Juniper QFX5120 Series Hardware Guide

Clearance Requirements for Airflow and Hardware Maintenance for QFX5120 Switches | 71
QFX5120 Network Cable and Transceiver Planning | 73
Pluggable Transceivers Supported on QFX5120 Switches | 73
SFP28 Direct Attach Copper Cables for QFX5120 Switches | 74
Cable Specifications | 75
Standards Supported by These Cables | 75
QSFP28 Direct Attach Copper Cables for QFX5120 Switches | 76
Cable Specifications | 76
Section | ?
Cable Specifications for QSFP+ and QSFP28 Transceivers on QFX5120 Switches | 77
Calculating the Fiber-Optic Cable Power Budget for QFX Series Switches | 78
Calculating the Fiber-Optic Cable Power Margin for QFX Series Switches | 79
QFX5120 Management Cable Specifications and Pinouts | 81
Console Port Connector Pinout Information | 81
RJ-45 Management Port Connector Pinout Information | 82
RJ-45 to DB-9 Serial Port Adapter Pinout Information | 83
QSFP+,QSFP28, SFP, SFP+, and SFP28 Port Connector Pinout Information | 83
Initial Installation and Configuration
3
Unpacking and Mounting the QFX5120 Switch | 91
Unpacking the Switch | 91
Parts Inventory (Packing List) for a QFX5120 Switch | 92
Registering Products—Mandatory for Validating SLAs | 93
Mounting a QFX5120 Switch on Four Posts of a Rack or Cabinet | 93
Connecting the QFX5120 to Power | 98
Connecting Earth Ground to a QFX5120 Switch | 98
Connecting AC Power to a QFX5120 Switch | 99
Connecting DC Power to a QFX5120 Switch | 101
Connecting the QFX5120 to the Network | 106
Installing a Transceiver | 106
Connecting a Fiber-Optic Cable | 109
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Juniper QFX5120 Series Specifications

General

Rack Units	1 U
Junos OS	Yes
Form Factor	Fixed
Power Supply	Dual, hot-swappable
Cooling	Front-to-back or back-to-front airflow
Fans	Hot-swappable
Operating Temperature	32°F to 104°F (0°C to 40°C)
Storage Temperature	-40°F to 158°F (-40°C to 70°C)
Humidity	5% to 90% non-condensing
AC Power Input	100 to 240 VAC
Management Ports	1x RJ-45 console, 1x USB, 1x RJ-45 management