Juniper QFX3500 User Manual

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 Requirements for Airflow and Hardware Maintenance for a QFX3500
Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
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
Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Understanding QFX Series Fiber-Optic Cable Signal Loss, Attenuation, and
Dispersion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Signal Loss in Multimode and Single-Mode Fiber-Optic Cables . . . . . . . . . . 63
Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . 64
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
Copyright © 2017, Juniper Networks, Inc.iv
QFX3500 Device Hardware Documentation

Juniper QFX3500 Specifications

General

Brand	Juniper
Model	QFX3500
Category	Switch
Language	English