Connecting the QFX5120 to External Devices | 110
Connecting a Device to a Network for Out-of-Band Management | 110
Connecting a Device to a Management Console by Using an RJ-45 Connector | 111
Configuring Junos OS on the QFX5120 | 112
QFX5120 Default Configuration | 113
Connecting and Configuring a QFX5120 Switch | 113
Maintaining Components
Maintaining the QFX5120 Cooling System | 121
Removing a Fan Module from a QFX5120 Switch | 121
Installing a Fan Module in a QFX5120 Switch | 122
Maintaining the QFX5120 Power System | 124
Removing Power Supply from a QFX5120 Switch | 124
Connecting AC Power to a QFX5120 Switch | 126
Maintaining Transceivers | 129
Removing a Transceiver | 129
Removing a QSFP28 Transceiver | 132
Installing a Transceiver | 134
Installing a QSFP28 Transceiver | 136
Maintaining Fiber-Optic Cables | 138
Connecting a Fiber-Optic Cable | 138
Disconnecting a Fiber-Optic Cable | 139
Maintaining Fiber-Optic Cables | 140
Troubleshooting Hardware
Troubleshooting QFX5120 Components | 145
Understanding Alarms | 145
Interface Alarm Messages | 146
Creating an Emergency Boot Device | 147
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