Juniper QFX5120 Hardware Guide

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QFX5120 Switch Hardware Guide

Published

2021-02-22

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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

The information in this document is current as of the date on the title page.

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 (“EULA”) posted at https://support.juniper.net/support/eula/. By downloading, installing or using such software, you agree to the terms and conditions of that EULA.

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About the Documentation | x

Documentation and Release Notes | x

Using the Examples in This Manual | x

Merging a Full Example | xi

Merging a Snippet | xii

Documentation Conventions | xii

Documentation Feedback | xv

Requesting Technical Support | xv

Self-Help Online Tools and Resources | xvi

Creating a Service Request with JTAC | xvi

iii

Overview

QFX5120 System Overview | 18

QFX5120 Switches Hardware Overview | 18

Benefits of the QFX5120 Switch | 19

System Software and Hardware and Software Features | 19

Channelization in QFX5120 Switches | 20

Components on the Front and Rear Panels | 21

Virtual Chassis | 31

QFX5120 Cooling System | 32

QFX5120 Power System | 32

QFX5120 Switch Models and Variants | 33

QFX5120 Switch Hardware and CLI Terminology Mapping | 35

QFX5120 Chassis | 41

Chassis Physical Specifications for QFX5120 Switches | 41

Field-Replaceable Units in QFX5120 Switches | 42

Chassis Status LEDs in QFX5120 Switches | 43

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LEDs on the Management Port on QFX5120 Switches | 46

Network Port LEDs on QFX5120 Switches | 48

Network Port LEDs on QFX5120-32C Switches | 48

Network Port LEDs on QFX5120-48T Switches | 50

Network Port LEDs on QFX5120-48Y Switches | 52

Network Port LEDs on QFX5120-48YM Switches | 54

QFX5120 Cooling System | 56

Fan Modules for QFX5120 Switches | 56

QFX5120 Models and Airflow Direction | 58

QFX5120 Models with Front-to-Back Airflow | 61

QFX5120 Models with Back-to-Front Airflow | 63

How to Position the Switch | 65

QFX5120 Fan Module Status | 66

QFX5120 Power System | 67

AC Power Supply in QFX5120 Switches | 67

Characteristics of the AC Power Supply for QFX5120 Switches | 68

AC Power Supply Airflow | 71

Power Supply Specifications for AC Power Supplies for QFX5120 Switches | 72

Specifications of the Power Cord for AC Power Supplies for QFX5120 Switches | 74

LEDs on the AC Power Supplies Used in QFX5120 Switches | 76

DC Power Supply in QFX5120 Switches | 79

Characteristics of the DC Power Supply | 79

DC Power Supply Airflow | 83

Power Supply Specifications for DC Power Supplies for QFX5120 Switches | 84

LEDs on the DC Power Supplies Used in QFX5120 Switches | 86

High-Voltage Power Supply for QFX5120-48T Switches | 88

Characteristics of the High-Voltage Power Supply for QFX5120-48T Switches | 89

High-Voltage Power Supply Airflow | 90

Power Supply Specifications for High-Voltage Power Supplies for QFX5120-48T

switches | 91

Specifications of the Power Cord for High-Voltage Power Supply for QFX5120-48T

Switches | 92

LEDs on the High-Voltage Power Supply Used in QFX5120-48T Switches | 96

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Site Planning, Preparation, and Specifications

Site Preparation Checklist for QFX5120 Switches | 99

QFX5120 Site Guidelines and Requirements | 100

Environmental Requirements and Specifications for QFX5120 Switches | 101

General Site Guidelines | 102

Site Electrical Wiring Guidelines | 102

Rack Requirements for QFX5120 Switches | 103

Cabinet Requirements for QFX5120 Switches | 104

Clearance Requirements for Airflow and Hardware Maintenance for QFX5120 Switches | 105

QFX5120 Network Cable and Transceiver Planning | 108

Pluggable Transceivers and Direct Attach Cables Supported on QFX5120 Switches | 108

Cable Specifications for QSFP+ and QSFP28 Transceivers on QFX5120 Switches | 109

How to Calculate the Fiber-Optic Cable Power Budget for QFX Series Switches | 111

How to Calculate the Fiber-Optic Cable Power Margin for QFX Series Switches | 112

QFX5120 Management Cable Specifications and Pinouts | 113

Console Port Connector Pinout Information | 114

RJ-45 Management Port Connector Pinout Information | 115

RJ-45 to DB-9 Serial Port Adapter Pinout Information | 115

RJ-45 Port, SFP Port, SFP+ Port, QSFP+ Port, and QSFP28 Port Connector Pinout

Information | 116

Initial Installation and Configuration

Unpack and Mount the QFX5120 Switch | 123

Unpack the QFX5120 Switch | 123

Parts Inventory (Packing List) for a QFX5120 Switch | 124

Mount a QFX5120-32C Switch on a Rack or Cabinet | 126

Mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM Switch Flush with the Front Posts

of a Rack or Cabinet | 129

Mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM Switch in a Recessed Position

from the Front Posts of a Rack or Cabinet | 134

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Mount a QFX5120-48YM Switch on a Two-Post Rack | 140

Connect the QFX5120 to Power | 142

Connect the QFX5120 Switch to Earth Ground | 142

Connect Power to an AC-Powered QFX5120 Switch | 148

Connect Power to a DC-Powered QFX5120 Switch | 151

Connect Power to a QFX5120-48T Switch Powered by a High-Voltage Power Supply | 156

Connect the QFX5120 to the Network | 159

Install a Transceiver | 159

Install a QSFP28 Transceiver | 162

Connect a Fiber-Optic Cable | 164

Connect the QFX5120 to External Devices | 165

Connect a Device to a Network for Out-of-Band Management | 165

Connect a Device to a Management Console Using an RJ-45 Connector | 166

Connecting 1-PPS and 10-MHz Measurement Devices to the QFX5120 Switch | 167

Configure Junos OS on the QFX5120 | 168

QFX5120 Default Configuration | 168

Connect and Configure a QFX5120 Switch | 169

Maintaining Components

Maintain the QFX5120 Cooling System | 176

Remove a Fan Module from a QFX5120 Switch | 176

Install a Fan Module in a QFX5120 Switch | 178

Maintain the QFX5120 Power System | 180

Remove a Power Supply from a QFX5120 Switch | 181

Install a Power Supply in a QFX5120 Switch | 184

Maintain Transceivers | 187

Remove a Transceiver | 187

Remove a QSFP28 Transceiver | 190

Install a Transceiver | 192

Install a QSFP28 Transceiver | 194

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Maintain Fiber-Optic Cables | 196

Connect a Fiber-Optic Cable | 196

Disconnect a Fiber-Optic Cable | 197

How to Handle Fiber-Optic Cables | 198

Troubleshooting Hardware

Troubleshoot QFX5120 Components | 201

Alarm Types and Severity Levels | 201

Interface Alarm Messages | 202

Creating an Emergency Boot Device for QFX Series Switches | 203

Chassis Component Alarm Conditions on QFX5120 Switches | 204

Contacting Customer Support and Returning the Chassis or Components

Return a QFX5120 Chassis or Components | 208

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How to Return a QFX5120 Switch or Component for Repair or Replacement | 208

Locate the Serial Number on a QFX5120 Switch or Component | 209

List the Switch and Components Details with the CLI | 209

Locate the Chassis Serial Number ID Label on a QFX5120 Switch | 210

Locate the Serial Number ID Labels on FRUs in a QFX5120 Switch | 211

Contact Customer Support to Obtain Return Material Authorization | 217

Pack a QFX5120 Switch or Component for Shipping | 218

Pack a QFX5120 Switch for Shipping | 218

Pack QFX5120 Switch Components for Shipping | 220

Safety and Compliance Information

General Safety Guidelines and Warnings | 223

Definitions of Safety Warning Levels | 224

Qualified Personnel Warning | 227

Warning Statement for Norway and Sweden | 228

Fire Safety Requirements | 228

Fire Suppression | 228

Fire Suppression Equipment | 228

Installation Instructions Warning | 230

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Chassis and Component Lifting Guidelines | 230

Restricted Access Warning | 232

Ramp Warning | 234

Rack-Mounting and Cabinet-Mounting Warnings | 235

Grounded Equipment Warning | 241

Radiation from Open Port Apertures Warning | 242

Laser and LED Safety Guidelines and Warnings | 243

General Laser Safety Guidelines | 243

Class 1 Laser Product Warning | 244

Class 1 LED Product Warning | 245

Laser Beam Warning | 246

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Maintenance and Operational Safety Guidelines and Warnings | 246

Battery Handling Warning | 248

Jewelry Removal Warning | 249

Lightning Activity Warning | 251

Operating Temperature Warning | 252

Product Disposal Warning | 254

General Electrical Safety Guidelines and Warnings | 255

Action to Take After an Electrical Accident | 256

Prevention of Electrostatic Discharge Damage | 257

AC Power Electrical Safety Guidelines | 258

AC Power Disconnection Warning | 260

DC Power Electrical Safety Guidelines | 261

DC Power Disconnection Warning | 262

DC Power Grounding Requirements and Warning | 264

DC Power Wiring Sequence Warning | 266

DC Power Wiring Terminations Warning | 269

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Multiple Power Supplies Disconnection Warning | 272

TN Power Warning | 273

Agency Approvals for QFX5120 Switches | 273

Compliance Statements for EMC Requirements for the QFX Series | 275

Canada | 275

European Community | 276

Israel | 276

Japan | 277

Korea | 277

Taiwan | 277

United States | 278

Nonregulatory Environmental Standards | 278

Restriction of Hazardous Substances (RoHS) Directive Compliance | 279

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About the Documentation

IN THIS SECTION

Documentation and Release Notes | x

Using the Examples in This Manual | x

Documentation Conventions | xii

Documentation Feedback | xv

Requesting Technical Support | xv

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.

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.

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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;

}

} }

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

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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]

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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 xiii defines notice icons used in this guide.

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Table 1: Notice Icons

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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 xiii 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

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Table 2: Text and Syntax Conventions (continued)

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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;

}

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Table 2: Text and Syntax Conventions (continued)

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

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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/

•

xvi

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/.

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CHAPTER

Overview

QFX5120 System Overview | 18

QFX5120 Chassis | 41

QFX5120 Cooling System | 56

QFX5120 Power System | 67

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QFX5120 System Overview

IN THIS SECTION

QFX5120 Switches Hardware Overview | 18

QFX5120 Switch Models and Variants | 33

QFX5120 Switch Hardware and CLI Terminology Mapping | 35

QFX5120 Switches Hardware Overview

IN THIS SECTION

Benefits of the QFX5120 Switch | 19

System Software and Hardware and Software Features | 19

Channelization in QFX5120 Switches | 20

Components on the Front and Rear Panels | 21

Virtual Chassis | 31

QFX5120 Cooling System | 32

QFX5120 Power System | 32

The QFX5120 line of switches delivers low latency, flexible deployment options, and rich automation features. QFX5120 Switches build a strong underlay foundation for flexible, high-performance, standards-based fabrics and routing that improve network reliability and agility.

The QFX5120 switch is available in four models—QFX5120-32C, QFX5120-48T, QFX5120-48Y, and QFX5120-48YM. Each model is available in two variants 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.

For a brief overview of the QFX5120-48T switch, see:

Video: QFX5120-48T Switch Hardware Overview

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For a brief overview of the QFX5120-48Y switch, see:

Video: QFX5120-48Y Switch Hardware Overview

For a brief overview of the QFX5120-48YM switch, see:

Video: QFX5120-48YM Switch Hardware Overview

Benefits of the QFX5120 Switch

EVPN-VXLAN architecture - QFX5120 Switches support IP fabrics with EVPN-VXLAN overlays, enabling Layer 2/3 network virtualization.

Hop-by-hop encryption - QFX5120-48YM supports IEEE 802.1AE MACsec AES-256 on all ports to help secure data center and Ethernet-based DCI/WAN deployments.

Synchronization services – Support for PTP enables QFX5120 to meet the requirements of the financial services industry (FSI) and the broadcasting media industry.

Industry-leading wire speeds—QFX5120 switches offer 25-Gbps and 100-Gbps wire speeds.

Support for channelization—You can channelize the QSFP28 ports and increase the number of interfaces.

Support for Virtual Chassis—QFX5120-32C, QFX5120-48T, and QFX5120-48Y switches support Virtual Chassis technology. You can interconnect up to two QFX5120-32C, QFX5120-48T, or QFX5120-48Y switches in a Virtual Chassis configuration.

System Software and Hardware and Software Features

Juniper Networks QFX Series Switches run Junos operating system (Junos OS), which provides Layer 2 and Layer 3 switching, routing, and security services. The first Junos OS release and hardware and software features supported on the models are listed in Table 3 on page 20.

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Table 3: First Junos OS Release and Hardware and Software Features Supported on QFX5120 Switch Models

Switch Model

QFX512032C

QFX512048T

QFX512048Y

QFX512048YM

First Junos OS Release Supported

Junos OS Release

19.1R1

Junos OS Release

20.2R1

Junos OS Release

18.3R1

Junos OS Release

20.4R1

2.2-GHz quad-core Intel CPU

•

16-GB memory

•

64-GB SSD storage

•

2.2-GHz quad-core Intel CPU

•

16-GB memory

•

100-GB SSD storage

•

2.2-GHz quad-core Intel CPU

•

16-GB memory

•

50-GB SSD storage

•

2.9-GHz quad-core Intel CPU

•

16-GB memory

•

100-GB SSD storage

•

Aggregate Throughput (Bidirectional)Hardware Features

6.4 Tbps

2.16 Tbps

4 Tbps

Software Features

Feature-rich automation

•

capabilities with support for Python, Ansible, YANG, Chef, and zero-touch provisioning (ZTP)

Support for VXLAN as a

•

Layer 2 or Layer 3 gateway and Open vSwitch Database (OVSDB) protocol as a Layer 2 gateway

Advanced Junos OS

•

features such as EVPN, BGP, MPLS, Layer 3 VPN, IPv6 Provider Edge (6PE), telemetry, segment routing, and MC-LAG

Channelization in QFX5120 Switches

QFX5120 switches support channelization. You can channelize the 100GbE/40GbE quad small form-factor pluggable (QSFP28) ports into interfaces by connecting breakout cables and by using CLI configuration.

Table 4 on page 21 lists the channelization supported on the models.

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Table 4: Channelization in QFX5120 Switches

Supported ChannelizationPort SpeedPortsSwitch Model

For More Information

NOTE: On

port 31, you cannot configure four 10GbE interfaces or four 25GbE interfaces.

Four 10GbE interfaces40 Gbps0 through 30QFX5120-32C

Four 25GbE interfaces100 Gbps0 through 30

Two 50GbE interfaces100 Gbps0 through 31

Four 10GbE interfaces40 Gbps50 and 51QFX5120-48T

Four 25GbE interfaces100 Gbps50 and 51

Two 50GbE interfaces100 Gbps48 through 53

Channelizing Interfaces on

QFX5120-32C Switches

Channelizing Interfaces on

QFX5120-48T Switches

Components on the Front and Rear Panels

IN THIS SECTION

QFX5120-32C Switches | 22

QFX5120-48T Switches | 23

Four 10GbE interfaces40 Gbps48 through 55QFX5120-48Y

Four 25GbE interfaces100 Gbps48 through 55

Four 10GbE interfaces40 Gbps50 and 52QFX5120-48YM

Four 25GbE interfaces100 Gbps50 and 52

Two 50GbE interfaces100 Gbps50 and 52

Channelizing Interfaces on

QFX5120-48Y Switches

Channelizing Interfaces on

QFX5120-48YM Switches

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QFX5120-48Y Switches | 26

g051100

432

6 5 37

QFX5120-32C

QFX5120-48YM Switches | 28

QFX5120-32C Switches

Figure 1 on page 22 shows the front view of the QFX5120-32C switch.

Figure 1: QFX5120-32C—Front View

Figure 2 on page 22 shows the rear view of the QFX5120-32C switch.

Figure 2: QFX5120-32C—Rear View

Figure 3 on page 22 shows the components on the front panel of a QFX5120-32C switch.

Figure 3: Components on the Front Panel of a QFX5120-32C Switch

5—1— RJ-45 console port (labeled CON)QSFP28 ports

6—2— Chassis ID LED (labeled ID)RJ-45 management port (labeled MGMT)

7—3— Reset buttonSFP+ ports

4—USB port

Figure 4 on page 23 shows the components on the rear panel of a QFX5120-32C switch with AC power

supplies.

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Figure 4: Components on the Rear Panel of a QFX5120-32C Switch with AC Power Supplies

g051102

2 1

g051103

2 1

3—1— Fan module LEDsAC power supply

2—Fan modules

Figure 5 on page 23 shows the components on the rear panel of a QFX5120-32C switch with DC power

supplies.

Figure 5: Components on the Rear Panel of a QFX5120-32C Switch with DC Power Supplies

3—1— Fan module LEDsDC power supply

2—Fan modules

QFX5120-48T Switches

Figure 6 on page 23 shows the front view of the QFX5120-48T switch.

Figure 6: QFX5120-48T—Front View

Figure 7 on page 24 shows the rear view of the QFX5120-48T switch.

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Figure 7: QFX5120-48T—Rear View

Figure 8 on page 24 shows the components on the front panel of a QFX5120-48T switch.

Figure 8: Components on the Front Panel of a QFX5120-48T Switch

2—1— 100GbE/40GbE QSFP28 ports10-Gbps BASE-T ports

Figure 9 on page 24 shows the components on the rear panel of a QFX5120-48T switch with AC power

supplies.

Figure 9: Components on the Rear Panel of a QFX5120-48T Switch with AC Power Supplies

8—1— Fan module LEDsChassis status LEDs (labeled ALM, SYS, MST, and ID)

9—2— 10M OUT portRJ-45 management port (labeled MGMT)

10—3— USB portPPS OUT port

11—4— RJ-45 console port (labeled CON)ESD point

12—5— Reset buttonFan modules

7—AC power supply LEDs

13—6— CLEI code labelAC power supplies

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Figure 10 on page 25 shows the components on the rear panel of a QFX5120-48T switch with DC power

supplies.

Figure 10: Components on the Rear Panel of a QFX5120-48T Switch with DC Power Supplies

8—1— Fan module LEDsChassis status LEDs (labeled ALM, SYS, MST, and ID)

9—2— 10M OUT portRJ-45 management port

10—3— USB portPPS OUT port

11—4— RJ-45 console portESD point

12—5— Reset buttonFan modules

13—6— CLEI code labelDC power supplies

7—DC power supply LEDs

Figure 11 on page 26 shows the components on the rear panel of a QFX5120-48T switch with high-voltage

power supplies.

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Figure 11: Components on the Rear Panel of a QFX5120-48T Switch with High-Voltage Power Supplies

8—1— Fan module LEDsChassis status LEDs (labeled ALM, SYS, MST, and ID)

9—2— 10M OUT portRJ-45 management port

10—3— USB portPPS OUT port

11—4— RJ-45 console portESD point

12—5— Reset buttonFan modules

13—6— CLEI code labelHigh-voltage power supplies

7—High-voltage power supply LEDs

QFX5120-48Y Switches

Figure 12 on page 26 shows the front view of the QFX5120-48Y switch.

Figure 12: QFX5120-48Y—Front View

Figure 13 on page 26 shows the rear view of the QFX5120-48Y switch.

Figure 13: QFX5120-48Y—Rear View

Figure 14 on page 27 shows the components on the front panel of a QFX5120-48Y switch.

Page 27

Figure 14: Components on the Front Panel of a QFX5120-48Y Switch

g022500

1 2

2—1— QSFP28 portsSFP28 ports

NOTE:

The SFP28 ports are grouped in quads (groups of four) and you can configure the speed of

•

the ports only in quads; you cannot configure the speed for a single SFP28 port.

The SFP28 ports can operate at 25-Gbps, 10-Gbps, or 1-Gbps speed, based on the configuration

•

set at the quad level. The ports are configured to operate at 10-Gbps speed by default. If you need the ports to support the other speeds, you must configure those speeds.

CAUTION: Do not install 1GbE copper transceivers (such as QFX-SFP-1GE-T) directly

above or below another 1GbE copper transceiver. Use only the top row or bottom row to avoid damage to the device caused by some types of copper transceivers when the transceivers are installed above or below each other. However, if you are using copper transceivers with the OEM part number FCLF8521P2BTL-J1 printed on the transceiver label, you can install the transceivers in any port with no restrictions. For devices that support 10GbE copper transceivers, there is no similar restriction.

Figure 15 on page 28 shows the components on the rear panel of a QFX5120-48Y switch with AC power

supplies.

Page 28

Figure 15: Components on the Rear Panel of a QFX5120-48Y Switch with AC Power Supplies

g051002

1 3 4

5 6

12 11 10 89 7 7

7—1— Power supply LEDsChassis status LEDs

8—2— Fan module LEDsRJ-45 console port

9—3— RJ-45 management port (labeled C0)RJ-45 management port (labeled C1)

10—4— Reset buttonESD point

11—5— USB portFan modules

12—6— CLEI code labelPower supplies

Figure 16 on page 28 shows the components on the rear panel of a QFX5120-48Y switch with DC power

supplies.

Figure 16: Components on the Rear Panel of a QFX5120-48Y Switch with DC Power Supplies

7—1— Power supply LEDsChassis status LEDs

8—2— Fan module LEDsRJ-45 console port

9—3— RJ-45 management port (labeled C0)RJ-45 management port (labeled C1)

10—4— Reset buttonESD point

11—5— USB portFan modules

QFX5120-48YM Switches

Figure 17 on page 29 shows the front view of the QFX5120-48YM switch.

12—6— CLEI code labelPower supplies

Page 29

Figure 17: QFX5120-48YM—Front View

Figure 18 on page 29 shows the rear view of the QFX5120-48YM switch.

Figure 18: QFX5120-48YM—Rear View

Figure 19 on page 29 shows the components on the front panel of a QFX5120-48YM switch.

Figure 19: Components on the Front Panel of a QFX5120-48YM Switch

2—1— QSFP28 portsSFP28 ports

NOTE:

The SFP28 ports are grouped in quads (groups of four) and you can configure the speed of

•

the ports only in quads; you cannot configure the speed for a single SFP28 port.

The SFP28 ports can operate at 25-Gbps, 10-Gbps, or 1-Gbps speed, based on the configuration

•

set at the quad level. The ports are configured to operate at 10-Gbps speed by default. If you need the ports to support the other speeds, you must configure those speeds.

Figure 20 on page 30 shows the components on the rear panel of a QFX5120-48YM switch with AC power

supplies.

Page 30

Figure 20: Components on the Rear Panel of a QFX5120-48YM Switch with AC Power Supplies

7—1— Power supply LEDsChassis status LEDs (labeled ALM, SYS, MST, and ID)

8—2— Fan module LEDsRJ-45 console port

9—3— 10M OUT and PPS OUT portsRJ-45 management port (labeled C1)

10—4— RJ-45 management port (labeled C0)ESD point

11—5— Reset buttonFan modules

12—6— USB portPower supplies

Figure 21 on page 30 shows the components on the rear panel of a QFX5120-48YM switch with DC

power supplies.

Figure 21: Components on the Rear Panel of a QFX5120-48YM Switch with DC Power Supplies

7—1— Power supply LEDsChassis status LEDs (labeled ALM, SYS, MST, and ID)

8—2— Fan module LEDsRJ-45 console port

9—3— 10M OUT and PPS OUT portsRJ-45 management port (labeled C1)

10—4— RJ-45 management port (labeled C0)ESD point

11—5— Reset buttonFan modules

12—6— USB portPower supplies

The CLEI code label is on the top panel of QFX5120-48YM switches, above the management ports.

Figure 22 on page 31 shows the location of the CLEI code label.

Page 31

Figure 22: Location of the CLEI Code Label on QFX5120-48YM Switches

1—CLEI code label

Virtual Chassis

QFX5120-32C, QFX5120-48T, and QFX5120-48Y switches support Virtual Chassis technology. You can connect a QX5120 switch only with another QFX5120 switch of the same model in a Virtual Chassis configuration. QFX5120 switches do not have dedicated or default Virtual Chassis ports (VCPs). However, you can configure any of the QSFP28 ports as VCPs when those ports are not channelized.

Table 5 on page 31 lists the Junos OS release in which Virtual Chassis support is introduced and the

QSFP28 ports that you can configure as VCPs.

Table 5: Virtual Chassis Support in QFX5120 Switches

Support Introduced in ReleaseModel

Maximum Number of Switches in the Virtual Chassis

Virtual Chassis Ports

32 QSFP28 ports (0 through 31)2Junos OS Release 20.3R1QFX5120-32C

6 QSFP28 ports (48 through 53)2Junos OS Release 20.2R1QFX5120-48T

8 QSFP28 ports (48 through 55)2Junos OS Release 19.3R1QFX5120-48Y

You configure, monitor, and maintain the QFX5120 Virtual Chassis the same way as you configure, monitor, and maintain a Virtual Chassis involving other QFX Series switches. See the following topics for more details on how to configure and change the members in a QFX5120 Virtual Chassis:

Understanding Virtual Chassis Components

•

Removing or Replacing a Member Switch of a Virtual Chassis Configuration

•

Adding a New Switch to an Existing EX4650 or QFX Series Virtual Chassis

•

Virtual Chassis Fabric Overview

•

Page 32

QFX5120 Cooling System

The cooling system in QFX5120 switches consists of fan modules and built-in fans in the power supplies. The airflow direction depends on the fan modules and power supplies installed in the switch. You can order a QFX5120 switch that supports front-to-back airflow (air enters through the front of the switch) or back-to-front airflow (air enters through the back of the switch).

The fan modules are hot-removable and hot-insertable field-replaceable units (FRUs) installed in the rear panel of the switch: You can remove and replace them without powering off the switch or disrupting switch functions.

QFX5120 Power System

QFX5120-32C, QFX5120-48T, and QFX5120-48Y switches support two 650-W AC or DC power supplies with front-to-back or back-to-front airflow. Additionally, QFX5120-48T switches support two 850-W high-voltage power supplies with AC or DC input and front-to-back or back-to-front airflow. QFX5120-48YM switches support two 850-W AC or DC power supplies with front-to-back or back-to-front airflow. Power supplies for the QFX5120 switch are fully redundant, load-sharing, and hot-removable and hot-insertable FRUs when the second power supply is installed and running. You can remove and replace them without powering off the switch or disrupting switch functions. Each power supply is cooled by its own internal cooling system. We ship QFX5120 switches with two AC or DC power supplies preinstalled in the rear panel of the chassis.

CAUTION:

Do not mix:

AC and DC power supplies in the same chassis.

•

650-W and 850-W power supplies in the same QFX5120-48T chassis.

•

Power supplies with different airflow directions in the same chassis.

•

Fan modules with different airflow directions in the same chassis.

•

Power supplies and fan modules with different airflow directions in the same chassis.

•

If you install power supplies or fan modules with different airflow directions, Junos OS raises an alarm.

Page 33

QFX5120 Switch Models and Variants

The QFX5120 has four models: QFX5120-32C, QFX5120-48T, QFX5120-48Y, and QFX5120-48YM. Each of these models has variants depending on power supply (AC or DC) and airflow (front-to-back or back-to-front). All variants of the QFX5120-32C switch ship with two power supplies and six fans installed by default. All variants of the QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches ship with two power supplies and five fans installed by default. Table 6 on page 33 lists the components shipped with QFX5120 switch models and their variants.

Table 6: QFX5120 Switch Models and Their Configurations

Model Number

QFX512032C-AFO

QFX512032C-AFI

QFX512032C-DC-AFO

QFX512032C-DC-AFI

QFX512048T-AFO

Number of Ports and Their Types

2 10GbE SFP+

•

32 100GbE/40GbE

•

QSFP28

2 10GbE SFP+

•

32 100GbE/40GbE

•

QSFP28

2 10GbE SFP+

•

32 100GbE/40GbE

•

QSFP28

2 10GbE SFP+

•

32 100GbE/40GbE

•

QSFP28

6 100GbE/40GbE

•

QSFP28

48 10GbE BASE-T

•

Power Supplies Shipped by Default

Two 650-W AC power supplies with front-to-back airflow, indicated by a red ejector lever.

Two 650-W AC power supplies with back-to-front airflow, indicated by a blue ejector lever.

Two 650-W DC power supplies with front-to-back airflow, indicated by a red ejector lever.

Two 650-W DC power supplies with back-to-front airflow, indicated by a blue ejector lever.

Two 650-W AC power supplies with front-to-back airflow, indicated by a Juniper Gold ejector lever.

Fan Modules Shipped by Default

Six fan modules with front-to-back airflow, indicated by the label F2B and a red handle.

Six fan modules with back-to-front airflow, indicated by the label B2F and a blue handle.

Six fan modules with front-to-back airflow, indicated by the label F2B and a red handle.

Six fan modules with back-to-front airflow, indicated by the label B2F and a blue handle.

Five fan modules with front-to-back airflow, indicated by the label AIR OUT and a Juniper Gold handle.

QFX512048T-AFI

QFX512048T-DC-AFO

6 100GbE/40GbE

•

QSFP28

48 10GbE BASE-T

•

6 100GbE/40GbE

•

QSFP28

48 10GbE BASE-T

•

Two 650-W AC power supplies with back-to-front airflow, indicated by a Juniper Azure Blue ejector lever.

Two 650-W DC power supplies with front-to-back airflow, indicated by a Juniper Gold ejector lever.

Five fan modules with back-to-front airflow, indicated by the label AIR IN and a Juniper Azure Blue handle.

Five fan modules with front-to-back airflow, indicated by the label AIR

OUT and a Juniper Gold handle.

Page 34

Table 6: QFX5120 Switch Models and Their Configurations (continued)

Model Number

QFX512048T-DC-AFI

QFX512048Y-AFO2

QFX512048Y-AFI2

QFX512048Y-DC-AFO2

Number of Ports and Their Types

6 100GbE/40GbE

•

QSFP28

48 10GbE BASE-T

•

8 100GbE/40GbE

•

QSFP28

48 25GbE/

•

10GbE/1GbE SFP28

8 100GbE/40GbE

•

QSFP28

48 25GbE/

•

10GbE/1GbE SFP28

8 100GbE/40GbE

•

QSFP28

48 25GbE/

•

10GbE/1GbE SFP28

Power Supplies Shipped by Default

Two 650-W DC power supplies with back-to-front airflow, indicated by a Juniper Azure Blue ejector lever.

Two 650-W AC power supplies with front-to-back airflow, indicated by a Juniper Gold ejector lever.

Two 650-W AC power supplies with back-to-front airflow, indicated by a Juniper Azure Blue ejector lever.

Two 650-W DC power supplies with front-to-back airflow, indicated by a Juniper Gold ejector lever.

Fan Modules Shipped by Default

Five fan modules with back-to-front airflow, indicated by the label AIR IN and a Juniper Azure Blue handle.

Five fan modules with front-to-back airflow, indicated by the label AIR OUT and a Juniper Gold handle.

Five fan modules with back-to-front airflow, indicated by the label AIR IN and a Juniper Azure Blue handle.

Five fan modules with front-to-back airflow, indicated by the label AIR OUT and a Juniper Gold handle.

QFX512048Y-DC-AFI2

QFX512048YM-AFO

QFX512048YM-AFI

8 100GbE/40GbE

•

QSFP28

48 25GbE/

•

10GbE/1GbE SFP28

8 100GbE/40GbE

•

QSFP28 that support Media Access Control Security (MACsec)

48 25GbE/

•

10GbE/1GbE SFP28 that support MACsec

8 100GbE/40GbE

•

QSFP28 that support MACsec

48 25GbE/

•

10GbE/1GbE SFP28 that support MACsec

Two 650-W DC power supplies with back-to-front airflow, indicated by a Juniper Azure Blue ejector lever.

Two 850-W AC power supplies with front-to-back airflow, indicated by a Juniper Gold ejector lever.

Two 850-W AC power supplies with back-to-front airflow, indicated by a Juniper Azure Blue ejector lever.

Five fan modules with back-to-front airflow, indicated by the label AIR IN and a Juniper Azure Blue handle.

Five fan modules with front-to-back airflow, indicated by the label AIR OUT and a Juniper Gold handle.

Five fan modules with back-to-front airflow, indicated by the label AIR

IN and a Juniper Azure Blue handle.

Page 35

Table 6: QFX5120 Switch Models and Their Configurations (continued)

Model Number

QFX512048YM-DC-AO

QFX512048YM-DC-AI

Number of Ports and Their Types

8 100GbE/40GbE

•

QSFP28 that support MACsec

48 25GbE/

•

10GbE/1GbE SFP28 that support MACsec

8 100GbE/40GbE

•

QSFP28 that support MACsec

48 25GbE/

•

10GbE/1GbE SFP28 that support MACsec

CAUTION:

Do not mix:

Power Supplies Shipped by Default

Two 850-W DC power supplies with front-to-back airflow, indicated by a Juniper Gold ejector lever.

Two 850-W DC power supplies with back-to-front airflow, indicated by a Juniper Azure Blue ejector lever.

Fan Modules Shipped by Default

Five fan modules with front-to-back airflow, indicated by the label AIR OUT and a Juniper Gold handle.

Five fan modules with back-to-front airflow, indicated by the label AIR IN and a Juniper Azure Blue handle.

AC and DC power supplies in the same chassis.

•

650-W and 850-W power supplies in the same QFX5120-48T chassis.

•

Power supplies with different airflow directions in the same chassis.

•

Fan modules with different airflow directions in the same chassis.

•

Power supplies and fan modules with different airflow directions in the same chassis.

•

QFX5120 Switch Hardware and CLI Terminology Mapping

This topic describes the hardware terms used in QFX5120 switch documentation and the corresponding terms used in the Junos OS CLI (see Table 7 on page 36).

Page 36

Table 7: CLI Equivalents of Terms Used in the Documentation for QFX5120 Switches

Hardware Item (CLI)

Chassis

Routing Engine (n)

QFX5120-

•

32C

QFX5120-

•

48T-CHAS

JNP48Y8C

•

-CHAS

QFX5120-

•

48YM-8C

One of the following:

RE-QFX5120-

•

32C

RE-QFX5120-

•

48T-6C

RE-QFX5120-

•

48Y-8C

RE-QFX5120-

•

48YM-8C

n is a value in the

•

range 0 through 1 for a switch that is part of a Virtual Chassis.

On a standalone

•

switch, the default value is 0.

Item in DocumentationValueDescription (CLI)

Switch chassis–One of the following:

Additional Information

“QFX5120 Switch Models and Variants” on page 33

–Routing Engine

FPC (n)

Abbreviated name of the Flexible PIC Concentrator (FPC)

One of the following:

QFX5120

•

-32C

QFX5120

•

-48T-CHAS

JNP48Y8C

•

-CHAS

QFX5120-

•

48YM-8C

n is a value in the

•

range 0 through 1 for a switch that is part of a Virtual Chassis.

On a standalone

•

switch, the default value is 0.

In QFX5120, FPC refers to the switch itself.

Understanding Interface

Naming Conventions

Page 37

Table 7: CLI Equivalents of Terms Used in the Documentation for QFX5120 Switches (continued)

Hardware Item (CLI)

Xcvr (n)

Abbreviated name of the transceiver

n is a value equivalent to the number of the port in which the transceiver is installed.

Item in DocumentationValueDescription (CLI)

Optical transceivers

Additional Information

“QFX5120 Network Cable and Transceiver Planning” on page 108

Page 38

Table 7: CLI Equivalents of Terms Used in the Documentation for QFX5120 Switches (continued)

Hardware Item (CLI)

One of the following:

QFX5120-32C Fan Tray n,

•

Front to Back Airflow AFO

QFX5120-32C Fan Tray n,

•

Back to Front Airflow - AFI

QFX5120-48T

One of the following:

Fan-board Fan Tray n,

•

Front to Back Airflow AFO

Fan-board Fan Tray n, Back

•

to Front Airflow - AFI

n has a value 0 through 5, corresponding to the fan module slot number.

n has a value 0 through 4, corresponding to the fan module slot number.

Item in DocumentationValueDescription (CLI)

Fan moduleQFX5120-32CFan tray (n)

Additional Information

“QFX5120 Cooling System” on page 56

QFX5120-48Y

One of the following:

fan-ctrl-n, Front to Back

•

Airflow - AFO

fan-ctrl-n, Back to Front

•

Airflow - AFI

QFX5120-48YM

One of the following:

Fan-board Fan Tray n,

•

Front to Back Airflow AFO

Fan-board Fan Tray n, Back

•

to Front Airflow - AFI

n has a value 0 through 4, corresponding to the fan module slot number.

Page 39

Table 7: CLI Equivalents of Terms Used in the Documentation for QFX5120 Switches (continued)

Hardware Item (CLI)

Power Supply (n)

QFX5120-32C

One of the following:

QFX520048Y

•

-650W-AC

-AFI

QFX520048Y

•

-650W-AC

-AFO

QFX5120-48T

One of the following:

JPSU

•

-650W-AC

-AO

JPSU

•

-650W-AC

-AI

JPSU

•

-850W-HV

-AFO

JPSU

•

-850W-HV

-AFI

JPSU

•

-650W-DC

-AFO

JPSU

•

-650W-DC

-AFI

through 1, corresponding to the power supply slot number.

Item in DocumentationValueDescription (CLI)

Power supplyn has a value 0

Additional Information

“QFX5120 Power System” on page 67

Page 40

Table 7: CLI Equivalents of Terms Used in the Documentation for QFX5120 Switches (continued)

Hardware Item (CLI)

QFX5120-48Y

One of the following:

JPSU

•

-650W-AC

-AO

JPSU

•

-650W-AC

-AI

JPSU

•

-650W-DC

-AFO

JPSU

•

-650W-DC

-AFI

QFX5120-48YM

Item in DocumentationValueDescription (CLI)

Additional Information

One of the following:

JPSU

•

-850W-AC

-AFO

JPSU

•

-850W-AC

-AFI

JPSU

•

-850W-DC

-AFO

JPSU

•

-850W-DC

-AFI

Page 41

CAUTION:

Do not mix:

AC and DC power supplies in the same chassis.

•

650-W and 850-W power supplies in the same QFX5120-48T chassis.

•

Power supplies with different airflow directions in the same chassis.

•

Fan modules with different airflow directions in the same chassis.

•

Fan modules and power supplies with different airflow directions in the same chassis.

•

QFX5120 Chassis

IN THIS SECTION

Chassis Physical Specifications for QFX5120 Switches | 41

Field-Replaceable Units in QFX5120 Switches | 42

Chassis Status LEDs in QFX5120 Switches | 43

LEDs on the Management Port on QFX5120 Switches | 46

Network Port LEDs on QFX5120 Switches | 48

Chassis Physical Specifications for QFX5120 Switches

The QFX5120 switch chassis is a rigid sheet-metal structure that houses all components of the switch.

Table 8 on page 41 shows the physical specifications of the QFX5120 switch models.

Table 8: Physical Specifications of the QFX5120 Switch Models

WeightDepthWidthHeightModel

QFX5120-32C

(4.33 cm)

17.26 in. (43.84 cm)1.7 in.

20.27 in. (51.5 cm) excluding fan and power supply handles

21.12 lb (9.58 kg) with two power supplies and fans installed

Page 42

Table 8: Physical Specifications of the QFX5120 Switch Models (continued)

WeightDepthWidthHeightModel

QFX5120-48T

QFX5120-48Y

QFX5120-48YM

1.72 in. (4.37 cm)

17.36 in. (44.09 cm)

•

The outer edges of the

•

front-mounting brackets extend the width to 19 in. (48.2 cm)

17.36 in. (44.09 cm)

•

The outer edges of the

•

front-mounting brackets extend the width to 19 in. (48.2 cm)

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 handles

Field-Replaceable Units in QFX5120 Switches

24.25 lb (11 kg) with two power supplies and fans installed

23.7 lb (10.75 kg) with two power supplies and fans installed

24.8 lb (11.25 kg) with two power supplies and fans installed

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 or disrupting switch functions. The QFX5120 switches have the following FRUs:

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.

Page 43

NOTE: If you have a Juniper J-Care service contract, register any addition, change, or upgrade

g051128

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.

Chassis Status LEDs in QFX5120 Switches

The rear panel of QFX5120-32C switches has a chassis ID LED labeled ID (see Figure 23 on page 43).

Figure 23: Chassis ID LED on a QFX5120-32C Switch

1—Chassis ID LED (labeled ID)

Table 9 on page 43 describes the chassis ID LED on QFX5120-32C switches, its color and states, and the

status they indicate.

Table 9: Chassis ID LED on QFX5120-32C Switches

State and DescriptionColorLED Label

Blinking—The beacon feature is enabled on the switch.AmberID

Unlit

The beacon feature is not enabled on the switch. You can enable the beacon feature by using the request chassis beacon command.

The rear panel of QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches has four chassis status LEDs labeled ALM, SYS, MST, and ID (see Figure 24 on page 44, Figure 25 on page 44, and

Figure 26 on page 44).

Page 44

Figure 24: Chassis Status LEDs on QFX5120-48T Switches

g051257

ALM

MST

10M OUT

PPS OUT

RESET

SYS

g051027

g051370

1—Chassis status LEDs (labeled ALM, SYS, MST, and ID)

Figure 25: Chassis Status LEDs on QFX5120-48Y Switches

1—Chassis status LEDs (labeled ALM, SYS, MST, and ID)

Figure 26: Chassis Status LEDs on QFX5120-48YM Switches

1—Chassis status LEDs (labeled ALM, SYS, MST, and ID)

Table 10 on page 45 describes the chassis status LEDs on QFX5120-48T, QFX5120-48Y, and

QFX5120-48YM switches, their colors and states, and the status they indicate.

Page 45

Table 10: Chassis Status LEDs on QFX5120-48T, QFX5120-48Y, and QFX5120-48YM Switches

State and DescriptionColorLED Label

RedALM

Amber

There is a major hardware fault, such as a temperature alarm or a power failure alarm, and the switch is halted.

A major alarm indicates a critical error condition that requires immediate action. See “Chassis Component Alarm Conditions on QFX5120

Switches” on page 204.

There is a minor alarm such as a software or a hardware error. Power off the switch and then power it on. Monitor the switch to see if it is working properly.

A minor alarm indicates a noncritical condition that requires monitoring or maintenance. A minor alarm that is left unchecked might cause interruption in service or performance degradation.

There is no alarm or the switch is halted.Unlit

On steadily—Junos OS for QFX Series switches is loaded on the switch.GreenSYS

Blinking—The switch is a member in a QFX Series Virtual Chassis configuration.

GreenMST

Unlit

The switch is powered off or is halted.Unlit

In a standalone QFX5120 switch: On steadily—The switch is functioning normally as the primary switch.

In a Virtual Chassis configuration:

On steadily—The switch is functioning normally and is the primary

•

switch.

Blinking—The switch is functioning normally and is the backup.

•

In a standalone QFX5120 switch: The switch is powered off or halted.

•

In a Virtual Chassis configuration: The switch is a linecard member.

•

Blinking—The beacon feature is enabled on the switch.BlueID

The beacon feature is not enabled on the switch. You can enable the beacon feature by using the request chassis beacon command.

Page 46

LEDs on the Management Port on QFX5120 Switches

g051127

QFX5120-32C switches have one management port on the front panel. Figure 27 on page 46 shows the location of the management port on the QFX5120-32C and the LED on the port. The LED indicates link activity of the port. Table 11 on page 46 describes the LED on the management port on QFX5120-32C switches.

QFX5120-48T switches have one management port on the rear panel. Figure 28 on page 47 shows the location of the management port on the QFX5120-48T and the LEDs on the port. The LEDs indicate link activity and status of the port. Table 12 on page 48 describes the LEDs on the management port on QFX5120-48T switches.

QFX5120-48Y switches have two management ports on the rear panel. Figure 29 on page 47 shows the location of the management ports on the QFX5120-48Y and the LEDs on the ports. The LEDs indicate link activity and status of the port. Table 12 on page 48 describes the LEDs on the management ports on QFX5120-48Y switches.

QFX5120-48YM switches have two management ports on the rear panel. Figure 30 on page 47 shows the location of the management ports on the QFX5120-48YM and the LEDs on the ports. The LEDs indicate link activity and status of the port. Table 12 on page 48 describes the LEDs on the management ports on QFX5120-48YM switches.

Figure 27: Location of the Management Port on QFX5120-32C Switches and the LED on the Port

1—Link activity LED

Table 11: LED on the Management Port on QFX5120-32C Switches

State and DescriptionColorLED

On steadily—The port and the link are active, but there is no link activity.GreenLink activity

Blinking—The port and the link are active and there is link activity.

Unlit

The port is administratively disabled, there is no power, the link is down, or there is a fault.

Page 47

Figure 28: Location of the Management Port on QFX5120-48T Switches and the LEDs on the Port

g051256

ALM

MST

10M OUT

PPS OUT

RESET

SYS

1 2

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g051369

2—1— Link activity LEDStatus LED

Figure 29: Location of the Management Ports on QFX5120-48Y Switches and the LEDs on the Port

2—1— Link activity LEDStatus LED

Figure 30: Location of the Management Ports on QFX5120-48YM Switches and the LEDs on the Port

2—1— Link activity LEDStatus LED

Page 48

Table 12: LEDs on the Management Ports on QFX5120-48T, QFX5120-48Y, and QFX5120-48YM Switches

State and DescriptionColorLED

On steadily—The port and the link are active, but there is no link activity.GreenLink activity

Blinking—The port and the link are active and there is link activity.

Unlit

The port is administratively disabled, there is no power, the link is down, or there is a fault.

On steadily—The link speed is 1000 Mbps.GreenStatus

On steadily—The link speed is 100 Mbps.Yellow

Either the port speed is 10 Mbps or the link is down.Unlit

Network Port LEDs on QFX5120 Switches

IN THIS SECTION

Network Port LEDs on QFX5120-32C Switches | 48

Network Port LEDs on QFX5120-48T Switches | 50

Network Port LEDs on QFX5120-48Y Switches | 52

Network Port LEDs on QFX5120-48YM Switches | 54

Network Port LEDs on QFX5120-32C Switches

Each SFP+ port on QFX5120-32C switches has one LED that shows the link activity of the port (see

Figure 31 on page 49). See Table 13 on page 49 to learn more about that LED.

Each QSFP28 port on QFX5120-32C switches has four LEDs that show the link activity of the port (see

Figure 32 on page 49). The first LED operates when the port is not channelized; the other three LEDs

operate when the port is channelized. See Table 14 on page 50 to learn more about those LEDs.

Page 49

Figure 31: LED on the SFP+ Ports on QFX5120-32C Switches

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1 2

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2—1— LED for the SFP+ port 33LED for the SFP+ port 32

Table 13: LED on the SFP+ Ports on QFX5120-32C Switches

State and DescriptionColor

On steadily—The port and the link are active, but there is no link activity.Green

Blinking—The port and the link are active and there is link activity.

The port is not active.Unlit

Figure 32: LEDs on the QSFP28 Ports on QFX5120-32C Switches

1—LEDs on the QSFP28 ports

Page 50

Table 14: LEDs on the QSFP28 Ports on QFX5120-32C Switches

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1 2

DescriptionStateColorPosition

On steadilyGreen1

Blinking

On steadilyGreen2–4

Blinking

UnlitUnlit1–4

The port is not channelized, a 100 -Gbps or 40 -Gbps link is established, but there is no link activity. When this LED is on, the LEDs in positions 2 through 4 are off.

The port is not channelized, a 100 -Gbps or 40 -Gbps link is established, and there is link activity.

The port is channelized, a 25-Gbps or 10-Gbps link is established, but there is no link activity.

The port is not channelized, a 25-Gbps or 10-Gbps link is established, and there is link activity.

The port is administratively disabled, there is no power, the link is down, or there is a fault.

Network Port LEDs on QFX5120-48T Switches

Each BASE-T port on QFX5120-48T switches has one LED that indicates the status of the port (see

Figure 33 on page 50). See Table 15 on page 51 to learn more about that LED.

Each QSFP28 port on QFX5120-48T switches has one LED that indicates the status of the port (see

Figure 34 on page 51). See Table 16 on page 52 to learn more about that LED.

Figure 33: LEDs on the 10-GbE BASE-T Ports on QFX5120-48T Switches

2—1— LED for the BASE-T ports in the bottom rowLED for the BASE-T ports in the top row

Page 51

Table 15: LEDs on the BASE-T Ports on QFX5120-48T Switches

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48 4 9

State and DescriptionColor

On steadily—The port is operating at 10-Gbps speed, but there is no link activity.Green

Blinking—The port is operating at 10-Gbps speed and there is link activity.

On steadily—The port is operating at 1-Gbps speed, but there is no link activity.Yellow

Blinking—The port is operating at 1-Gbps speed and there is link activity.

Blipping—The beacon function is enabled on the port.

The port is administratively disabled, there is no power, the link is down, or there is a fault.Unlit

Figure 34: LED on the QSFP28 Ports on QFX5120-48T Switches

2—1— LED for the QSFP28 ports in the bottom rowLED for the QSFP28 ports in the top row

Page 52

Table 16: LED on the QSFP28 Ports on QFX5120-48T Switches

State and DescriptionColor

Green

Amber

When the port is not channelized and is configured to operate as one 100GbE or 40GbE interface:

On steadily—The port is operational, but there is no link activity.

•

Blinking—The port is operational and there is link activity.

•

When the port is channelized and is configured to operate as two 50GbE interfaces:

On steadily—The port is operational, both the interfaces are operational, but there is no link

•

activity.

Blinking—The port is operational and there is link activity on at least one of the interfaces.

•

When the ports 50 and 51 are channelized and are configured to operate as four 25GbE or 10GbE interfaces:

On steadily—All four breakout links are established, but there is no link activity on any of the

•

channelized interfaces.

Blinking—All four breakout links are established and there is link activity on at least one of the

•

channelized interfaces.

When the port is channelized and is configured to operate as two 50GbE interfaces:

On steadily—One or more breakout link is established, but there is no link activity on any of the

•

channelized interfaces.

Blinking—One or more breakout link is established and there is link activity on at least one of the

•

channelized interfaces.

Blipping—The beacon function is enabled on the port.

•

When the ports 50 and 51 are channelized and are configured to operate as four 25GbE or 10GbE interfaces:

On steadily—One or more breakout link is established, but there is no link activity on any of the

•

channelized interfaces.

Blinking—One or more breakout link is established and there is link activity on at least one of the

•

channelized interfaces.

Blipping—The beacon function is enabled on the port.

•

The port is administratively disabled, there is no power, the link is down, or there is a fault.Unlit

Network Port LEDs on QFX5120-48Y Switches

Each SFP28 port on QFX5120-48Y switches has two LEDs that show the link activity and status of the port (see Figure 35 on page 53). See Table 17 on page 53 to learn more about those LEDs.

Page 53

Each QSFP28 port on QFX5120-48Y switches has four LEDs that show the link activity of the port (see

g022531

1 2

Figure 36 on page 54). The first LED operates when the port is not channelized; the other three LEDs

operate when the port is channelized. See Table 18 on page 54 to learn more about those LEDs.

Figure 35: LEDs on the SFP28 Ports on QFX5120-48Y Switches

2—1— Status LED for the SFP28 portsLink activity LED for the SFP28 ports

Table 17: LEDs on the SFP28 Ports on QFX5120-48Y Switches

State and DescriptionColorLED

On steadily—The port and the link are active, but there is no link activity.GreenLink activity

Blinking—The port and the link are active and there is link activity.

The port is not active.Unlit

On steadily—The port is operating at 25-Gbps speed.GreenStatus

Blinking—The port is operating at 1-Gbps or 10-Gbps speed.

Page 54

Figure 36: LEDs on the QSFP28 Ports on QFX5120-48Y Switches

g022530

1—LEDs on the QSFP28 ports in the top row

Table 18: LEDs on the QSFP28 Ports on QFX5120-48Y Switches

DescriptionStateColorPosition

On steadilyGreen1

Blinking

On steadilyGreen2–4

Blinking

UnlitUnlit1–4

The port is not channelized, a 100 Gbps or 40 Gbps link is established, but there is no link activity. When this LED is on, the LEDs in positions 2 through 4 are off.

The port is not channelized, a 100 Gbps or 40 Gbps link is established, and there is link activity.

The port is channelized, a 25-Gbps or 10-Gbps link is established, but there is no link activity.

The port is not channelized, a 25-Gbps or 10-Gbps link is established, and there is link activity.

The beacon function is enabled on the port.BlinkingAmberAll

The port is administratively disabled, there is no power, the link is down, or there is a fault.

Network Port LEDs on QFX5120-48YM Switches

Each SFP28 port on QFX5120-48YM switches has one LED that shows the link activity and status of the port (see Figure 37 on page 55). See Table 19 on page 55 to learn more about that LED.

Each QSFP28 port on QFX5120-48YM switches has one LED that shows the link activity and status of the port (see Figure 38 on page 55). See Table 20 on page 55 to learn more about those LEDs.

Page 55

Figure 37: LED on the SFP28 Ports on QFX5120-48YM Switches

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g051416

1—LED on the SFP28 ports on QFX5120-48YM switches

Table 19: LED on the SFP28 Ports on QFX5120-48YM Switches

State and DescriptionColor

On steadily—A link is established, but there is no link activity.Green

Blinking—A link is established and there is link activity.

Blinking—The beacon function is enabled on the port.Yellow

The port is administratively disabled, there is no power, the link is down, or there is a fault.Unlit

Figure 38: LED on the QSFP28 Ports on QFX5120-48YM Switches

1—LED on the QSFP28 ports on QFX5120-48YM

switches

Table 20: LED on the QSFP28 Ports on QFX5120-48YM Switches

DescriptionStateColor

A link is established, but there is no link activity.On steadilyGreen

A link is established and there is link activity.Blinking

Page 56

Table 20: LED on the QSFP28 Ports on QFX5120-48YM Switches (continued)

DescriptionStateColor

The beacon function is enabled on the port.BlinkingYellow

UnlitUnlit

The port is administratively disabled, there is no power, the link is down, or there is a fault.

QFX5120 Cooling System

IN THIS SECTION

Fan Modules for QFX5120 Switches | 56

QFX5120 Models and Airflow Direction | 58

QFX5120 Models with Front-to-Back Airflow | 61

QFX5120 Models with Back-to-Front Airflow | 63

How to Position the Switch | 65

QFX5120 Fan Module Status | 66

Fan Modules for QFX5120 Switches

We ship QFX5120-32C switches with six fan modules (5+1 redundancy) preinstalled in the rear panel. We ship QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches with five fan modules (4+1 redundancy) preinstalled in the rear panel.

Page 57

The fan modules are available in two models that have different airflow directions:

g051119

g022520

Front-to-back (cold air enters through the front of the switch and hot air exhausts through the back of

•

the switch), indicated by the label F2B and red handle in QFX5120-32C switches and by the label AIR OUT and Juniper Gold handle in QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches.

Back-to-front (cold air enters through the back of the switch and hot air exhausts through the front),

•

indicated by the label B2F and blue handle in QFX5120-32C switches and by the label AIR IN and Juniper Azure Blue handle in QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches.

Figure 39 on page 57 shows the fan module for QFX5120-32C switches.

Figure 39: Fan Module for QFX5120-32C Switches

The fan module slots on the switch chassis are numbered 0 through 5 from left to right and have an arrow-shaped LED each next to them.

Figure 40 on page 57 shows the fan module for QFX5120-48T, QFX5120-48Y, and QFX5120-48YM

switches.

Figure 40: Fan Module for QFX5120-48T, QFX5120-48Y, and QFX5120-48YM Switches

Page 58

The fan module slots on the switch chassis are numbered 0 through 4 from left to right and have a fan icon and a round LED each next to them.

NOTE: You must install all the fan modules for optimal functioning of the switch.

If the switch is operational while you are replacing fan modules, you must remove only one fan module at a time. The switch continues to operate for 30 seconds without thermal shutdown while you are replacing a fan module.

QFX5120 Models and Airflow Direction

Table 21 on page 58 shows the airflow direction in QFX5120 switch models.

Table 21: Airflow Direction in QFX5120 Switch Models

QFX512032C-AFO

QFX512032C-AFI

QFX512032C-DC-AFO

QFX512032C-DC-AFI

We ship the switch with six fan modules (with front-to-back airflow, indicated by the label F2B and a red handle) and two AC power supplies (with a red ejector lever).

We ship the switch with six fan modules (with front-to-back airflow, indicated by the label B2F and a blue handle) and two AC power supplies (with a blue ejector lever).

We ship the switch with six fan modules (with front-to-back airflow, indicated by the label F2B and a red handle) and two DC power supplies (with a red ejector lever).

We ship the switch with six fan modules (with front-to-back airflow, indicated by the label B2F and a blue handle) and two DC power supplies (with a blue ejector lever).

Direction of Airflow in the Fan Modules and Power SuppliesFan Modules and Power SuppliesModel Number

Front-to-back—Cold 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—Cold 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—Cold 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—Cold 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.

Page 59

Table 21: Airflow Direction in QFX5120 Switch Models (continued)

Direction of Airflow in the Fan Modules and Power SuppliesFan Modules and Power SuppliesModel Number

QFX512048T-AFO

QFX512048T-AFI

QFX512048T-DC-AFO

QFX512048T-DC-AFI

QFX512048Y-AFO2

We ship the switch with five fan modules (with the label AIR OUT) and two AC power supplies (with a Juniper Gold handle).

We ship the switch with five fan modules (with the label AIR IN) and two AC power supplies (with a Juniper Azure Blue handle).

We ship the switch with five fan modules (with the label AIR OUT) and two DC power supplies (with a Juniper Gold handle).

We ship the switch with five fan modules (with the label AIR IN) and two DC power supplies (with a Juniper Azure Blue handle).

We ship the switch with five fan modules (with the label AIR OUT) and two AC power supplies (with a Juniper Gold handle).

Front-to-back—Cold 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—Cold 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—Cold 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—Cold 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—Cold 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.

QFX512048Y-AFI2

QFX512048Y-DC-AFO2

QFX512048Y-DC-AFI2

We ship the switch with five fan modules (with the label AIR IN) and two AC power supplies (with a Juniper Azure Blue handle).

We ship the switch with five fan modules (with the label AIR OUT) and two DC power supplies (with a Juniper Gold handle).

We ship the switch with five fan modules (with the label AIR IN) and two DC power supplies (with a Juniper Azure Blue handle).

Back-to-front—Cold 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—Cold 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—Cold 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.

Page 60