Juniper QFX5200 User Manual

QFX5200 Switch Hardware Guide

Published

2021-02-23

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.

QFX5200 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.

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

QFX5200 System Overview | 18

QFX5200 Switch Description | 18

QFX5200 Hardware | 19

Benefits of QFX5200 Switches | 20

QFX5200-32C Channelization | 21

QFX5200-32C-L Channelization | 21

QFX5200-48Y Channelization | 21

System Software | 21

QFX5200 Hardware Component Overview | 22

QFX5200 Component Redundancy | 23

QFX5200 Field-Replaceable Units | 24

QFX5200 Port Panels | 25

QFX5200-32C and QFX5200-32C-L Port Panel | 25

Network Ports | 26

Channelizing Interfaces | 27

Network Port LEDs | 27

QFX5200-48Y Port Panel | 29

Network Ports | 30

Port Groups | 30

Network Port LEDs | 32

QFX5200 Switch Management | 33

QFX5200 Management Panel Overview | 34

QFX5200-32C and QFX5200-32C-L Management Panel | 34

QFX5200-32C and QFX5200-32C-L Management Port and Console Port LEDs | 36

QFX5200-48Y Management Panel | 36

QFX5200-48Y Management Port LEDs | 37

QFX5200 Chassis Status LEDs | 38

QFX5200-32C and QFX5200-32C-L Chassis Status LEDs | 39

QFX5200-48Y Chassis Status LEDs | 41

QFX5200 Cooling System | 43

QFX5200 Cooling System Description | 43

Fan Modules | 44

Do Not Install Components with Different Airflow or Wattage in the Switch | 49

QFX5200-32C and QFX5200-32C-L Fan Module LED | 50

QFX5200 Power System | 52

QFX5200 AC Power Supply Description | 52

QFX5200 AC Power Specifications | 54

QFX5200 Power Cord Specifications | 55

QFX5200 AC Power Supply LEDs | 57

QFX5200 DC Power Supply Description | 59

QFX5200 DC Power Specifications | 61

QFX5200 DC Power Supply LEDs | 62

Site Planning, Preparation, and Specifications

QFX5200 Site Preparation Checklist | 66

Planning a Virtual Chassis Deployment using QFX Devices | 67

Valid Configurations for a QFX Virtual Chassis | 68

Valid Configurations for a QFX5110 Virtual Chassis | 69

Valid Configurations for a QFX5200 Virtual Chassis | 69

VC Deployment Checklist | 69

QFX5200 Site Guidelines and Requirements | 72

QFX5200 Environmental Requirements and Specifications | 73

General Site Guidelines | 75

QFX5200 Grounding Cable and Lug Specifications | 75

QFX5200 Clearance Requirements for Airflow and Hardware Maintenance | 76

QFX5200 Chassis Physical Specifications | 77

Site Electrical Wiring Guidelines | 78

QFX5200 Rack Requirements | 79

QFX5200 Cabinet Requirements | 80

QFX5200 Network Cable and Transceiver Planning | 82

Determining QFX5200 Optical Interface Support | 82

Cable Specifications for QSFP+ and QSFP28 Transceivers | 83

Understanding QFX Series Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion | 85

Signal Loss in Multimode and Single-Mode Fiber-Optic Cables | 85

Attenuation and Dispersion in Fiber-Optic Cable | 85

Calculating Power Budget and Power Margin for Fiber-Optic Cables | 86

How to Calculate Power Budget for Fiber-Optic Cable | 87

How to Calculate Power Margin for Fiber-Optic Cable | 87

QFX5200 Management Cable Specifications and Pinouts | 89

Cable Specifications for Console and Management Connections for the QFX Series | 89

RJ-45 Management Port Connector Pinout Information | 90

Console Port Connector Pinouts for the QFX Series | 90

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

Information | 91

USB Port Specifications for the QFX Series | 96

Initial Installation and Configuration

QFX5200 Installation Overview | 99

Overview of Installing the QFX5200 | 99

QFX5200 Installation Safety Guidelines | 100

Unpacking and Mounting the QFX5200 | 100

Unpacking a QFX5200 | 101

Mounting a QFX5200 in a Rack or Cabinet | 103

Before You Begin Rack Installation | 104

Four Post Installation Procedure for QFX5200-32C or QFX5200-32C-L | 105

Four Post Installation Procedure for QFX5200-48Y | 107

Connecting the QFX5200 to External Devices | 110

Connect a Device to a Network for Out-of-Band Management | 110

Connect a Device to a Management Console Using an RJ-45 Connector | 111

Connecting the QFX5200 to Power | 112

Connect the QFX5200 to Earth Ground | 113

Alternate Method to Ground QFX5200-32C-DC Systems | 115

Connecting AC Power to a QFX5200 | 116

Connecting DC Power to a QFX5200 | 119

Before You Begin | 120

Connecting DC Power to a QFX5200-32C-DC | 121

Connecting DC Power to a QFX5200-48Y | 124

Performing the Initial Software Configuration for QFX5200 Switches | 126

Maintaining Components

Maintaining QFX5200 Cooling System | 130

Removing a Fan Module from a QFX5200 | 130

Installing a Fan Module in a QFX5200 | 132

Maintaining QFX5200 Power System | 133

Removing a Power Supply from a QFX5200 | 134

Installing a Power Supply in a QFX5200 | 136

Maintaining Transceivers and Fiber Optic Cables on QFX5200 | 137

QFX5200-32C-L Time Allowance | 138

Remove a Transceiver | 138

Install a Transceiver | 141

Disconnect a Fiber-Optic Cable | 143

Connect a Fiber-Optic Cable | 144

How to Handle Fiber-Optic Cables | 145

Powering Off a QFX5200 | 146

Troubleshooting Hardware

Troubleshooting the QFX5200 | 152

QFX5200 Troubleshooting Resources Overview | 152

QFX Series Alarm Messages Overview | 153

vii

Chassis Alarm Messages | 153

Contacting Customer Support and Returning the Chassis or Components

Contact Customer Support to Obtain Return Material Authorization | 161

Returning the QFX5200 Chassis or Components | 162

Locating the Serial Number on a QFX5200 Device or Component | 162

Listing the Chassis and Component Details Using the CLI | 163

Locating the Chassis Serial Number ID Label on a QFX5200 | 165

Locating the Serial Number ID Labels on FRU Components | 166

How to Return a Hardware Component to Juniper Networks, Inc. | 166

Guidelines for Packing Hardware Components for Shipment | 167

Packing a QFX5200 Device or Component for Shipping | 168

Packing a QFX5200 Switch for Shipping | 168

Packing QFX5200 Components for Shipping | 169

Safety and Compliance Information

General Safety Guidelines and Warnings | 172

Definitions of Safety Warning Levels | 173

Qualified Personnel Warning | 176

Warning Statement for Norway and Sweden | 177

Fire Safety Requirements | 177

Fire Suppression | 177

Fire Suppression Equipment | 177

Installation Instructions Warning | 179

Chassis and Component Lifting Guidelines | 179

Restricted Access Warning | 181

Ramp Warning | 183

Rack-Mounting and Cabinet-Mounting Warnings | 184

Grounded Equipment Warning | 190

Laser and LED Safety Guidelines and Warnings | 191

General Laser Safety Guidelines | 191

viii

Class 1 Laser Product Warning | 192

Class 1 LED Product Warning | 193

Laser Beam Warning | 194

Radiation from Open Port Apertures Warning | 195

Maintenance and Operational Safety Guidelines and Warnings | 196

Battery Handling Warning | 197

Jewelry Removal Warning | 198

Lightning Activity Warning | 200

Operating Temperature Warning | 201

Product Disposal Warning | 203

General Electrical Safety Guidelines and Warnings | 204

Action to Take After an Electrical Accident | 205

Prevention of Electrostatic Discharge Damage | 206

AC Power Electrical Safety Guidelines | 207

AC Power Disconnection Warning | 209

DC Power Electrical Safety Guidelines | 210

DC Power Copper Conductors Warning | 211

DC Power Disconnection Warning | 212

DC Power Grounding Requirements and Warning | 214

DC Power Wiring Sequence Warning | 216

DC Power Wiring Terminations Warning | 219

Multiple Power Supplies Disconnection Warning | 222

TN Power Warning | 223

Agency Approvals and Compliance Statements for the QFX5200 and QFX5220 | 223

Agency Approvals for the QFX Series | 224

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 plan, install, perform initial software configuration, perform routine maintenance, and to troubleshoot QFX5200 switches.

After completing the installation and basic configuration procedures covered in this guide, refer to the Junos OS documentation for 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.

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

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]

xii

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.

Table 1: Notice Icons

xiii

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

Table 2: Text and Syntax Conventions (continued)

xiv

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)

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/

•

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/.

CHAPTER

Overview

QFX5200 System Overview | 18

QFX5200 Port Panels | 25

QFX5200 Switch Management | 33

QFX5200 Cooling System | 43

QFX5200 Power System | 52

QFX5200 System Overview

IN THIS SECTION

QFX5200 Switch Description | 18

QFX5200 Component Redundancy | 23

QFX5200 Field-Replaceable Units | 24

QFX5200 Switch Description

IN THIS SECTION

QFX5200 Hardware | 19

Benefits of QFX5200 Switches | 20

QFX5200-32C Channelization | 21

QFX5200-32C-L Channelization | 21

QFX5200-48Y Channelization | 21

System Software | 21

QFX5200 Hardware Component Overview | 22

The QFX5200 line offers line-rate, low-latency 10/25/40/50/100GbE switches for building large IP fabrics. QFX5200 Switches are an optimal choice for spine-and-leaf IP fabric deployments as well as metro use cases.

This topic covers:

QFX5200 Hardware

IN THIS SECTION

QFX5200-32C and QFX5200-32C-L Hardware | 19

QFX5200-48Y Hardware | 20

QFX5200 line of switches offer compact 1 U models that provide a line rate configuration packet performance, very low latency, and a rich set of Layer 3 features.

QFX5200-32C and QFX5200-32C-L Hardware

The QFX5200-32C and QFX5200-32C-L are compact 1 U standalone switches that provides a line rate configuration packet performance, very low latency, and a rich set of Layer 3 features. The routing engine and control plane are driven by the 1.8 Ghz quad-core Intel CPU with 16 GB of memory and two 32 GB solid-state drives (SSD) for storage. The QFX5200-32C models run standard Junos Operating System (OS); the QFX5200-32C-L models run Junos OS Evolved.

As shown in Figure 1 on page 19, the QFX5200-32C and QFX5200-32C-L are 100 Gigabit Ethernet top-of-rack switches that support both quad small form-factor pluggable (QSFP+), 100-Gbps QSFP+ (QSFP28) transceivers, and break out cables in the 32 QSFP28 sockets. The ports 0 through 31 can be configured as either uplinks or as access ports. The QSFP28 ports are configured as 100-Gigabit Ethernet ports by default, but can also be configured to speeds of 50, 40, 25, or 10-Gigabit Ethernet.

The QFX5200-32C and QFX5200-32C-L comes standard with redundant fans and redundant power supplies. Switches can be ordered with either ports-to-FRUs or FRUs-to-ports airflow. The QFX5200-32C is available with AC or DC power supplies; the QFX5200-32C-L is available only with AC power supplies.

Figure 1: QFX5200-32C Port Panel

The QFX5200-32C-L is supported as a standalone switch (Junos OS Evolved Release 18.3R1 and later).

The QFX5200-32C can be used as:

A standalone switch (Junos OS Release 15.1X53-D30 and later).

•

A member in an all QFX5200-32C Virtual Chassis (Junos OS Release 17.3R2 and later).

g050901

•

You can create an all QFX5200-32C Virtual Chassis with up to three members. The QFX5200-32C is used in all three member roles: primary RE, backup RE, and line card.

A satellite device in a Junos Fusion Provider Edge system (Junos OS Release 18.1R2 and later). A switch

•

in standalone mode must be converted to a satellite device.

QFX5200-48Y Hardware

The QFX5200-48Y is a flexible switch for environments with the need for native 25 Gbps port speeds. The 48 small form-factor pluggable 28 (SFP28) ports support 10 Gbps or native 25 Gbps speeds, and the 6 QSFP28 support either 40 Gbps or 100 Gbps speeds. The 48 SFP28 default to 10 Gigabit Ethernet and must be configured in groups of four ports to support 25 Gigabit Ethernet. You can alternate each group of four ports with either 10 Gbps or 25 Gbps across the 48 ports. For details on configuring the SFP28 ports, see “Port Groups” on page 30.

The 6 QSFP28 ports auto-detect the optic speed of transceivers and set the port speed accordingly. The six QSFP28 ports can be channelized when configured to 40 Gigabit Ethernet to 4 independent 10 Gigabit Ethernet ports.

The routing engine and control plane of the switch are driven by the 2.20 Ghz quad-core Intel CPU with 16 GB of memory and a 32 GB solid-state drive (SSD) for storage. The QFX5200-48Y provides an aggregate throughput of 3.6 Tbps (full duplex).

As shown in Figure 2 on page 20, the QFX5200-48Y has a 1 U form factor and comes standard with redundant fans and redundant power supplies. The switch can be ordered with either ports-to-FRUs or FRUs-to-ports airflow and with AC or DCpower supplies.

The QFX5200-48Y is supported on Junos OS Release 18.1R1 and later.

Figure 2: QFX5200-48Y Port Panel

Benefits of QFX5200 Switches

QFX5200 switches offer:

Future proof and investment protection

•

Open and standards based for multi-vendor networks

•

Support for Zero Touch Provisioning (ZTP) for simplified operation

•

QFX5200-32C Channelization

Starting in Junos OS Release 17.3R1, ports are channelized automatically by detecting the cable type. The mode and number of channels are set based on the channel link status:

When the port is configured for 40-Gigabit Ethernet and a 4x10G breakout cable is detected, the system

•

converts the port into 4 independent 10-Gigabit Ethernet ports

When the port is configured for 100-Gigabit Ethernet and a 2x50G breakout cable is detected, the

•

system converts the port into 2 independent 50-Gigabit Ethernet ports

When the port is configured for 100-Gigabit Ethernet and a 4x25G breakout cable is detected, the

•

system converts the port into 4 independent 25-Gigabit Ethernet ports

QFX5200-32C-L Channelization

Starting in Junos OS Evolved Release 18.3R1, ports can be channelized by configuration.

When the port is configured for 40-Gigabit Ethernet and a 4x10G breakout cable is detected, the system

•

converts the port into 4 independent 10-Gigabit Ethernet ports

When the port is configured for 100-Gigabit Ethernet and a 4x25G breakout cable is detected, the

•

system converts the port into 4 independent 25-Gigabit Ethernet ports

QFX5200-48Y Channelization

When one of the 6 QSFP28 ports are configured for 40-Gigabit Ethernet and a 4x10G breakout cable is detected, the system converts the port into 4 independent 10-Gigabit Ethernet ports. Channelization is not supported on the 48 SFP28 ports.

System Software

Customers who purchase a QFX5200-32C or QFX5200-48Y may either enable the Junos OS by purchasing a Junos OS Base Services license. Customers purchasing a QFX5200-32C-L enable Junos OS Evolved by purchasing a Junos OS Evolved Base Services license.

QFX Series devices use the Junos OS, which provides Layer 2 and Layer 3 switching, routing, and security services. The Junos image is installed on one of the 32 GB solid state drives.The Junos OS Evolved software running on the QFX5200-32C-L does not support Layer 2 features.

For more information about which features are supported on QFX Series devices, see Feature Explorer.

You manage the switch using the Junos OS command-line interface (CLI), accessible through the console and out-of-band management ports on the device.

QFX5200 Hardware Component Overview

The QFX5200 supports the components in listed in alphabetic order.

Table 3: QFX5200 Hardware Components

CLI OutputSpare Juniper Model NumberChassis ModelComponent

Chassis

Fan module

QFX5200-32C

QFX5200-32C-L

QFX5200-48Y

QFX5200-32C and QFX5200-32C-L

QFX5200-48Y

Not available

QFX5200-32C-CHAS

QFX5200-48Y-CHAS

QFX5200-32C-FANAFI (FRUs to ports airflow)

QFX5200-32C-FANAFO (Ports to FRUs airflow)

QFX520048Y-FAN-AI (FRUs to ports airflow)

QFX520048Y-FAN-AO (Ports to FRUs airflow)

QFX5200-32C-32Q

QFX5200-32C-L

QFX5200-48Y

Fan tray n fan-n Back to Front Airflow - AFI

Fan tray n fan-n Front to Back Airflow - AFO

Fan tray n fan-n Back to Front Airflow - AFI

Fan tray n fan-n Front to Back Airflow - AFO

Table 3: QFX5200 Hardware Components (continued)

CLI OutputSpare Juniper Model NumberChassis ModelComponent

Power supplies

QFX5200-32C and QFX5200-32C-L

QFX5200-32C

QFX5200-48Y

JPSU-850W-AC-AFI (FRUs to ports airflow)

JPSU-850W-AC-AFO (Ports to FRUs airflow)

JPSU-850W-DC-AFI (FRUs to ports airflow)

JPSU-850W-DC-AFO (Ports to FRUs airflow)

QFX520048Y-APSU-AI (FRUs to ports airflow)

QFX520048Y-APSU-AO (Ports to FRUs airflow)

QFX520048Y-DPSU-AI (FRUs to ports airflow)

QFX520048Y-DPSU-AO (Ports to FRUs airflow)

AC AFI 850W PSU

AC AFO 850W PSU

DC AFI 850W PSU

DC AFO 850W PSU

AC AFI 650W PSU

AC AFO 650W PSU

DC AFI 650W PSU

DC AFO 650W PSU

QFX5200 Component Redundancy

The following hardware components provide redundancy on a QFX5200 switch:

Power supplies—The QFX5200 switches have one or two power supplies. Each power supply provides

•

power to all components in the switch. If two power supplies are installed, the two power supplies provide full power redundancy to the device. If one power supply fails or is removed, the second power supply balances the electrical load without interruption.

To provide power redundancy to the system both power supplies must be installed. Connect power source feed A to one power supply and power source feed B to the second power supply.

CAUTION: Do not connect feed A and feed B to the same power supply input

terminal.

Cooling system—The QFX5200-32C and QFX5200-32C-L switch models have five fan modules. The

•

QFX5200-48Y switch models has six fan modules. If a fan module fails and is unable to keep the QFX5200 switch within the desired temperature thresholds, chassis alarms occur and the QFX5200 switch can shut down.

QFX5200 Field-Replaceable Units

Field-replaceable units (FRUs) are components that you can replace at your site. The QFX5200 device FRUs are hot-insertable and hot-removable: you can remove and replace one of them without powering off the switch or disrupting the switching function.

CAUTION: Replace a failed power supply with a new power supply within one minute

of removal to prevent chassis overheating. The switch continues to operate with only one power supply running. Replace a failed fan module with a new fan module within one minute of removal to prevent chassis overheating. Do not operate the switch with missing FRUs for longer than one minute.

Table 4 on page 24 lists the FRUs for the QFX5200 device and actions to take before removing them.

Table 4: FRUs in a QFX5200 Switch

Required ActionFRU

None.Power supplies

None.Fan modules

Optical transceivers

None. We recommend that you disable the interface using the set interfaces interface-name disable command before you remove the transceiver. See

“Disconnect a Fiber-Optic Cable” on page 143

NOTE: If you have a Juniper 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.

RELATED DOCUMENTATION

Installing and Removing QFX5200 Hardware Components

QFX5200 Cooling System | 43 QFX5200 Power System | 52

QFX5200 Port Panels

IN THIS SECTION

QFX5200-32C and QFX5200-32C-L Port Panel | 25

QFX5200-48Y Port Panel | 29

QFX5200-32C and QFX5200-32C-L Port Panel

IN THIS SECTION

Network Ports | 26

Channelizing Interfaces | 27

Network Port LEDs | 27

The port panel of the QFX5200-32C and QFX5200-32C-L supports port configuration speeds of 100, 50, 40, 25, or 10 Gigabit Ethernet. The QFX5200-32C and QFX500-32C-L uses 28-Gbps quad small-form factor pluggable plus (QSFP28) sockets that are configured as 100 Gigabit Ethernet ports by default. Any of the 32 ports 0 through 31 can be configured as uplinks or as access ports.

Figure 3 on page 26 shows the port panel of the QFX5200-32C and QFX5200-32C-L.

Figure 3: QFX5200-32C and QFX5200-32C-L Port Panel

4—1— 32 QSFP28 portsRJ45 connection to grand master clock

5—2— Electrostatic discharge (ESD) terminal1 pulse per second (PPS) output connection for

clocking messages

3—Output clock at 10 Mhz

This topic describes:

Network Ports

The QFX5200-32C and QFX5200-32C-L network ports, ( 0 to 31) support:

100 Gbps QSFP28 transceivers

•

40 Gbps QSFP+ transceivers

•

100 Gbps active optical cables (AOC)

•

NOTE: For interoperability with other QFX Series switches, ensure auto-negotiation on the

QFX5200-32C is disabled.

40 Gbps AOC

•

QSFP28 direct attach copper (DAC) cables

•

QSFP+ DAC cables

•

(QFX5200-32C only) QSFP+ to QSFP+ direct attach copper break out (DACBO) cables (100 Gbps breaks

•

out to 50 Gbps or 25 Gbps)

(QFX5200-32C only) QSFP+ to SFP+ DACBO cables (40 Gbps breaks out to 10 Gbps)

•

Starting in Junos OS Release 19.3R1, you can also use a QSFP+ to SFP+ adapter (QSA) in the QSFP+ ports

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Bi-colored LEDs

to provide either 40 Gigabit Ethernet or 4x10 Gigabit Ethernet speeds.

Channelizing Interfaces

For downstream traffic, the QFX5200-32C has 32 physical or 128 logical ports (32 x 4) that can be used for port channelization. The 100 Gigabit Ethernet ports can be channelized using breakout cables either to 2 independent downstream 50 Gigabit Ethernet or to 4 independent 25 Gigabit Ethernet ports. The default 100 Gigabit Ethernet ports can also be configured as 40 Gigabit Ethernet and in this configuration can either operate as dedicated 40 Gigabit Ethernet ports or can be channelized to 4 independent 10 Gigabit Ethernet ports using breakout cables.

The QFX5200-32C ports support auto-channelization starting in Junos OS Release 15.1X53-D230.

The QFX5200-32C-L does not support channelization.

Network Port LEDs

The Link/Activity LED configuration for QFX5200-32C and QFX5200-32C-L switches use bi-colored LEDs. The link LED indicates link activity or a fault. See Table 5 on page 27.

Table 5: QFX5200-32C and QFX5200-32C-L Access Port and Uplink LED Locations

LocationIndicatorsPort Type

QSFP28 and QSFP+

Speed Link Status Channelization

Figure 4: QFX5200-32C and QFX5200-32C-L Port LEDs

Table 6 on page 28 describes how to interpret the QSFP28 port LEDs.

Table 6: Network Port LEDs on QSFP28 Ports on a QFX5200-32C and QFX5200-32C-L Switch

QFX5200-32C and QFX5200-32C-L DescriptionStateColor

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

When configured for 25-Gigabit Ethernet, the LED remains unlit only if all four of the 25-Gigabit Ethernet QSFP+ breakout links are down.

Green

steadily

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

When configured for 25-Gigabit Ethernet, the LED is lit green when at least one of the four 25-Gigabit Ethernet QSFP+ breakout links is established.

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

When configured for 25-Gigabit Ethernet, the LED is lit green when at least one of the four 25-Gigabit Ethernet QSFP+ breakout links is established.

The beacon is enabled on the port.BlinkingAmber

As shown in Table 7 on page 28, there are four bi-color LEDs for each QSFP+ port. The first LED is used and the remaining LEDs are not used when the interface is configured for 100-Gigabit Ethernet and connected to a QSFP28 transceiver. All four LEDs are used when the interface is configured for 25-Gigabit Ethernet and the port is connected using an optical splitter cable or a copper DACBO cable.

Table 7 on page 28 describes how to interpret the QSFP+ LEDs.

Table 7: Network Port Link/Activity LEDs on QSFP+ Ports on a QFX5200-32C and QFX5200-32C-L

DescriptionStateColor

OffUnlit

On steadilyGreen

Blinking

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

NOTE: When configured for 10-Gigabit Ethernet, the LED remains unlit only

if all four of the 10-Gigabit Ethernet SFP+ breakout links are down.

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

NOTE: When configured for 10-Gigabit Ethernet, the LED is lit green when

at least one of the four 10-Gigabit Ethernet SFP+ breakout links is established.

A link is established, and there is link activity.

NOTE: When configured for 10-Gigabit Ethernet, the LED is lit green when

at least one of the four 10-Gigabit Ethernet SFP+ breakout links is established.

Table 7: Network Port Link/Activity LEDs on QSFP+ Ports on a QFX5200-32C and QFX5200-32C-L (continued)

DescriptionStateColor

All four LEDs blink to indicate the beacon function was enabled on the port.BlinkingAmber

QFX5200-48Y Port Panel

IN THIS SECTION

Network Ports | 30

Port Groups | 30

Network Port LEDs | 32

The port panel of the QFX5200-48Y supports port configuration speeds of 100 or 40 Gigabit Ethernet, and 25 or 10 Gigabit Ethernet. The QFX5200-48Y has 48 small form-factor pluggable 28 (SFP28) ports (0 through 47) that can be configured as either 10 Gigabit Ethernet or 25 Gigabit Ethernet. The QFX5200-48Y also has six quad small form-factor pluggable (QSFP28) ports (48 through 53 that can be configured as either 100 Gigabit Ethernet or 40 Gigabit Ethernet. The SFP28 ports default to 10 Gigabit Ethernet but can be configured in groups of four ports to 25 Gbps speeds. The QSFP28 ports auto-sense the speed of inserted optics and configure the port to the appropriate speed for that transceiver. See

Figure 5 on page 30.

Figure 5: Port Panel of QFX5200-48Y

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56 4

4—RJ45 console

Network Ports

5—1— 2 QSFP28 ports48 SFP28 ports

6—2— USB port4 QSFP28 ports

7—3— System status LEDsRJ45 management port

The QFX5200-48Y ports, (0 to 47) are normally used as access ports. They support:

10 Gbps SFP+ transceivers

•

10 Gbps direct attach copper (DAC) cables

•

25 Gbps SFP28 transceivers

•

25 Gbps SFP28 DAC cables

•

The QFX5200-48Y ports, (48 to 53) are normally used as uplinks. They support:

25 Gbps active optical cables (AOC)

•

40 Gbps QSFP+ transceivers

•

40 Gbps DACBO cables (40 Gbps to 10 Gbps)

•

100 Gbps QSFP28 transceivers

•

100 Gbps AOC

•

Port Groups

The 48 SFP28 ports default to 10 Gigabit Ethernet but can be configured to 25 Gigabit Ethernet by port groups. The SFP28 ports are divided into 12 port groups, with four contiguous ports in each port group. Each port group can be configured to either 10 Gbps or 25 Gbps speeds, but mixing port speeds within a port group is not allowed. See Table 8 on page 31

Table 8: Available Port Groups for QFX5200-48Y

Port Groups

0 – 3

4 – 7

8 – 11

12 – 15

16 – 19

29 – 23

24 – 27

28 – 31

32 – 35

36 – 39

40 – 43

44 – 47

Use the set chassis fpc command to set an SFP28 port group to either 10 Gbps or 25 Gbps speeds. You will receive a warning message that you are changing the port configuration for the four ports. Committing the change does cause the FPC to reboot. For example, to change ports 0 through 3 to 25 Gbps from the default 10 Gbps, issue the following command:

[edit]

user@host# set chassis fpc 0 pic 0 port 0 speed 25g

user@host# commit

warning: 25g config will be applied to ports 0 to 3

{master:0}[edit] root@sw-symphony-03# commit

configuration check succeeds

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1 2

commit complete

Network Port LEDs

The QFX5200-48Y uses bi-colored LEDS to indicate link and activity on the port. SFP28 ports have a single green/amber LED. QSFP28 ports have four blue/amber ports. Only the first (left-most) LED is used. See Table 9 on page 32 and Table 10 on page 33.

NOTE: The up and down arrow LEDs for QSFP28 ports 48, 49, 51, and 52 are not used.

Table 9: QFX5200-48Y Access Port and Uplink LED Locations

LocationIndicatorsPort Type

QSFP28

SFP28

Speed Link Status

Figure 6: QFX5200-48Y QSFP28 Port LEDs

Figure 7: QFX5200-48Y SFP28 Port LEDs

Table 10: Network Port LEDs on a QFX5200-48YSwitch

Transceivers Supported

LED DescriptionStateColor

OffUnlitSFP28

Amber

steadily

OffUnlitQSFP28

Green

steadily

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

A link is established for 10 Gbps or 25 Gbps, but there is no activity.On

A link is established for 10 Gbps or 25 Gbps and there is link activity.Blinking

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

A link is established for 40 Gbps or 100 Gbps, but there is no activity.On

A link is established for 40 Gbps or 100 Gbps and there is link activity.Blinking

RELATED DOCUMENTATION

QFX5200 Field-Replaceable Units | 24

Channelizing Interfaces on QFX5200-32C Switches

Installing and Removing QFX5200 Hardware Components

QFX5200 Switch Management

IN THIS SECTION

QFX5200 Management Panel Overview | 34

QFX5200 Chassis Status LEDs | 38

QFX5200 Management Panel Overview

IN THIS SECTION

QFX5200-32C and QFX5200-32C-L Management Panel | 34

QFX5200-32C and QFX5200-32C-L Management Port and Console Port LEDs | 36

QFX5200-48Y Management Panel | 36

QFX5200-48Y Management Port LEDs | 37

The management panel allows you to have a management channel into the switch that is separate from production traffic. The management panel is found on the Field Replaceable Unit (FRU) end of the QFX5200-32C and QFX5200-32C-L and on the port panel of the QFX5200-48Y.

This topic covers:

QFX5200-32C and QFX5200-32C-L Management Panel

The management panel of the QFX5200-32C and QFX5200-32C-L is found on the Field Replaceable Unit (FRU) end of the switch next to the fan modules. See Figure 8 on page 34 to locate the management panel.

Figure 8: QFX5200-32C and QFX5200-32C-L, FRU End

3—1— Power supply unitsManagement panel

2—Fan modules

Figure 9 on page 35 describes the connections and components of the QFX5200-32C and QFX5200-32C-L

management panel.

Figure 9: Management Panel Components on QFX5200-32C and QFX5200-32C-L

4—1— USB portStatus LEDs

QFX5200-32C—Use C0 for the em0 interface using either RJ-45 (1000 Base-T) or fiber SFP connections. QFX5200-32C-L –use C0 for the re0:mgmt-0 management interface.

3—RJ-45 console port (CON) )

5—2— For QFX5200-32C only–em1–SFP management

Ethernet port (C1) Cage (socket for either 1 GbE copper SFP or fiber SFP).QFX5200-32C-L does not support a second management interface.

The management panel consists of the following components:

Chassis status LEDs

•

Switch product number

•

Management Ports C0 and C1

•

C0–Use the RJ-45 connectors for 10/100/1000 BaseT or to cable a virtual management Ethernet

•

(VME) interface for spine members in a VCF. See “Connect a Device to a Network for Out-of-Band

Management” on page 110.

NOTE: For product SKUs with C0 available in both copper and fiber, the copper C0 has

priority over fiber C0.

C1–Use the SFP connector for 1000 BaseX on QFX5200-32C only.

•

USB port for image updates.

•

Console port (RJ-45) to support RS-232 serial ports. The LEDs above the port indicate status and link.

•

QFX5200-32C and QFX5200-32C-L Management Port and Console Port LEDs

The management ports and console port on a QFX5200-32C and QFX5200-32C-L have two LEDs that indicate link status and link activity. The management ports are labeled C0 for 10/100/1000 BASE-T and C1 for 10/100/1000 BASE-T and SFP 1000 BASE-X connections. The left LED indicates status; the right LED indicates link/activity.

Table 11 on page 36 describes the management ports and Table 12 on page 36 the console LED.

Table 11: Management Ports LEDs on a QFX5200-32C and QFX5200-32C-L

DescriptionStateColorLED

OffUnlitLink/Activity

No link is established, there is a fault, or the link is down.

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

A link is established, and there is link activity.Blinking or flickering

Either the port speed is 10 M or the link is down.OffUnlitStatus

The port speed is 1000 M.On steadilyGreen

The port speed is 100 M.On steadilyAmber

Table 12: Console Port LED on a QFX5200-32C and QFX5200-32C-L

DescriptionStateColorLED

The console is off.OffUnlitStatus

The console is on.On steadilyGreen

QFX5200-48Y Management Panel

The management panel of the QFX5200-48Y is found on the port panel next to right of the quad small-form factor pluggable plus (QSFP28) ports. See Figure 10 on page 37 to locate the management panel.

Figure 10: QFX5200-48Y Port Panel

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56 4

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5—1— 2 QSFP28 ports48 SFP28 ports

6—2— USB port4 QSFP28 ports

7—3— System status LEDsRJ45 management port

4—RJ45 console

Figure 11 on page 37 describes the connections and components of the QFX5200-48Y management

panel.

Figure 11: Management Panel Components on QFX5200-48Y

2—1— RJ-45 console port (Console)em0–RJ-45 (1000 BASE-T) management Ethernet

port (Mgmt)

QFX5200-48Y Management Port LEDs

The management port and console port on a QFX5200-48Y have two LEDs that indicate link status and link activity. The management port is labeled Mgmt for 10/100/1000 BASE-T connections. The left LED indicates status; the right LED indicates link/activity.

Table 13 on page 38 describes the management port LEDs.

Table 13: Management Port LEDs on a QFX5200-48Y Switch

DescriptionStateColorLED

OffUnlitLink/Activity

Table 14: Console Port LED on a QFX5200-48Y

No link is established, there is a fault, or the link is down.

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

A link is established, and there is link activity.Blinking or flickering

The link is down.OffUnlitStatus

The link is up.On steadilyGreen

DescriptionStateColorLED

The console is off.OffUnlitStatus

The console is on.On steadilyGreen

QFX5200 Chassis Status LEDs

IN THIS SECTION

QFX5200-32C and QFX5200-32C-L Chassis Status LEDs | 39

QFX5200-48Y Chassis Status LEDs | 41

The QFX5200 has a series of LEDs that indicate system status. The QFX5200-32C and QFX5200-32C-L have four chassis status LEDs on the management panel; the QFX5200-48Y has five chassis status LEDs on the port panel.

This topic includes:

QFX5200-32C and QFX5200-32C-L Chassis Status LEDs

The QFX5200-32C and QFX5200-32C-L have four status LEDs on the FRU side of the chassis, next to the management ports (see Figure 12 on page 39).

Figure 12: Locating Chassis Status LEDs on a QFX5200-32C and QFX5200-32C-L

4—1— USB portStatus LEDs

em0–RJ-45 (10/100/1000 BASE-T) management Ethernet port (C0)

3—RJ-45 console port (CON) )

5—2— em1–SFP management Ethernet port (C1)

Cage (socket for either 10/100/1000 Base-T RJ45 SFP or 1GbE fiber SFP)

Table 15 on page 40 describes the chassis status LEDs on a QFX5200-32C and QFX5200-32C-L, their

colors and states, and the status they indicate. You can view the colors of the three LEDs remotely through the CLI by issuing the operational mode command show chassis lcd.

Table 15: Interpreting Chassis Status LEDs on a QFX5200-32C and QFX5200-32C-L

DescriptionStateColorName

OffUnlitALM–Alarm or beacon

On steadilyRed

On steadilyAmber

The switch is halted or there is no alarm.

A major hardware fault has occurred, such as a temperature alarm or power failure, and the switch has halted. Power off the QFX5200-32C or QFX5200-32C-L by setting the AC power source outlet to the OFF (O) position, or unplugging the AC power cords. Correct any voltage or site temperature issues, and allow the switch to cool down. Power on the QFX5200-32C and QFX5200-32C-L.Monitor the power supply and fan LEDs to help determine where the error is occurring.

A minor alarm has occurred, such as a software error. Power off the QFX5200 or QFX5200-32C-L by setting the AC power source outlet to the OFF (O) position, or unplugging the AC power cords. Power on the QFX5200-32C or QFX5200-32C-L and monitor the status LEDs to ensure that Junos OS boots properly.

QFX5200-32C Virtual Chassis

The switch is powered off or halted.OffUnlitSYS–System

On steadilyGreen

Junos OS for QFX Series is loaded on the switch.

The switch is standalone.OffUnlitMST–Primary RE in a

The switch is operating as the primary RE in a QFX5200-32C Virtual Chassis.

Table 15: Interpreting Chassis Status LEDs on a QFX5200-32C and QFX5200-32C-L (continued)

g050918

DescriptionStateColorName

OffUnlitID–Identification

BlinkingBlue

The beacon feature is not enabled on the switch. This feature is enabled using the request chassis beacon command.

The beacon feature is enabled on the switch. This feature is enabled using the request chassis beacon command.

QFX5200-48Y Chassis Status LEDs

The QFX5200-48Y switch has five status LEDs on the port side of the chassis, (see Figure 13 on page 41.)

Figure 13: Locating Chassis Status LEDs on QFX5200-48Y

1—Chassis status LEDs

Table 16 on page 42 describes the chassis status LEDs on a QFX5200-48Y, their colors and states, and

the status they indicate.

Table 16: Interpreting Chassis Status LEDs on a QFX5200-48Y

DescriptionStateColorName

Power supply not present.OffUnlitPS1

(Power Supply Status)

(Diagnostic)

Power supply is working correctly.On steadilyGreen

Power supply is faultyOn steadilyAmber

Power supply not present.OffUnlitPS2

Power supply is working correctly.On steadilyGreen

Power supply present but faulty.On steadilyAmber

System self-diagnostic test successfully completed.On steadilyGreenDiag

On steadilyAmber

System self-diagnostic test has detected a fault. (Fan, thermal or any interface fault.)

The switch is powered off.OffUnlitFAN

Fan operating normally.On steadilyGreen

Fan present but faulty.On steadilyAmber

RELATED DOCUMENTATION

show chassis alarms

request chassis beacon

Not a switch to trace its location.OffUnlitLOC

FlashingAmber

Flashing by remote management command. Assists the technician in finding the right device for service in the rack.

QFX5200 Cooling System

IN THIS SECTION

QFX5200 Cooling System Description | 43

QFX5200-32C and QFX5200-32C-L Fan Module LED | 50

QFX5200 Cooling System Description

IN THIS SECTION

Fan Modules | 44

Do Not Install Components with Different Airflow or Wattage in the Switch | 49

The cooling system in an QFX5200-32C and QFX5200-32C-L consists of five fan modules and a single fan in each power supply; QFX5200-48Y cooling system consists of six fan modules and a single fan in each power supply, see Figure 14 on page 44 and Figure 15 on page 44. The switch can be set up to work in one of two airflow directions:

Airflow In–Air comes into the switch through the vents in the field-replaceable units (FRUs).

•

Airflow Out–Air comes into the switch through the vents in the port panel.

•

CAUTION: Airflow In and Airflow Out fans and power supplies cannot be mixed in

the same chassis.

Figure 14: QFX5200-32C and QFX5200-32C-L FRU Panel

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1 1

3—1— Power suppliesManagement panel

2—Fan modules

Figure 15: QFX5200-48Y FRU Panel

2—1— Fan modulesPower supplies

Fan Modules

The fan modules in QFX5200 devices are hot-insertable and hot-removable field-replaceable units (FRUs). These fan modules are designed for one of the two available airflow directions (Airflow In or Airflow Out). The fan modules are also color-coded for the airflow direction as well. The fan modules are installed in the fan module slots on the FRU panel.

The QFX5200-32C and QFX5200-32C-L fan modules have five fan modules numbered 0 through 4 when counting from left to right.

The QFX5200-48Y fan modules have six fan modules numbered 0 through 5 when counting from left to right.

Figure 16 on page 45 and Figure 17 on page 45 shows the fan modules.

Figure 16: QFX5200-32C and QFX5200-32C-L Fan Modules

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Serial number ID label

Figure 17: QFX5200-48Y Fan Module

You remove and replace a fan module from the FRU end of the chassis. The switch continues to operate for a limited period of time (30 seconds) during the replacement of the fan module without thermal shutdown.

The fan modules are available in four product SKUs that have different airflow directions—FRU-to-port airflow and port-to-FRU airflow On legacy switches or switches with LCDs, this airflow is also called front-to-back and back-to-front. Table 17 on page 46 lists the available fan module product SKUs and the direction of airflow in them:

NOTE: All fan modules must be installed for optimal operation of the switch.

Table 17: Fan Modules in QFX5200 Switches

NOTE: Used for both

QFX5200-32C-AFI and QFX5200-32C-LAFI

NOTE: Used for both

QFX5200-32C-AFO and QFX5200-32C-LAFO

Label on the Fan ModuleAirflow DiagramFan Module

AIR INFigure 18 onpage 47QFX5200-32C-FANAFI

AIR OUTFigure 19 on page 48QFX5200-32C-FANAFO

Color of Fan Module

Juniper Azure Blue

Juniper Gold

Direction of Airflow in the Fan Module

FRU-to-port, that is, air comes in from the end of the switch with the fans; air exhausts from the switch end with ports (also known as back-to-front airflow).

Port-to-FRU, that is, air comes in through vents on the end with ports; air exhausts out the end with the fans (also known as front-to-back airflow).

Power Supplies

You must install only power supplies that have AIR IN labels in switches in which the fan modules have AIR IN labels.

You must install only power supplies that have AIR OUT labels in switches in which the fan modules have

AIR OUT

labels.

BlueAIR INFigure20 on page 48QFX5200-48Y-FAN-AFI

FRU-to-port, that is, air comes in from the end of the switch with the fans; air exhausts from the switch end with ports (also known as back-to-front airflow).

You must install only power supplies that have AIR IN labels in switches in which the fan modules have

AIR IN labels.

Table 17: Fan Modules in QFX5200 Switches (continued)

Label on the Fan ModuleAirflow DiagramFan Module

Color of Fan Module

RedAIR OUTFigure 21 on page 49QFX5200-48Y-FAN-AFO

Direction of Airflow in the Fan Module

Port-to-FRU, that is, air comes in through vents on the end with ports; air exhausts out the end with the fans (also known as front-to-back airflow).

Power Supplies

You must install only power supplies that have AIR OUT labels in switches in which the fan modules have

AIR OUT

labels.

In data center deployments, position the switch in such a manner that the AIR IN labels on switch components are next to the cold aisle, and AIR OUT labels on switch components are next to the hot aisle.

Figure 18: Air In Airflow Through QFX5200-32C and QFX5200-32C-L

Figure 19: Air Out Airflow Through QFX5200-32C and QFX5200-32C-L

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FRUsPor t s

Figure 20: Air In Airflow Through QFX5200-48Y

Figure 21: Air Out Airflow Through QFX5200-48Y

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FRUsPor t s

Do Not Install Components with Different Airflow or Wattage in the Switch

Do not mix power supplies with different airflow. If the power supplies are color-coded, ensure they are either all match. Likewise, ensure that all fan modules have the same airflow and match the airflow of the power supplies. Fan modules are also color-coded that match the power supplies.

Mixing components with different airflows in the same chassis hampers the performance of the cooling system of the switch and leads to overheating of the chassis.

CAUTION: The system raises an alarm if a fan module fails or if the ambient

temperature inside the chassis rises above the acceptable range. If the temperature inside the chassis rises above the threshold temperature, the system shuts down automatically.

Do not mix fan modules with different wattage. Only use the replacement fan modules that are designed for use with your product number. See Table 17 on page 46 for the correct part number for your QFX5200 device.

CAUTION: Do not mix AC and DC power supplies in the same QFX5200-32C or

QFX5200-32C-L chassis. You may mix AC and DC power supplies in the same QFX5200-48Y chassis, but the fans and power supplies must have the same airflow direction. Also note that load sharing is not the same for AC and DC power supplies.

However if you need to convert a QFX5200 device to have a different airflow, you can change the airflow pattern. To convert an AIR IN product SKU to an AIR OUT product SKU or an AIR OUT product SKU to

a AIR IN product SKU, you must replace all of the fans and power supplies at one time to use the new direction. The system raises an alarm when the system is converted, which is normal.

QFX5200-32C and QFX5200-32C-L Fan Module LED

On the QFX5200-32C and QFX5200-32C-L switches the fan module LEDs are located on the chassis next to the fan module slot. QFX5200-48Y fan modules do not have LED indicators. Figure 22 on page 50 shows the location of the fan module LEDs next to the fan module on a QFX5200-32C and QFX5200-32C-L switch.

Figure 22: Fan Module LED in a QFX5200-32C or QFX5200-32C-L Switch

1—Fan module LED

Table 18 on page 50 describes the function of the fan tray LED.

Table 18: Fan Tray LED in a QFX5200-32C or QFX5200-32C-L Switch

DescriptionStateColorName

On steadilyGreenFan

BlinkingAmber

The fan module is operating normally. The system has verified that the module is engaged, that the airflow is in the correct direction, and that the fan is operating correctly.

An error has been detected in the fan module. Replace the fan module as soon as possible. Either the fan has failed or it is seated incorrectly. To maintain proper airflow through the chassis, leave the fan module installed in the chassis until you are ready to replace it.

Under normal operating conditions, the fan modules operate at a moderate speed. Temperature sensors in the chassis monitor the temperature within the chassis.

The system raises an alarm if a fan module fails or if the ambient temperature inside the chassis rises above the acceptable range. If the temperature inside the chassis rises above the threshold temperature, the

system shuts down automatically. Use the show chassis fan and on Junos OS Evolved systems the show system alarms operational CLI command. For example:

user@host> show chassis fan

Item Status % RPM Measurement Fan Tray 0 Fan 1 Ok 104% 19081 RPM Fan Tray 0 Fan 2 Ok 107% 22500 RPM Fan Tray 1 Fan 1 Ok 105% 19217 RPM Fan Tray 1 Fan 2 Ok 103% 21686 RPM Fan Tray 2 Fan 1 Ok 104% 19014 RPM Fan Tray 2 Fan 2 Ok 104% 21951 RPM Fan Tray 3 Fan 1 Ok 104% 18947 RPM Fan Tray 3 Fan 2 Ok 102% 21428 RPM Fan Tray 4 Fan 1 Ok 101% 18556 RPM Fan Tray 4 Fan 2 Ok 101% 21259 RPM

For Junos OS Evolved systems only:

user@host> show system alarms

8 alarms currently active Alarm time Class Description 2018-10-11 15:55:58 UTC Major Fan Tray 0 Failure 2018-10-11 15:55:58 UTC Major Fan Tray 1 Failure 2018-10-11 15:55:58 UTC Major Fan Tray 2 Failure 2018-10-11 15:55:58 UTC Major Fan Tray 3 Failure 2018-10-11 15:55:58 UTC Major Fan Tray 4 Failure

RELATED DOCUMENTATION

Maintaining QFX5200 Cooling System | 130

QFX5200 Power System

IN THIS SECTION

QFX5200 AC Power Supply Description | 52

QFX5200 AC Power Specifications | 54

QFX5200 Power Cord Specifications | 55

QFX5200 AC Power Supply LEDs | 57

QFX5200 DC Power Supply Description | 59

QFX5200 DC Power Specifications | 61

QFX5200 DC Power Supply LEDs | 62

QFX5200 AC Power Supply Description

The two power supplies in QFX5200 are hot-removable and hot-insertable field-replaceable units (FRUs). The power supplies are installed in the switch at the factory. You can install replacement power supplies from the management panel without powering off the switch or disrupting the switching function. QFX5200 switches can operate with one PSU, but two power supplies are required to run without error messages and to have redundancy. See Figure 23 on page 53 and Figure 24 on page 53 for examples of QFX5200 AC power supplies.

The AC power supply in QFX5200-32C and QFX5200-32C-L switches is 850 W; the AC power supply in QFX5200-48Y switches is 650 W. Be sure to use the correct power supply for your chassis product SKU (see Table 19 on page 54).

CAUTION: Do not mix power supplies with different airflow or different wattage. The

system raises an alarm when a power supply having a different airflow or wattage is inserted into the chassis.

You may mix AC and DC power supplies with the same airflow in QFX5200-48Y, but load sharing is different between the two designs.

Figure 23: 850 W AC Power Supply for QFX5200-32C and QFX5200-32C-L

g050255

1 2

g050906

3—1— AC appliance inletHandle

4—2— Ejector leverSecurity latch

Figure 24: 650 W AC Power Supply for QFX5200-48Y

The power supply provides FRU-to-port or port-to-FRU airflow depending on the product SKU you purchase. The power supplies have color-coded indicators to indicate the airflow direction. Either the PSU handle or the panel behind the handle are color-coded. See Figure 25 on page 53 for an example of the QFX5200-32C and QFX5200-32C-L power supplies and Table 19 on page 54 to determine the airflow of the PSU.

Figure 25: Power Supply Handle Detail

1—Fan icon on handle

Table 19: Color Indicators for Airflow Direction

and QFX5200-32C-L

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 change out all the fans and power supplies at one time to use the new direction.

Color IndicatorAirflow DirectionPart NumberModel

Juniper Azure Blue handleAirflow In (FRU-to port)JPSU-850W-AC-AFIQFX5200-32C

Juniper Gold handleAirflow Out (port-to-FRU)JPSU-850W-AC-AFO

Blue panelAirflow InQFX520048Y-APSU-AIQFX5200-48Y

Red panelAirflow OutQFX520048Y-APSU-AO

To supply sufficient power, terminate the DC input wiring on a facility DC source that is capable of supplying a minimum of 7 A at –48 VDC.

To avoid electrical injury, carefully follow instructions in “Connecting AC Power to a QFX5200” on page 116.

QFX5200 AC Power Specifications

Table 20 on page 54 describes the AC power specifications for a QFX5200.

Table 20: AC Power Specifications for a QFX5200

Item

AC input voltage

Specification

Operating range:

100 / 240 VAC

•

50–60 HzAC input line frequency

Table 20: AC Power Specifications for a QFX5200 (continued)

Item

Specification

QFX5200-32C and QFX5200-32C-LAC input current rating

QFX5200-48Y

QFX5200 Power Cord Specifications

4.5 A at 100–120 VAC

2.0 A at 200–240 VAC

7.8 A at 100–120 VAC

3.8 A at 200-240 VAC

380 WQFX5200-32C and QFX5200-32C-LTypical power consumption

382 WQFX5200-48Y

480 WQFX5200-32C and QFX5200-32C-LMaximum power consumption

430 WQFX5200-48Y

Detachable AC power cords are shipped with the chassis, if you include them as part of your order. The coupler is type C13 as described by International Electrotechnical Commission (IEC) standard 60320. The plug end of the power cord fits into the power source outlet that is standard for your geographical location.

NOTE: In North America, AC power cords must not exceed 14.75 feet (approximately 4.5 meters)

in length, to comply with National Electrical Code (NEC) Sections 400-8 (NFPA 75, 5-2.2) and 210-52, and Canadian Electrical Code (CEC) Section 4-010(3). The cords that can be ordered for the QFX Series switches are in compliance.

Table 21 on page 56 lists AC power cord specifications provided for each country or region.

Table 21: AC Power Cord Specifications

g050616

g021274

Australia

Brazil

China

Europe (except Italy, Switzerland, and United Kingdom)

Israel

Italy

Electrical SpecificationsCountry/Region

50 Hz

250 VAC, 10 A, 50 Hz

50 Hz

250 VAC, 10 A, 50 Hz

50 Hz

BR/3

IL/3G

Shipped Juniper Model NumberPlug Standards

Spare Juniper Model Number

CBL-EX-PWR-C13-AUCG_CBL-C13-06-AUAS/NZ3109-1996250 VAC, 10 A,

CBL-PWR-C15M-HITEMP-BRNBR 14136 Type

CBL-EX-PWR-C13-CHCG_CBL-C13-06-CHGB 1002-1996250 VAC, 10 A,

CBL-EX-PWR-C13-EUCG_CBL-C13-06-EUCEE (7) VII250 VAC, 10 A,

CBL-EX-PWR-C13-ILCBL_CBL-C13-06-ILSI 32/1971 Type

CBL-EX-PWR-C13-ITCG_CBL-C13-06-ITCEI 23-16/VII250 VAC, 10 A,

Graphic

Japan

North America

South Africa and India

South Korea

50 Hz or 60 Hz

125 VAC, 13 A, 60 Hz

250 VAC, 13 A, 60 Hz

250 VAC, 10 A, 50 Hz

250 VAC, 10 A, 60 Hz

250 VAC, 13 A, 60 Hz

49-92

NEMA L6-15

NEMA 6-15

Type ZA/3

K60884-1

CBL-EX-PWR-C13-JPCG_CBL-C13-06-JPJIS C8303125 VAC, 12 A,

CG_CBL-C13-06-USCAN/CSA No.

CBL-EX-PWR-C13-US

CBL-PW-C13-250-US

CBL-PWR-C13-250-US

CBL-PWR-C15M-HITEMP-SASABS 164/1:1992

CBL-EX-PWR-C13-KRCG_CBL-C13-06-KRKSC 8305;

CBL-EX-PWR-C13-SZCG_CBL-C13-06-SZSwitzerland

Table 21: AC Power Cord Specifications (continued)

g021288

g050008

AC OK

DC OK

Fault

Spare Juniper Model Number

CBL-EX-PWR-C13-TWCG_CBL-C13-06-TWNEMA5-15P Type

CBL-EX-PWR-C13-UKCG_CBL-C13-06-UKBS 1363/A250 VAC, 10 A,

Taiwan

United Kingdom

Electrical SpecificationsCountry/Region

250 VAC, 10 A, 50 Hz

125 VAC, 11 A and 15 A, 50 Hz

50 Hz

Shipped Juniper Model NumberPlug Standards

SEV 1011 SEV 1991; EN 60320 C13

N5-15P

QFX5200 AC Power Supply LEDs

The QFX5200-32C and QFX5200-32C-L uses three LEDs to indicate power status, while the QFX5200-48Y has a single bi-colored LED for power status.Figure 26 on page 57 shows the location of the LEDs on the QFX5200-32C power supply. Figure 27 on page 58 shows the LED location on a QFX5200-48Y power supply.

Graphic

Figure 26: AC Power Supply LEDs on QFX5200-32C and QFX5200-32C-L Switches

Figure 27: AC Power Supply LED on a QFX5200-48Y Switch

g050942

1—Bi-colored LED

Table 22 on page 58 and Table 23 on page 59 describe the LED behavior on the AC power supplies.

Table 22: AC Power Supply LEDs on QFX5200-32C and QFX5200-32C-L

DescriptionStateColorLED

OffUnlitAC OK

OffUnlitDC OK

On steadilyAmberFault

The power supply is disconnected from power, or power is not coming into the power supply.

Power is coming into the power supply.On steadilyGreen

The power supply is disconnected from power, or the power supply is not sending out power correctly.

The power supply is sending out power correctly.On steadilyGreen

An error has been detected in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.

NOTE: If the AC OK LED and the DC OK LED are unlit, either the AC power cord is not installed

properly or the power supply fuse has failed. If the AC OK LED is lit and the DC OK LED is unlit, the AC power supply is installed properly, but the power supply has an internal failure.

Table 23: AC Power Supply LED on a QFX5200-48Y

DescriptionStateColor

red/green

OffUnlit

On steadilyRed

Blinking

The power supply is disconnected from power, or power is not coming into the power supply.

The PSU is in standby mode. Power is coming into the power supply at +5V..BlinkingGreen

The power supply is sending out power correctly.On steadily

Power supply warning. Check the logs for related messages.BlinkingAlternating

The internal fan in the power supply has failed. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.

QFX5200 DC Power Supply Description

The power supplies in QFX5200 switches (see Figure 28 on page 60 and Figure 29 on page 60) are hot-removable and hot-insertable field-replaceable units (FRUs). You can install the power supplies without powering off the switch or disrupting the switching function. QFX5200 switches can operate with one PSU, but two power supplies are required to run without error messages and to have redundancy.

The DC power supply in QFX5200-32C is 1100 W with dual feeds for power resiliency.

Figure 28: QFX5200-32C DC Power Supply

g050911

Figure 29: QFX5200-48Y DC Power Supply

3—1— Ejector leverTerminal block

4—2— HandleProtective earthing terminal

NOTE: The DC power supply in the switch has four terminals labeled V-, V-, V+, and V+ (see

Figure 30 on page 61 and Figure 31 on page 61) for connecting DC power source cables labeled

positive (+) and negative (–).

Figure 30: QFX5200-32C DC Power Supply Faceplate

g050944

2 3

Red: RTN

Black: -36 -72V

Green: Grounding

5—1— Protective earthing terminalShunt negative input terminals (-48V)

6—2— Fault LEDShunt positive input terminals (+RTN)

7—3— Output LEDTerminal block

8—4— Input LEDEjector lever

Figure 31: QFX5200-48Y DC Power Supply Faceplate

To avoid electrical injury, carefully follow instructions in “Maintaining QFX5200 Power System” on page 133.

QFX5200 DC Power Specifications

Table 24 on page 62 describes the QFX5200 DC power specifications.

Table 24: DC Power Specifications for a QFX5200

SpecificationsModelItem

rating

consumption

QFX5200-32CDC input voltage

QFX5200-48Y

Rated operating voltage: –48 VDC to -60 VDC

•

Operating voltage range: -40 VDC through –72 VDC

•

Rated operating voltage: –48 VDC to -60 VDCQFX5200-48Y

10 A maximumQFX5200-32CDC input current

–48 VDC to –60 VDC: 21A

–36 VDC to –72 VDC: 25A to 11A

300 WQFX5200-32CTypical power

315 WQFX5200-48Y

385 WQFX5200-32CMaximum power

470 WQFX5200-48Y

QFX5200 DC Power Supply LEDs

Figure 32 on page 62 and Figure 33 on page 63 show the location of the LEDs on the QFX5200-32C DC

power supply.

Figure 32: DC Power Supply Faceplate on a QFX5200-32C

3—1— Fault LEDInput LED

2—Output LED

Figure 33: DC Power Supply Faceplate on a QFX5200-48Y

g050943

2 3

1—Bi-colored LED

CAUTION: The V+ terminals are shunted internally together, as are the V- terminals.

The same polarity terminal can be wired together from the same source to provide an additional current path in a higher power chassis. Do not connect the terminals to different sources.

Table 25 on page 63 and Table 26 on page 64 describe the LEDs on the DC power supplies.

Table 25: DC Power Supply LEDs on a QFX5200-32C

DescriptionStateColorName

OffUnlitInput

OffUnlitOutput

On steadilyGreen

The power supply is disconnected from power, or power is not coming into the power supply.

Power is coming into the power supply.On steadilyGreen

The power supply is disconnected from power, or the power supply is not sending out power correctly.

The power supply is sending out power correctly.

Table 25: DC Power Supply LEDs on a QFX5200-32C (continued)

DescriptionStateColorName

On steadilyAmberFault

Table 26: DC Power Supply LED on a QFX5200-48Y

DescriptionStateColor

OffUnlit

red/green

The power supply is disconnected from power, or power is not coming into the power supply.

The PSU is in standby mode. Power is coming into the power supply at +5V.BlinkingGreen

The power supply is sending out power correctly.On steadily

Power supply warning. Check the logs for related messages.BlinkingAlternating

On steadilyRed

Blinking

RELATED DOCUMENTATION

Maintaining QFX5200 Power System | 133

CHAPTER

Site Planning, Preparation, and

Specifications

QFX5200 Site Preparation Checklist | 66

Planning a Virtual Chassis Deployment using QFX Devices | 67

QFX5200 Site Guidelines and Requirements | 72

QFX5200 Network Cable and Transceiver Planning | 82

QFX5200 Management Cable Specifications and Pinouts | 89

QFX5200 Site Preparation Checklist

The checklist in Table 27 on page 66 summarizes the tasks you need to perform when preparing a site for a QFX5200 installation.

Table 27: Site Preparation Checklist

DatePerformed ByFor More InformationItem or Task

Architecture

Determine whether the QFX5200-32C will operate as a standalone switch or as a member in a Virtual Chassis. QFX5200-48Y and QFX5200-32C-L are supported only as a standalone switches.

Environment

Verify that environmental factors such as temperature and humidity do not exceed switch tolerances.

Power

Measure the distance between external power sources and switch installation site.

Calculate the power consumption and requirements.

Rack or Cabinet

“Planning a Virtual Chassis Deployment using QFX Devices” on page 67

“QFX5200 Environmental Requirements and Specifications” on page 73

“QFX5200 Power System” on page 52

Verify that your rack or cabinet meets the minimum requirements for the installation of the switch.

“QFX5200 Rack Requirements” on page 79

“QFX5200 Cabinet Requirements” on page 80“Determining QFX5200 Optical Interface Support” on page 82

Table 27: Site Preparation Checklist (continued)

DatePerformed ByFor More InformationItem or Task

Plan rack or cabinet location, including required space clearances.

Secure the rack or cabinet to the floor and building structure.

Cables

Acquire cables and connectors:

Determine the number of cables needed

•

based on your planned configuration.

Review the maximum distance allowed for

•

each cable. Choose the length of cable based on the distance between the hardware components being connected.

Plan the cable routing and management.

“QFX5200 Clearance Requirements for Airflow and Hardware Maintenance” on page 76

“Determining QFX5200 Optical Interface Support” on page 82

RELATED DOCUMENTATION

General Safety Guidelines and Warnings | 172 QFX5200 Installation Overview | 99

Planning a Virtual Chassis Deployment using QFX Devices

IN THIS SECTION

Valid Configurations for a QFX Virtual Chassis | 68

Valid Configurations for a QFX5110 Virtual Chassis | 69

Valid Configurations for a QFX5200 Virtual Chassis | 69

VC Deployment Checklist | 69

You can deploy QFX Series switches as members in three types of Virtual Chassis:

QFX Virtual Chassis (QFX3500, QFX3600, QFX5100, and EX4300)

•

QFX5110 Virtual Chassis (QFX5110 and QFX5100)

•

QFX5200 Virtual Chassis (QFX5200-32C only)

•

QFX Virtual Chassis and QFX5110 Virtual Chassis allow you to interconnect a mixture of up to ten switches into one logical device and manage the device as a single chassis. QFX5200 Virtual Chassis is limited to three QFX5200-32C members.

A Virtual Chassis configuration has two Routing Engines—the primary switch and the backup switch. All other participating switches operate as line cards. You create a Virtual Chassis by cabling the switches in a ring topology and configuring SFP+, QSFP+, or QSFP28 interfaces into Virtual Chassis ports (VCPs). VCPs are responsible for passing all data and control traffic between member switches in the Virtual Chassis. All non-channelized QSFP28 or QSFP+ uplink interfaces on the switches can be configured into VCPs. All fixed SFP+ interfaces can also be configured into VCPs.

All members of the Virtual Chassis are required to run the same Junos OS Release. You can check the version and release by issuing the show chassis version CLI command.

This topic covers:

Valid Configurations for a QFX Virtual Chassis

Valid configurations are:

All QFX5100 members (homogenous)–Supported QFX5100 models are:

•

QFX5100-24Q

•

QFX5100-48S

•

QFX5100-48T

•

QFX5100-96S

•

All QFX3600 members (homogenous)

•

All QFX3500 members (homogenous)

•

A mixture of QFX3600 and QFX3500 members (heterogeneous)

•

A mixture of QFX5100, QFX3600, and QFX3500 members (heterogeneous)–use the QFX5100 switches

•

as primary RE and backup RE whenever possible.

A mixture of QFX5100, QFX3600, QFX3500, and EX4300 members (heterogeneous). EX4300 switches

•

as the primary RE or backup RE is not supported; use QFX5100 switches in these roles whenever possible.

An all EX4300 member is simply considered an EX4300 Virtual Chassis. See Understanding EX Series Virtual Chassis.

If the QSFP+ interfaces are not available for VCP, 10-Gigbit interfaces can be used.

Valid Configurations for a QFX5110 Virtual Chassis

Valid configurations are:

All QFX5110 members (homogenous)–Supported QFX5110 models are:

•

QFX5110-32Q

•

QFX5110-48S

•

A mixture of QFX5110 and QFX5100 members (homogenous)–use the QFX5110 models as the primary

•

RE and backup RE. Use the following QFX5100 switches in the line card role:

QFX5100-24Q

•

QFX5100-48S

•

QFX5100-48T

•

QFX5100-96S

•

Valid Configurations for a QFX5200 Virtual Chassis

You can create an all QFX5200-32C Virtual Chassis with up to three members. Use the QFX5200-32C in all three member roles: primary RE, backup RE, and line card. Configure the Virtual Chassis Ports (VCPs) as 40-Gigabit Ethernet only. QFX5200-48Y is not supported in a QFX5200 Virtual Chassis.

VC Deployment Checklist

Use Table 28 on page 70 to plan your deployment:

Table 28: Deployment Checklist

Components

DatePerformed ByFor More InformationItem or Task

Determine the number of devices in the Virtual Chassis and the role of each device (primary RE, backup RE, or linecard).

NOTE: A Virtual Chassis is not

constrained to a single building; the limits for the optic cable are the only consideration.

Environment

Evaluate the provisioning options and determine the configuration method that applies to your deployment.

Power

Measure the distance between external power sources and switch installation site.

Understanding QFX Series Virtual Chassis

Understanding Virtual Chassis Components

Configuring an EX4650 or a QFX Series Virtual

Chassis

Calculate the power consumption and requirements.

Rack or Cabinet

QFX5110 AC Power Specifications

AC Power Specifications for a QFX5100 Device

AC Power Specifications for a QFX3600 or

QFX3600-I Device

AC Power Specifications for a QFX3500 Device

AC Power Specifications for an EX4600 Switch

AC Power Supply Specifications for EX4300

Switches

Table 28: Deployment Checklist (continued)

DatePerformed ByFor More InformationItem or Task

Verify that your rack or cabinet meets the minimum requirements for the installation of the switch.

Plan rack or cabinet location, including required space clearances.

QFX5110 Rack Requirements

Rack Requirements for a QFX5100 Device

Cabinet Requirements for a QFX5100 Device

Rack Requirements for a QFX3600 or

QFX3600-I Device

Cabinet Requirements for a QFX3600 or

QFX3600-I Device

Rack Requirements for a QFX3500 Device

Cabinet Requirements for a QFX3500 Device

Rack Requirements for an EX4600 Switch

Cabinet Requirements for an EX4600 Switch

Rack Requirements for a EX4300 Device

Cabinet Requirements for a EX4300 Device

Clearance Requirements for Airflow and

Hardware Maintenance for a QFX5100 Device

Clearance Requirements for Airflow and

Hardware Maintenance for a QFX3600 or

QFX3600-I Device

Secure the rack or cabinet to the floor and building structure.

Cables

Clearance Requirements for Airflow and

Hardware Maintenance for a QFX3500 Device

Clearance Requirements for Airflow and

Hardware Maintenance for an EX4600 Switch

Clearance Requirements for Airflow and

Hardware Maintenance for EX4300 Switches

Table 28: Deployment Checklist (continued)

DatePerformed ByFor More InformationItem or Task

Acquire cables and connectors:

Determine the number of cables

•

needed based on your planned configuration.

Review the maximum distance

•

allowed for each cable. Choose the length of cable based on the distance between the hardware components being connected.

Plan the cable routing and management.

RELATED DOCUMENTATION

QFX5110 Site Preparation Checklist

Cable Specifications for QSFP+ and

•

QSFP28 Transceivers on page 83

Cable Specifications for Console and

•

Management Connections for the QFX Series on page 89

Understanding EX Series Switches

•

Fiber-Optic Cable Signal Loss, Attenuation,

and Dispersion

Understanding QFX Series Fiber-Optic

•

Cable Signal Loss, Attenuation, and Dispersion on page 85

Site Preparation Checklist for a QFX5100 Device

Site Preparation Checklist for a QFX3600 or QFX3600-I Device

Site Preparation Checklist for a QFX3500 Device

Site Preparation Checklist for EX4300 Switches

QFX5200 Site Guidelines and Requirements

IN THIS SECTION

QFX5200 Environmental Requirements and Specifications | 73

General Site Guidelines | 75

QFX5200 Grounding Cable and Lug Specifications | 75

QFX5200 Clearance Requirements for Airflow and Hardware Maintenance | 76

QFX5200 Chassis Physical Specifications | 77

Site Electrical Wiring Guidelines | 78

QFX5200 Rack Requirements | 79

QFX5200 Cabinet Requirements | 80

QFX5200 Environmental Requirements and Specifications

The switch must be installed in a rack or cabinet. It must be housed in a dry, clean, well-ventilated, and temperature-controlled environment.

Follow these environmental guidelines:

The site must be as dust-free as possible, because dust can clog air intake vents and filters, reducing the

•

efficiency of the switch cooling system.

Maintain ambient airflow for normal switch operation. If the airflow is blocked or restricted, or if the

•

intake air is too warm, the switch might overheat, leading to the switch temperature monitor shutting down the device to protect the hardware components.

Table 29 on page 73 provides the required environmental conditions for normal switch operation.

Table 29: QFX5200 Switch Environmental Tolerances

ToleranceModelDescription

Altitude

QFX5200-32C and QFX5200-32C-L

QFX5200-48Y

No performance degradation to 6,562 feet (2000 meters)

No performance degradation to 13,000 feet (3,962 meters)

Table 29: QFX5200 Switch Environmental Tolerances (continued)

ToleranceModelDescription

Relative humidity, operating

Temperature

QFX5200-32C and QFX5200-32C-L

QFX5200-48Y

QFX5200-32C and QFX5200-32C-L

QFX5200-48Y

Normal operation ensured in relative humidity range of 5% through 90%, noncondensing

Short-term operation ensured in relative humidity

•

range of 5% through 93%, noncondensing

NOTE: As defined in NEBS GR-63-CORE, Issue 3,

short-term events can be up to 96 hours in duration but not more than 15 days per year.

Normal operation ensured in relative humidity range of 5% through 93%, noncondensing for airflow out (AFO) models and 10% through 93%, noncondensing for airflow in (AFI) models

Normal operation ensured in temperature range of

•

32° F through 104° F (0° C through 40° C)

Nonoperating storage temperature in shipping

•

container: –40° F through 158° F (–40° C through 70° C)

Normal operation ensured in temperature range of

•

32° F through 113° F (0° C through 45° C) for AFO models, 32° F through 104° F (0° C through 40° C) for AFI models

Nonoperating storage temperature in shipping

•

container: –40° F through 158° F (–40° C through 70° C) for both AFO and AFI

QFX5200 all modelsSeismic

Designed to comply with Zone 4 earthquake requirements per NEBS GR-63-CORE, Issue 3.

NOTE: Install QFX Series devices only in restricted areas, such as dedicated equipment rooms

and equipment closets, in accordance with Articles 110-16, 110-17, and 110-18 of the National Electrical Code, ANSI/NFPA 70.

General Site Guidelines

Efficient device operation requires proper site planning and maintenance and proper layout of the equipment, rack or cabinet, and wiring closet.

To plan and create an acceptable operating environment for your device and prevent environmentally caused equipment failures:

Keep the area around the chassis free from dust and conductive material, such as metal flakes.

•

Follow prescribed airflow guidelines to ensure that the cooling system functions properly and that

•

exhaust from other equipment does not blow into the intake vents of the device.

Follow the prescribed electrostatic discharge (ESD) prevention procedures to prevent damaging the

•

equipment. Static discharge can cause components to fail completely or intermittently over time.

Install the device in a secure area, so that only authorized personnel can access the device.

•

QFX5200 Grounding Cable and Lug Specifications

To ground a QFX5200, connect a grounding cable to earth ground and then attach it to the chassis protective earthing terminals. See “Connect the QFX5200 to Earth Ground” on page 113.

WARNING: To comply with GR-1089 requirements, all intra-building copper cabling

used for SFP+ and QSFP+ ports must be shielded and grounded at both ends.

CAUTION: Before switch installation begins, a licensed electrician must attach a cable

lug to the grounding cables that you supply. A cable with an incorrectly attached lug can damage the switch.

Before connecting the switch to earth ground, review the following information:

The grounding lug required for a QFX5200-32C or a QFX5200-32C-L is a Panduit LCD10-10A-L or

•

equivalent (not provided). The grounding lug should accommodates 14–10 AWG (2–5.3 mm²) stranded wire. The grounding lug required for a QFX5200-48Y is tin-plated brass 4.3 mm ring terminal that supports 18–14 AWG (0.8-2 mm²) and an M4 screw.

The grounding cable that you provide for a QFX5200 must be 14 AWG (2 mm²), minimum 90° C wire,

•

or as permitted by the local code. If you are using the alternate method of grounding the chassis on a

QFX5200-32C-DC system, the recommended grounding cable is 12 AWG (2.5 mm²) standard wire, 90°

g050428

FRUs

Ports

Mounting bracket

17.36"

44.1 cm

20.48"

(52.02 cm)

Clearance required

for maintenance

Clearance required

for maintenance

20" (50.8 cm)10" (25.4 cm)

19"

(48.2 cm)

C wire or heavier.

For QFX5200-32C or a QFX5200-32C-L, ensure you have two SAE 10-32 washers and screws to attach

•

the cable and bracket (not provided).

QFX5200 Clearance Requirements for Airflow and Hardware Maintenance

When planning the site for installing a QFX5200, you must allow sufficient clearance around the installed chassis (see Figure 34 on page 76 and Figure 35 on page 77).

Figure 34: Clearance Requirements for Airflow and Hardware Maintenance for a QFX5200-32C and QFX5200-32C-L

Figure 35: Clearance Requirements for Airflow and Hardware Maintenance for a QFX5200-48Y

g050922

17.26 in.

(43.84 cm)

18.83 in.

(47.82 cm)

Front

(Ports)

Rear

(FRUs)

Cle a ran c e re qui red

for main tenan c e

24 in. ( 6 0 .9 cm)

Cle a ran c e re qui red

for main tenan c e

24 in. ( 6 0 .9 cm) 21.34 in. ( 54.2 cm)

20.28 in.

(51.5 cm)

Cle a ran c e re qui red

for main tenan c e

24 in. ( 6 0 .9 cm)

For the cooling system to function properly, the airflow around the chassis must be unrestricted. See

•

“QFX5200 Cooling System Description” on page 43 for more information about the airflow through the

chassis.

If you are mounting a QFX5200 in a rack or cabinet with other equipment, ensure that the exhaust from

•

other equipment does not blow into the intake vents of the chassis.

Leave at least 24 in. (61 cm) both in front of and behind the QFX5200. For service personnel to remove

•

and install hardware components, you must leave adequate space at the front and back of the switch. NEBS GR-63 recommends that you allow at least 30 in. (76.2 cm) in front of the rack or cabinet and 24 in. (61 cm) behind the rack or cabinet.

QFX5200 Chassis Physical Specifications

The QFX5200 is a rigid sheet-metal structure that houses the hardware components. Table 30 on page 77 summarizes the physical specifications of the QFX5200.

Table 30: Physical Specifications for the QFX5200

WeightDepthWidthHeightProduct SKU

QFX5200-32C-L

23.5 lbs (10.66 kg)20.48 in. (52 cm)17.36 in. (44.1 cm)1.72 in. (4.3 cm)QFX5200-32C and

Table 30: Physical Specifications for the QFX5200 (continued)

WeightDepthWidthHeightProduct SKU

30.00 lbs (13.60 kg)20.27 in. (51.48 cm)17.25 in. (43.81 cm)1.71 in. (4.34 cm)QFX5200-48Y

Site Electrical Wiring Guidelines

Table 31 on page 78 describes the factors you must consider while planning the electrical wiring at your

site.

WARNING: You must provide a properly grounded and shielded environment and use

electrical surge-suppression devices.

Avertissement Vous devez établir un environnement protégé et convenablement mis à la terre et utiliser des dispositifs de parasurtension.

Table 31: Site Electrical Wiring Guidelines

Site Wiring Factor

Signaling limitations

Radio frequency interference

Guidelines

If your site experiences any of the following problems, consult experts in electrical surge suppression and shielding:

Improperly installed wires cause radio frequency interference (RFI).

•

Damage from lightning strikes occurs when wires exceed recommended distances or pass between

•

buildings.

Electromagnetic pulses (EMPs) caused by lightning damage unshielded conductors and electronic

•

devices.

To reduce or eliminate RFI from your site wiring, do the following:

Use a twisted-pair cable with a good distribution of grounding conductors.

•

If you must exceed the recommended distances, use a high-quality twisted-pair cable with one

•

ground conductor for each data signal when applicable.

Table 31: Site Electrical Wiring Guidelines (continued)

Site Wiring Factor

Guidelines

Electromagnetic compatibility

If your site is susceptible to problems with electromagnetic compatibility (EMC), particularly from lightning or radio transmitters, seek expert advice.

Some of the problems caused by strong sources of electromagnetic interference (EMI) are:

Destruction of the signal drivers and receivers in the device

•

Electrical hazards as a result of power surges conducted over the lines into the equipment

•

QFX5200 Rack Requirements

QFX5200 switches are designed to be installed on four-post racks.

Rack requirements consist of:

Rack type

•

Mounting bracket hole spacing

•

Rack size and strength

•

Table 32 on page 79 provides the rack requirements and specifications for the QFX5200.

Table 32: Rack Requirements for the QFX5200

GuidelinesRack Requirement

Rack type

Mounting bracket hole spacing

Use a four-post rack that provides bracket holes or hole patterns spaced at 1 U (1.75 in. or

4.45 cm) increments and that meets the size and strength requirements to support the weight.

A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics Industry Association.

The holes in the mounting brackets are spaced at 1 U (1.75 in. or 4.45 cm), so that the switch can be mounted in any rack that provides holes spaced at that distance.

Table 32: Rack Requirements for the QFX5200 (continued)

GuidelinesRack Requirement

Rack size and strength

Ensure that the rack complies with the standards for a 19-in. or 23-in. rack as defined in

•

Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics Industry Association.

A 600-mm rack as defined in the four-part Equipment Engineering (EE); European

•

telecommunications standard for equipment practice (document numbers ETS 300 119-1 through 119-4) published by the European Telecommunications Standards Institute (href="http://www.etsi.org">http://www.etsi.org).

The horizontal spacing between the rails in a rack that complies with this standard is usually wider than the device's mounting brackets, which measure 19 in. (48.26 cm) from outer edge to outer edge. Use approved wing devices to narrow the opening between the rails as required.

Ensure that the rack rails are spaced widely enough to accommodate the switch chassis’

•

external dimensions. The outer edges of the front-mounting brackets extend the width to 19 in. (48.26 cm).

For four-post installations, the front and rear rack rails must be spaced between 23.5 in.

•

(59.7 cm) to 30.6 in. (77.7 cm) front-to-back.

The rack must be strong enough to support the weight of the switch.

•

Ensure that the spacing of rails and adjacent racks allows for proper clearance around the

•

switch and rack.

Rack connection to building structure

Secure the rack to the building structure.

•

If earthquakes are a possibility in your geographical area, secure the rack to the floor.

•

Secure the rack to the ceiling brackets as well as wall or floor brackets for maximum stability.

•

QFX5200 Cabinet Requirements

You can mount the QFX5200 in an enclosure or cabinet that contains a four-post 19-in. open rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310-D) published by the Electronics Industry Association.

Cabinet requirements consist of:

Cabinet size and clearance

•

Cabinet airflow requirements

•

Table 33 on page 81 provides the cabinet requirements and specifications for the QFX5200.

Table 33: Cabinet Requirements for the QFX5200

GuidelinesCabinet Requirement

Cabinet size and clearance

Cabinet airflow requirements

The minimum cabinet size for accommodating a QFX5200 device is 36 in. (91.4 cm) deep. Large cabinets improve airflow and reduce the chance of overheating.

When you mount the switch in a cabinet, ensure that ventilation through the cabinet is sufficient to prevent overheating.

Ensure that the cool air supply you provide through the cabinet adequately

•

dissipates the thermal output of the switch (or switches).

Ensure that the cabinet allows the chassis hot exhaust air to exit the cabinet

•

without recirculating into the switch. An open cabinet (without a top or doors) that employs hot air exhaust extraction from the top allows the best airflow through the chassis. If the cabinet contains a top or doors, perforations in these elements assist with removing the hot air exhaust.

The QFX5200 fans exhaust hot air either through the vents on the port

•

panel or through the fans and power supplies. Install the switch in the cabinet in a way that maximizes the open space on the FRU side of the chassis. This maximizes the clearance for critical airflow.

Route and dress all cables to minimize the blockage of airflow to and from

•

the chassis.

Ensure that the spacing of rails and adjacent cabinets allows for the proper

•

clearance around the switch and cabinet.

RELATED DOCUMENTATION

QFX5200 Installation Overview | 99

Connect the QFX5200 to Earth Ground | 113 QFX5200 Cooling System Description | 43

QFX5200 Network Cable and Transceiver Planning

IN THIS SECTION

Determining QFX5200 Optical Interface Support | 82

Cable Specifications for QSFP+ and QSFP28 Transceivers | 83

Understanding QFX Series Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion | 85

Calculating Power Budget and Power Margin for Fiber-Optic Cables | 86

Determining QFX5200 Optical Interface Support

You can find information about the optical transceivers supported on your Juniper device by using the Hardware Compatibility Tool. In addition to transceiver and connection type, the optical and cable characteristics–where applicable–are documented for each transceiver. The Hardware Compatibility Tool enables you to search by product, displaying all the transceivers supported on that device, or category, by interface speed or type. The list of supported transceivers for the QFX5200-32C and QFX5200-32C-L is located at https://apps.juniper.net/hct/product/#prd=QFX5200-32C and

https://apps.juniper.net/hct/product/#prd=QFX5200-48Y

CAUTION: If you face a problem running a Juniper Networks device that uses a

third-party optic or cable, the Juniper Networks Technical Assistance Center (JTAC) can help you diagnose the source of the problem. Your JTAC engineer might recommend that you check the third-party optic or cable and potentially replace it with an equivalent Juniper Networks optic or cable that is qualified for the device.

NOTE: For interoperability with other QFX Series switches, ensure auto-negotiation on the

QFX5200 is disabled.

Cable Specifications for QSFP+ and QSFP28 Transceivers

The 40-Gigabit Ethernet QSFP+ and 100-Gigabit Ethernet QSFP28 transceivers that are used in QFX Series switches use 12-ribbon multimode fiber crossover cables with socket MPO/UPC connectors. The fiber can be either OM3 or OM4. These cables are not sold by Juniper Networks.

CAUTION: To maintain agency approvals, use only a properly constructed, shielded

cable.

TIP: Ensure that you order cables with the correct polarity. Vendors refer to these crossover

cables as key up to key up, latch up to latch up, Type B, or Method B. If you are using patch panels between two QSFP+ or QSFP28 transceivers, ensure that the proper polarity is maintained through the cable plant.

Table 34 on page 83 describes the signals on each fiber. Table 35 on page 84 shows the pin-to-pin

connections for proper polarity.

Table 34: QSFP+ and QSFP28 Optical Module Receptacle Pinouts

SignalFiber

Tx0 (Transmit)1

Tx1 (Transmit)2

Tx2 (Transmit)3

Tx3 (Transmit)4

Unused5

Unused6

Unused7

Unused8

Rx3 (Receive)9

Rx2 (Receive)10

Table 34: QSFP+ and QSFP28 Optical Module Receptacle Pinouts (continued)

SignalFiber

Rx1 (Receive)11

Rx0 (Receive)12

Table 35: QSFP+ MPO Fiber-Optic Crossover Cable Pinouts

PinPin

121

112

103

310

211

112

Understanding QFX Series Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion

IN THIS SECTION

Signal Loss in Multimode and Single-Mode Fiber-Optic Cables | 85

Attenuation and Dispersion in Fiber-Optic Cable | 85

To determine the power budget and power margin needed for fiber-optic connections, you need to understand how signal loss, attenuation, and dispersion affect transmission. The QFX Series uses various types of network cables, including multimode and single-mode fiber-optic cables.

Signal Loss in Multimode and Single-Mode Fiber-Optic Cables

Multimode fiber is large enough in diameter to allow rays of light to reflect internally (bounce off the walls of the fiber). Interfaces with multimode optics typically use LEDs as light sources. However, LEDs are not coherent light sources. They spray varying wavelengths of light into the multimode fiber, which reflect the light at different angles. Light rays travel in jagged lines through a multimode fiber, causing signal dispersion. When light traveling in the fiber core radiates into the fiber cladding (layers of lower refractive index material in close contact with a core material of higher refractive index), higher-order mode loss occurs. Together, these factors reduce the transmission distance of multimode fiber compared to that of single-mode fiber.

Single-mode fiber is so small in diameter that rays of light reflect internally through one layer only. Interfaces with single-mode optics use lasers as light sources. Lasers generate a single wavelength of light, which travels in a straight line through the single-mode fiber. Compared to multimode fiber, single-mode fiber has a higher bandwidth and can carry signals for longer distances. It is consequently more expensive.

For information about the maximum transmission distance and supported wavelength range for the types of single-mode and multimode fiber-optic cables that are connected to the QFX Series, see the Hardware

Compatibility Tool. Exceeding the maximum transmission distances can result in significant signal loss,

which causes unreliable transmission.

Attenuation and Dispersion in Fiber-Optic Cable

An optical data link functions correctly provided that modulated light reaching the receiver has enough power to be demodulated correctly. Attenuation is the reduction in strength of the light signal during transmission. Passive media components such as cables, cable splices, and connectors cause attenuation. Although attenuation is significantly lower for optical fiber than for other media, it still occurs in both

multimode and single-mode transmission. An efficient optical data link must transmit enough light to overcome attenuation.

Dispersion is the spreading of the signal over time. The following two types of dispersion can affect signal transmission through an optical data link:

Chromatic dispersion, which is the spreading of the signal over time caused by the different speeds of

•

light rays.

Modal dispersion, which is the spreading of the signal over time caused by the different propagation

•

modes in the fiber.

For multimode transmission, modal dispersion, rather than chromatic dispersion or attenuation, usually limits the maximum bit rate and link length. For single-mode transmission, modal dispersion is not a factor. However, at higher bit rates and over longer distances, chromatic dispersion limits the maximum link length.

An efficient optical data link must have enough light to exceed the minimum power that the receiver requires to operate within its specifications. In addition, the total dispersion must be within the limits specified for the type of link in the Telcordia Technologies document GR-253-CORE (Section 4.3) and International Telecommunications Union (ITU) document G.957.

When chromatic dispersion is at the maximum allowed, its effect can be considered as a power penalty in the power budget. The optical power budget must allow for the sum of component attenuation, power penalties (including those from dispersion), and a safety margin for unexpected losses.

Calculating Power Budget and Power Margin for Fiber-Optic Cables

Use the information in this topic and the specifications for your optical interface to calculate the power budget and power margin for fiber-optic cables.

TIP: You can use the Hardware Compatibility Tool to find information about the pluggable

transceivers supported on your Juniper Networks device.

To calculate the power budget and power margin, perform the following tasks:

How to Calculate Power Budget for Fiber-Optic Cable | 87

How to Calculate Power Margin for Fiber-Optic Cable | 87

How to Calculate Power Budget for Fiber-Optic Cable

To ensure that fiber-optic connections have sufficient power for correct operation, you need to calculate the link's power budget, which is the maximum amount of power it can transmit. When you calculate the power budget, you use a worst-case analysis to provide a margin of error, even though all the parts of an actual system do not operate at the worst-case levels. To calculate the worst-case estimate of power budget (PB), you assume minimum transmitter power (PT) and minimum receiver sensitivity (PR):

PB= PT– P

The following hypothetical power budget equation uses values measured in decibels (dB) and decibels referred to one milliwatt (dBm):

PB= PT– P

PB= –15 dBm – (–28 dBm)

PB= 13 dB

How to Calculate Power Margin for Fiber-Optic Cable

After calculating a link's power budget, you can calculate the power margin (PM), which represents the amount of power available after subtracting attenuation or link loss (LL) from the power budget (PB). A worst-case estimate of PMassumes maximum LL:

PM= PB– LL

PMgreater than zero indicates that the power budget is sufficient to operate the receiver.

Factors that can cause link loss include higher-order mode losses, modal and chromatic dispersion, connectors, splices, and fiber attenuation. Table 36 on page 87 lists an estimated amount of loss for the factors used in the following sample calculations. For information about the actual amount of signal loss caused by equipment and other factors, refer to vendor documentation.

Table 36: Estimated Values for Factors Causing Link Loss

Estimated Link-Loss ValueLink-Loss Factor

Higher-order mode losses

Modal and chromatic dispersion

Single mode—None

Multimode—0.5 dB

Single mode—None

Multimode—None, if product of bandwidth and distance is less than 500 MHz-km

Table 36: Estimated Values for Factors Causing Link Loss (continued)

Estimated Link-Loss ValueLink-Loss Factor

0.5 dBConnector

0.5 dBSplice

Fiber attenuation

Single mode—0.5 dB/km

Multimode—1 dB/km

The following sample calculation for a 2-km-long multimode link with a power budget (PB) of 13 dB uses the estimated values from Table 36 on page 87 to calculate link loss (LL) as the sum of fiber attenuation

(2 km @ 1 dB/km, or 2 dB) and loss for five connectors (0.5 dB per connector, or 2.5 dB) and two splices (0.5 dB per splice, or 1 dB) as well as higher-order mode losses (0.5 dB). The power margin (PM) is calculated

as follows:

PM= PB– LL

PM= 13 dB – 2 km (1 dB/km) – 5 (0.5 dB) – 2 (0.5 dB) – 0.5 dB

PM= 13 dB – 2 dB – 2.5 dB – 1 dB – 0.5 dB

PM= 7 dB

The following sample calculation for an 8-km-long single-mode link with a power budget (PB) of 13 dB uses the estimated values from Table 36 on page 87 to calculate link loss (LL) as the sum of fiber attenuation

(8 km @ 0.5 dB/km, or 4 dB) and loss for seven connectors (0.5 dB per connector, or 3.5 dB). The power margin (PM) is calculated as follows:

PM= PB– LL

PM= 13 dB – 8 km (0.5 dB/km) – 7(0.5 dB)

PM= 13 dB – 4 dB – 3.5 dB

PM= 5.5 dB

In both examples, the calculated power margin is greater than zero, indicating that the link has sufficient power for transmission and does not exceed the maximum receiver input power.

RELATED DOCUMENTATION

Maintaining Transceivers and Fiber Optic Cables on QFX5200 | 137

QFX5200 Management Cable Specifications and Pinouts

IN THIS SECTION

Cable Specifications for Console and Management Connections for the QFX Series | 89

RJ-45 Management Port Connector Pinout Information | 90

Console Port Connector Pinouts for the QFX Series | 90

RJ-45 Port, SFP Port, SFP+ Port, QSFP+ Port, and QSFP28 Port Connector Pinout Information | 91

USB Port Specifications for the QFX Series | 96

Cable Specifications for Console and Management Connections for the QFX Series

Table 37 on page 89 lists the specifications for the cables that connect the QFX Series switch to a

management device.

NOTE: The QFX Series can be configured with SFP management ports that support 1000BASE-SX

transceivers. See the Hardware Compatibility Tool for more on the fiber-optic cables required for use with these transceivers.

Table 37: Cable Specifications for Console and Management Connections for the QFX Series

Port on QFX Series Device

Console port

RS-232 (EIA-232) serial cable

One 7-foot (2.13-meter) long RJ-45 patch cable and RJ-45 to DB-9 adapter

Maximum LengthCable SuppliedCable Specification

(2.13 meters)

Device Receptacle

RJ-457 feet

Management port

Category 5 cable or equivalent suitable for 1000BASE-T operation

One 7-foot (2.13-meter) long RJ-45 patch cable

RJ-45328 feet

(100 meters)

RJ-45 Management Port Connector Pinout Information

Table 38 on page 90 provides the pinout information for the RJ-45 connector for the management port

on Juniper Networks devices.

Table 38: RJ-45 Management Port Connector Pinout Information

DescriptionSignalPin

Transmit/receive data pair 1TRP1+1

Transmit/receive data pair 1TRP1—2

Transmit/receive data pair 2TRP2+3

Transmit/receive data pair 3TRP3+4

Transmit/receive data pair 3TRP3—5

Transmit/receive data pair 2TRP2—6

Transmit/receive data pair 4TRP4+7

Transmit/receive data pair 4TRP4—8

Console Port Connector Pinouts for the QFX Series

The console port (labeled CON, or CONSOLE) is an RS-232 serial interface that uses an RJ-45 connector to connect to a console management device. The default baud rate for the console port is 9600 baud.

Table 39 on page 91 provides the pinout information for the RJ-45 console connector. An RJ-45 cable

and RJ-45 to DB-9 adapter are supplied with the QFX Series device.

NOTE: If your laptop or PC does not have a DB-9 plug connector pin and you want to connect

your laptop or PC directly to a QFX Series device, use a combination of the RJ-45 cable and RJ-45 to DB-9 adapter supplied with the device and a USB to DB-9 plug adapter. You must provide the USB to DB-9 plug adapter.

Table 39: Console Port Connector Pinouts for the QFX Series

DescriptionSignalPin

Transmit dataTxD Output3

Signal groundSignal Ground4

Signal groundSignal Ground5

Receive dataRxD Input6

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

The tables in this topic describe the connector pinout information for the RJ-45, SFP, SFP+, QSFP+, and QSFP28 ports.

Table 40 on page 91—10/100/1000-Mbps BASE-T Ethernet RJ-45 network port connector pinout

•

information

Table 41 on page 92—SFP port connector pinout information

•

Table 42 on page 93—SFP+ port connector pinout information

•

Table 43 on page 94—QSFP+ and QSFP28 ports connector pinout information

•

Table 40: 10/100/1000BASE-T Ethernet Network Port Connector Pinout Information

DescriptionSignalPin

TRP1+1

TRP1-2

Transmit/receive data pair 1

Negative Vport (in PoE models)

Transmit/receive data pair 1

Negative Vport (in PoE models)

TRP2+3

Transmit/receive data pair 2

Positive Vport (in PoE models)

Transmit/receive data pair 3TRP3+4

Table 40: 10/100/1000BASE-T Ethernet Network Port Connector Pinout Information (continued)

DescriptionSignalPin

Transmit/receive data pair 3TRP3-5

TRP2-6

Transmit/receive data pair 2

Positive Vport (in PoE models)

Transmit/receive data pair 4TRP4+7

Transmit/receive data pair 4TRP4-8

Table 41: SFP Port Connector Pinout Information

DescriptionSignalPin

Module transmitter groundVeeT1

Module transmitter faultTX_Fault2

Transmitter disabledTX_Disable3

2-wire serial interface data lineSDA4

2-wire serial interface clockSCL-5

Module absentMOD_ABS6

Rate selectRS7

Receiver loss of signal indicationRX_LOS8

Module receiver groundVeeR9

Module receiver groundVeeR10

Module receiver groundVeeR11

Receiver inverted data outputRD-12

Receiver noninverted data outputRD+13

Module receiver groundVeeR14

Table 41: SFP Port Connector Pinout Information (continued)

DescriptionSignalPin

Module receiver 3.3 V supplyVccR15

Module transmitter 3.3 V supplyVccT16

Module transmitter groundVeeT17

Transmitter noninverted data inputTD+18

Transmitter inverted data inputTD-19

Module transmitter groundVeeT20

Table 42: SFP+ Port Connector Pinout Information

DescriptionSignalPin

Module transmitter groundVeeT1

Module transmitter faultTX_Fault2

Transmitter disabledTX_Disable3

2-wire serial interface data lineSDA4

2-wire serial interface clockSCL-5

Module absentMOD_ABS6

Rate select 0, optionally controls SFP+ module receiverRS07

Receiver loss of signal indicationRX_LOS8

Rate select 1, optionally controls SFP+ transmitterRS19

Module receiver groundVeeR10

Module receiver groundVeeR11

Receiver inverted data outputRD-12

Receiver noninverted data outputRD+13

Table 42: SFP+ Port Connector Pinout Information (continued)

DescriptionSignalPin

Module receiver groundVeeR14

Module receiver 3.3-V supplyVccR15

Module transmitter 3.3-V supplyVccT16

Module transmitter groundVeeT17

Transmitter noninverted data inputTD+18

Transmitter inverted data inputTD-19

Module transmitter groundVeeT20

Table 43: QSFP+ and QSFP28 Ports Connector Pinout Information

SignalPin

GND1

TX2n2

TX2p3

GND4

TX4n5

TX4p6

GND7

ModSelL8

LPMode_Reset9

VccRx10

SCL11

SDA12

Table 43: QSFP+ and QSFP28 Ports Connector Pinout Information (continued)

SignalPin

GND13

RX3p14

RX3n15

GND16

RX1p17

RX1n18

GND19

GND20

RX2n21

RX2p22

GND23

RX4n24

RX4p25

GND26

ModPrsL27

IntL28

VccTx29

Vcc130

Reserved31

GND32

TX3p33

Table 43: QSFP+ and QSFP28 Ports Connector Pinout Information (continued)

SignalPin

TX3n34

GND35

TX1p36

TX1n37

GND38

USB Port Specifications for the QFX Series

The following Juniper Networks USB flash drives have been tested and are officially supported for the USB port in the QFX Series:

RE-USB-1G-S—1-gigabyte (GB) USB flash drive (except QFX3100 Director device)

•

RE-USB-2G-S—2-GB USB flash drive (except QFX3100 Director device)

•

RE-USB-4G-S—4-GB USB flash drive

•

CAUTION: Any USB memory product not listed as supported for the QFX Series has

not been tested by Juniper Networks. The use of any unsupported USB memory product could expose your device to unpredictable behavior. Juniper Networks Technical Assistance Center (JTAC) can provide only limited support for issues related to unsupported hardware. We strongly recommend that you use only supported USB flash drives.

CAUTION: Remove the USB flash drive before upgrading Junos OS or rebooting a

QFX Series device. Failure to do so could expose your device to unpredictable behavior.

NOTE: Executing the request system snapshot CLI command on a QFX3500 device requires

an external USB flash drive with at least 4 GB of free space. We recommend using the RE-USB-4G-S flash drive.

NOTE: USB flash drives used with the QFX Series device must support USB 2.0 or later.

RELATED DOCUMENTATION

Connecting the QFX5200 to External Devices | 110

CHAPTER

Initial Installation and Configuration

QFX5200 Installation Overview | 99

Unpacking and Mounting the QFX5200 | 100

Connecting the QFX5200 to External Devices | 110

Connecting the QFX5200 to Power | 112

Performing the Initial Software Configuration for QFX5200 Switches | 126

QFX5200 Installation Overview

IN THIS SECTION

Overview of Installing the QFX5200 | 99

QFX5200 Installation Safety Guidelines | 100

Overview of Installing the QFX5200

You can mount a QFX5200:

Flush with the front of a 19-in. four-post rack. Use the standard mounting brackets provided with the

•

switch for this configuration.

(QFX5200-32C and QFX5200-32C-L) Recessed 2 in. (5 cm) from the front of a 19-in. four-post rack.

•

Use the extension bracket provided in the standard mounting kit for this configuration. Recessed mounting is primarily used in enclosed cabinets.

To install and connect a QFX5200:

1. Follow the instructions in “Unpacking a QFX5200” on page 101.

2. Determine how the switch is to be mounted.

Flush or recessed mounted in a rack or cabinet, see “Mounting a QFX5200 in a Rack or Cabinet” on

page 103.

3. Follow the instructions in:

a. Connect the QFX5200 to Earth Ground on page 113

b. “Connecting AC Power to a QFX5200” on page 116 or “Connecting DC Power to a QFX5200” on

page 119, or Connecting DC Power to a QFX5200-48Y on page 124

c. Register Products—Mandatory to Validate SLAs on page 102

4. Follow the instructions in “Performing the Initial Software Configuration for QFX5200 Switches” on

page 126.

QFX5200 Installation Safety Guidelines

The weight of a fully -loaded QFX5200-32C and QFX5200-32C-L switch chassis is approximately 23.5 lb (10.66 kg); and a QFX5200-48Y weighs between 20.78 lbs (9.43 kg) to 21.16 (9.6 kg) with power supplies and fans installed. Observe the following guidelines for lifting and moving a QFX5200:

CAUTION: If you are installing the QFX5200 above 60 in. (152.4 cm) from the floor,

either remove the power supplies, fan modules, and any expansion modules before attempting to install the switch, or ask someone to assist you during the installation.

Before installing a QFX5200, read the guidelines in “QFX5200 Site Preparation Checklist” on page 66

•

to verify that the intended site meets the specified power, environmental, and clearance requirements.

Before lifting or moving the QFX5200, disconnect all external cables.

•

As when lifting any heavy object, lift most of the weight with your legs rather than your back. Keep your

•

knees bent and your back relatively straight and avoid twisting your body as you lift. Balance the load evenly and be sure that your footing is solid.

100

RELATED DOCUMENTATION

QFX5200 Site Guidelines and Requirements | 72

Installation Instructions Warning | 179 General Safety Guidelines and Warnings | 172

Unpacking and Mounting the QFX5200

IN THIS SECTION

Unpacking a QFX5200 | 101

Mounting a QFX5200 in a Rack or Cabinet | 103

Juniper QFX5200 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

About the Documentation

Documentation and Release Notes

Using the Examples in This Manual

Merging a Full Example

Merging a Snippet

Documentation Conventions

Documentation Feedback

Requesting Technical Support

Self-Help Online Tools and Resources

Creating a Service Request with JTAC

Overview

QFX5200 System Overview

QFX5200 Switch Description

QFX5200 Hardware

QFX5200-32C and QFX5200-32C-L Hardware

QFX5200-48Y Hardware

Benefits of QFX5200 Switches

QFX5200-32C Channelization

QFX5200-32C-L Channelization

QFX5200-48Y Channelization

System Software

QFX5200 Hardware Component Overview

QFX5200 Component Redundancy

QFX5200 Field-Replaceable Units

QFX5200 Port Panels

QFX5200-32C and QFX5200-32C-L Port Panel

Network Ports

Channelizing Interfaces

Network Port LEDs

QFX5200-48Y Port Panel

Network Ports

Port Groups

Network Port LEDs

QFX5200 Switch Management

QFX5200 Management Panel Overview

QFX5200-32C and QFX5200-32C-L Management Panel

QFX5200-32C and QFX5200-32C-L Management Port and Console Port LEDs

QFX5200-48Y Management Panel

QFX5200-48Y Management Port LEDs

QFX5200 Chassis Status LEDs

QFX5200-32C and QFX5200-32C-L Chassis Status LEDs

QFX5200-48Y Chassis Status LEDs

QFX5200 Cooling System

QFX5200 Cooling System Description

Fan Modules

Do Not Install Components with Different Airflow or Wattage in the Switch

QFX5200-32C and QFX5200-32C-L Fan Module LED

QFX5200 Power System

QFX5200 AC Power Supply Description

QFX5200 AC Power Specifications

QFX5200 Power Cord Specifications

QFX5200 AC Power Supply LEDs

QFX5200 DC Power Supply Description

QFX5200 DC Power Specifications

QFX5200 DC Power Supply LEDs

QFX5200 Site Preparation Checklist

Planning a Virtual Chassis Deployment using QFX Devices

Valid Configurations for a QFX Virtual Chassis

Valid Configurations for a QFX5110 Virtual Chassis

Valid Configurations for a QFX5200 Virtual Chassis

VC Deployment Checklist

QFX5200 Site Guidelines and Requirements

QFX5200 Environmental Requirements and Specifications

General Site Guidelines

QFX5200 Grounding Cable and Lug Specifications

QFX5200 Clearance Requirements for Airflow and Hardware Maintenance

QFX5200 Chassis Physical Specifications

Site Electrical Wiring Guidelines

QFX5200 Rack Requirements

QFX5200 Cabinet Requirements

QFX5200 Network Cable and Transceiver Planning

Determining QFX5200 Optical Interface Support

Cable Specifications for QSFP+ and QSFP28 Transceivers

Understanding QFX Series Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion

Signal Loss in Multimode and Single-Mode Fiber-Optic Cables