Juniper QFX3500 Hardware Manual

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QFX3500 Device Hardware Documentation

Modified: 2017-10-05

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Juniper Networks, Inc. 1133 Innovation Way Sunnyvale, California 94089 USA 408-745-2000 www.juniper.net

Juniper Networks, the Juniper Networks logo, Juniper, and Junos are registered trademarks of Juniper Networks, Inc. and/or its affiliates in the United States and other countries. All other trademarks may be 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.

QFX3500 Device Hardware Documentation

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 OShas 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 tothe terms and conditions of the End User License Agreement (“EULA”) posted at

http://www.juniper.net/support/eula/. By downloading, installing or using such software, you agree to the terms and conditions of that

EULA.

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About the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

Documentation and Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

Supported Platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

Documentation Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

Documentation Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii

Requesting Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

Self-Help Online Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

Opening a Case with JTAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

Part 1 Overview

Chapter 1 System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

QFX3500 Device Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SFP+ Access Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

QSFP+ Uplink Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Understanding Redundancy of QFX3500 Device Components and

Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Understanding QFX Series Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

QFX Virtual Chassis Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

QFX5110 Switches in a Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

QFX5100 Switches in a Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

QFX3500 and QFX3600 Switches in a Virtual Chassis . . . . . . . . . . . . . . . . . . 11

EX4300 Switches in a QFX Series Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . 11

Understanding QFX Series Virtual Chassis Components . . . . . . . . . . . . . . . . . . . . . 11

Virtual Chassis Ports (VCPs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Maximum Switch Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Master Routing Engine Role . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Backup Routing Engine Role . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Linecard Role . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Member Switch and Member ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Mastership Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Chapter 2 Chassis Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Chassis Physical Specifications for a QFX3500 Chassis . . . . . . . . . . . . . . . . . . . . . 17

Field-Replaceable Units in a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Front Panel of a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Rear Panel of a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Access Port and Uplink Port LEDs on a QFX3500 Device . . . . . . . . . . . . . . . . . . . . 21

Chassis Status LEDs on a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

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QFX3500 Device Hardware Documentation

Management Board for a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Management Port LEDs on a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Chapter 3 Cooling System and Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Cooling System and Airflow for a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . 29

Fan Tray LED on a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Chapter 4 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device . . . . . . . . . . . 35

DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device . . . . . . . . . . . 37

AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device . . . . . . 39

DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device . . . . . . 40

Part 2 Site Planning, Preparation, and Specifications

Chapter 5 Preparation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Site Preparation Checklist for a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . 45

Environmental Requirements and Specifications for a QFX3500 Device . . . . . . . 46

General Site Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Site Electrical Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Planning a Virtual Chassis Fabric Deployment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Rack Requirements for a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Cabinet Requirements for a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Clearance Requirementsfor Airflow and Hardware Maintenance foraQFX3500

Chapter 6 Power Specifications and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

AC Power Specifications for a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . 55

AC Power Cord Specifications for a QFX Series Device . . . . . . . . . . . . . . . . . . . . . 56

DC Power Specifications for a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Grounding Cable and Lug Specifications for a QFX3500 Device . . . . . . . . . . . . . . 57

Chapter 7 Transceiver and Cable Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Determining Interface Support for the QFX3500 Device . . . . . . . . . . . . . . . . . . . . 59

Cable Specifications for QSFP+ and QSFP28 Transceivers . . . . . . . . . . . . . . . . . 60

Cable Specifications for Console and Management Connections for the QFX

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

Calculating the Fiber-Optic Cable Power Budget for a QFX Series Device . . . . . . 65

Calculating the Fiber-Optic Cable Power Margin for a QFX Series Device . . . . . . 65

Chapter 8 Pinout Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

USB Port Specifications for the QFX Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Console Port Connector Pinout Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

RJ-45 Management Port Connector Pinout Information . . . . . . . . . . . . . . . . . . . . . 71

Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Dispersion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Signal Loss in Multimode and Single-Mode Fiber-Optic Cables . . . . . . . . . . 63

Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . 64

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Table of Contents

Part 3 Initial Installation and Configuration

Chapter 9 Unpacking and Mounting the Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Installing and Connecting a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Unpacking a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Mounting a QFX3500 Device in a Rack or Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . 77

Before You Begin Rack Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Two Mounting Rails Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Four Mounting Rails Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Chapter 10 Connecting the QFX3500 Device to Power . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Connecting Earth Ground to a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Connecting AC Power to a QFX3500, QFX3600, or QFX3600-I Device . . . . . . . . 85

Connecting DC Power to a QFX3500, QFX3600, or QFX3600-I Device . . . . . . . . 88

Chapter 11 Connecting the Device to the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Connecting a Device to a Network for Out-of-Band Management . . . . . . . . . . . . 93

Connecting a Device to a Management Console by Using an RJ-45

Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Connecting QFX Series and EX Series Switches in a QFX Virtual Chassis . . . . . . . 95

Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Valid Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Cabling QFX3500 Switches in a QFX5100 Virtual Chassis . . . . . . . . . . . . . . . 97

Cabling QFX3600 Switches in a QFX Virtual Chassis . . . . . . . . . . . . . . . . . . . 99

Cabling a Mixed QFX Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Connecting a QFX3500 or QFX3600 Switch in a QFX5100 Virtual Chassis

Fabric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Chapter 12 Performing Initial Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Configuring a QFX3500 Device as a Standalone Switch . . . . . . . . . . . . . . . . . . . 105

Adding a New Switch to an Existing QFX Series Virtual Chassis (CLI

Procedure) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Configuring a QFX Series Virtual Chassis (CLI Procedure) . . . . . . . . . . . . . . . . . . 109

Understanding the Licensing Requirements for a QFX Series Virtual

Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

ConfiguringaQFX SeriesVirtual Chassiswitha Preprovisioned Configuration

File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Configuringa QFX Series Virtual Chassis with a Nonprovisioned Configuration

File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Part 4 Installing, Maintaining, and Replacing Components

Chapter 13 Replacing Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Installing and Removing QFX3500 Device Hardware Components . . . . . . . . . . . 121

Installing a Fan Tray in a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Removing a Fan Tray from a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Installing a Power Supply in a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Removing a Power Supply from a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . 127

Installing a Management Board in a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . 128

Removing a Management Board from a QFX3500 Device . . . . . . . . . . . . . . . . . . 130

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QFX3500 Device Hardware Documentation

Chapter 14 Replacing Transceivers and Fiber-Optic Cables . . . . . . . . . . . . . . . . . . . . . . 133

Installing a Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Removing a Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Connecting a Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Disconnecting a Fiber-Optic Cable from a Device . . . . . . . . . . . . . . . . . . . . . . . . . 139

Maintaining Fiber-Optic Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Chapter 15 Removing the Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Powering Off a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Removing a QFX3500 Device from a Rack or Cabinet . . . . . . . . . . . . . . . . . . . . . 145

Chapter 16 Contacting Customer Support and Returning the Chassis or

Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Returning a QFX3500 Device or Component for Repair or Replacement . . . . . . 147

Locating the Serial Number on a QFX3500 Device or Component . . . . . . . . . . . 148

Packing a QFX3500 Device or Component for Shipping . . . . . . . . . . . . . . . . . . . 149

Contacting Customer Support to Obtain a Return Materials Authorization for a

Listing the Chassis and Component Details Using the CLI . . . . . . . . . . . . . . 148

Locating the Chassis Serial Number ID Label on a QFX3500 Device . . . . . . 149

Locating the Serial Number ID Labels on FRU Components . . . . . . . . . . . . . 149

Packing a QFX3500 Device for Shipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

Packing QFX3500 Device Components for Shipping . . . . . . . . . . . . . . . . . . . 151

QFX Series Device or Component . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

Part 5 Troubleshooting

Chapter 17 Alarm Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Understanding Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Chassis Alarm Messages on a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . 156

Interface Alarm Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Chapter 18 Restoring Junos OS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Creating an Emergency Boot Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Performing a Recovery Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Part 6 Safety and Compliance Information

Chapter 19 General Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

General Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Definitions of Safety Warning Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Qualified Personnel Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Warning Statement for Norway and Sweden . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Chapter 20 Fire Safety Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Fire Safety Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Chapter 21 Installation and Maintenance Safety Information . . . . . . . . . . . . . . . . . . . . . 177

Installation Instructions Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Chassis Lifting Guidelines for a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . 178

Restricted Access Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Ramp Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180

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Table of Contents

Rack-Mounting and Cabinet-Mounting Warnings . . . . . . . . . . . . . . . . . . . . . . . . 180

Grounded Equipment Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

Chapter 22 Radiation and Laser Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Radiation from Open Port Apertures Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Laser and LED Safety Guidelines and Warnings for the QFX Series . . . . . . . . . . . 188

Class 1M Laser Product Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188

Class 1M Laser Radiation Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

Unterminated Fiber-Optic Cable Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

Chapter 23 Maintenance and Operational Safety Warnings . . . . . . . . . . . . . . . . . . . . . . . 191

Maintenance and Operational Safety Guidelines and Warnings . . . . . . . . . . . . . . 191

Battery Handling Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

Jewelry Removal Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

Lightning Activity Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Operating Temperature Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

Product Disposal Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

Chapter 24 Power and Electrical Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197

General Electrical Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . 197

Prevention of Electrostatic Discharge Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . 198

Action to Take After an Electrical Accident . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200

AC Power Electrical Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200

AC Power Disconnection Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

DC Power Electrical Safety Guidelines for Switches . . . . . . . . . . . . . . . . . . . . . . 202

DC Power Disconnection Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

DC Power Grounding Requirements and Warning . . . . . . . . . . . . . . . . . . . . . . . . 206

DC Power Wiring Sequence Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

DC Power Wiring Terminations Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

Multiple Power Supplies Disconnection Warning . . . . . . . . . . . . . . . . . . . . . . . . . 210

TN Power Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210

Chapter 25 Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213

Agency Approvals for the QFX Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213

Compliance Statements for EMC Requirements for the QFX Series . . . . . . . . . . 214

Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214

European Community . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Israel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Japan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Korea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

United States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216

Nonregulatory Environmental Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216

Statements of Volatility for Juniper Network Devices . . . . . . . . . . . . . . . . . . . . . . 217

Page 8

QFX3500 Device Hardware Documentation

Page 9

List of Figures

Part 1 Overview

Chapter 1 System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Figure 1: QFX3500 Device Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2: QFX3500 Device Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 3: SFP+ Access Port Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 4: QSFP+ Uplink Port Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Chapter 2 Chassis Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 5: QFX3500 Device Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 6: QFX3500 Device Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 7: QFX3500 Device Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 8: LEDs on the SFP+ Access Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 9: LEDs on the QSFP+ Uplink Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 10: Chassis Status LEDs on a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . 23

Figure 11: Management Board for a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 12: Management Port LEDs on a QFX3500 Device . . . . . . . . . . . . . . . . . . . 27

Chapter 3 Cooling System and Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 13: Fan Tray for a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 14: Management Board for a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . 29

Figure 15: FRU-to-Port Airflow Through the QFX3500 Chassis . . . . . . . . . . . . . . . 30

Figure 16: Port-to-FRU Airflow Through the QFX3500 Chassis . . . . . . . . . . . . . . . 31

Figure 17: Label Identifying Airflow Direction on Power Supply Handle . . . . . . . . . 31

Figure 18: Fan Tray LED in a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Chapter 4 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 19: AC Power Supply in QFX3500, QFX3600, or QFX3600-I Devices . . . . 35

Figure 20: An Arrow Icon and AFI Label Identifying Airflow Direction on Power

Supply Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Figure 21: A Fan Icon Identifying Airflow Direction on Power Supply Handle . . . . . 36

Figure 22: DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device . . . 37

Figure 23: DC Power Supply Faceplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 24: Label Identifying Airflow Direction on Power Supply Handle . . . . . . . . 39

Figure 25: AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I

Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Figure 26: DC Power Supply Faceplate on a QFX3500, QFX3600, or QFX3600-I

Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Part 2 Site Planning, Preparation, and Specifications

Chapter 5 Preparation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Page 10

QFX3500 Device Hardware Documentation

Figure 27: Clearance Requirements for Airflow and Hardware Maintenance for

Chapter 7 Transceiver and Cable Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Figure 28: QSFP+ Uplink Port Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Part 3 Initial Installation and Configuration

Chapter 9 Unpacking and Mounting the Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Figure 29: Installing an Installation Blade in a Rack . . . . . . . . . . . . . . . . . . . . . . . . 79

Figure 30: Mounting the QFX3500 Device on Four Posts in a Rack Using a

Figure 31: Attaching a Mounting Rail to the QFX3500 . . . . . . . . . . . . . . . . . . . . . . 80

Figure 32: Slide Mounting Rail onto the Rear Mounting Blade . . . . . . . . . . . . . . . . 81

Chapter 10 Connecting the QFX3500 Device to Power . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Figure 33: Connecting a Grounding Cable to a QFX3500 Device . . . . . . . . . . . . . . 85

Figure 34: Connecting an AC Power Cord to an AC Power Supply in a QFX3500

Figure 35: Connecting an AC Power Cord to an AC Power Supply in a QFX3600

Figure 36: DC Power Supply Faceplate for a QFX3500, QFX3600 or QFX3600-I

Figure 37: Securing Ring Lugs to the Terminals on the QFX3500, QFX3600 or

Chapter 11 Connecting the Device to the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Figure 38: RJ-45 Connector on an Ethernet Cable . . . . . . . . . . . . . . . . . . . . . . . . . 93

Figure 39: Connecting a Device to a Network for Out-of-Band Management . . . 94

Figure 40: RJ-45 Connector on an Ethernet Cable . . . . . . . . . . . . . . . . . . . . . . . . . 94

Figure 41: Connecting a Device to a Management Console Through a Console

Figure 42: Connecting a Device Directly to a Management Console . . . . . . . . . . . 95

Figure 43: QFX3500 Using the 40G Ports as the VCPs . . . . . . . . . . . . . . . . . . . . . 98

Figure 44: QFX3500 Using the 10G Ports as the VCPs . . . . . . . . . . . . . . . . . . . . . 99

Figure 45: QFX3600 Using the 40G Ports as the VCPs . . . . . . . . . . . . . . . . . . . . 100

Figure 46: QFX3500 and QFX3600 Mixed Using the 40G Ports as the VCPs . . . 100 Figure 47: QFX3500 and QFX3600 Mixed Using Both 40G Ports and 10G Ports

Figure 48: QFX5100 Master Connecting QFX3600 and QFX3500 Using 40G

Figure 49: Mixed Mode QFX5100 VCF with QFX3500 and QFX3600 Leaf

a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Two-Rail Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

or QFX3600-I Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

QFX3600-I DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

as the VCPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Ports as VCPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Part 4 Installing, Maintaining, and Replacing Components

Chapter 13 Replacing Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Figure 50: Installing a Fan Tray in a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . 123

Figure 51: Removing a Fan Tray from a QFX3500 Device . . . . . . . . . . . . . . . . . . . 125

Figure 52: Installing a Power Supply in a QFX3500 Device . . . . . . . . . . . . . . . . . . 126

Figure 53: Removing a Power Supply from a QFX3500 Device . . . . . . . . . . . . . . 128

Page 11

List of Figures

Figure 54: Installing a Management Board in a QFX3500 Device . . . . . . . . . . . . 129

Figure 55: Removing a Management Board from a QFX3500 Device . . . . . . . . . . 131

Chapter 14 Replacing Transceivers and Fiber-Optic Cables . . . . . . . . . . . . . . . . . . . . . . 133

Figure 56: Installing a Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Figure 57: Removing an SFP, SFP+, XFP, or a QSFP+ Transceiver . . . . . . . . . . . . . 137

Figure 58: Connecting a Fiber-Optic Cable to an Optical Transceiver Installed

in a Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Chapter 16 Contacting Customer Support and Returning the Chassis or

Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Figure 59: Location of the Serial Number ID Label on a QFX3500 Device . . . . . . 149

Part 6 Safety and Compliance Information

Chapter 24 Power and Electrical Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197

Figure 60: Placing a Component into an Antistatic Bag . . . . . . . . . . . . . . . . . . . . 199

Page 12

QFX3500 Device Hardware Documentation

Page 13

List of Tables

About the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

Table 1: Notice Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi

Table 2: Text and Syntax Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi

Part 1 Overview

Chapter 2 Chassis Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 3: Physical Specifications for the QFX3500 Device Chassis . . . . . . . . . . . . . 17

Table 4: FRUs in a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Table 5: Network Port LEDs on SFP+ Access Ports on a QFX3500 Device . . . . . . 22

Table 6: Uplink Port LEDs on QSFP+ Uplink Ports on a QFX3500 Device . . . . . . . 23

Table 7: Chassis Status LEDs on a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . 24

Table 8: Airfow Direction in QFX3500 Management Boards . . . . . . . . . . . . . . . . . 26

Table 9: Management Port LEDs on a QFX3500 Device . . . . . . . . . . . . . . . . . . . . 27

Chapter 3 Cooling System and Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 10: Airflow Direction in QFX3500 Device Models . . . . . . . . . . . . . . . . . . . . . 30

Table 11: Airflow Direction in QFX3500 Device FRUs . . . . . . . . . . . . . . . . . . . . . . . 32

Table 12: Fan Tray LED in a QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Chapter 4 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Table 13: Airfow Direction in QFX3500, QFX3600, or QFX3600-I AC Power

Table 14: Airflow Direction in QFX3500, QFX3600, and QFX3600-I Device DC

Table 15: AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I

Table 16: DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I

Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Part 2 Site Planning, Preparation, and Specifications

Chapter 5 Preparation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Table 17: Site Preparation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Table 18: QFX3500 Device Environmental Tolerances . . . . . . . . . . . . . . . . . . . . . . 47

Table 19: Site Electrical Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Table 20: Deployment Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Table 21: Rack Requirements for the QFX3500 Device . . . . . . . . . . . . . . . . . . . . . . 51

Table 22: Cabinet Requirements for the QFX3500 Device . . . . . . . . . . . . . . . . . . . 52

Chapter 6 Power Specifications and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Table 23: AC Power Specifications for a QFX3500 Device . . . . . . . . . . . . . . . . . . . 55

Page 14

QFX3500 Device Hardware Documentation

Table 24: AC Power Cord Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Table 25: DC Power Specifications for a QFX3500 Device . . . . . . . . . . . . . . . . . . . 57

Chapter 7 Transceiver and Cable Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Table 26: QSFP+ and QSFP28 Optical Module Receptacle Pinouts . . . . . . . . . . . 61

Table 27: QSFP+ MPO Fiber-Optic Crossover Cable Pinouts . . . . . . . . . . . . . . . . . 61

Table 28: Cable Specifications for Console and Management Connections for

Table 29: Estimated Values for Factors Causing Link Loss . . . . . . . . . . . . . . . . . . 66

Chapter 8 Pinout Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Table 30: Console Port Connector Pinout Information . . . . . . . . . . . . . . . . . . . . . . 70

Table 31: RJ-45 Management Port Connector Pinout Information . . . . . . . . . . . . . 71

Part 3 Initial Installation and Configuration

Chapter 9 Unpacking and Mounting the Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Table 32: Inventory of Components Supplied with a QFX3500 Device . . . . . . . . . 76

Part 5 Troubleshooting

the QFX Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Chapter 17 Alarm Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Table 33: Alarm Terms and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Table 34: QFX3500 Chassis Alarm Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

Page 15

About the Documentation

•

Documentation and Release Notes on page xv

•

Supported Platforms on page xv

•

Documentation Conventions on page xv

•

Documentation Feedback on page xvii

•

Requesting Technical Support on page xviii

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

http://www.juniper.net/techpubs/.

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 http://www.juniper.net/books.

Supported Platforms

For the features described in this document, the following platforms are supported:

•

QFabric System

•

QFX Series

Documentation Conventions

Table 1 on page xvi defines notice icons used in this guide.

Page 16

QFX3500 Device Hardware Documentation

Table 1: Notice Icons

DescriptionMeaningIcon

Indicates important features or instructions.Informational note

Indicates a situation that might result in loss of data or hardware damage.Caution

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

Table 2 on page xvi defines the text and syntax conventions used in this guide.

Table 2: Text and Syntax Conventions

Represents text that you type.Bold text like this

Fixed-width text like this

Italic 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.

Represents variables (options for which you substitute a value) in commands or configuration statements.

Alerts you to a recommended use or implementation.Best practice

ExamplesDescriptionConvention

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

Configure the machine’s domain name:

[edit] root@# set system domain-name

domain-name

Page 17

Table 2: Text and Syntax Conventions (continued)

Text like this

Represents names of configuration statements, commands, files, and directories;configurationhierarchylevels; or labels on routing platform components.

About the Documentation

ExamplesDescriptionConvention

•

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 variables.< > (angle brackets)

| (pipe symbol)

# (pound sign)

[ ] (square brackets)

Indention and braces ( { } )

; (semicolon)

GUI Conventions

Bold text like this

Indicatesa choice between the mutually exclusivekeywordsor variables on either side of the symbol. The set of choices is often enclosed in parentheses for clarity.

same line as the configurationstatement 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.

Representsgraphicaluser interface (GUI) items you click or select.

broadcast | multicast

(string1 | string2 | string3)

rsvp { # Required for dynamic MPLS onlyIndicates a comment specified on the

community name members [ community-ids ]

[edit] routing-options {

static {

route default {

nexthop address; retain;

}

•

In the Logical Interfaces box, select

All Interfaces.

•

To cancel the configuration, click

Cancel.

> (bold right angle bracket)

Documentation Feedback

We encourage you to provide feedback, comments, and suggestions so that we can improve the documentation. You can provide feedback by using either of the following methods:

•

Online feedback rating system—On any page of the Juniper Networks TechLibrary site at http://www.juniper.net/techpubs/index.html,simply click the stars to ratethe content, and use the pop-up form to provide us with information about your experience. Alternately, you can use the online feedback form at

http://www.juniper.net/techpubs/feedback/.

Separates levels in a hierarchy of menu selections.

In the configuration editor hierarchy, select Protocols>Ospf.

Page 18

QFX3500 Device Hardware Documentation

•

E-mail—Sendyourcomments 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 availablethrough the Juniper NetworksTechnical Assistance Center (JTAC). If you are a customer with an active J-Care or Partner Support Service 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.

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JTAC policies—For a complete understanding of our JTAC procedures and policies, review the JTAC User Guide located at

http://www.juniper.net/us/en/local/pdf/resource-guides/7100059-en.pdf.

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Product warranties—For product warranty information, visit

http://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:

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Find CSC offerings: http://www.juniper.net/customers/support/

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Search for known bugs: https://prsearch.juniper.net/

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Find product documentation: http://www.juniper.net/documentation/

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Find solutions and answer questions using our Knowledge Base: http://kb.juniper.net/

•

Download the latest versions of software and review release notes:

http://www.juniper.net/customers/csc/software/

•

Search technical bulletins for relevant hardware and software notifications:

http://kb.juniper.net/InfoCenter/

•

Join and participate in the Juniper Networks Community Forum:

http://www.juniper.net/company/communities/

•

Open a case online in the CSC Case Management tool: http://www.juniper.net/cm/

To verify service entitlementby productserial number,use our Serial Number Entitlement (SNE) Tool: https://entitlementsearch.juniper.net/entitlementsearch/

Opening a Case with JTAC

You can open a case with JTAC on the Web or by telephone.

•

Use the Case Management tool in the CSC at http://www.juniper.net/cm/.

•

Call 1-888-314-JTAC (1-888-314-5822 toll-free in the USA, Canada, and Mexico).

Page 19

About the Documentation

For international or direct-dial options in countries without toll-free numbers, see

http://www.juniper.net/support/requesting-support.html.

Page 20

QFX3500 Device Hardware Documentation

Page 21

PART 1

Overview

•

System Overview on page 3

•

Chassis Components and Descriptions on page 17

•

Cooling System and Airflow on page 29

•

Power Supplies on page 35

Page 22

QFX3500 Device Hardware Documentation

Page 23

CHAPTER 1

System Overview

•

QFX3500 Device Overview on page 3

•

Understanding Redundancy of QFX3500 Device Components and Functionality on page 7

•

Understanding QFX Series Virtual Chassis on page 8

•

Understanding QFX Series Virtual Chassis Components on page 11

QFX3500 Device Overview

The Juniper Networks QFX3500 device is a high-speed, multipurpose switch especially designed for next-generation data centers. The QFX3500 can be configured as a standalone switch, a Node device in a QFabric system, or as a member of a QFX Virtual Chassis.

Forty-eight 10-Gbps access ports in the device use small form-factor pluggable plus (SFP+) transceivers and operate by default as 10-Gigabit Ethernet interfaces. Optionally, you can choose to configure up to 12 of the ports as 2-Gbps, 4-Gbps, or 8-Gbps Fibre Channel (FC) interfaces, and up to 36 of the ports as 1-Gigabit Ethernet interfaces. When used as a standalone switch, four 40-Gbps uplink ports in the device use quad small form-factor pluggable plus (QSFP+) to four SFP+ copper breakout cables to support an additional 15 10-Gigabit Ethernet interfaces.

QFX3500 devices can function as a Fibre Channel over Ethernet (FCoE)-FC gateway or as an FCoE transit switch. FCoE is a method of supporting converged FC and Ethernet traffic on a data center bridging (DCB) network by encapsulating unmodified FC frames in Ethernet to transport the FC frames over the physical Ethernet network.

In a QFabric system, a QFX3500 device functions as a Node device, connected to a QFabric system through 40-Gbps uplink ports to a Juniper Networks QFX3008-I or QFX3600-I Interconnect device. Together, the QFX3500 Node devices and QFX3008-I or QFX3600-I Interconnect devices form a multistage, nonblocking switch fabric that provides a high-performance, low-latency, unified interconnect solution for next-generation data centers.

TheQFX3500 Node devices and Interconnect devices are connectedto Juniper Networks QFX3100 Director devices in an out-of-band management network through Juniper NetworksEX4200 Ethernet Switches.The QFX3100 Directordevices present the QFabric

Page 24

QFX3500 Device Hardware Documentation

system devices as a single network entity, which enables simplified management of your data center using the Junos OS command-line interface (CLI).

In a QFX Virtual Chassis, the QFX3500 device can participate with other QFX3500 devices and QFX3600 devices in a ring topology with up to 10 members.

In a QFX5100 Virtual Chassis Fabric, the QFX3500 device can participate as a leaf device. Up to a total of 20 devices can participate in the QFX5100 Virtual Chassis Fabric.

•

Software on page 4

•

Hardware on page 4

Software

QFX Series devices use the Junos operating system (OS), which provides Layer 2 and Layer 3 switching, routing, and security services. Junos OS is installed on the QFX3500 device’s 8-gigabyte (GB) internal flash drive. The same Junos OS code base that runs on QFX3500 devices also runs on all Juniper Networks EX Series switches, and J Series, M Series, MX Series, and T Series routers.

Hardware

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

Feature Explorer.

When the QFX3500 device is operating as a standalone switch, 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.

When a QFX Series device operates as part of a QFabric system, all the devices in the data center fabric are managed through the Administrator software installed on the QFX3100 Director devices. Each device in a QFabric system is interconnected in a single control plane and management network, using the redundant management ports on each device.

The compact QFX3500 device is 1 rack unit (1 U) in size and designed to fit in industry-standard 19-inch rack-mount enclosures. See Figure 1 on page 5 and

Figure 2 on page 5 and “Chassis Physical Specifications for a QFX3500 Chassis” on page 17.

NOTE: The standard mounting configuration for the QFX3500 device uses

a two rail mounting system. The QFX3500-RB-ACRB device model uses a four rail mounting system for installations that need to recess the switch or need to mount the port (rear) end of the switch forward.

Page 25

Figure 1: QFX3500 Device Front

FX3500-48S4Q

Management board

Fan tray

Power supply

Mounting bracket

g050000

ESD point/ serial number ID label

g050001

QSFP+ uplink ports

SFP+ access ports

Figure 2: QFX3500 Device Rear

Chapter 1: System Overview

The front panel of the QFX3500 chassis has an LCD panel that displays the device hostname and the number of active alarms. See “Front Panel of a QFX3500 Device” on

page 19. The rear panel has 48 10-Gbps access ports and 4 40-Gbps uplink ports. See “Rear Panel of a QFX3500 Device” on page 20.

SFP+ Access Ports

The QFX3500 device has 48 access ports (0 through 47) that support small form-factor pluggable plus (SFP+) and small form-factor pluggable (SFP) transceivers, as well as SFP+ direct attach copper cables, also known as Twinax cables. See “Determining

Interface Support for the QFX3500 Device” on page 59.

•

Up to 48 of the access ports can be used for SFP+ transceivers or SFP+ direct attach copper cables. You can use 10-Gigabit Ethernet SFP+ transceivers and SFP+ direct attach copper cables in any access port. You can use 2-Gbps, 4-Gbps, or 8-Gbps Fibre Channel SFP+ transceivers in ports 0 through 5 and ports 42 through 47.

NOTE: If you use Fibre Channel SFP+ transceivers in ports 0 through 5 or

ports 42 through 47, you must configure the entire block of ports as Fibre Channel ports. For example, if you use a Fibre Channel SFP+ transceiver in any of the ports 0 through 5, then ports 0 through 5 must be configured as Fibre Channel ports. If you use a Fibre Channel SFP+ transceiverin any of the ports 42 through 47, then ports 42 through 47 must be configured as Fibre Channel ports. You then cannot use 10-Gigabit Ethernet SFP+ transceivers in these ports.

Page 26

10-Gigabit Ethernet or Fibre Channel ports

QSFP+ Uplink ports

10-Gigabit Ethernet or Fibre Channel ports

10-Gigabit Ethernet or 1-Gigabit Ethernet ports

Q0 Q1 Q2 Q3 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 470 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

g050013

0 1 2 3 4 5

42 43 44 45 46 47

QFX3500 Device Hardware Documentation

•

Up to 36 of the access ports can be used for SFP transceivers. Gigabit Ethernet SFP transceivers can be used in ports 6 through 41.

Figure 3 on page 6 shows the location of the SFP+ access ports, including the ports that

can be used with Fibre Channel SFP+ transceiversand Gigabit Ethernet SFP transceivers.

Figure 3: SFP+ Access Port Locations

CAUTION: Do not place a copper transceiver in an access port directly

above or below another copper transceiver. Internal damage to the access ports and device can occur. Because of this limitation, a maximum of 18 copper transceivers can be installed in ports 6 through 41. We recommend using only the top row of access ports for copper transceivers.

QSFP+ Uplink Ports

The QFX3500 devicehas fouruplink ports (Q0 through Q3) thatsupport up tofour QSFP+ transceivers, as well as QSFP+ DAC or DAC breakout cables. See “Determining Interface

Support for the QFX3500 Device” on page 59.

When the QFX3500 device is used as part of a QFabric system, these uplink ports are used to connect the QFX3500 Node device to QFX3008-I or QFX3600-I Interconnect devices. See Connecting a QFX3500 Node Device to a QFX3008-I Interconnect Device or Connecting a QFX3500 Node Device to a QFX3600-I Interconnect Device.

When the QFX3500 device is used as a standalone switch, these uplink ports are configuredby default as 15 10-Gigabit Ethernet interfaces.Another option for these ports is to configure one or more of the ports as 40-Gigabit Ethernet interfaces.

Figure 4 on page 7 shows the location of the QSFP+ uplink ports and the default

10-Gigabit Ethernet interface numbering.

NOTE: Port Q0 is unique in that the number of 10-Gigabit Ethernet interfaces

supported varies by Junos OS release. In some Junos OS releases, port 00 has a reserved port and in other releasesthe port is available. See the topics on Channelizing Interfaces or Configuring the Port Type, for your specific release.

Page 27

NOTE: The QSFP+ uplink ports are not supported in Junos OS Release 11.1.

QSFP+ ports

Q0 Q1 Q2 Q3 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 470 1 2 3 4 5 6 7 8 9 34 35 36 37 38 39 40 41 42 43 44 45 46 47

Q0 Q1 Q2 Q3

g050023

xe- 0/1/0

xe-0/1/1*

through xe-0/1/3

xe-0/1/4

through xe-0/1/7

xe-0/1/8

through xe-0/1/11

xe-0/1/12

through xe-0/1/15

*Port availability is release dependent. See the topic on Channelizing Interfaces for your Junos Release.

The QSFP+ uplink ports are supported in Junos OS Release 11.2 and later. To configure the ports as 40-Gigabit Ethernet interfaces, you must be using Junos OS Release 12.2X50-D20 or later.

Figure 4: QSFP+ Uplink Port Locations

Chapter 1: System Overview

Documentation

Field-Replaceable Units in a QFX3500 Device on page 18•

• Site Preparation Checklist for a QFX3500 Device on page 45

• Access Port and Uplink Port LEDs on a QFX3500 Device on page 21

• Installing and Removing QFX3500 Device Hardware Components on page 121

Understanding Redundancy of QFX3500 Device Components and Functionality

The following hardware components provide redundancy on a QFX3500 device:

•

Power supplies—The QFX3500 device has one or two power supplies. Each power supply provides power to all components in the device. 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.

•

Cooling system—The QFX3500 device has two fan trays. Additional cooling is provided by two fan modules on the management board. If a fan module on a fan tray or management board fails and is unable to keep the QFX3500 device within the desired

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

input terminal.

Page 28

QFX3500 Device Hardware Documentation

temperature thresholds, chassis alarms occur and the QFX3500 device may shut down.

Documentation

AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 35•

• DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 37

• Cooling System and Airflow for a QFX3500 Device on page 29

Understanding QFX Series Virtual Chassis

This topic discusses QFX Series Virtual Chassis. A QFX Series Virtual Chassis is a supported combination of interconnected QFX3500, QFX3600, QFX5100, QFX5110, and EX4300 switches operating as one logical device and managed as a single chassis. Switches in a Virtual Chassis are called members of the Virtual Chassis.

This topic does not discuss Virtual Chassis Fabric (VCF). For informationon understanding VCF, see Virtual Chassis Fabric Overview.

This topic includes:

•

QFX Virtual Chassis Overview on page 8

•

QFX5110 Switches in a Virtual Chassis on page 9

•

QFX5100 Switches in a Virtual Chassis on page 10

•

QFX3500 and QFX3600 Switches in a Virtual Chassis on page 11

•

EX4300 Switches in a QFX Series Virtual Chassis on page 11

QFX Virtual Chassis Overview

A QFX Series Virtual Chassis is a flexible, scaling switch solution for supported combinationsof QFX3500, QFX3600,QFX5100,and QFX5110 switches. EX4300 switches can also be included in some configurations of a QFX Series Virtual Chassis..

In a QFX Series Virtual Chassis, you can interconnect up to ten standalone switches in the following combinations into one logical device, and manage the logical device as a single chassis:

•

QFX5110 switches or a combination of QFX5110 and QFX5100 switches (a non-mixed Virtual Chassis)

•

QFX5100 switches (a non-mixed Virtual Chassis)

•

QFX5100 switches with any combinationof QFX3500, QFX3600,or EX4300 switches (a mixed mode Virtual Chassis)

•

QFX3500switches or QFX3600 switches, or a combination of QFX3500 and QFX3600 switches (a non-mixed Virtual Chassis)

•

QFX3500 or QFX3600 switches with EX4300 switches, or a combination of all three types of switches (a mixed mode Virtual Chassis)

Page 29

Chapter 1: System Overview

The advantages of connecting multiple switches into a Virtual Chassis include better-managed bandwidth at a networklayer, simplified configurationand maintenance because multiple devices can be managed as a single device, increased fault tolerance and high availability(HA) because a Virtual Chassis can remain active and network traffic can be redirected to other member switches when a single member switch fails, and a flatter, simplified Layer 2 network topology that minimizes or eliminates the need for loop prevention protocols such as Spanning Tree Protocol (STP).

You set up a Virtual Chassis by configuring Virtual Chassis ports (VCPs) on the member switches, and interconnecting the switches using the VCPs . VCPs are responsible for passing all data and control traffic between member switches in theVirtual Chassis. The following ports on QFX Series switches that support Virtual Chassis can be configured into VCPs to form a QFX Series Virtual Chassis:

•

Any 100-Gbps or 40-Gbps QSFP28 ports on QFX5110 switches

•

Any non-channelized 40-Gbps QSFP+ ports on QFX3500, QFX3600, QFX5100, or QFX5110 switches

•

Any fixed 10-Gbps SFP+ ports on QFX Series switches with these ports

See EX4300 Switches Hardware Overview for details on the ports on an EX4300 switch that can be configured into VCPs in a QFX Series Virtual Chassis.

You can increase VCP bandwidth between member switches by configuring multiple interfaces between the same two switches into VCPs. When multiple VCPs interconnect the same two member switches, a Link Aggregation Group (LAG) or bundle is automatically formed when the VCPs are on interfaces supporting identical speeds. For example, if you have two 40-Gbps QSFP+ interfaces configured as VCPs between member switches, a LAG with two member links with 80Gbps of total bandwidth is formed. However, 10-Gbps SFP+ and 40-Gbps QSFP+ interfaces configured as VCPs will not become members of the same VCP LAG.

QFX5110 Switches in a Virtual Chassis

Starting in Junos OS Release 17.3R1, Virtual Chassis is supported on QFX5110 switches.

You can interconnect up to ten QFX5110 switches or a combination of QFX5110 and QFX5100 switches intoa QFX5110 Virtual Chassis. All switches can run the same software image, and you do not need to configure mixed mode.

The following QFX5110 and QFX5100 switches are supported in a QFX5110 Virtual Chassis:

•

QFX5110-32Q

•

QFX5110-48S

•

QFX5100-24Q

•

QFX5100-48S

•

QFX5100-96S

Page 30

QFX3500 Device Hardware Documentation

QFX5100 Switches in a Virtual Chassis

Starting in Junos OS Release 13.2X51-D20, Virtual Chassis is supported on QFX5100 switches.You can interconnect up to ten switches into a QFX5100 Virtual Chassis that can include any combination of QFX5100, QFX3500, QFX3600, and EX4300 switches.

NOTE: In Junos OS release13.2X51-D20, you can interconnect only up to four

QFX5100-96S switches in a non-mixed QFX5100 Virtual Chassis. Starting in Junos OS release 13.2X51-D25, you can configure up to ten QFX5100-96S switches into a mixed or non-mixed QFX Series Virtual Chassis.

The following QFX5100 switches are supported in a non-mixed QFX5100 Virtual Chassis or a mixed QFX5100 Virtual Chassis (QFX5100 switches with QFX3500, QFX3600, or EX4300 switches):

•

QFX5100-24Q

•

QFX5100-48S

•

QFX5100-48T

•

QFX5100-96S

NOTE: QFX5100-24Q switches should be configured as the Routing Engine

role members in a mixed QFX5100 Virtual Chassis.

QFX5100 switches can also be part of a QFX5110 Virtual Chassis, which can include a combination of up to ten QFX5110 and QFX5100 switches. For a QFX5100 switch to participatein a QFX5110 Virtual Chassis, the switchmust have the same software version and image installed as the software running on the QFX5110 switches in the Virtual Chassis. You do not need to configure mixed mode. In a QFX5110 Virtual Chassis, we recommend to use QFX5110 switches in the master and backup Routing Engine roles, and QFX5100 switches only in the linecard role.

The following QFX5100 switches are supported in a QFX5110 Virtual Chassis:

•

QFX5100-24Q

•

QFX5100-48S

•

QFX5100-96S

CAUTION: A QFX5100 switch running a Junos OS software image with

“-qfx-5-” in the package filename must first be upgraded to a Junos OS software image with “-qfx-5e-” in the package filename before it can be added to a QFX5110 Virtual Chassis or VCF. See Upgrading a QFX5100 Switch with a USB Device to Join a QFX5110 Virtual Chassis or Virtual Chassis Fabric.

Page 31

QFX3500 and QFX3600 Switches in a Virtual Chassis

Virtual Chassis is supported on QFX3500 and QFX3600 series switches. To be included in a Virtual Chassis, QFX3500 and QFX3600 series switches must be configured as standalone switches and not as QFX node devices in a QFabric system.

QFX3500 and QFX3600 devices must be running a version of Junos OS for QFX devices that supports Virtual Chassis,and can be in a Virtual Chassiswith up to ten total members including QFX3500 or QFX3600 switches only, or any combination of QFX3500, QFX3600, QFX5100, and EX4300 switches.

EX4300 Switches in a QFX Series Virtual Chassis

Virtual Chassis is supported on EX4300 switches. Starting in Junos OS Release

13.2X51-D20, EX4300 switches can be interconnected into a QFX Series Virtual Chassis with QFX3500 switches, QFX3600 switches, and QFX5100 switches.

A mixed or non-mixed QFX Series Virtual Chassis that includes EX4300 switches can contain up to ten total member switches including any combination of QFX3500, QFX3600, and QFX5100 switches with EX4300 switches.

Chapter 1: System Overview

Release History Table DescriptionRelease

Starting in Junos OS Release 17.3R1, Virtual Chassis is supported on QFX5110 switches.

Starting in Junos OS release 13.2X51-D25, you can configure up to ten QFX5100-96S switches into a mixed or non-mixed QFX Series Virtual Chassis.

Starting in Junos OS Release 13.2X51-D20, Virtual Chassis is supported on QFX5100 switches.

In Junos OS release 13.2X51-D20, you can interconnect only up to four QFX5100-96S switches in a non-mixed QFX5100 Virtual Chassis.

Starting in Junos OS Release 13.2X51-D20, EX4300 switches can be interconnected into a QFX Series Virtual Chassis with QFX3500 switches, QFX3600 switches, and QFX5100 switches.

Documentation

17.3R1

13.2X53-D25

13.2X51-D20

Understanding QFX Series Virtual Chassis Components on page 11•

• Configuring a QFX Series Virtual Chassis (CLI Procedure) on page 109

Understanding QFX Series Virtual Chassis Components

This topic describes the components of a QFX Series Virtual Chassis. A QFX Series Virtual Chassis is a supported combination of up to ten standalone QFX3500, QFX3600, QFX5100,or QFX5110switches interconnectedand managedas a single chassis.(EX4300

Page 32

QFX3500 Device Hardware Documentation

switches can also be interconnected into a mixed Virtual Chassis with QFX3500, QFX3600, and QFX5100 switches.)

This topic does not discuss Virtual Chassis Fabric components. For informationon Virtual Chassis Fabric components, see Understanding Virtual Chassis Fabric Components.

This topic covers:

•

Virtual Chassis Ports (VCPs) on page 12

•

Maximum Switch Support on page 12

•

Master Routing Engine Role on page 13

•

Backup Routing Engine Role on page 14

•

Linecard Role on page 14

•

Member Switch and Member ID on page 15

•

Mastership Priority on page 16

Virtual Chassis Ports (VCPs)

The following options are available for configuring VCPs on the switches in a QFX Series Virtual Chassis:

•

Any 100-Gbps or 40-Gbps QSFP28 ports on QFX5110 switches can be configured into VCPs.

•

Any non-channelized 40-Gbps QSFP+ interfaces on QFX3500, QFX3600, QFX5100, and QFX5110 switches can be configured into VCPs.

•

40-Gbps QSFP+ interfaces that have been channelized into SFP+ interfaces using a breakout cable cannot be configured into VCPs, but all other non-channelized SFP+ interfaces on QFX series switches can be configured into VCPs, and can also be used to interconnect EX4300 switches into a mixed QFX and EX Series Virtual Chassis.

You can increase VCP bandwidth between member switches by configuring multiple interfaces between the same two switches into VCPs. When multiple VCPs interconnect the same two member switches, a Link Aggregation Group (LAG) or bundle is automatically formed when the VCPs are on interfaces supporting identical speeds. For example, if you have two 40-Gbps QSFP+ interfaces configured as VCPs between member switches, a LAG with two member links with 80-Gbps of total bandwidth is formed. However, 10-Gigabit SFP+ and 40-Gbps QSFP+ interfaces configured as VCPs will not become members of the same LAG. See Understanding Virtual Chassis Port Link Aggregation.

Maximum Switch Support

In a QFX Series Virtual Chassis, you can interconnect up to 10 standalone switches in the following supported combinations:

Page 33

Chapter 1: System Overview

•

QFX5110 switches or a combination of QFX5110 switches and QFX5100 switches (a non-mixed Virtual Chassis)

•

QFX5100 switches (a non-mixed Virtual Chassis)

•

QFX5100 switches with any combinationof QFX3500, QFX3600,or EX4300 switches (a mixed mode Virtual Chassis)

•

QFX3500 switches, or QFX3600 swtiches, or any combination of QFX3500 switches and QFX3600 switches (a non-mixed Virtual Chassis)

•

Any combination of QFX3500 and QFX3600 switcheswith EX4300 switches (a mixed mode Virtual Chassis)

NOTE: In Junos OS release13.2X51-D20, you can interconnect only up to four

Master Routing Engine Role

In a Virtual Chassis, each member switch is assigned one of two roles: Routing Engine or linecard, and for Routing Engine role, receives a further designation as the master or backup Routing Engine.

Themember that functions as the masterin the Routing Engine role in the Virtual Chassis:

•

Manages the member switches.

•

Runs Junos OS for the switches as a master Routing Engine.

•

Runs the chassis management processes and control protocols.

•

Represents all the member switches interconnected within the Virtual Chassis configuration.(The hostname and other properties that you assign to this switch during setup apply to all members of the Virtual Chassis configuration.)

In a preprovisioned configuration, one of the two members assigned as routing-engine functions as the master member. The selection of which member assigned as

routing-engine functions as master and which as backup is determined by the software

based on the master election algorithm. See Understanding How the Master in a Virtual Chassis Is Elected.

In a configuration that is not preprovisioned, the selection of the master and backup is determined by the mastership priority value and secondary factorsin the master election algorithm.

All switches that are not assigned the master or backup Routing Engine role function in the linecard role.

In a QFX5110 Virtual Chassis with QFX5110 and QFX5100 switches, we recommend configuring only QFX5110 switches into the Routing Engine role.

Page 34

QFX3500 Device Hardware Documentation

In a mixed QFX Series Virtual Chassis made up of QFX5100 switches with QFX3500, QFX3600, or EX4300 switches, we recommend configuring QFX5100 switches into the Routing Engine role. If the mixed Virtual Chassis does not contain QFX5100 switches, we recommend configuring QFX3500 or QFX3600 switches into the Routing Engine role.

Backup Routing Engine Role

The member that functions in the backup Routing Engine role in a Virtual Chassis:

•

Maintains a stateof readiness to take over the master Routing Engine role if the master fails.

•

Runs Junos OS for the switches as a backup Routing Engine.

•

Synchronizeswith the master in terms of protocol states, forwarding tables, and other information,so that it is prepared to preserve routing information and maintain network connectivity without disruption in case the master is unavailable.

You must have at least two member switches in the Virtual Chassis configuration in order to have a backup Routing Engine member.

Linecard Role

In a preprovisioned configuration, one of the two members assigned as routing-engine functions in the backup role. The selection of which member assigned as routing-engine functions as master and which as backup is determined by the software based on the master election algorithm. See Understanding How the Master in a Virtual Chassis Is Elected.

In a configuration that is not preprovisioned, the selection of the master and backup is determined by the mastership priority value and secondary factorsin the master election algorithm.

In a QFX5110 Virtual Chassis with QFX5110 and QFX5100 switches, we recommend configuring only QFX5110 switches into the Routing Engine role.

In a mixed QFX Series Virtual Chassis made up of QFX5100 switches with QFX3500, QFX3600, or EX4300 switches, we recommend configuring the QFX5100 switches into the Routing Engine role. If the mixed Virtual Chassis does not contain QFX5100 switches, we recommend configuringQFX3500 or QFX3600 switches into the Routing Engine role.

A member that functions in the linecard role in a Virtual Chassis:

•

Runs only a subset of Junos OS.

•

Does not run the chassis control protocols.

•

Can detect certain error conditions (such as an unplugged cable) on any interfaces that have been configured on it through the master.

The Virtual Chassis configuration must have at least three members in order to include a linecard member.

Page 35

In a preprovisioned configuration, you can explicitly configure a member with the linecard role, which makes it ineligible for functioning as a master or backup Routing Engine.

In a configurationthat is not preprovisioned,the members that are not selectedas master or backup function as linecard members of the Virtual Chassis configuration.The selection of the master and backup is determined by the mastership priority value and secondary factors in the masterelection algorithm. A switch with a mastership priority of 0 is always in the linecard role.

Any switch can function in the linecard role in a mixed or non-mixed Virtual Chassis.

In a QFX5110 Virtual Chassis made up of QFX5110 and QFX5100 switches,we recommend configuring only QFX5110 switches into the Routing Engine role.

Member Switch and Member ID

Chapter 1: System Overview

Each standalone switch that supports Virtual Chassis is a potential member of a Virtual Chassis configuration. When one of those switches is powered on, it receives a member ID that can be seen by viewing the front-panel LCD or by entering the show virtual-chassis command. If the switch is powered on as a standalone switch, that member’s member ID is always0. When the switch is interconnectedwith other switches in a Virtual Chassis configuration, its member ID is assigned by the master based on various factors, such as the order in which the switch was added to the Virtual Chassis configuration or the member ID assigned by a preprovisionedconfiguration.See Understanding How the Master in a Virtual Chassis Is Elected.

If the Virtual Chassis configuration previously included a member switch and that member was physically disconnected or removed from the Virtual Chassis configuration, its member ID is not availablefor assignment as part of the standard sequential assignment by the master. For example, you might have a Virtual Chassis configuration composed of member 0, member 2, and member 3, because member 1 was removed. When you add another member switch and power it on, the master assigns it as member 4.

Themember ID distinguishes the member switches fromone another.You use the member ID:

•

To assign a mastership priority value to a member switch

•

To configure interfaces for a member switch (The function is similar to that of a slot number on Juniper Networks routers.)

•

To apply some operational commands to a member switch

•

To display status or characteristics of a member switch

Page 36

QFX3500 Device Hardware Documentation

Mastership Priority

In a configurationthat is not preprovisioned,youcan designate the role (master or backup RoutingEngine, or linecard) that a member switch assumes by configuring its mastership priority (from 0 through 255). The mastership priority value is the factor in the master election algorithm with the highest precedence for selecting the master of the Virtual Chassis configuration. A switch with a mastership priority of 0 never assumes the backup or master Routing Engine role.

The default value for mastership priority is 128. When a standalone switch is powered on, it receives the default mastership priority value. Because it is the only member of the Virtual Chassis configuration, it is also the master. When you interconnect a standalone switch to an existing Virtual Chassis configuration (which implicitly includes its own master), we recommend that you explicitly configure the mastership priority of the members that you want to function as the master and backup.

In a preprovisioned configuration, you assign the role of each member switch.

Release History Table DescriptionRelease

Documentation

13.2X53-D25

13.2X51-D20

• Understanding QFX Series Virtual Chassis on page 8

• Configuring a QFX Series Virtual Chassis (CLI Procedure) on page 109

Starting in Junos OS release 13.2X51-D25, you can configure up to ten QFX5100-96S switches into a mixed or non-mixed QFX5100 Virtual Chassis.

In Junos OS release 13.2X51-D20, you can interconnect only up to four QFX5100-96S switches in a non-mixed QFX5100 Virtual Chassis.

Page 37

CHAPTER 2

Chassis Components and Descriptions

•

Chassis Physical Specifications for a QFX3500 Chassis on page 17

•

Field-Replaceable Units in a QFX3500 Device on page 18

•

Front Panel of a QFX3500 Device on page 19

•

Rear Panel of a QFX3500 Device on page 20

•

Access Port and Uplink Port LEDs on a QFX3500 Device on page 21

•

Chassis Status LEDs on a QFX3500 Device on page 23

•

Management Board for a QFX3500 Device on page 24

•

Management Port LEDs on a QFX3500 Device on page 26

Chassis Physical Specifications for a QFX3500 Chassis

The QFX3500 device chassis is a rigid sheet-metal structure that houses the hardware components. Table 3 on page 17 summarizes the physical specifications of the QFX3500 chassis.

Table 3: Physical Specifications for the QFX3500 Device Chassis

ValueDescription

1.74 in. (4.4 cm)Chassis height

•

Chassis width

Chassis depth

Weight

Documentation

Rack Requirements for a QFX3500 Device on page 51•

Including mounting brackets: 19 in. (48.3 cm)

•

Excluding mounting brackets: 17.4 in. (44.2 cm)

•

Including FRU handles and locking levers: 29.2 in. (74.2 cm)

•

Excluding FRU handles and locking levers: 28 in. (71.1 cm)

•

With FRUs installed: 30.8 lb (14 kg)

•

Without FRUs installed: 23.8 lb (11 kg)

•

AC power supply: 2.2 lb (1 kg)

•

Fan tray: 0.9 lb (0.4 kg)

•

Management board: 1.3 lb (0.6 kg)

Page 38

QFX3500 Device Hardware Documentation

• Cabinet Requirements for a QFX3500 Device on page 52

• Mounting a QFX3500 Device in a Rack or Cabinet on page 77

• Installing and Connecting a QFX3500 Device on page 75

• Installing and Removing QFX3500 Device Hardware Components on page 121

Field-Replaceable Units in a QFX3500 Device

Field-replaceable units (FRUs) are components that you can replace at your site. The QFX3500 device FRUs except the management board are hot-insertable and hot-removable: you can remove and replace them without powering off the device or disrupting the switching function.

CAUTION: Replace a failed power supply with a blank panel or new power

supply within 1 minute of removal to prevent chassis overheating. Replace a failed fan tray with a new fan tray within 1 minute of removal to prevent chassis overheating.

Table 4 on page 18 lists the FRUs for the QFX3500 device and actions to take before

removing them.

Table 4: FRUs in a QFX3500 Device

Required ActionFRU

None.Power supplies

None.Fan trays

Management board

Optical transceivers

You must power off the QFX3500 device before replacing the management board. See

“Removing a Management Board from a QFX3500 Device” on page 130.

None. We recommend that you disable the interface using the set interfaces

interface-name disable command before you remove the transceiver. See Disconnecting

a Fiber-Optic Cable from a QFX Series Device.

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

change, or upgrade of hardware components at

https://www.juniper.net/customers/csc/management/updateinstallbase.jsp .

Failureto do so can resultin significant delays if you need replacement parts. This note does not apply if you replace existing components with the same type of component.

Documentation

Installing and Removing QFX3500 Device Hardware Components on page 121•

Page 39

Front Panel of a QFX3500 Device

QFX3500-48S4Q

C O N

OK/

g050012

Management board

Fan tray 0 Fan tray 1

AC power supply 0

AC power supply 1

FX3500-48S4Q

Management board

Fan tray

Power supply

Mounting bracket

g050000

ESD point/ serial number ID label

The front panel of the QFX3500 device consists of the following components:

•

Management board

•

Chassis serial number label and ESD point

NOTE: The chassis serial number ID label is located on a sliding panel to

the right of the fan tray on a QFX3500 device (see Figure 6 on page 19). To use the sliding panel as an ESD point, pull thesliding panel partway out of the chassis, and connect a clip-style or tape-style ESD grounding strap to the panel.

•

Fan trays

•

Power supplies

Chapter 2: Chassis Components and Descriptions

Documentation

Figure 5 on page 19 and Figure 6 on page 19 show the front of a QFX3500 device.

Figure 5: QFX3500 Device Front Panel

Figure 6: QFX3500 Device Front

Field-Replaceable Units in a QFX3500 Device on page 18•

• Rear Panel of a QFX3500 Device on page 20

• USB Port Specifications for the QFX Series on page 69

• Management Board for a QFX3500 Device on page 24

• Chassis Status LEDs on a QFX3500 Device on page 23

• Cooling System and Airflow for a QFX3500 Device on page 29

• AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 35

Page 40

QFX3500 Device Hardware Documentation

• Prevention of Electrostatic Discharge Damage on page 198

• Installing and Removing QFX3500 Device Hardware Components on page 121

Rear Panel of a QFX3500 Device

The rear panel of the QFX3500 device consists of the following components:

•

Access ports—The QFX3500 device has 48 access ports (0 through 47) that support small form-factor pluggable plus (SFP+) and small form-factor pluggable (SFP) transceivers, as well as SFP+ direct attachcopper cables, also known as Twinax cables. See “Determining Interface Support for the QFX3500 Device” on page 59.

•

Up to 48 of the access ports can be used for SFP+ transceiversor SFP+ direct attach copper cables. You can use 10-Gigabit Ethernet SFP+ transceivers and SFP+ direct attach copper cables in any access port. You can use 2-Gbps, 4-Gbps, or 8-Gbps Fibre Channel SFP+ transceivers in ports 0 through 5 and ports 42 through 47.

NOTE: If you use Fibre Channel SFP+ transceivers in ports 0 through 5

or ports 42 through 47, you must configure the entire block of ports as Fibre Channel ports. For example, if you use a Fibre Channel SFP+ transceiver in any of the ports 0 through 5, then ports 0 through 5 must be configured as Fibre Channel ports. If you use a Fibre Channel SFP+ transceiver in any of the ports 42 through 47, then ports 42 through 47 must be configured as Fibre Channel ports. You then cannot use 10-Gigabit Ethernet SFP+ transceivers in these ports.

•

Up to 36 of the access ports can be used for SFP transceivers. Gigabit Ethernet SFP transceivers can be used in ports 6 through 41.

CAUTION: Do not place a copper transceiver in an access port directly

aboveor belowanother copper transceiver. Internal damageto the access ports and device can occur. Because of this limitation, a maximum of 18 coppertransceiverscan be installed in ports 6 through41. Werecommend using only the top row of access ports for copper transceivers.

•

Uplink ports—The QFX3500 device has four uplink ports (Q0 through Q3) that support up to four QSFP+ DAC breakout cables. See “Determining Interface Support for the

QFX3500 Device” on page 59. When the QFX3500 device is used as a Node device in

a QFabric system, these uplink ports are used to connect the QFX3500 Node devices to Interconnect devices.

NOTE: The QSFP+ uplink ports are not supported in Junos OSRelease 11.1.

The QSFP+ uplink ports are supported in Junos OS Release 11.2 and later.

•

Access port and uplink port LEDs

Page 41

10-Gigabit Ethernet or Fibre Channel ports

QSFP+ Uplink ports

10-Gigabit Ethernet or Fibre Channel ports

10-Gigabit Ethernet or 1-Gigabit Ethernet ports

Q0 Q1 Q2 Q3 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 470 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

g050013

0 1 2 3 4 5

42 43 44 45 46 47

0 1 2 3 4 5

g050019

Link/Activity

LED

Status

LED

Chapter 2: Chassis Components and Descriptions

Figure 7 on page 21 shows the rear panel of a QFX3500 device.

Figure 7: QFX3500 Device Rear Panel

Documentation

Field-Replaceable Units in a QFX3500 Device on page 18•

• Front Panel of a QFX3500 Device on page 19

• Access Port and Uplink Port LEDs on a QFX3500 Device on page 21

• Installing and Removing QFX3500 Device Hardware Components on page 121

Access Port and Uplink Port LEDs on a QFX3500 Device

Each access port and uplink port on a QFX3500 device has two LEDs. The two figures in this topic show the location of those LEDs:

•

Figure 8 on page 21 shows the location of the LEDs on the SFP+ access ports.

•

Figure 9 on page 22 shows the location of the LEDs on the QSFP+ uplink ports.

Figure 8: LEDs on the SFP+ Access Ports

Page 42

QSFP+ uplink port LEDs

Link/Activity

LED

Status

LED

Q0 Q1 Q2 Q3

g050018

QFX3500 Device Hardware Documentation

Figure 9: LEDs on the QSFP+ Uplink Ports

The LEDs labeled Link/ActivityLED in Figure 8 on page21 and Figure 9 on page 22 indicate link activity or faults. The LEDs labeled Status LED in Figure 8 on page 21 and

Figure 9 on page 22 indicate link status.

TIP: By default, all access ports are configured as Ethernet interfaces. If you

insert a Fibre Channel transceiver, the LEDs do not light until you configure the port as a Fibre Channel interface in Junos OS. Likewise, the LEDs do not light if you insert an Ethernet transceiver in a port configured as a Fibre Channel interface.

Table 5 on page 22 describes the SFP+ access port LEDs.

Table 5: Network Port LEDs on SFP+ Access Ports on a QFX3500 Device

DescriptionStateColorLED

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

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

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

OffUnlitStatus

Table 6 on page 23 describes the QSFP+ uplink port LEDs.

No transceiver is installed in the port, the port is configured for a different interface, or the transceiver is not supported.

An Ethernet transceiver is installed in the port.On steadilyGreen

A Fibre Channel transceiver is installed in the port.On steadilyAmber

Page 43

QFX3500-48S4Q

CO C1

g050005

Power

Status

Fan

Chapter 2: Chassis Components and Descriptions

Table 6: Uplink Port LEDs on QSFP+ Uplink Ports on a QFX3500 Device

DescriptionStateColorLED

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

NOTE: 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: 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: The LED is lit green when at least one of the four 10-Gigabit Ethernet

SFP+ breakout links is established.

No transceiver is installed in the port, or the transceiver is not supported.OffUnlitStatus

A transceiver is installed in the port.On steadilyGreen

Documentation

OffUnlitLink/Activity

On steadilyGreen

Blinking

Rear Panel of a QFX3500 Device on page 20•

• Installing a Transceiver in a QFX Series Device

• Connecting a Fiber-Optic Cable to a QFX Series Device

Chassis Status LEDs on a QFX3500 Device

The front panel of the QFX3500 device has three LEDs on the right side of the management board, next to the LCD panel (see Figure 10 on page 23).

Figure 10: Chassis Status LEDs on a QFX3500 Device

Table 7 on page 24 describes the chassis status LEDs on a QFX3500 device, 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.

Page 44

QFX3500 Device Hardware Documentation

Table 7: Chassis Status LEDs on a QFX3500 Device

DescriptionStateColorName

The device is powered on.On steadilyGreenPower

BlinkingAmber

Intermittent blinking

BlinkingAmber

A temperature or voltage error has been detected, and the device has shut down. Power off the QFX3500 device by setting the AC power source outlet to the OFF (O)position, or unplugging the AC power cords. Correctany site temperatureissues, and allow the device to cool down. Power on the QFX3500 device and monitor the power supply and fan LEDs to help determine where the error is occurring. If the amber Power LED begins blinking again, power off the QFX3500 device and contact customer support. See “Contacting Customer Support to Obtain a Return

Materials Authorization for a QFX Series Device or Component” on page 151.

Junos OS has been loaded on the device.On steadilyGreenStatus

The beacon feature has been enabled on the device using the request chassis

beacon command.

A software error has occurred. Power off the QFX3500 device by setting the AC power source outlet to the OFF (O) position, or unplugging the AC power cords. Poweron the QFX3500 deviceand monitor the managementboard LEDs toensure that Junos OS boots properly.

The fan modules on the management board are operating normally.On steadilyGreenFan

An error hasbeen detected in the fan modulesinstalled on the management board. Replace the management board as soon as possible. You must power off the QFX3500 device before replacing the management board. See “Removing a

Management Board from a QFX3500 Device” on page 130.

Documentation

Front Panel of a QFX3500 Device on page 19•

• Chassis Alarm Messages on a QFX3500 Device on page 156

Management Board for a QFX3500 Device

The management board for a QFX3500 device (see Figure 11 on page 25) is a field-replaceable unit (FRU) that you install on the front panel.

CAUTION: You must power off the QFX3500 device before replacing the

management board.

Figure 11 on page 25 shows the management board.

Page 45

g050021

Management ports

USB port

Console port

Fan modules

Chassis status LEDs

LCD display

QFX3500-48S4Q

Chapter 2: Chassis Components and Descriptions

Figure 11: Management Board for a QFX3500 Device

The management board contains the following components on the faceplate:

•

LCD panel—The LCD panel displays the device hostname and the number of active alarms.

TIP: Alternatively, you can use the show chassis lcd CLI command to view

what is currently displayed on the LCD panel.

•

Chassis status LEDs

•

USB port

•

Console (CON) port (RJ-45)

•

Management (C0 and C1) ports

There are two types of management boards:

•

RJ-45 management board—Provides two 1000BASE-T RJ-45 management ports.

•

If you are using the QFX3500 device as a Node device in a QFabric system, see Cable Specifications for Copper-Based Control Plane Connections for the QFabric System

for information about the required cables.

•

If you are using the QFX3500 deviceas a standalone switch,see “CableSpecifications

for Console and Management Connections for the QFX Series” on page 62 for

information about the required cables.

•

SFP management board—Provides two 1-Gbps small form-factor pluggable (SFP) management ports. See “Determining Interface Support for the QFX3500 Device” on

page 59 for information about the supported transceivers and required cables.

In addition to the fan trays, two fan modules on the management board provide airflow to cool the chassis. The management board provides FRU-side-to-port-side or port-side-to-FRU-side airflow depending on the device model you purchase.

Table 8 on page 26 lists the different management boards and their direction of airflow.

The management boardsare designed so that they can onlybe inserted into the QFX3500 model that supports the same airflow type.

Page 46

QFX3500 Device Hardware Documentation

NOTE: The front panel of the devicewhere the powersupplies, fan trays, and

management boards are located is the FRU side of the device.

Table 8: Airfow Direction in QFX3500 Management Boards

Direction of AirflowModelFRU

FRU-to-portQFX3500-MBRJ-45 management board

Port-to-FRUQFX3500-MB-RJ45-AFO

FRU-to-portQFX3500-MB-SFP-AFISFP management board

Port-to-FRUQFX3500-MB-SFP-AFO

Documentation

Chassis Status LEDs on a QFX3500 Device on page 23•

• USB Port Specifications for the QFX Series on page 69

• Connecting a QFX Series Device to a Management Console

• Connecting a QFX3500 Node Device to a Copper-Based QFX3000-G QFabric System

Control Plane Network

• Connecting a QFX3500 Device to a Network for Out-of-Band Management

• Cooling System and Airflow for a QFX3500 Device on page 29

Management Port LEDs on a QFX3500 Device

The management ports (labeled C0 and C1) on a QFX3500 device have two LEDs that indicate link speed and activity (see Figure 12 on page 27).

NOTE: Figure 12 on page 27 depicts the 1000BASE-T management ports.

The LEDs on the SFP management ports are identical.

Page 47

Figure 12: Management Port LEDs on a QFX3500 Device

FX3500-48S4Q

g050029

Link speed LED Activity LED

Table 9 on page 27 describes the management port LEDs.

Table 9: Management Port LEDs on a QFX3500 Device

Chapter 2: Chassis Components and Descriptions

Documentation

DescriptionStateColorLED

The port is not active.OffUnlitLink speed

1-Gbps link is established.On steadilyGreen

10/100-Mbps link is established.On steadilyAmber

There is no activity on the link.OffUnlitActivity

There is activity on the link.FlickeringGreen

• Front Panel of a QFX3500 Device on page 19

• Connecting a QFX3500 Device to a Network for Out-of-Band Management

Page 48

QFX3500 Device Hardware Documentation

Page 49

CHAPTER 3

g050011

Fan modules

EjectorLED

g050021

Management ports

USB port

Console port

Fan modules

Chassis status LEDs

LCD display

QFX3500-48S4Q

Cooling System and Airflow

•

Cooling System and Airflow for a QFX3500 Device on page 29

•

Fan Tray LED on a QFX3500 Device on page 33

Cooling System and Airflow for a QFX3500 Device

The cooling system in a QFX3500 device consists of two field-replaceable unit (FRU) fan trays with twofan modules each (see Figure 13 on page 29) and two fan modules on the management board FRU (see Figure 14 on page 29). In addition, the power supplies have internal fans to cool themselves.

Figure 13: Fan Tray for a QFX3500 Device

Figure 14: Management Board for a QFX3500 Device

Page 50

g050003

FRUs

Ports

QFX3500 Device Hardware Documentation

The QFX3500 device provides FRU-to-port or port-to-FRU airflow depending on the device model you purchase. Table 10 on page 30 lists the different QFX3500 device models and their direction of airflow.

NOTE: In QFX Series device model names, AFI, or airflow in, describes

FRU-to-port airflow. AFO, or airflow out, describes port-to-FRU airflow.

NOTE: The front panel of the devicewhere the powersupplies, fan trays, and

management boards are located is the FRU side of the device.

Table 10: Airflow Direction in QFX3500 Device Models

Direction of AirflowModel

FRU-to-portQFX3500-48S4Q-ACR

FRU-to-portQFX3500-48S4Q-AFI

Port-to-FRUQFX3500-48S4Q-AFO

In the QFX3500 device models that have FRU-to-port airflow, the air intake to cool the chassis is located on the front panel of the chassis, where the FRUs are installed. Air is pulled into the chassis and pushed away from the fan trays and management board. Hot air exhausts from the rear of the chassis, where the ports are located. See

Figure 15 on page 30.

Figure 15: FRU-to-Port Airflow Through the QFX3500 Chassis

In the QFX3500 device models that have port-to-FRU airflow, the air intake to cool the chassis is located on the rear panel of the chassis, the side with access and uplink ports.

Page 51

g050031

FRUs

Ports

Chapter 3: Cooling System and Airflow

Air is pulled into the chassis and pulled through the fan trays and management boards. Hot air exhausts from the front of the chassis, where the FRUs are installed. See

Figure 16 on page 31.

Figure 16: Port-to-FRU Airflow Through the QFX3500 Chassis

Each airflow type requires specific fan trays, management boards, and power supplies, that have fan modules oriented in the proper direction. The fan trays and management boards are designed so that they can only be inserted into the QFX3500 device model that supports the same airflow type. The power supplies have labels and arrows on the handles that depict the direction of airflow (see Figure 17 on page 31). The label AFI denotes FRU-to-port airflow, AFO denotes port-to-FRU airflow.

CAUTION: Verify that the direction of the arrow on the power supply handle

matches the direction of airflow in the chassis. See Table 10 on page 30 to determine your model’s airflow direction.

Figure 17: Label Identifying Airflow Direction on Power Supply Handle

Page 52

QFX3500 Device Hardware Documentation

Table 11 on page 32 lists the QFX3500 device FRUs and their direction of airflow.

Table 11: Airflow Direction in QFX3500 Device FRUs

Direction of AirflowModelFRU

FRU-to-portQFX3500-MBRJ-45 management board

Port-to-FRUQFX3500-MB-RJ45-AFO

FRU-to-portQFX3500-MB-SFP-AFISFP management board

Port-to-FRUQFX3500-MB-SFP-AFO

FRU-to-portQFX3500-FANAIFan tray

Port-to-FRUQFX3500-FAN-AFO

AC power supply

Documentation

•

JPSU-650W-AC-AFI

•

QFXC01-PWRACI-650A

FRU-to-port

Port-to-FRUJPSU-650W-AC-AFO

FRU-to-portJPSU-650W-DC-AFIDC power supply

Port-to-FRUJPSU-650W-DC-AFO

The chassis includes a fan speed-control system. Under normal operating conditions, fans operate at reduced speed to reduce noise and power consumption.

Temperature sensors in the chassis monitor the temperature within the chassis. The system raises an alarm if a fan fails or if the temperature inside the chassis rises above permitted levels. If the temperature inside the chassis rises above the threshold, the device shuts down automatically. You can see the status of fans and the temperature remotely through the CLI by issuing the operational mode command show chassis

environment.

You cannot replace a single fan module. If one or more fan modules fail, you must replace the entire fan tray or management board.

Field-Replaceable Units in a QFX3500 Device on page 18•

• Installing a Fan Tray in a QFX3500 Device on page 122

• Removing a Fan Tray from a QFX3500 Device on page 123

• Installing a Management Board in a QFX3500 Device on page 128

• Removing a Management Board from a QFX3500 Device on page 130

Page 53

Fan Tray LED on a QFX3500 Device

g050011

Fan modules

EjectorLED

Figure 18 on page 33 shows the location of the LED on the fan tray.

Figure 18: Fan Tray LED in a QFX3500 Device

Chapter 3: Cooling System and Airflow

Table 12 on page 33 describes the function of the fan tray LED.

Table 12: Fan Tray LED in a QFX3500 Device

BlinkingAmber

Documentation

• Cooling System and Airflow for a QFX3500 Device on page 29

• Installing a Fan Tray in a QFX3500 Device on page 122

• Removing a Fan Tray from a QFX3500 Device on page 123

DescriptionStateColorName

The fan tray is operating normally.On steadilyGreenFan

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

Page 54

QFX3500 Device Hardware Documentation

Page 55

CHAPTER 4

g050002

Handle

Ejector lever

AC appliance inlet

Cord retainer

Power Supplies

•

AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 35

•

DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 37

•

AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device on page 39

•

DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device on page 40

AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device

The power supplies in QFX3500, QFX3600, and QFX3600-I devices (see

Figure 19 on page 35) are hot-removable and hot-insertable field-replaceable units

(FRUs) that you can install on the front panel without powering off the device or disrupting the switching function.

The AC power supply in QFX3500, QFX3600, and QFX3600-I devices is 650 W.

Figure 19: AC Power Supplyin QFX3500, QFX3600, or QFX3600-I Devices

Thepower supply providesFRU-to-portor port-to-FRUairflowdepending on the product SKU you purchase. On legacy switches, or switches with an LCD, this airflow is called back-to-front and front-to-back. The power supplies either have labels on the handles that indicate the direction of the airflow or they have color-coded handles with a fan icon. See Figure 21 on page 36 for an example of the power supply with the fan icon. A power supply with a blue handle denotes FRU-to-port airflow; a power supply with a gold-colored handle denotes port-to-FRU airflow.

Page 56

QFX3500 Device Hardware Documentation

Figure 20: An Arrow Icon and AFI Label Identifying Airflow Direction on Power Supply Handle

Figure21: A Fan Icon Identifying AirflowDirection on PowerSupply Handle

CAUTION: Verifythat the direction of the airflow on the power supply handle

matchesthe directionof airflowin the chassis.Ensure thateach powersupply 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, and the status (OK/!) LED blinks amber.

Table 13 on page 36 shows the different power supplies and their direction of airflow.

Table 13: Airfow Direction in QFX3500, QFX3600, or QFX3600-I AC Power Supplies

Direction of AirflowModel

•

JPSU-650W-AC-AFI

•

QFXC01-PWRACI-650A

Documentation

To avoid electrical injury, carefully follow instructions in “Connecting AC Power to a

QFX3500, QFX3600, or QFX3600-I Device” on page 85.

AC Power Cord Specifications for a QFX Series Device on page 56•

• AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device on page 39

FRU-to-port

Port-to-FRUJPSU-650W-AC-AFO

Page 57

• Front Panel of a QFX3500 Device on page 19

• Field-Replaceable Units in a QFX3500 Device on page 18

• AC Power Specifications for a QFX3500 Device on page 55

• Prevention of Electrostatic Discharge Damage on page 198

DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device

The power supplies in a QFX3500, QFX3600, and QFX3600-I device (see

Figure 22 on page 37 and Figure 23 on page 38) are hot-removable and hot-insertable

field-replaceable units (FRUs) that you can install in the device without powering off the device or disrupting the switching function.

The DC power supply in QFX3500, QFX3600, and QFX3600-I devices is 650 W.

NOTE: The V+ terminals are referredto as +RTN and V–terminals are referred

to as –48 V in “DC Power Wiring Sequence Warning” on page 207 and “DC

Power Electrical Safety Guidelines for Switches” on page 202.

Chapter 4: Power Supplies

Figure 22: DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device

3—1— Ejector leverHandle

2—Terminal block

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QFX3500 Device Hardware Documentation

Figure 23: DC Power Supply Faceplate

5—1— ESD grounding pointShunt positive input terminals

6—2— Fault LEDShunt negative input terminals

7—3— Output LEDTerminal block

8—4— Input LEDEjector lever

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.

The power supply provides FRU-to-port or port-to-FRU airflow depending on the SKU you purchase. The power supplies have labels and arrows on the handles that depict the directionof airflow(see Figure 24 on page39). The label AFI denotes FRU-to-portairflow.

AFO denotes port-to FRU airflow.

Page 59

Chapter 4: Power Supplies

Figure 24: Label Identifying Airflow Direction on Power Supply Handle

1— Airflow in indicator

CAUTION: Verify that the airflow direction of the power supply handle

Table 14 on page 39 shows the different power supplies and their direction of airflow.

Table 14: Airflow Direction in QFX3500, QFX3600, and QFX3600-I Device DC Power Supplies

Direction of AirflowModel

FRU-to-portJPSU-650W-DC-AFI

Port-to-FRUJPSU-650W-DC-AFO

To avoid electrical injury, carefully follow instructions in “Connecting DC Power to a

QFX3500, QFX3600, or QFX3600-I Device” on page 88.

Documentation

DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device on page 40•

• DC Power Specifications for a QFX3500 Device on page 57

• DC Power Specifications for a QFX3600 or QFX3600-I Device

AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device

Figure 25 on page 40 shows the location of the LEDs on the power supply.

Page 60

g050008

AC OK

DC OK

Fault

QFX3500 Device Hardware Documentation

Figure 25: AC PowerSupplyLEDs on a QFX3500,QFX3600, or QFX3600-I Device

Table 15 on page 40 describes the LEDs on the AC power supplies.

Table 15: AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device

DescriptionStateColorLED

Documentation

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.

AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 35•

• Connecting AC Power to a QFX3500, QFX3600, or QFX3600-I Device on page 85

DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device

Figure 26 on page 41 shows the location of the LEDs on the DC power supply.

Page 61

g050211

678

Chapter 4: Power Supplies

Figure 26: DC Power Supply Faceplate on a QFX3500, QFX3600, or QFX3600-I Device

5—1— ESD grounding pointShunt positive input terminals

6—2— Fault LEDShunt negative input terminals

7—3— Output LEDTerminal block

8—4— Input LEDEjector lever

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 16 on page 41 describes the LEDs on the DC power supplies.

Table 16: DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device

DescriptionStateColorName

OffUnlitInput

OffUnlitOutput

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

Page 62

QFX3500 Device Hardware Documentation

Table 16: DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device (continued)

DescriptionStateColorName

Documentation

On steadilyAmberFault

• DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 37

• Connecting DC Power to a QFX3500, QFX3600, or QFX3600-I Device on page 88

Page 63

PART 2

Site Planning, Preparation, and Specifications

•

Preparation Overview on page 45

•

Power Specifications and Requirements on page 55

•

Transceiver and Cable Specifications on page 59

•

Pinout Specifications on page 69

Page 64

QFX3500 Device Hardware Documentation

Page 65

CHAPTER 5

Preparation Overview

•

Site Preparation Checklist for a QFX3500 Device on page 45

•

Environmental Requirements and Specifications for a QFX3500 Device on page 46

•

General Site Guidelines on page 47

•

Site Electrical Wiring Guidelines on page 48

•

Planning a Virtual Chassis Fabric Deployment on page 49

•

Rack Requirements for a QFX3500 Device on page 51

•

Cabinet Requirements for a QFX3500 Device on page 52

•

Clearance Requirements for Airflow and Hardware Maintenance for a QFX3500 Device on page 53

Site Preparation Checklist for a QFX3500 Device

The checklist in Table 17 on page 45 summarizes the tasks you need to perform when preparing a site for QFX3500 device installation.

Table 17: Site Preparation Checklist

Environment

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

Power

Measure distance between external power sources and device installation site.

Calculate the power consumption and requirements.

Rack or Cabinet

DatePerformed ByFor More InformationItem or Task

“Environmental Requirements and Specifications for a QFX3500 Device” on page 46

“AC Power Specifications for a QFX3500 Device” on page 55

Page 66

QFX3500 Device Hardware Documentation

Table 17: Site Preparation Checklist (continued)

DatePerformed ByFor More InformationItem or Task

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

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.

•

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

Plan the cable routing and management.

“Rack Requirements for a QFX3500 Device” on page 51

“Cabinet Requirementsfor a QFX3500 Device” on page 52

“Clearance Requirements for Airflow and Hardware Maintenance for a QFX3500 Device” on page 53

“Determining Interface Support for the QFX3500 Device” on page 59

Determining Transceiver Support for QFabric Systems

“Cable Specifications for Console and Management Connections for the QFX Series” on page 62

Documentation

General Safety Guidelines and Warnings on page 169•

• General Site Guidelines on page 47

• Installing and Connecting a QFX3500 Device on page 75

• Mounting a QFX3500 Device in a Rack or Cabinet on page 77

Environmental Requirements and Specifications for a QFX3500 Device

The device must be installed in a rack or cabinet 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 device cooling system.

•

Maintain ambient airflow for normal device operation. If the airflow is blocked or restricted, or if the intake air is too warm, the device might overheat, leading to the device temperature monitor shutting down the device to protect the hardware components.

Page 67

Table 18 on page 47 provides the required environmental conditions for normal device

operation.

Table 18: QFX3500 Device Environmental Tolerances

ToleranceDescription

No performance degradation to 10,000 feet (3048 meters)Altitude

Normal operation ensured in relative humidity range of 5% through 85%, noncondensingRelative humidity

•

Temperature

Normal operation ensured in temperature range of 32° F through 104° F (0° C through 40° C)

•

Short-term operation ensured in temperature range of 23° F through 131° F (–5° C through 55° C)

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.

•

Nonoperatingstoragetemperature in shipping container: –40° F through158° F (–40° C through 70° C)

Chapter 5: Preparation Overview

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

Documentation

Clearance Requirements for Airflow and Hardware Maintenance for a QFX3500 Device

•

on page 53

• Installing and Connecting a QFX3500 Device on page 75

General Site Guidelines

Efficient device operation requires proper site planning and maintenance and proper layout of the equipment, rack or cabinet (if used), 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.

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.

•

Followprescribed airflow guidelines to ensure that the cooling systemfunctions properly and that exhaust from other equipment does not blow into the intake vents of the device.

Page 68

QFX3500 Device Hardware Documentation

•

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.

Prevention of Electrostatic Discharge Damage on page 198•

Documentation

Site Electrical Wiring Guidelines

Table 19 on page 48 describes the factorsyou must consider while planning the electrical

wiring at your site.

WARNING: It is particularly important to provide a properly grounded and

shielded environment and to use electrical surge-suppression devices.

Table 19: Site Electrical Wiring Guidelines

GuidelinesSite Wiring Factor

Signaling limitations

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.

Radio frequency interference

Electromagnetic compatibility

Documentation

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.

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

General Safety Guidelines and Warnings on page 169•

• General Electrical Safety Guidelines and Warnings on page 197

• Prevention of Electrostatic Discharge Damage on page 198

Page 69

Planning a Virtual Chassis Fabric Deployment

A Virtual Chassis Fabric (VCF) architecture supports up to 20 interconnected devices that are managed as a logical single device. Supported platforms vary depending on the QFX Series switch chosen for the spine. See Understanding Virtual Chassis Fabric Components and Virtual Chassis Fabric Hardware Overview for supported configurations. Although the architecture has a powerful auto-provisioning option, which allows you to plug and play the devices, careful planning of the deployment can avoid unexpected results.

For example, if you perform any configuration level commands on one of the devices (including assigning IP addressesor host names) you no longercan use auto-provisioning.

Use the following checklist to plan your deployment:

Table 20: Deployment Checklist

Chapter 5: Preparation Overview

DatePerformed ByFor More InformationItem or Task

Components

Determine the number of devices in the VCF and the role of each device.

NOTE: A VCF 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.

Calculatethe power consumption and requirements.

Understanding Virtual Chassis Fabric Components

Understanding Virtual Chassis Fabric Configuration

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” on page 55

Rack or Cabinet

AC Power Supply Specifications for EX4300 Switches

Page 70

QFX3500 Device Hardware Documentation

Table 20: 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” on page 51

“Cabinet Requirementsfor a QFX3500 Device” on page 52

Rack Requirements for EX4300 Switches

Cabinet Requirements for EX4300 Switches

QFX5110 Clearance Requirements for Airflow and Hardware Maintenance

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

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.

“Clearance Requirements for Airflow and HardwareMaintenancefor a QFX3500 Device” on page 53

Clearance Requirements for Airflow and Hardware Maintenance for EX4300 Switches

“Cable Specifications for QSFP+ and QSFP28 Transceivers” on page 60

“Cable Specifications for Console and Management Connections for the QFX Series” on page 62

Page 71

Chapter 5: Preparation Overview

Documentation

QFX5110 Site Preparation Checklist•

• Site Preparation Checklist for a QFX5100 Device

• Site Preparation Checklist for a QFX3600 or QFX3600-I Device

• Site Preparation Checklist for a QFX3500 Device on page 45

• Site Preparation Checklist for EX4300 Switches

Rack Requirements for a QFX3500 Device

A QFX3500 device is designed to be installed on four-post racks.

Rack requirements consist of:

•

Rack type

•

Mounting bracket hole spacing

•

Rack size and strength

•

Rack connection to the building structure

Table 21 on page 51 provides the rack requirements and specifications for the QFX3500

device.

Table 21: Rack Requirements for the QFX3500 Device

Rack type

Mounting bracket hole spacing

Rack size and strength

Rack connection to building structure

GuidelinesRack Requirement

Use a four-post rack. You can mount the device on 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 AssociatedEquipment (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 device can be mounted in any rack that provides holes spaced at that distance.

•

Ensure that the rack complies with the standards for a 19-in. rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics

Industry Association.

•

Ensurethat the rackrailsare spaced widely enough to accommodatethedevice chassis’ external dimensions. The outeredges of the front-mounting bracketsextend the width to 19 in. (48.26 cm).

•

The front and rear rack rails must be spaced between 28 in. (71.1 cm) and 36 in. (91.4 cm) front-to-back.

•

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

•

Ensure that the spacing of rails and adjacent racksallowsfor proper clearancearound the device and rack.

•

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.

Page 72

QFX3500 Device Hardware Documentation

Documentation

Chassis Physical Specifications for a QFX3500 Chassis on page 17•

• Rack-Mounting and Cabinet-Mounting Warnings on page 180

• ClearanceRequirements for Airflowand HardwareMaintenance for a QFX3500 Device

on page 53

• Mounting a QFX3500 Device in a Rack or Cabinet on page 77

Cabinet Requirements for a QFX3500 Device

You can mount the QFX3500 device in a cabinet that contains a four-post 19-in. 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 22 on page 52 provides the cabinet requirements and specifications for the

QFX3500 device.

Table 22: Cabinet Requirements for the QFX3500 Device

Cabinet size and clearance

Cabinet airflow requirements

Documentation

GuidelinesCabinet Requirement

The minimum cabinet size for accommodating a QFX3500 device is 36 in. (91.4 cm) deep. Large cabinets improve airflow and reduce the chance of overheating.

When you mount the device 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 device (or devices).

•

Ensure that the cabinet allows the chassis hot exhaust air to exit the cabinet without recirculating into the device. 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 device fans exhaust hot air through the rear of the chassis. Install the device in the cabinet in a way that maximizes the open space on the fan tray 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 device and cabinet.

Clearance Requirements for Airflow and Hardware Maintenance for a QFX3500 Device

•

on page 53

• Rack Requirements for a QFX3500 Device on page 51

• Mounting a QFX3500 Device in a Rack or Cabinet on page 77

Page 73

29.2 in

(74.17 cm)

g050006

Clearance required

for maintenance

24 in. (60.9 cm)

Clearance required

for maintenance

24 in. (60.9 cm)

17.4 in.

(44.2 cm)

19 in.

(48.26 cm)

Front Rear

Chapter 5: Preparation Overview

Clearance Requirements for Airflowand Hardware Maintenance for a QFX3500 Device

When planning the site for installing a QFX3500 device, you must allow sufficient clearance around the installed chassis (see Figure 27 on page 53).

Figure 27: ClearanceRequirements for Airflowand Hardware Maintenance for a QFX3500 Device

Documentation

•

For the cooling system to function properly, the airflow around the chassis must be unrestricted. See “Cooling System and Airflow for a QFX3500 Device” on page 29 for more information about the airflow through the chassis.

•

If you are mounting a QFX3500 device 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 QFX3500 device. For servicepersonnel toremove and install hardware components,you must leaveadequate space at the front and back of the device. 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.

• Rack Requirements for a QFX3500 Device on page 51

• Cabinet Requirements for a QFX3500 Device on page 52

• General Site Guidelines on page 47

• Rack-Mounting and Cabinet-Mounting Warnings on page 180

Page 74

QFX3500 Device Hardware Documentation

Page 75

CHAPTER 6

Power Specifications and Requirements

•

AC Power Specifications for a QFX3500 Device on page 55

•

AC Power Cord Specifications for a QFX Series Device on page 56

•

DC Power Specifications for a QFX3500 Device on page 57

•

Grounding Cable and Lug Specifications for a QFX3500 Device on page 57

AC Power Specifications for a QFX3500 Device

Table 23 on page 55 describes the AC power specifications for a QFX3500 device.

Table 23: AC Power Specifications for a QFX3500 Device

SpecificationItem

AC input voltage

AC input current rating

Documentation

Operating range:

•

100–127 VAC

•

200–240 VAC

50–60 HzAC input line frequency

•

7.8 A at 100–127 VAC

•

3.8 A at 200–240 VAC

230 WTypical power consumption

365 WMaximum power consumption

AC Power Cord Specifications for a QFX Series Device on page 56•

• AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 35

• General Safety Guidelines and Warnings on page 169

• General Electrical Safety Guidelines and Warnings on page 197

Page 76

g021274

QFX3500 Device Hardware Documentation

AC Power Cord Specifications for a QFX Series Device

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 at the male 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

(approximately4.5 meters)in length,to complywith NationalElectricalCode (NEC) Sections400-8 (NFPA75, 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 24 on page 56 lists AC power cord specifications provided for each country or

region.

Table 24: AC Power Cord Specifications

Switzerland, and United Kingdom)

250 VAC, 10 A, 50 HzSwitzerland

GraphicJuniper Model NumberPlug StandardsElectrical SpecificationsCountry/Region

CG_CBL-C13-06-AUAS/NZ 3109-1996250 VAC, 10 A, 50 HzAustralia

CG_CBL-C13-06-CHGB 1002-1996250 VAC, 10 A, 50 HzChina

CG_CBL-C13-06-EUCEE (7) VII250 VAC, 10 A, 50 HzEurope (except Italy,

CG_CBL-C13-06-ITCEI 23-16/VII250 VAC, 10 A, 50 HzItaly

CG_CBL-C13-06-JPJIS C8303125 VAC, 12 A, 50 Hz or 60 Hz

CG_CBL-C13-06-USCAN/CSA No. 49-92125 VAC, 13 A, 60 HzNorth America

CG_CBL-C13-06-KRKSC 8305; K60884-1250 VAC, 10 A, 60 HzSouth Korea

CG_CBL-C13-06-SZSEV 1011 SEV 1991; EN

60320 C13

CG_CBL-C13-06--UKBS 1363/A250 VAC, 10 A, 50 HzUnited Kingdom

AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 35•

Documentation

Page 77

• General Safety Guidelines and Warnings on page 169

• General Electrical Safety Guidelines and Warnings on page 197

• Prevention of Electrostatic Discharge Damage on page 198

• AC Power Supply for a QFX5100 Device

• QFX10002 AC Power Specifications

• QFX5200 AC Power Specifications

• QFX5110 AC Power Specifications

DC Power Specifications for a QFX3500 Device

Table 25 on page 57 describes the DC power specifications for a QFX3500 device.

Table 25: DC Power Specifications for a QFX3500 Device

SpecificationsItem

Chapter 6: Power Specifications and Requirements

•

DC input voltage

Documentation

DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 37•

• DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device on page 40

Minimum operating voltage: –40 VDC

•

Nominal operating voltage: –48 VDC

•

Operating voltage range: –40 VDC through –72 VDC

7 A maximum at nominal operating voltage (–48 VDC)DC input current rating

250 WTypical power consumption

385 WMaximum power consumption

Grounding Cable and Lug Specifications for a QFX3500 Device

For installations that require a separate grounding conductor to the chassis, the device must be adequately grounded before power is connected to ensure proper operation and to meet safety and electromagnetic interference (EMI) requirements. To ground a QFX3500 device, connect a grounding cable to earth ground and then attach it to the chassis grounding points.

WARNING: The device is pluggable type A equipment installed in a

restricted-access location. It has a separate protective earthing terminal provided on the chassis in addition to the grounding pin of the power supply cord. This separate protective earthing terminal must be permanently connectedto earth ground for installationsthat require a separate grounding conductor to the chassis.

Page 78

QFX3500 Device Hardware Documentation

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

•

A protective earthing terminal bracket is provided in the accessory kit for connecting the device to earth ground. This L-shaped bracket attaches to a post on the QFX3500 device left front mounting bracket, providing a protective earthing terminal for the device. The grounding points are studs sizedfor M4 hex nuts. The grounding points are spaced at 0.625 in. (15.86 mm). M4 hex nuts with integrated washers are provided in the accessory kit.

•

The grounding lug required is a Panduit LCD10-10A-L or equivalent. This grounding lug is provided in the accessory kit. The grounding lug providedaccommodates14–10 AWG (2–5.3 mm²) stranded wire.

CAUTION: Before device installation begins, a licensed electrician must

attach a cable lug to the grounding cables that you supply. See “Connecting

Earth Ground to a QFX3500 Device” on page 84. A cable with an incorrectly

attached lug can damage the device.

Documentation

•

The grounding cable that you provide for a QFX3500 device must be 14 AWG(2 mm²), minimum 60° C wire, or as permitted by the local code.

• AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 35

• Connecting AC Power to a QFX3500, QFX3600, or QFX3600-I Device on page 85

Page 79

CHAPTER 7

Transceiver and Cable Specifications

•

Determining Interface Support for the QFX3500 Device on page 59

•

Cable Specifications for QSFP+ and QSFP28 Transceivers on page 60

•

Cable Specifications for Console and Management Connections for the QFX Series on page 62

•

Understanding QFX Series Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion on page 63

•

Calculating the Fiber-Optic Cable Power Budget for a QFX Series Device on page 65

•

Calculating the Fiber-Optic Cable Power Margin for a QFX Series Device on page 65

Determining Interface Support for the QFX3500 Device

The 48 small form-factor pluggable plus (SFP+) access ports in the QFX3500 device support SFP and SFP+ transceivers, as well as SFP+ direct-attach copper (DAC) cables.

The four quad small form-factor pluggable plus (QSFP+) uplink ports in the QFX3500 device support QSFP+ transceivers, as well as QSFP+ DAC and DAC breakout cables. When the QFX3500 device is operating as a standalone switch, each QSFP+ port can be configured to operateas 10-Gigabit Ethernet interfacesor a single 40-GigabitEthernet interface. By default, the uplink ports on a standalone switchare configuredas 10-Gigabit Ethernet interfaces.

NOTE: Ports Q1 through Q3 support four of the 10-Gigabit Ethernet interfaces.

Together, the three QSFP+ ports provide up to 12 10-Gigabit Ethernet interfaces. Port Q0 also supports 10-Gigabit Ethernet interfaces, but the number of interfaces supported depends on the release of JunosOS running on the switch. Some Junos OS releases support three 10-Gigabit Ethernet interfaces, others support four. See the topic on Channelizing Interface for your specific release.

Figure 28 on page 60shows the uplink ports and lists the interfacescreatedon each port

when they are configured as 10-Gigabit Ethernet interfaces.

Page 80

QSFP+ ports

Q0 Q1 Q2 Q3 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 470 1 2 3 4 5 6 7 8 9 34 35 36 37 38 39 40 41 42 43 44 45 46 47

Q0 Q1 Q2 Q3

g050023

xe- 0/1/0

xe-0/1/1*

through xe-0/1/3

xe-0/1/4

through xe-0/1/7

xe-0/1/8

through xe-0/1/11

xe-0/1/12

through xe-0/1/15

*Port availability is release dependent. See the topic on Channelizing Interfaces for your Junos Release.

QFX3500 Device Hardware Documentation

Figure 28: QSFP+ Uplink Port Locations

If your QFX3500 device has an SFP management board instead of the 1000BASE-T RJ-45 management board, you can use the SFP transceivers to connect the QFX3500 device to a management network, or the control plane and management network of a QFabric system. The 1000BASE-SX Gigabit Ethernet SFP module (QFX-SFP-1GE-SX) is supported in the SFP management ports in the following software releases:

Documentation

•

Junos OS 12.1X49-D1 or later for the QFX3500 device as a standalone switch

•

Junos OS 12.2X50-D10 or later for the QFX3500 Node device in a QFabric system

You can find information about the optical transceivers supported on your Juniper device by using the Hardware Compatibility Tool.In addition to transceiverand connection type, the optical and cable characteristics–where applicable–are documented for each transceiver. The HardwareCompatibilityTool 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 QFX3500 is located at

https://pathfinder.juniper.net/hct/product/#prd=QFX3500.

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

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

Front Panel of a QFX3500 Device on page 19•

Cable Specifications for QSFP+ and QSFP28 Transceivers

The 40-Gigabit Ethernet QSFP+ and 100-Gigabit Ethernet QSFP28 transceiversthat are used in QFX Series and EX4600 switches use 12-ribbon multimode fiber crossover cables with female MPO/UPC connectors. The fiber can be either OM3 or OM4. These cables are not sold by Juniper Networks.

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Chapter 7: Transceiver and Cable Specifications

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 properpolarity is maintained through the cable plant.

Table 26 on page 61 describes the signals on each fiber. Table 27 on page 61 shows the

pin-to-pin connections for proper polarity.

Table 26: 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

Rx1 (Receive)11

Rx0 (Receive)12

Table 27: QSFP+ MPO Fiber-Optic Crossover Cable Pinouts

PinPin

121

112

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QFX3500 Device Hardware Documentation

Table 27: QSFP+ MPO Fiber-Optic Crossover Cable Pinouts (continued)

PinPin

103

310

211

112

Documentation

Determining Interface Support for the QFX3500 Device on page 59•

• Determining Interface Support for the QFX3600 Device

• Determining Interface Support for the QFX5100 Device

• Determining Transceiver Support for the QFX5110

• Determining QFX5200 Optical Interface Support

• Determining QFX10000 Optical Transceiver and Cable Support

Cable Specifications for Console and Management Connections for the QFX Series

Table 28 on page 63 lists the specifications for the cables that connect the QFX Series

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.

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Chapter 7: Transceiver and Cable Specifications

Table 28: Cable Specifications for Console and Management Connections for the QFX Series

Porton QFX Series Device

Management port

Documentation

RS-232(EIA-232) serial cableConsole port

RJ-45 patch cable and RJ-45 to DB-9 adapter

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

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

(100 meters)

Console Port Connector Pinouts for the QFX Series•

• Management Port Connector Pinouts for the QFX Series

• Connecting a QFX Series Device to a Management Console

• Connecting a QFX3600 Device to a Network for Out-of-Band Management

• Connecting a QFX3500 Device to a Network for Out-of-Band Management

• Connecting a QFX3100 Director Device to a Network for Out-of-Band Management

• Connecting a QFX5100 Device to a Network for Out-of-Band Management

• Connecting a QFX5110 to a Network for Out-of-Band Management

• Connecting a QFX5200 to a Network for Out-of-Band Management

Device ReceptacleMaximum LengthCable SuppliedCable Specification

RJ-457 feet (2.13 meters)One 7-foot (2.13-meter) long

RJ-45328 feet

• Connecting a QFX5300 to a Network for Out-of-Band Management

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

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 on page 63

•

Attenuation and Dispersion in Fiber-Optic Cable on page 64

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.

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QFX3500 Device Hardware Documentation

Single-mode fiber is so small in diameter that rays of light reflect internally through one layeronly. Interfaces with single-mode optics use lasers as light sources. Lasers generate a single wavelength of light, which travelsin 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 correctlyprovided that modulatedlight reachingthe 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 ratesand 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.

Documentation

Calculating the Fiber-Optic Cable Power Budget for a QFX Series Device on page 65•

• Calculating the Fiber-Optic Cable Power Margin for a QFX Series Device on page 65

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Chapter 7: Transceiver and Cable Specifications

Calculating the Fiber-Optic Cable Power Budget for a QFX Series Device

Calculate the link's power budget when planning fiber-optic cable layout and distances to ensure that fiber-optic connections have sufficient power for correct operation. The powerbudget is the maximum amount of power the link 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 for the fiber-optic cable power budget (PB) for the link:

1. Determine values for the link's minimum transmitterpower(P

) and minimum receiver

sensitivity (PR). For example, here, (PT) and (PR) are measuredin decibels, and decibels are referenced to 1 milliwatt (dBm):

PT= –15 dBm

PR= –28 dBm

NOTE: See the specifications for your transmitter and receiver to find the

minimum transmitter power and minimum receiver sensitivity.

2. Calculate the power budget (P

) by subtracting (PR) from (PT):

–15 dBm – (–28 dBm) = 13 dBm

Documentation

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

•

on page 63

• Calculating the Fiber-Optic Cable Power Margin for a QFX Series Device on page 65

Calculating the Fiber-Optic Cable Power Margin for a QFX Series Device

Calculate the link's power margin when planning fiber-optic cable layout and distances to ensure that fiber-optic connections have sufficient signal power to overcome system losses and still satisfy the minimum input requirements of the receiver for the required performance level. The power margin (PM) is the amount of power available after attenuation or link loss (LL) has been subtracted from the power budget (PB).

When you calculate the power margin, 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 worst-case levels.A powermargin (PM) greater than zero indicatesthat the power budgetis sufficient to operate the receiver and that it does not exceed the maximum receiver input power. This means the link will work. A (PM) that is zero or negative indicates insufficient power to operate the receiver. See the specification for your receiver to find the maximum receiver input power.

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QFX3500 Device Hardware Documentation

Before you begin to calculate the power margin:

•

Calculate the power budget. See “Calculating the Fiber-Optic Cable Power Budget for

a QFX Series Device” on page 65.

To calculate the worst-case estimate for the power margin (PM) for the link:

1. Determine the maximum value for link loss (LL) by adding estimated values for

applicable link-loss factors; for example, use the sample values for various factors as provided in Table 29 on page 66 (here, the link is 2 km long and multimode, and the (PB) is 13 dBm).

Table 29: Estimated Values for Factors Causing Link Loss

Sample Link Loss (LL) Calculation ValuesEstimated Link Loss ValueLink-Loss Factor

0.5 dBmMultimode—0.5 dBmHigher-order mode losses

0 dBmSingle-mode—None

Modal and chromatic dispersion

(CRM)

bandwidth and distance is less than 500 MHz/km

0.5 dBmConnector

0.5 dBmSplice

Multimode—1 dBm/kmFiber attenuation

Single-mode—0.5 dBm/km

NOTE: For information about the actual amount of signal loss caused by

equipment and other factors, see your vendor documentation for that equipment.

0 dBmMultimode—None, if product of

0 dBmSingle-mode—None

This example assumes five connectors. Loss for five connectors: 5 (0.5 dBm) = 2.5 dBm.

This example assumes two splices. Loss for two splices: 2 (0.5 dBm) = 1 dBm.

This example assumes the link is 2 km long. Fiber attenuation for 2 km: 2 km (1 dBm/km) = 2 dBm.

This example assumes the link is 2 km long. Fiber attenuation for 2 km: 2 km (0.5 dBm/km) = 1 dBm.

1 dBm1 dBmClock Recovery Module

2. Calculate the (P

PB– LL = P

) by subtracting (LL) from (PB):

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Chapter 7: Transceiver and Cable Specifications

13 dBm – 0.5 dBm [HOL] – 5 (0.5 dBm) – 2 (0.5 dBm) – 2 km (1.0 dBm/km) – 1 dB [CRM] = P

13 dBm – 0.5 dBm – 2.5 dBm – 1 dBm – 2 dBm – 1 dBm = P

PM= 6 dBm

The calculatedpower margin is greaterthan zero,indicating that the link has sufficient power for transmission. Also, the power margin value does not exceed the maximum receiverinput power. Refer to the specifications for your receiver to find the maximum receiver input power.

Documentation

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

on page 63

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QFX3500 Device Hardware Documentation

Page 89

CHAPTER 8

Pinout Specifications

•

USB Port Specifications for the QFX Series on page 69

•

Console Port Connector Pinout Information on page 70

•

RJ-45 Management Port Connector Pinout Information on page 71

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 TechnicalAssistanceCenter (JTAC) can provideonly limited support for issuesrelatedtounsupported hardware.Westrongly 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.

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QFX3500 Device Hardware Documentation

NOTE: USB flash drives used with the QFX Series device must support

USB 2.0 or later.

Documentation

Creating an Emergency Boot Device on page 161•

• Performing a Recovery Installation Using an Emergency Boot Device

Console Port Connector Pinout Information

The console port on a Juniper Networks device 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 30 on page 70 provides the pinout information for the RJ-45 console connector.

NOTE: If your laptop or PC does not have a DB-9 male connectorpin and you

want to connect your laptop or PC directly to a device, use a combination of the RJ-45 to DB-9 female adapter and a USB to DB-9 male adapter. You must provide the USB to DB-9 male adapter.

Table 30: Console Port Connector Pinout Information

DescriptionSignalPin

Request to sendRTS Output1

Documentation

Data terminal readyDTR Output2

Transmit dataTxD Output3

Signal groundSignal Ground4

Signal groundSignal Ground5

Receive dataRxD Input6

Data carrier detectCD Input7

Clear to sendCTS Input8

Connectinga Deviceto a Management Consoleby Using an RJ-45 Connector on page 94•

• Configuring the Console Port Type (CLI Procedure)

Page 91

RJ-45 Management Port Connector Pinout Information

Table 31 on page 71 provides the pinout information for the RJ-45 connector for the

management port on Juniper Networks devices.

Table 31: 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

Chapter 8: Pinout Specifications

Documentation

Transmit/receive data pair 2TRP2-6

Transmit/receive data pair 4TRP4+7

Transmit/receive data pair 4TRP4-8

• Connecting a Device to a Network for Out-of-Band Management on page 93

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QFX3500 Device Hardware Documentation

Page 93

PART 3

Initial Installation and Configuration

•

Unpacking and Mounting the Device on page 75

•

Connecting the QFX3500 Device to Power on page 83

•

Connecting the Device to the Network on page 93

•

Performing Initial Configuration on page 105

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QFX3500 Device Hardware Documentation

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CHAPTER 9

Unpacking and Mounting the Device

•

Installing and Connecting a QFX3500 Device on page 75

•

Unpacking a QFX3500 Device on page 76

•

Mounting a QFX3500 Device in a Rack or Cabinet on page 77

Installing and Connecting a QFX3500 Device

To install and connect a QFX3500 device:

1. Follow the instructions in “Unpacking a QFX3500 Device” on page 76.

2. Mount the device by following the instructions in “Mounting a QFX3500 Device in a

Rack or Cabinet” on page 77.

3. Follow the instructions in “ConnectingEarth Ground to a QFX3500 Device” on page 84.

Documentation

4. Follow the instructions in “Connecting AC Power to a QFX3500, QFX3600, or

QFX3600-I Device” on page 85.

5. Depending on how you will be using the QFX3500 device, do one of the following:

•

If you are using the QFX3500 device as a standalone switch, followthe instructions in “Configuring a QFX3500 Device as a Standalone Switch” on page 105.

•

If you are using the QFX3500 device as a Node device in a QFX3000-G QFabric system,see QFX3000-G QFabric SystemInstallationOverview for information about the steps to install and configure your QFX3000-G QFabric system.

•

If you are using the QFX3500 device as a Node device in a QFX3000-M QFabric system,see QFX3000-M QFabric System Installation Overview for information about the steps to install and configure your QFX3000-M QFabric system.

Rack Requirements for a QFX3500 Device on page 51•

• Cabinet Requirements for a QFX3500 Device on page 52

• ClearanceRequirements for Airflowand HardwareMaintenance for a QFX3500 Device

on page 53

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QFX3500 Device Hardware Documentation

Unpacking a QFX3500 Device

The QFX3500 device chassis is a rigid sheet-metal structure that houses the hardware components. A QFX3500 device is shipped in a cardboard carton, secured with foam packing material.The carton also contains an accessory box and quick startinstructions.

CAUTION: QFX3500 devices are maximally protected inside the shipping

carton. Do not unpack the device until you are ready to begin installation.

To unpack a QFX3500 device:

1. Move the shipping carton to a staging area as close to the installation site as possible,

but where you have enough room to remove the system components.

2. Position the carton so that the arrows are pointing up.

3. Open the top flaps on the shipping carton.

4. Remove the accessory box and verify the contents against the inventory included in

the box. Table 32 on page 76 lists the inventory of components supplied with a QFX3500 device.

5. Pull out the packing material holding the device in place.

6. Verify the chassis components received:

•

Management board

•

Two fan trays

•

One or two power supplies, depending on your order. If only one power supply is installed, a blank panel should be installed on the second power supply slot.

7. Save the shipping carton and packing materials in case you need to move or ship the

device later.

Table 32: Inventory of Components Supplied with a QFX3500 Device

QuantityComponent

1Chassis with management board, two fan trays, and one or two power supplies

2Rear installation blades

1RJ-45 cable and RJ-45 to DB-9 adapter

48SFP/SFP+ port dust covers

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Chapter 9: Unpacking and Mounting the Device

Table 32: Inventory of Components Supplied with a QFX3500 Device (continued)

QuantityComponent

4QSFP+ port dust covers

1Electrostatic discharge (ESD) grounding strap

Documentation

Mounting a QFX3500 Device in a Rack or Cabinet on page 77•

• Installing and Connecting a QFX3500 Device on page 75

Mounting a QFX3500 Device in a Rack or Cabinet

You can mount a QFX3500 device on four posts in a 19-in. rack or cabinet by using the mounting kits provided with the device. Choose one of the following two mounting kits provided for the different QFX3500 chassis configurations.

•

If your installation kit has two rails and your QFX3500 has mounting holes integrated as part of the chassis, use “Two Mounting Rails Procedure” on page 78. This configuration aligns the management end of the device flush with the rack. The adjustable rails allow for installation into racks having different depths.

•

If your installation kit has four rails and the QFX3500 does not have mounting holes as part of the chassis faceplate, use “Four Mounting Rails Procedure” on page 80. This configuration allows either end of the device to be mounted flush with the rack and still be adjustable for racks with different depths.

(The remainder of this topic uses “rack” to mean “rack or cabinet.”) The front and rear rack rails must be spaced between 28 in. (71.1 cm) and 36 in. (91.4 cm) front to back.

This topic describes:

•

Before You Begin Rack Installation on page 77

•

Two Mounting Rails Procedure on page 78

•

Four Mounting Rails Procedure on page 80

Before You Begin Rack Installation

Before you begin mounting a QFX3500 device in the rack or cabinet:

•

If replacing an existing QFX3500, remove previous rack-mount hardware. The mounting bracket and mounting blade in this procedure is not compatible with other Juniper mounting kits.

•

Ensure that you understand how to prevent electrostatic discharge (ESD) damage. See “Prevention of Electrostatic Discharge Damage” on page 198.

•

Verify that the site meets the requirements described in “Site Preparation Checklist

for a QFX3500 Device” on page 45.

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QFX3500 Device Hardware Documentation

•

Place the rack in its permanent location, allowing adequate clearance for airflow and maintenance, and secure it to the building structure.

•

Read “General Site Guidelines” on page 47, with particular attention to “Chassis Lifting

Guidelines for a QFX3500 Device” on page 178.

•

Remove the device from the shipping carton (see “Unpacking a QFX3500 Device” on

page 76).

Ensure that you have the following parts and tools available to mount the device on four posts in a rack:

•

ESD grounding strap (provided).

•

One pair of rear installation blades. These installation blades support the rear of the chassis and must be installed (provided).

•

Eight screws to secure the chassis and rear installation blades to the rack (not provided).

•

Appropriate screwdriver for the mounting screws (not provided).

Two Mounting Rails Procedure

To mount the device on four posts in a rack using a two-rail kit:

1. Attach the ESD grounding strap to your bare wrist and to a site ESD point.

2. With two mounting screws—and cage nuts and washers if your rack requires

them—attach one of the rear installation blades to the rear of the rack at the point where you want to mount the device. Tighten the screws. The blade helps support the rear of the chassis. You install the second rear installation blade after securing both front mounting brackets. See Figure 29 on page 79.

WARNING: The QFX3500 device must be supported at all four corners.

Mounting the chassis using only the front brackets will damage the chassis and can result in serious bodily injury.

CAUTION: If you are installing the QFX3500 device above 60 in. (152.4 cm)

from the floor, you must remove the power supplies, fan trays, and management board before attempting to install the device, or ask someone to assist you during the installation.

CAUTION: If you are mounting multiple devices on a rack, mount the device

in the lowest position of the rack first and proceed to mount the rest of the devices from bottom to top.

Page 99

Installation blade

g050004

g050022

Installation blade

Chapter 9: Unpacking and Mounting the Device

Figure 29: Installing an Installation Blade in a Rack

3. Grasp both sides of the device, lift it, and position it in the rack so that the blade

receptacle at the rear of the chassis catches and slides onto the installation blade. See Figure 30 on page 79.

TIP: If someone is assisting you, have one person stand at the rear of the

rack where the installationblade is installed,to help guide the device onto the installation blade.

Figure 30: Mounting the QFX3500 Device on Four Posts in a Rack Using a Two-Rail Kit

4. Align the holes in the front brackets on the chassis with the holes in the rack. Ensure

that the chassis is level.

5. With four mounting screws—and cage nuts and washers if your rack requires

them—secure the front of the device to the rack. Insert the first screw on the opposite corner from the rear installation blade you installed. Tighten the screws.

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QFX3500 Device Hardware Documentation

6. Ensure that the device chassis is level by verifying that all the screws on the front of

the rack are aligned with the screws at the back of the rack.

7. With two mounting screws—and cage nuts and washers if your rack requires

them—slide the second rear mounting blade into the blade receptacle on the chassis, and secure it to the rear of the rack by tightening the screws. You might need to loosen and adjust the first mounting blade to install the second blade.

Four Mounting Rails Procedure

To mount the device on four posts in a rack using a four -rail kit:

1. Attach the ESD grounding strap to your bare wrist and to a site ESD point.

2. Decide whether the management end of the device or the ports are to be placed at

the front of the rack.

3. Align the holes in the mounting rail with the button fasteners on the side of the device

and slide the holes over the fasteners to click into place. See Figure 31 on page 80 to see the proper alignment.

Figure 31: Attaching a Mounting Rail to the QFX3500

4. With three mounting screws—and cage nuts and washers if your rack requires

them—attach the mounting rail to the device. Tighten the screws.

5. Repeats steps 3 and 4 on the opposite side of the device. One end of the device now

has front facing mounting holes, the other end none.

6. With two mounting screws—and cage nuts and washers if your rack requires

7. Grasp both sides of the device, lift it, and position it in the rack so that the blade

receptacle at the rear of the chassis catches and slides onto the installation blade. See Figure 32 on page 81.

Juniper QFX3500 Hardware Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

List of Figures

List of Tables

About the Documentation

Documentation and Release Notes

Supported Platforms

Documentation Conventions

Documentation Feedback

Requesting Technical Support

Self-Help Online Tools and Resources

Opening a Case with JTAC

QFX3500 Device Overview

Software

Hardware

SFP+ Access Ports

QSFP+ Uplink Ports

Understanding Redundancy of QFX3500 Device Components and Functionality

Understanding QFX Series Virtual Chassis

QFX Virtual Chassis Overview

QFX5110 Switches in a Virtual Chassis

QFX5100 Switches in a Virtual Chassis

QFX3500 and QFX3600 Switches in a Virtual Chassis

EX4300 Switches in a QFX Series Virtual Chassis

Understanding QFX Series Virtual Chassis Components

Virtual Chassis Ports (VCPs)

Maximum Switch Support

Master Routing Engine Role

Backup Routing Engine Role

Linecard Role

Member Switch and Member ID

Mastership Priority

Chassis Physical Specifications for a QFX3500 Chassis

Field-Replaceable Units in a QFX3500 Device

Front Panel of a QFX3500 Device

Rear Panel of a QFX3500 Device

Access Port and Uplink Port LEDs on a QFX3500 Device

Chassis Status LEDs on a QFX3500 Device

Management Board for a QFX3500 Device

Management Port LEDs on a QFX3500 Device

Cooling System and Airflow for a QFX3500 Device

Fan Tray LED on a QFX3500 Device

AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device

DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device

AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device

DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device

Site Preparation Checklist for a QFX3500 Device

Environmental Requirements and Specifications for a QFX3500 Device

General Site Guidelines

Site Electrical Wiring Guidelines

Planning a Virtual Chassis Fabric Deployment

Rack Requirements for a QFX3500 Device

Cabinet Requirements for a QFX3500 Device

Clearance Requirements for Airflowand Hardware Maintenance for a QFX3500 Device

AC Power Specifications for a QFX3500 Device

AC Power Cord Specifications for a QFX Series Device

DC Power Specifications for a QFX3500 Device

Grounding Cable and Lug Specifications for a QFX3500 Device

Determining Interface Support for the QFX3500 Device

Cable Specifications for QSFP+ and QSFP28 Transceivers

Cable Specifications for Console and Management Connections for the QFX Series

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

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

Attenuation and Dispersion in Fiber-Optic Cable

Calculating the Fiber-Optic Cable Power Budget for a QFX Series Device

Calculating the Fiber-Optic Cable Power Margin for a QFX Series Device

USB Port Specifications for the QFX Series

Console Port Connector Pinout Information

RJ-45 Management Port Connector Pinout Information

Installing and Connecting a QFX3500 Device

Unpacking a QFX3500 Device

Mounting a QFX3500 Device in a Rack or Cabinet

Before You Begin Rack Installation

Two Mounting Rails Procedure

Four Mounting Rails Procedure