interfaces.
To cancel the configuration, click
•
Cancel.
In the configuration editor hierarchy,
select Protocols>Ospf.
Documentation Feedback
We encourage you to provide feedback so that we can improve our documentation. You can use either
of the following methods:
Online feedback system—Click TechLibrary Feedback, on the lower right of any page on the Juniper
•
Networks TechLibrary site, and do one of the following:
Click the thumbs-up icon if the information on the page was helpful to you.
•
Click the thumbs-down icon if the information on the page was not helpful to you or if you have
•
suggestions for improvement, and use the pop-up form to provide feedback.
E-mail—Send your comments to techpubs-comments@juniper.net. Include the document or topic name,
•
URL or page number, and software version (if applicable).
Requesting Technical Support
Technical product support is available through the Juniper Networks Technical Assistance Center (JTAC).
If you are a customer with an active Juniper Care or Partner Support Services support contract, or are
covered under warranty, and need post-sales technical support, you can access our tools and resources
online or open a case with JTAC.
JTAC policies—For a complete understanding of our JTAC procedures and policies, review the JTAC User
•
Guide located at https://www.juniper.net/us/en/local/pdf/resource-guides/7100059-en.pdf.
Product warranties—For product warranty information, visit https://www.juniper.net/support/warranty/.
•
JTAC hours of operation—The JTAC centers have resources available 24 hours a day, 7 days a week,
•
365 days a year.
Self-Help Online Tools and Resources
For quick and easy problem resolution, Juniper Networks has designed an online self-service portal called
the Customer Support Center (CSC) that provides you with the following features:
Find CSC offerings: https://www.juniper.net/customers/support/
•
Search for known bugs: https://prsearch.juniper.net/
•
xvii
Find product documentation: https://www.juniper.net/documentation/
•
Find solutions and answer questions using our Knowledge Base: https://kb.juniper.net/
•
Download the latest versions of software and review release notes:
•
https://www.juniper.net/customers/csc/software/
Search technical bulletins for relevant hardware and software notifications:
•
https://kb.juniper.net/InfoCenter/
Join and participate in the Juniper Networks Community Forum:
•
https://www.juniper.net/company/communities/
Create a service request online: https://myjuniper.juniper.net
•
To verify service entitlement by product serial number, use our Serial Number Entitlement (SNE) Tool:
https://entitlementsearch.juniper.net/entitlementsearch/
Creating a Service Request with JTAC
You can create a service request with JTAC on the Web or by telephone.
Visit https://myjuniper.juniper.net.
•
Call 1-888-314-JTAC (1-888-314-5822 toll-free in the USA, Canada, and Mexico).
•
For international or direct-dial options in countries without toll-free numbers, see
https://support.juniper.net/support/requesting-support/.
1
CHAPTER
Overview
QFX5120 System Overview | 21
QFX5120 Chassis | 32
QFX5120 Cooling System | 41
QFX5120 Power System | 49
QFX5120 System Overview
IN THIS SECTION
QFX5120 Switches Hardware Overview | 21
QFX5120 Switch Models | 28
Identifying QFX5120 Switch Models | 30
Chassis Physical Specifications for QFX5120 Switches | 31
Field-Replaceable Units in QFX5120 Switches | 32
QFX5120 Switches Hardware Overview
21
IN THIS SECTION
Benefits of the QFX5120 Switch | 22
QFX5120 Hardware | 22
System Software | 27
QFX5120 Power System | 27
The QFX5120 switch delivers low latency, rich Layer 2 and Layer 3 features, and offer ideal data center
top-of-rack and aggregation switches 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
includes native 25-Gigabit Ethernet (fiber only) and 100-Gigabit Ethernet fixed-configuration options with
rich L2, L3, Ethernet VPN (EVPN), and MPLS features. In addition to a high-throughput Packet Forwarding
Engine (PFE), the performance of the QFX5120 control plane is with a powerful 2.2 GHz quad-core Intel
CPU with 16 GB of memory and 64 GB SSD storage.
The QFX5120 line of switches includes two compact, 1-U platforms that provide wire-speed packet
performance, very low latency, and a rich set of Junos OS features. The native 25-GbE with 100-GbE
uplink ports on QFX5120-48Y, combined with 32 ports of 100-GbE on the 1-Unit QFX5120-32C, also
make the QFX5120 switch ideally suited for spine-and-leaf network deployments.
Two variants of the QFX5120 switches are available— 32-port and 48-port switches, with AC and DC
power supplies and with different airflow directions. The QFX5120-48Y switch offers two models featuring
AC power supplies with front-to-back or back-to-front airflow, and two models featuring DC power supplies
with front-to-back or back-to-front airflow. The QFX5120-32C switch offers two models featuring AC
power supplies with front-to-back or back-to-front airflow.
NOTE: The QFX5120-32C switch currently supports only AC power supply.
Benefits of the QFX5120 Switch
EVPN-VXLAN campus architecture—The QFX5120 switch extends EVPN-VXLAN beyond the data center,
thus providing customers the building blocks for an enterprise-wide fabric. The EVPN-VXLAN protocol is
suitable for campus architectures because it provides Layer 3 transport with Layer 2 capabilities that allow
enterprises to evolve, while also taking into consideration legacy applications. QFX5120 also offers core
aggregation capabilities aimed at enterprises with campus networks that want a compact and highly scalable
solution.
22
Industry-leading 25-Gbps and 100-Gbps wire speeds: The QFX5120 Switch offers industry-leading high
density 25-Gbps and 100-Gbps wire speeds that support 48 ports at 100-Gbps or 48 ports at 25-Gbps,
and 8 100-Gbps uplink ports.
Common data center protocols: The QFX5120 also uses data center network protocols. The network
protocols used in the QFX5120 are the Ethernet VPN (EVPN) and the Virtual Extensible LAN (VXLAN).
Engineers typically use it with the Border Gateway Protocol and the VXLAN encapsulation protocol which
creates an overlay network on an existing Layer 3 infrastructure. As a result, the same engineering team
can manage the data center and the campus.
QFX5120 Hardware
The QFX5120 delivers low-latency, native 25-GbE, 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.
Two variants of QFX5120 switches are available, QFX5120-32C and QFX5120-48Y.
Figure 1 on page 22 shows the front view of the QFX5120-32C switch.
Figure 1: QFX5120-32C - Front View
Figure 2 on page 23 shows the rear view of the QFX5120-32C switch.
Figure 2: QFX5120-32C - Rear View
Figure 3 on page 23 shows the front view of the QFX5120-48Y switch.
Figure 3: QFX5120-48Y - Front View
Figure 4 on page 23 shows the front view of the QFX5120-48Y switch.
23
Figure 4: QFX5120-48Y - Rear View
The QFX5120-32C offers 32 quad SFP28 (QSFP28) or 32 quad SFP+ (QSFP+) ports. Each of the 100-GbE
ports can also be configured as 4x25GbE ports using breakout cables, enabling the QFX5120-32C to also
be used as a high-density 25-GbE top-of-rack switch.
The QFX5120-48Y switch is a 25-Gigabit Ethernet small form-factor pluggable (SFP28) switch with 48
SFP28 ports and eight 100-Gbps quad small form-factor pluggable (QSFP28) ports. Each SFP28 port can
operate as a native 25-Gigabit Ethernet port, 10-Gigabit Ethernet port, and can act as a 1-Gbps port based
on the transceivers inserted. Each of the eight uplink ports can operate as either 100-G or 40-G based on
the optics used.
You can use breakout cables to configure the ports as per your requirement in QFX5120-32C and
QFX5120-48Y switches.
You can configure a 40-Gigabit Ethernet port into 4 independent 10-Gigabit Ethernet ports using four
•
10-Gigabit breakout cables.
You can configure a 100-Gigabit Ethernet port into 2 independent 50-Gigabit Ethernet ports using two
•
50-Gigabit breakout cables.
You can configure a 100-Gigabit Ethernet port into 4 independent 25-Gigabit Ethernet ports using four
•
25-Gigabit breakout cables.
NOTE:
g051100
432
6 5 37
1
QFX5120-32C
The SFP-T transceivers are supported only on top or bottom ports, upto a maximum of 24 ports.
•
The SFP28 speed can be applied only for individual quads (four ports). The speed cannot be
•
configured for a single port.
The native 25-G ports available from port 0 through port 47 and can operate in 1-G, 10-G, or
•
25-G speeds based on the configuration set at the quad level. The QFX-512048Y switch offers
10-G interface support by default. You need to manually configure 1-G and 25-G interface speeds
in order to support 1-G and 25-G optics when required. To support 10-G speed for the same
port slot, you need to delete the 1-G/ 25-G port configuration that was set earlier.
For QFX5120-32C, you cannot configure four independent 10-Gigabit ports or four independent
•
25-Gigabit ports using breakout cables on port 31. However you can configure two independent
50-G ports on this port.
Both the QFX5120-32C and QFX5120-48Y offer :
24
A 2.2 GHz quad-core Intel CPU with 16 GB memory and 64 GB SSD storage
•
Feature-rich automation capabilities with support for Python and Zero Touch Provisioning (ZTP)
•
Support for Virtual Extensible LAN (VXLAN) as an L2 or L3 gateway and Open vSwitch Database (OVSDB)
•
protocol as an L2 gateway
Advanced Junos OS features such as EVPN, BGP add-path, MPLS, L3 VPN, and IPv6 6PE
•
Figure 5 on page 24 show the front panel of a QFX5120-32C Switch.
Figure 5: Front Panel of a QFX5120-32C Switch
5—1— Console portQSFP28 ports
6—2— Chassis status LEDManagement port
7—3— Reset buttonSFP+ ports
4—USB port
and Figure 6 on page 25 shows the front panel of a QFX5120-48Y switch.
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1 2
g051102
1
2 1
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1 3 4
5 6
2
12 11 10 89 7 7
Figure 6: Front Panel of a QFX5120-48Y Switch
2—1— QSFP portsSFP ports
Figure 8 on page 25 shows the rear panel of a QFX5120-32C switch with AC power supplies.
Figure 7: Rear Panel of a QFX5120-32C Switch with AC Power Supplies
25
2—1— Fan modulesAC power supply in slot 0, AC power supply in slot
1
Figure 7 on page 25 shows the rear panel of a QFX5120-48Y switch with AC Power Supplies.
Figure 8: Components on the Rear Panel of a QFX5120-48Y Switch with AC Power Supplies
7—1— Power Supply LEDsChassis Status LEDs
8—2— Fan Module LEDsConsole Port
9—3— RJ-45 Management Port (C0)RJ-45 Management Port (C1)
10—4— Reset ButtonESD Point
11—5— USB PortFan Module
12—6— CLEI LabelPower Supplies
Figure 9 on page 26 shows the rear view of a QFX5120-48Y switch with DC Power Supplies.
g022506
IN
IN
Figure 9: Rear Panel of a QFX5120-48Y Switch with DC Power Supplies
Figure 10 on page 26 shows the components on the rear panel of a QFX5120-48Y switch with DC Power
Supplies.
Figure 10: Components on the Rear Panel of a QFX5120-48Y Switch with DC Power Supplies
26
7—1— Power Supply LEDsChassis Status LEDs
8—2— Fan Module LEDsConsole Port
9—3— RJ-45 Management Port (C0)RJ-45 Management Port (C1)
10—4— Reset ButtonESD Point
11—5— USB PortFan module
12—6— CLEI LabelPower Supplies
Table 3 on page 26 lists the QFX5120 switch models and their components.
Table 3: Components in QFX5120 Switches
Fan Modules Shipped by
DefaultBuilt-in PortsSwitch Models
QFX5120-32C-AFO
32x100G QSFP28 ports
and 2x10G SFP+ ports
Six fan modules; each with
an AIR OUT (AFO) label.
Power Supply Shipped by
Default
Two 650 W AC power
supplies (1+1 redundancy).
Table 3: Components in QFX5120 Switches (continued)
27
QFX5120-32C-AFI
QFX5120-48Y-AFO2
QFX5120-48Y-AFI2
QFX5120-48Y-DC-AFO2
QFX5120-48Y-DC-AFI2
System Software
32x100G QSFP28 ports
and 2x10G SFP+ ports
48x25G SFP28 ports and
8x100G QSFP28 ports
48x25G SFP28 ports and
8x100G QSFP28 ports
48x25G SFP28 ports and
8x100G QSFP28 ports
48x25G SFP28 ports and
8x100G QSFP28 ports
Fan Modules Shipped by
DefaultBuilt-in PortsSwitch Models
Six fan modules; each with
an AIR IN (AFI) label.
Five fan modules; each with
an AIR OUT (AFO) label.
Five fan modules; each with
an AIR IN (AFI) label.
Five fan modules; each with
an AIR OUT (AFO) label.
Five fan modules; each with
an AIR IN (AFI) label.
Power Supply Shipped by
Default
Two 650 W AC power
supplies (1+1 redundancy).
Two 650 W AC power
supplies (1+1 redundancy).
Two 650 W AC power
supplies (1+1 redundancy).
Two 650 W DC power
supplies (1+1 redundancy).
Two 650 W DC power
supplies (1+1 redundancy).
Juniper Networks QFX Series Ethernet Switches run Junos OS™ operating system (Junos OS), which
provides Layer 2 and Layer 3 switching, routing, and security services.
QFX5120 Power System
QFX5120-48Y switches support two AC or DC power supplies with different airflow directions. Power
supplies for the QFX5120 switch are fully redundant, load-sharing, and hot-removable and hot-insertable
FRUs. The QFX5120 switch models are shipped with two power supplies pre-installed in the rear panel
of the chassis.
CAUTION: Do not mix:
AC and DC power supplies in the same chassis.
•
Power supplies with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the
•
same chassis.
Power supplies and fan modules with different airflow labels (AIR IN (AFI) and AIR
•
OUT (AFO)) in the same chassis.
CAUTION: Verify that the airflow direction on the power supply handle matches the
direction of airflow in the chassis. Ensure that each power supply you install in the chassis
has the same airflow direction. If you install power supplies with two different airflow
directions, Junos OS raises an alarm. If you need to convert the airflow pattern on a
chassis, you must replace all the fans and power supplies at one time to use the new
direction.
QFX5120 Switch Models
The QFX5120 switch is available with 32 or 48 ports and support AC and DC power supplies depending
on the switch model. All models of the QFX5120 ship with two power supplies and five fans installed by
default.Table 4 on page 28 lists the components shipped with QFX5120 switch models.
28
Table 4: QFX5120 Switch Models and Shipped Components
Product
Numbers
QFX5120-32C-AFO
32 QSFP28
QFX5120-32C-AFI
32 QSFP28
AC2 SFP+
AC2 SFP+
AirflowPower SupplyPorts
Front-to-back—air intake
to cool the chassis is
through the vents on the
front panel of the chassis,
and hot air exhausts
through the vents on the
rear panel of the chassis.
Back-to-front—air intake
to cool the chassis is
through the vents on the
rear panel of the chassis,
and hot air exhausts
through the vents on the
front panel of the chassis.
Table 4: QFX5120 Switch Models and Shipped Components (continued)
Product
Numbers
29
AirflowPower SupplyPorts
QFX5120-48Y-AFO2
QFX5120-48Y-AFI2
QFX5120-48Y-DC-AFO2
8 QSFP28
8 QSFP28
8 QSFP28
AC48 SFP28
AC48 SFP28
DC48 SFP28
Front-to-back—air intake
to cool the chassis is
through the vents on the
front panel of the chassis,
and hot air exhausts
through the vents on the
rear panel of the chassis.
Back-to-front—air intake
to cool the chassis is
through the vents on the
rear panel of the chassis,
and hot air exhausts
through the vents on the
front panel of the chassis.
Front-to-back—air intake
to cool the chassis is
through the vents on the
front panel of the chassis,
and hot air exhausts
through the vents on the
rear panel of the chassis.
QFX5120-48Y-DC-AFI2
CAUTION: Mixing different types (AC and DC) of power supplies in the same chassis is
not supported. Mixing different airflow modules in the same chassis is not supported.
8 QSFP28
DC48 SFP28
Back-to-front—air intake
to cool the chassis is
through the vents on the
rear panel of the chassis,
and hot air exhausts
through the vents on the
front panel of the chassis.
Identifying QFX5120 Switch Models
Purpose
Identify the model number of your QFX5120 switch.
Action
Check the value of the FRU Model Number field in the Routing Engine section in the output of the show
chassis hardware extensive CLI command.
user@switch> show chassis hardware extensive
....
Routing Engine 1 REV D 650-044930 PD3113060024 QFX5120-48Y
Jedec Code: 0x7fb0 EEPROM Version: 0x02
P/N: 650-044930 S/N: PD3113060024
Assembly ID: 0x0b5e Assembly Version: 03.19
Date: 02-19-2013 Assembly Flags: 0x00
Version: REV D CLEI Code:
ID: QFX5120-48Y FRU Model Number: QFX5120-48Y-AFO2
....
30
The model number of your switch is one of the following:
QFX5120-32C-AFO
•
QFX5120-32C-AFI
•
QFX5120-48Y-AFO2
•
QFX5120-48Y-AFI2
•
QFX5120-48Y-DC-AFO2
•
QFX5120-48Y-DC-AFI2
•
In the sample output, the switch model is QFX5120-48Y-AFO2.
Meaning
In QFX5120 switch model numbers:
The 48Y in the model number indicates that the number of network ports on the switch:
•
AFI indicates that the switch is shipped with two fan modules and a power supply, each bearing an AIR
•
IN (AFI) label. Switches that do not have AFI in their model numbers ship with two fan modules and a
power supply, each bearing an AIR OUT (AFO) label.
The labels on the fan modules and the power supplies indicate the direction of airflow they provide
within the chassis when installed in the switch. AIR IN (AFI) labels indicate back-to-front airflow, and
AIR OUT (AFO) labels indicate front-to-back airflow.
The DC in the model number indicates that the switch model works on DC power supply. Switches that
•
do not have DC in their model numbers work on AC power supply.
Chassis Physical Specifications for QFX5120 Switches
The QFX5120 switch chassis is a rigid sheet-metal structure that houses all components of the switch.
Table 5 on page 31 shows the physical specifications of the QFX5120-32C switch.
Table 5: Physical Specifications of the QFX5120-32C Switch Chassis
ValueDescription
31
1.7 in. (43.25 mm)Chassis height
17.26 in. (438.4 mm)Chassis width
20.27 in. (515.0 mm) excluding fan and power supply handlesChassis depth
21.12 lbs (9.12 kg) with two power supplies and fans installedWeight
Table 6 on page 31 shows the physical specifications of the QFX5120-32C switch chassis.
Table 6: Physical Specifications of the QFX5120-48Y Switch Chassis
ValueDescription
1.72 in. (4.37 cm)Chassis height
Chassis width
17.36 in. (44.09 cm)
•
The outer edges of the front-mounting brackets extend the width to 19 in.
•
(48.2 cm)
20.48 in. (52.02 cm) excluding fan and power supply handlesChassis depth
23.69 lbs (10.75 kg) with two power supplies and fans installedWeight
Field-Replaceable Units in QFX5120 Switches
Field-replaceable units (FRUs) are components that you can replace at your site. The FRUs in QFX5120
switches are hot-removable and hot-insertable: You can remove and replace them without powering off
the switch. The FRUs in QFX5120 switches are:
Power supplies
•
Fan modules
•
Transceivers
•
NOTE: Transceivers are not part of the shipping configuration. If you want to purchase any of
these components, you must order them separately.
NOTE: If you have a Juniper J-Care service contract, register any addition, change, or upgrade of
hardware components at https://www.juniper.net/customers/support/tools/updateinstallbase/.
Failure to do so can result in significant delays if you need replacement parts. This note does not
apply if you replace existing components with the same type of component.
32
QFX5120 Chassis
IN THIS SECTION
QFX5120 Cooling System | 33
Management Port LEDs on QFX5120 Switches | 37
Network Port LEDs on QFX5120 Switches | 38
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